Patent Description:
With the development of technologies, electronic devices with communication functions, such as mobile phones, are becoming increasingly popular and increasingly powerful. The electronic device generally includes an antenna assembly to implement a communication function of the electronic device. However, in the related art, communication performance of the antenna assembly in the electronic device is not good enough, and needs to be improved.

An electronic device with communication functions known from the prior art is disclosed in <CIT>.

According to a first aspect, an antenna assembly is provided in implementations of the present disclosure. The antenna assembly includes a first antenna and a second antenna.

The first antenna includes a first radiator, a first signal-source, a first matching circuit, and a first adjusting circuit. The first signal-source is electrically connected to the first radiator through the first matching circuit, and the first adjusting circuit is electrically connected to the first matching circuit or the first radiator, and configured to adjust a resonant frequency-point of the first antenna to make the first antenna support transmission/reception of an electromagnetic wave signal in a first frequency band.

The second antenna includes a second radiator, a second signal-source, a second matching circuit, and a second adjusting circuit. The second signal-source is electrically connected to the second radiator through the second matching circuit, and the second adjusting circuit is electrically connected to the second matching circuit or the second radiator, and configured to adjust a resonant frequency-point of the second antenna to make the second antenna support transmission/reception of an electromagnetic wave signal in a second frequency band and a third frequency band. The antenna assembly has a first resonant mode, a second resonant mode, a third resonant mode, and a fourth resonant mode; the first resonant mode is a <NUM>/<NUM> wavelength mode of the second antenna, the second resonant mode is a <NUM>/<NUM> wavelength mode from the first adjusting circuit to a gap between the first radiator and the second radiator, the third resonant mode is a <NUM>/<NUM> wavelength mode of the second antenna, and the fourth resonant mode is a <NUM>/<NUM> wavelength mode from the second signal-source to the gap between the second radiator and the first radiator; and transmission/reception of the electromagnetic wave signal in the second frequency band and the third frequency band is supported by the first resonant mode, the second resonant mode, the third resonant mode, and the fourth resonant mode.

According to a second aspect, an electronic device is provided in implementations of the present disclosure. The electronic device includes the antenna assembly according to the first aspect.

To describe technical solutions in implementations of the present disclosure more clearly, the following will give a brief introduction to accompanying drawings required for describing implementations or the related art. Apparently, the accompanying drawings described hereinafter are merely some implementations of the disclosure. Based on these drawings, those of ordinary skill in the art can also obtain other drawings without creative effort.

In a first aspect, an antenna assembly is provided in the present disclosure. The antenna assembly includes a first antenna and a second antenna.

The first antenna includes a first radiator, a first signal-source, a first matching circuit, and a first adjusting circuit, where the first signal-source is electrically connected to the first radiator through the first matching circuit, and the first adjusting circuit is electrically connected to the first matching circuit or the first radiator, and configured to adjust a resonant frequency-point of the first antenna to make the first antenna support transmission/reception of an electromagnetic wave signal in a first frequency band. The second antenna includes a second radiator, a second signal-source, a second matching circuit, and a second adjusting circuit, where the second signal-source is electrically connected to the second radiator through the second matching circuit, and the second adjusting circuit is electrically connected to the second matching circuit or the second radiator, and configured to adjust a resonant frequency-point of the second antenna to make the second antenna support transmission/reception of an electromagnetic wave signal in a second frequency band and a third frequency band. The antenna assembly has a first resonant mode, a second resonant mode, a third resonant mode, and a fourth resonant mode; the first resonant mode is a <NUM>/<NUM> wavelength mode of the second antenna, the second resonant mode is a <NUM>/<NUM> wavelength mode from the first adjusting circuit to a gap between the first radiator and the second radiator, the third resonant mode is a <NUM>/<NUM> wavelength mode of the second antenna, and the fourth resonant mode is a <NUM>/<NUM> wavelength mode from the second signal-source to the gap between the second radiator and the first radiator; and transmission/reception of the electromagnetic wave signal in the second frequency band and the third frequency band is supported by the first resonant mode, the second resonant mode, the third resonant mode, and the fourth resonant mode.

In an implementation, the first frequency band includes a lower band (LB), the second frequency band includes a middle high band (MHB), and the third frequency band includes an ultra-high band (UHB).

In an implementation, the first adjusting circuit is further configured to switch among frequency bands supported by the first antenna in the first frequency band.

In an implementation, the first adjusting circuit includes multiple adjusting sub-circuits and a switch unit, and the switch unit is configured to electrically connect, under control of a control signal, at least one adjusting sub-circuit in the multiple adjusting sub-circuits to the first matching circuit or the first radiator.

In an implementation, an adjusting sub-circuit includes any one or any combination of a capacitor, an inductor, or a resistor.

In an implementation, the first adjusting circuit includes a first inductor, a second inductor, a third inductor, and a capacitor, where the first inductor, the second inductor, and the third inductor are different in inductance, the switch unit includes a common terminal, a first switch sub-unit, a second switch sub-unit, a third switch sub-unit, and a fourth switch sub-unit, and the common terminal is electrically connected to the first matching circuit; the first switch sub-unit has one end electrically connected to the first inductor, and the other end electrically connected to the common terminal; the second switch sub-unit has one end electrically connected to the second inductor, and the other end electrically connected to the common terminal; the third switch sub-unit has one end electrically connected to the third inductor, and the other end electrically connected to the common terminal; and the fourth switch sub-unit has one end electrically connected to the capacitor, and the other end electrically connected to the common terminal.

In an implementation, the first matching circuit includes a first matching inductor, a first matching capacitor, a second matching inductor, a second matching capacitor, a third matching capacitor, and a third matching inductor, the first matching inductor has one end electrically connected to the first signal-source, and the other end electrically connected to the first radiator through the first matching capacitor and the second matching inductor in sequence, and a connection point between the first matching capacitor and the second matching inductor is electrically connected to the common terminal; the second matching capacitor has one end electrically connected to the connection point between the first matching inductor and the first matching capacitor, and the other end grounded; the third matching capacitor has one end electrically connected to the first radiator, and the other end grounded; and the third matching inductor has one end electrically connected to the first radiator, and the other end grounded.

In an implementation, the third matching capacitor includes a first matching sub-capacitor and a second matching sub-capacitor, the first matching sub-capacitor has one end electrically connected to the first radiator, and the other end grounded.

In an implementation, the second radiator is spaced apart from and coupled with the first radiator.

In an implementation, the first radiator has a first ground end, a first free end, a first feed point, and a first connection point, the first ground end is grounded, the first free end is spaced apart from and coupled with the second radiator, the first feed point and the first connection point are located between the first ground end and the first free end, the first signal-source is electrically connected to the first feed point of the first radiator through the first matching circuit, the first adjusting circuit is electrically connected to the first radiator, and the first adjusting circuit is electrically connected to the first connection point of the first radiator, The first connection point is located between the first ground end and the first feed point, or the first connection point is located between the first feed point and the first free end.

In an implementation, the second radiator has a second ground end, a second free end, a second feed point, and a second connection point, the second ground end is grounded, the second free end is spaced apart from and coupled with the first radiator, the second feed point and the second connection point are located between the second ground end and the second free end, the second signal-source is electrically connected to the second feed point of the second radiator through the second matching circuit, the second adjusting circuit is electrically connected to the second radiator, and the second adjusting circuit is electrically connected to the second connection point of the second radiator. The second connection point is located between the second ground end and the second feed point, or the second connection point is located between the second feed point and the second free end.

In an implementation, the first matching circuit includes one or more frequency-selective filter sub-circuits, the second matching circuit includes one or more frequency-selective filter sub-circuits, and the frequency-selective filter sub-circuits are further configured to isolate the first antenna from the second antenna.

In an implementation, the frequency-selective filter sub-circuit includes one or more of the following: a band-pass circuit formed by an inductor and a capacitor connected in series; a band-stop circuit formed by an inductor and a capacitor connected in parallel; an inductor, a first capacitor, and a second capacitor, where the inductor is connected in parallel with the first capacitor, and the second capacitor is electrically connected to a node where the inductor is electrically connected to the first capacitor; a capacitor, a first inductor, and a second inductor, where the capacitor is connected in parallel with the first inductor, and the second inductor is electrically connected to a node where the capacitor is electrically connected to the first inductor; an inductor, a first capacitor, and a second capacitor, where the inductor is connected in series with the first capacitor, the second capacitor has one end electrically connected to an end of the inductor that is not connected to the first capacitor, and the other end electrically connected to one end of the first capacitor that is not connected to the inductor; a capacitor, a first inductor, and a second inductor, where the capacitor is connected in series with the first inductor, the second inductor has one end electrically connected to one end of the capacitor that is not connected to the first inductor, and the other end electrically connected to one end of the first inductor that is not connected to the capacitor; a first capacitor, a second capacitor, a first inductor, and a second inductor, where the first capacitor is connected in parallel with the first inductor, the second capacitor is connected in parallel with the second inductor, and one end of an entirety formed by the second capacitor and the second inductor connected in parallel is electrically connected to one end of an entirety formed by the first capacitor and the first inductor connected in parallel; or a first capacitor, a second capacitor, a first inductor, and a second inductor, where the first capacitor and the first inductor are connected in series to form a first unit, the second capacitor and the second inductor are connected in series to form a second unit, and the first unit and the second unit are connected in parallel.

In an implementation, long term evolution (LTE) new radio (NR) double connect (ENDC) and carrier aggregation (CA) in a frequency-band range of <NUM> ~ <NUM> is implemented by the first antenna and the second antenna.

In an implementation, a dimension d of a gap between the first radiator and the second radiator satisfies: <NUM> ≤d≤<NUM>.

In a second aspect, an electronic device is provided in the present disclosure. The electronic device includes the antenna assembly in the first aspect.

In an implementation, the electronic device includes a middle frame, the middle frame includes a frame body and an edge frame, the edge frame is bendably connected with a periphery of the frame body; and one of the first radiator of the first antenna and the second radiator of the second antenna in the antenna assembly is formed on the edge frame.

In an implementation, the electronic device includes a top portion and a bottom portion, and the first radiator and the second radiator are both disposed on the top portion.

The following clearly and completely describes technical solutions in implementations of the present disclosure with reference to the accompanying drawings in the implementations of the present disclosure. Apparently, described implementations are merely some rather than all of implementations of the present disclosure. All other implementations obtained by those of ordinary skill in the art based on the implementations of the present disclosure without creative efforts shall belong to the scope of protection of the present disclosure.

Reference herein to "an implementation" or "implementations" means that a particular feature, structure, or characteristic described in conjunction with an implementation or implementations can be included in at least one implementation of the present disclosure. The appearances of this term in various places in the description are not necessarily all referring to the same implementation, nor are separate or alternative implementations mutually exclusive of other implementations. It is apparent and implicitly understood by those of ordinary skill in the art that implementations described herein can be combined with other implementations.

An antenna assembly <NUM> is provided in the present disclosure. The antenna assembly <NUM> can be applied to an electronic device <NUM>, and the electronic device <NUM> includes, but is not limited to, an electronic device <NUM> having a communication function, such as a mobile phone, an Internet device (MID), an electronic book, a play station portable (PSP), or a personal digital assistant (PDA).

Reference is made to <FIG>, which is a schematic diagram of an antenna assembly provided in an implementation of the present disclosure. The antenna assembly <NUM> includes a first antenna <NUM> and a second antenna <NUM>. The first antenna <NUM> includes a first radiator <NUM>, a first signal-source <NUM>, a first matching circuit <NUM>, and a first adjusting circuit <NUM>. The first signal-source <NUM> is electrically connected to the first radiator <NUM> through the first matching circuit <NUM>. The first adjusting circuit <NUM> is electrically connected to the first matching circuit <NUM> or the first radiator <NUM>, and is configured to adjust a resonant frequency-point of the first antenna <NUM>, so that transmission/reception of an electromagnetic wave signal in a first frequency band is supported by the first antenna <NUM>. The second antenna <NUM> includes a second radiator <NUM>, a second signal-source <NUM>, a second matching circuit <NUM>, and a second adjusting circuit <NUM>. The second signal-source <NUM> is electrically connected to the second radiator <NUM> through the second matching circuit <NUM>. The second adjusting circuit <NUM> is electrically connected to the second matching circuit <NUM> or the second radiator <NUM>. The second adjusting circuit <NUM> is configured to adjust a resonant frequency-point of the second antenna <NUM>, so that transmission/reception of an electromagnetic wave signal in a second frequency band and a third frequency band is supported by the second antenna <NUM>.

The first adjusting circuit <NUM> is electrically connected to the first matching circuit <NUM> or the first radiator <NUM>, the second adjusting circuit <NUM> is electrically connected to the second matching circuit <NUM> or the second radiator <NUM>, and these cases may be randomly combined as follows. Specifically, the first adjusting circuit <NUM> is electrically connected to the first matching circuit <NUM> and the second adjusting circuit <NUM> is electrically connected to the second matching circuit <NUM>; or, the first adjusting circuit <NUM> is electrically connected to the first matching circuit <NUM> and the second adjusting circuit <NUM> is electrically connected to the second radiator <NUM>; or, the first adjusting circuit <NUM> is electrically connected to the first radiator <NUM> and the second adjusting circuit <NUM> is electrically connected to the second matching circuit <NUM>; or, the first adjusting circuit <NUM> is electrically connected to the first radiator <NUM> and the second adjusting circuit <NUM> is electrically connected to the second radiator <NUM>. In an implementation as illustrated in <FIG>, for example, the first adjusting circuit <NUM> is electrically connected to the first matching circuit <NUM> and the second adjusting circuit <NUM> is electrically connected to the second matching circuit <NUM>.

Reference of other forms of the antenna assembly is made to <FIG> are schematic diagrams of antenna assemblies provided in other implementations of the present disclosure. In <FIG>, the first adjusting circuit <NUM> is electrically connected to the first matching circuit <NUM>, and the second adjusting circuit <NUM> is electrically connected to the second radiator <NUM>. In <FIG>, the first adjusting circuit <NUM> is electrically connected to the first radiator <NUM>, and the second adjusting circuit <NUM> is electrically connected to the second matching circuit <NUM>. In <FIG>, the first adjusting circuit <NUM> is electrically connected to the first radiator <NUM>, and the second adjusting circuit <NUM> is electrically connected to the second radiator <NUM>.

It should be noted that terms such as "first" and "second" in the specification, claims, and accompany drawings of the present disclosure are used for distinguishing different objects, rather than for describing a specific sequence. In addition, terms "include" and "have", and any variations thereof, are intended to cover a non-exclusive inclusion. The antenna assembly <NUM> including the first antenna <NUM> and the second antenna <NUM> does not exclude that the antenna assembly <NUM> includes other antennas in addition to the first antenna <NUM> and the second antenna <NUM>.

A signal source refers to a component that generates an excitation signal. When the first antenna <NUM> is configured to receive an electromagnetic wave signal, the first signal-source <NUM> generates a first excitation signal, and the first excitation signal is loaded onto the first radiator <NUM> (in this implementation, a first feed point <NUM>) through the first matching circuit <NUM>, so that the first radiator <NUM> radiates an electromagnetic wave signal. Correspondingly, when the second antenna <NUM> is configured to receive an electromagnetic wave signal, the second signal-source <NUM> generates a second excitation signal, and the second excitation signal is loaded onto the second radiator <NUM> (in this implementation, a second feed point <NUM>) through the second matching circuit <NUM>, so that the second radiator <NUM> receives and transmits an electromagnetic wave signal.

The first radiator <NUM> may be a flexible printed circuit (FPC) antenna radiator, a laser direct structuring (LDS) antenna radiator, or a printed direct structuring (PDS) antenna radiator, or a metal bracket. Correspondingly, the second radiator <NUM> may be an FPC antenna radiator, an LDS antenna radiator, a PDS antenna radiator, or a metal branch. It can be understood that types of the first radiator <NUM> and the second radiator <NUM> may be the same or different.

The antenna assembly <NUM> has a first resonant mode, the first resonant mode is a <NUM>/<NUM> wavelength mode of the second antenna <NUM>, and the first resonant mode corresponding to the <NUM>/<NUM> wavelength mode of the second antenna <NUM> will be described later with reference to a simulation diagram.

In the antenna assembly <NUM> provided in the present disclosure, the first resonant mode corresponding to the <NUM>/<NUM> wavelength mode of the second antenna <NUM> covers part of in the second frequency band and the third frequency band, so that transmission/reception of an electromagnetic wave signal in the first frequency band, the second frequency band, and the third frequency band is supported by the antenna assembly <NUM>. Thus, the antenna assembly <NUM> has a wide bandwidth and better communication performance.

In this implementation, the first frequency band includes a lower band (LB), the second frequency band includes a middle high band (MHB), and the third frequency band includes an ultra-high band (UHB).

The LB refers to a frequency band with a frequency lower than <NUM>, the MHB ranges from <NUM> to <NUM>, and the UHB ranges from <NUM> to <NUM>.

The antenna assembly <NUM> further has a second resonant mode, a third resonant mode, and a fourth resonant mode. In other words, in this implementation, the antenna assembly <NUM> is operable in the first resonant mode, the second resonant mode, the third resonant mode, and the fourth resonant mode together to support transmission/reception of the electromagnetic wave signal in the second frequency band and the third frequency band.

In an implementation, the second radiator <NUM> is spaced apart from and coupled with and the first radiator <NUM>. In the antenna assembly <NUM> provided in this implementation, the second radiator <NUM> is spaced apart from and coupled with the first radiator <NUM>, that is, the first radiator <NUM> and the second radiator <NUM> are shared-aperture. It can be understood that the term "shared-aperture" means that the first antenna <NUM> and the second antenna <NUM> each is an antenna with a parasitic branch. In other words, the first radiator <NUM> serves as a parasitic branch of the second antenna <NUM>, and the second radiator <NUM> serves as a parasitic branch of the first antenna <NUM>. Due to the coupling effect between the first radiator <NUM> and the second radiator <NUM>, when the first antenna <NUM> operates, not only the first radiator <NUM> is configured to receive and transmit an electromagnetic wave signal, but also the second radiator <NUM> is configured to receive and transmit an electromagnetic wave signal, so that the first antenna <NUM> can operate in a relatively wide frequency-band. Likewise, when the second antenna <NUM> operates, not only the second radiator <NUM> is configured to receive and transmit an electromagnetic wave signal, but also the first radiator <NUM> is configured to receive and transmit an electromagnetic wave signal, so that the second antenna <NUM> can operate in a relatively wide frequency-band. In addition, when the first antenna <NUM> operates, not only the first radiator <NUM> but also the second radiator <NUM> can be configured to receive and transmit an electromagnetic wave signal, when the second antenna <NUM> operates, not only the second radiator <NUM> but also the first radiator <NUM> can be configured to receive and transmit an electromagnetic wave signal, therefore, radiators in the antenna assembly <NUM> are multiplexed, and space is multiplexed, thereby facilitating the reduction of the size of the antenna assembly <NUM>. It can be seen from the above analysis that the antenna assembly <NUM> has a small size, and when the antenna assembly <NUM> is applied to the electronic device <NUM>, the antenna assembly <NUM> is easily stacked with other devices in the electronic device <NUM>.

Reference is made to <FIG> and <FIG> together, where <FIG> is an equivalent schematic diagram of the antenna assembly including the first adjusting circuit as illustrated in <FIG> implementing low-impedance to ground in the second frequency band and the third frequency band. The first adjusting circuit <NUM> implements low-impedance to ground of an electromagnetic wave signal in the second frequency band and in the third frequency band, and part of the first radiator <NUM> from a connection point where the first adjusting circuit <NUM> is connected to the first radiator <NUM> to a ground end (a first ground end <NUM>) of the first radiator <NUM> is equivalent to zero. An equivalent antenna assembly <NUM> is as illustrated in <FIG>, which will be described later in combination with the simulation diagram of S-parameters.

Reference is made to <FIG> again, in this implementation, the first radiator <NUM> has a first ground end <NUM>, a first free end <NUM>, a first feed point <NUM>, and a first connection point <NUM>. The first ground end <NUM> is grounded, the first free end <NUM> is spaced apart from and coupled with the second radiator <NUM>, the first feed point <NUM> is spaced apart from the first connection point <NUM>, and the first feed point <NUM> and the first connection point <NUM> are located between the first ground end <NUM> and the first free end <NUM>. In a schematic diagram of this implementation, for example, the first connection point <NUM> is located between the first feed point <NUM> and the first free end <NUM>. In other implementations, the first connection point <NUM> may also be located between the first feed point <NUM> and the first ground end <NUM>. One end of the first adjusting circuit <NUM> is grounded, and the other end of the first adjusting circuit <NUM> is electrically connected to the first connection point <NUM>. The second radiator <NUM> further includes a second ground end <NUM> and a second free end <NUM>, the second ground end <NUM> is grounded, the second free end <NUM> is spaced apart from the first free end <NUM>, and the second feed point <NUM> is located between the second ground end <NUM> and the second free end <NUM>.

The four resonant modes of the antenna module <NUM> will be described below with reference to a simulation diagram. The so-called resonant modes are also called resonant patterns. Reference is made to <FIG>, which is a simulation diagram of part of S-parameters of the antenna assembly as illustrated in <FIG>. In the schematic diagram of this implementation, the abscissa represents frequency in unit of GHz, the ordinate represents S-parameters in unit of dB. It can be seen from the simulation diagram that the antenna assembly <NUM> has a first resonant mode (marked as mode <NUM> in the figure), a second resonant mode (marked as mode <NUM> in the figure), a third resonant mode (marked as mode <NUM> in the figure), and a fourth resonant mode (marked as mode <NUM> in the figure). The first resonant mode is a <NUM>/<NUM> wavelength mode of the second antenna <NUM>, the second resonant mode is a <NUM>/<NUM> wavelength mode from the first adjustment circuit <NUM> to a gap between the first radiator <NUM> and the second radiator <NUM>, the third resonant mode is a <NUM>/<NUM> wavelength mode of the second antenna <NUM>, and the fourth resonant mode is a <NUM>/<NUM> wavelength mode from the second signal-source <NUM> to the gap between the second radiator <NUM> and the first radiator <NUM>. In can be understood that a wavelength of each resonant mode corresponds to a center frequency of said each resonant mode. In other words, <NUM>/<NUM> of a wavelength corresponding to a center frequency of the first resonant mode is the length of the second antenna <NUM>, <NUM>/<NUM> of a wavelength corresponding to a center frequency of the second resonant mode is a distance from the first adjusting circuit <NUM> to a gap between the first radiator <NUM> and the second radiator <NUM>, <NUM>/<NUM> of a wavelength corresponding to a center frequency of the third resonant mode is the length of the second antenna <NUM>, and <NUM>/<NUM> of a wavelength corresponding to a center frequency of the fourth resonant mode is a distance from the second signal-source <NUM> to the gap between the second radiator <NUM> and the first radiator <NUM>.

A sequence of appearance of each resonant mode changes according to a change of the length of the first radiator <NUM> and a change of the length of the second radiator <NUM>. The second resonant mode, the third resonant mode, and the fourth resonant mode herein are <NUM>/<NUM> wavelength modes, that is, basic modes. When the second resonant mode is a fundamental mode, the first resonant mode has a higher transmit/receive power; likewise, when the third resonant mode is a fundamental mode, the third resonant mode has a higher transmit/receive power; and likewise, when the fourth resonant mode is a fundamental mode, the fourth resonant mode has high transmit/receive power. It should be noted that, the second resonant mode, the third resonant mode, and the fourth resonant mode may be higher-order modes, and although the transmit/receive power of a higher-order mode is smaller than the transmit/receive power of the fundamental mode, as long as the first resonant mode, the second resonant mode, the third resonant mode, and the fourth resonant mode together implement transmission/reception of the electromagnetic wave signal in the second frequency band and the third frequency band.

It can be seen from the simulation diagram of this implementation that, in the antenna assembly <NUM>, the first resonant mode, the second resonant mode, the third resonant mode, and the fourth resonant mode may cover transmission/reception of an electromagnetic wave signal in MHB and UHB. That is, transmission/reception of an electromagnetic wave signal in a frequency-band range of <NUM> ~ <NUM> are achieved.

Reference is made to <FIG>, which is a schematic diagram of a first adjusting circuit provided in an implementation of the present disclosure. In the schematic diagram of this implementation, the first adjusting circuit <NUM> includes multiple adjusting sub-circuits and a switch unit. Under control of a control signal, the switch unit is configured to electrically connect at least one adjusting sub-circuit in the multiple adjusting sub-circuits to the first matching circuit <NUM> or the first radiator <NUM>. For convenience of description, the adjusting sub-circuits included in the first adjusting circuit <NUM> are named as first adjusting sub-circuits <NUM>, and the switch unit in the first adjusting circuit <NUM> is named as the first switch unit <NUM>. For example, the first switch unit <NUM> is electrically connected to the first connection point <NUM>, the first switch unit <NUM> is further electrically connected to the multiple first sub-adjustment circuits <NUM> to be grounded, and under the control of the control signal, the first switch unit <NUM> is configured to electrically connect at least one first sub-adjustment circuit <NUM> in the multiple first sub-adjustment circuits <NUM> to the first connection point <NUM>.

In the schematic diagram of this implementation, for example, the first adjusting sub-circuit <NUM> includes two first adjusting sub-circuits <NUM>, and accordingly, the first switch unit <NUM> is a single-pole double-throw (SPDT) switch. A movable terminal of the first switch unit <NUM> is electrically connected to the first connection point <NUM>, one fixed terminal of the first switch unit <NUM> is electrically connected to one of the first adjusting sub-circuits <NUM> to be grounded, and the other fixed terminal of the first switch unit <NUM> is electrically connected to the other one of the first adjusting sub-circuits <NUM> to be grounded. It can be understood that, in other implementations, the first adjusting circuit <NUM> includes N first adjusting sub-circuits <NUM>. Accordingly, the first switch unit <NUM> is a single-pole N-throw (SPNT) switch, or the first switch unit <NUM> is an N-pole N-throw (NPNT) switch, where N ≥ <NUM>, and N is a positive integer.

Reference is made to <FIG>, which is a schematic diagram of a first adjusting circuit provided another implementation of the present disclosure. In the implementation, the first adjusting circuit <NUM> includes M first adjusting sub-circuits <NUM> and M first switch units <NUM>, and each of the first switch units <NUM> is connected in series with one of the first adjusting sub-circuits <NUM>, where M ≥ <NUM>, and M is a positive integer. In the schematic diagram of this implementation, for illustrative purpose, M=<NUM>.

It can be understood that, forms of the first adjusting sub-circuit <NUM> and the first switch unit <NUM> in the first adjusting circuit <NUM> are not limited to those described above, as long as the first switch unit <NUM> is capable of electrically connect at least one first adjusting sub-circuit <NUM> in the multiple first adjusting sub-circuits <NUM> to the first connection point <NUM> under the control of the control signal.

The first adjusting sub-circuit <NUM> includes any one or any combination of a capacitor, an inductor, or a resistor. Therefore, the first adjusting sub-circuit <NUM> is also referred to as a lumped circuit.

Reference is made to <FIG>, which is a simulation diagram of a first adjusting circuit switching among frequency bands supported by the first antenna in the first frequency band. In the simulation diagram, the abscissa represents frequency in units of GHz, and the ordinate represents S-parameters in units of dB. In this simulation diagram, curve <NUM> is band <NUM> (B5), curve <NUM> is Band <NUM> (B8), and curve <NUM> is Band <NUM> (B28). The first adjusting circuit <NUM> is further configured to switch among frequency bands supported by the first antenna <NUM> in the first frequency band. The frequency bands supported in the first frequency band include, but are not limited to, B28, B5, and B8. The first adjusting circuit <NUM> is configured to enable the first antenna <NUM> to work in any one of B28, band <NUM> (B20), B5, or B8 and to be switchable among B28, B5 and B8. In other implementations, frequency bands supported in the first frequency band include, but are not limited to, B28, B20, B5, and B8.

Reference is made to <FIG>, which is an equivalent circuit diagram of the first antenna in the antenna assembly in <FIG>. In this implementation, the first adjusting circuit <NUM> includes four first adjusting sub-circuits. Specifically, the first adjusting circuit <NUM> includes a first inductor 114a, a second inductor 114b, a third inductor 114c, and a capacitor 114d. The first inductor 114a, the second inductor 114b, and the third inductor 114c have different inductance. The first switch unit <NUM> includes a common terminal P, a first switch sub-unit <NUM>, a second switch sub-unit <NUM>, a third switch sub-unit <NUM>, and a fourth switch sub-unit <NUM>. The common terminal P is electrically connected to the first matching circuit <NUM>, one end of the first switch sub-unit <NUM> is electrically connected to the first inductor 114a, and the other end of the first switch sub-unit <NUM> is electrically connected to the common terminal P. One end of the second switch sub-unit <NUM> is electrically connected to the second inductor 114b, and the other end of the second switch sub-unit <NUM> is electrically connected to the common terminal P. One end of the third switch sub-unit <NUM> is electrically connected to the third inductor 114c, and the other end of the third switch sub-unit <NUM> is electrically connected to the common terminal P. One end of the fourth switch sub-unit <NUM> is electrically connected to the capacitor 114d, and the other end of the fourth switch sub-unit <NUM> is electrically connected to the common terminal P.

Correspondingly, the first matching circuit <NUM> includes a first matching inductor L11, a first matching capacitor C11, a second matching inductor L12, a second matching capacitor C12, a third matching capacitor C13, and a third matching inductor L13. One end of the first matching inductor L11 is electrically connected to the first signal-source <NUM>, the other end of the first matching inductor L11 is electrically connected to the first radiator <NUM> through the first matching capacitor C11 and the second matching inductor L12 in sequence, and a connection point between the first matching capacitor C11 and the second matching inductor L12 is electrically connected to the common terminal P. One end of the second matching capacitor C12 is electrically connected to a connection point between the first matching inductor L11 and the first matching capacitor C11, and the other end of the second matching capacitor C12 is grounded. One end of the third matching capacitor C13 is electrically connected to the first radiator <NUM>, and the other end the third matching capacitor C13 is grounded. One end of the third matching inductor L13 is electrically connected to the first radiator <NUM>, and the other end of the third matching inductor L13 is grounded.

In this implementation, the third matching capacitor C13 includes a first matching sub-capacitor C01 and a second matching sub-capacitor C02, one end of the first matching sub-capacitor C01 is electrically connected to the first radiator <NUM>, and the other end of the first matching sub-capacitor C01 is electrically connected to second matching sub-capacitor C02 to be grounded.

It should be noted that a matching capacitor is also a capacitor, and a matching inductor is also an inductor. In other words, the third matching capacitor C13 includes two capacitors (the first matching sub-capacitor C01 and the second matching sub-capacitor C02) connected in series. The third matching capacitor C13 includes two capacitors connected in series, which can facilitate selecting an appropriate capacitor to achieve a capacitance.

The first matching circuit <NUM> includes one or more frequency-selective filter sub-circuits 113a, and the second matching circuit <NUM> includes one or more frequency-selective filter sub-circuits 113a. The frequency-selective filter sub-circuits 113a are further configured to isolate the first antenna <NUM> from the second antenna <NUM>. Reference is made to <FIG> together, where <FIG> are schematic diagrams of frequency-selective filter sub-circuits provided in various implementations, respectively. The frequency-selective filter sub-circuit 113a includes one or more of the following circuits.

Reference is made to <FIG>, and in <FIG>, the frequency-selective filter sub-circuit 113a includes a band-pass circuit formed by an inductor L0 and a capacitor C0 connected in series.

Reference is made to <FIG>, and in <FIG>, the frequency-selective filter sub-circuit 113a includes a band-stop circuit formed by an inductor L0 and a capacitor C0 connected in parallel.

Reference is made to <FIG>, and in <FIG>, the frequency-selective filter sub-circuit 113a includes an inductor L0, a first capacitor C1, and a second capacitor C2. The inductor L0 is connected in parallel with the first capacitor C1, and the second capacitor C2 is electrically connected to a node where the inductor L0 is electrically connected to the first capacitor C1.

Reference is made to <FIG>, and in <FIG>, the frequency-selective filter sub-circuit 113a includes a capacitor C0, a first inductor L1, and a second inductor L2. The capacitor C0 is connected in parallel with the first inductor L1, and the second inductor L2 is electrically connected to a node where the capacitor C0 is electrically connected to the first inductor L1.

Reference is made to <FIG>, and in <FIG>, the frequency-selective filter sub-circuit 113a includes an inductor L0, a first capacitor C1, and a second capacitor C2. The inductor L0 is connected in series with the first capacitor C1, one end of the second capacitor C2 is electrically connected to an end of the inductor L0 that is not connected to the first capacitor C1, and the other end of the second capacitor C2 is electrically connected to one end of the first capacitor C1 that is not connected to the inductor L0.

Reference is made to <FIG>, and in <FIG>, the frequency-selective filter sub-circuit 113a includes a capacitor C0, a first inductor L1, and a second inductor L2. The capacitor C0 is connected in series with the first inductor L1, one end of the second inductor L2 is electrically connected to one end of the capacitor C0 that is not connected to the first inductor L1, and the other end of the second inductor L2 is electrically connected to one end of the first inductor L1 that is not connected to the capacitor C0.

Reference is made to <FIG>, and in <FIG>, the frequency-selective filter circuit 113a includes a first capacitor C1, a second capacitor C2, a first inductor L1, and a second inductor L2. The first capacitor C1 is connected in parallel with the first inductor L1, the second capacitor C2 is connected in parallel with the second inductor L2, and one end of an entirety formed by the second capacitor C2 and the second inductor L2 connected in parallel is electrically connected to one end of an entirety formed by the first capacitor C1 and the first inductor L1 connected in parallel.

Reference is made to <FIG>, and in <FIG>, the frequency-selective filter sub-circuit 113a includes a first capacitor C1, a second capacitor C2, a first inductor L1, and a second inductor L2. The first capacitor C1 is connected in series with the first inductor L1 to form a first unit 113b, the second capacitor C2 is connected in series with the second inductor L2 to form a second unit 113c, and the first unit 113b is connected in parallel with the second unit 113c.

Reference is made to <FIG>, which is a schematic diagram of a second adjusting circuit provided in an implementation of the present disclosure. In this implementation, the second adjusting circuit <NUM> includes multiple adjusting sub-circuits and multiple switch units. For convenience of description, each adjusting sub-circuit included in the second adjusting circuit <NUM> is named as a second adjusting sub-circuit <NUM>, and each switch unit included in the second adjusting circuit <NUM> is named as a second switch unit <NUM>. The second switch units <NUM> are configured to electrically connect at least one of the multiple second adjusting sub-circuits <NUM> in the second adjusting circuit <NUM> to the second matching circuit <NUM> or the second radiator <NUM>, under control of a control signal. In the schematic diagram of this implementation, for example, the second matching circuit <NUM> is connected. In the schematic diagram of this implementation, for example, the second adjusting circuit <NUM> includes three switch units and three second adjusting sub-circuits <NUM>. Each switch unit <NUM> is electrically connected to a second adjusting sub-circuit <NUM>.

Reference is made to <FIG>, which is a schematic diagram of a second adjusting circuit provided in an implementation of the present disclosure. In this implementation, the second adjusting circuit <NUM> includes a single-pole three-throw (SP3T) switch and three second adjusting sub-circuits <NUM>. A movable terminal of the SP3T switch is electrically connected to the second matching circuit <NUM>, and three fixed terminals of the SP3T switch are electrically connected to the three second adjusting sub-circuits <NUM>, respectively. It can be understood that, in other implementations, the second adjusting circuit <NUM> includes K second adjusting sub-circuits <NUM>. Accordingly, the second switch unit <NUM> is a single-pole K-throw (SPKT) switch, or the second switch unit <NUM> is a K-pole K-throw (KPKT) switch, where K is a positive integer greater than or equal to <NUM>.

The second adjusting sub-circuit <NUM> includes at least one of a capacitor, an inductor, or a resistor, or any combination thereof. Therefore, the second adjusting sub-circuit <NUM> is also referred to as a lumped circuit. It can be understood that the first adjusting sub-circuit <NUM> of the first adjusting circuit <NUM> and the second adjusting sub-circuit <NUM> of the second adjusting circuit <NUM> may be the same or different.

In this implementation, the first adjusting circuit <NUM> and the second adjusting circuit <NUM> modulate together, so that the antenna assembly <NUM> can implement transmission/reception of an electromagnetic wave signal in the first frequency band, the second frequency band, and the third frequency band, thereby implementing carrier aggregation (CA) and ENDC in LB+ MHB+UHB. Description is made below with reference to simulation diagrams. Reference is made to <FIG>, where <FIG> is a simulation diagram of S-parameters of the antenna assembly as illustrated in <FIG>, and <FIG> is a simulation diagram of isolation of the antenna assembly as illustrated in <FIG>. In <FIG>, the abscissa represents frequency in units of GHz, the ordinate represents S-parameters in units of dB. In this simulation diagram, curve <NUM> represents S1,<NUM> parameter, curve <NUM> represents S2,<NUM> parameter, and curve <NUM> represents S2,<NUM> parameter. It can be seen from the simulation diagram that a resonant frequency-band corresponding to curve <NUM> is LB, and a resonant frequency-band corresponding to curve <NUM> is MHB and UHB. It can be seen from curve <NUM> that LB has a higher isolation from MHB and UHB, respectively. In the antenna assembly <NUM> of the present disclosure, the first antenna <NUM> and the second antenna <NUM> are together configured to realize long term evolution (LTE) new radio (NR) double connect (ENDC) and CA in a LB+MHB+UHB (a frequency-band range of <NUM> ~<NUM>).

In other words, the first antenna <NUM> and the second antenna <NUM> in the antenna assembly <NUM> are configured to implement ENDC in a range of OMHz ~ <NUM>. It can be seen that the antenna assembly <NUM> of the present disclosure can realize ENDC and can support both a fourth generation mobile communications technology (<NUM>) wireless access network and fifth generation mobile communications technology (<NUM>)-NR. Therefore, the antenna assembly <NUM> provided in implementations of the present disclosure can improve a transmission bandwidth of <NUM> and <NUM>, improve uplink and downlink rates, and have a better communication effect.

In the antenna assembly <NUM> of the present disclosure, the first antenna <NUM> and the second antenna <NUM> are cooperatively configured to implement ENDC and CA in LB+MHB+UHB (a frequency-band range of <NUM>~<NUM>). Therefore, the first antenna <NUM> and the second antenna <NUM> may be cooperatively configured to implement ENDC and CA in a frequency-band range of <NUM>~<NUM>. In other words, the first antenna <NUM> and the second antenna <NUM> together implement ENDC and CA in MHB+UHB.

The first radiator <NUM> has a first ground end <NUM>, a first free end <NUM>, a first feed point <NUM>, and a first connection point <NUM>. The first ground end <NUM> is grounded, and the first free end <NUM> is spaced apart from and coupled with the second radiator <NUM>. The first feed point <NUM> and the first connection point <NUM> are located between the first ground end <NUM> and the first free end <NUM>. The first signal-source <NUM> is electrically connected to the first feed point <NUM> of the first radiator <NUM> through the first matching circuit <NUM>. When the first adjusting circuit <NUM> is electrically connected to the first radiator <NUM>, the first adjusting circuit <NUM> is electrically connected to the first connection point <NUM> of the first radiator <NUM>, where the first connection point <NUM> is located between the first ground end <NUM> and the first feed point <NUM>, or the first connection point <NUM> is located between the first feed point <NUM> and the first free end <NUM>.

Correspondingly, the second radiator <NUM> has a second ground end <NUM>, a second free end <NUM>, a second feed point <NUM>, and a second connection point <NUM>. The second ground end <NUM> is grounded, and the second free end <NUM> is spaced apart from and coupled with the first radiator <NUM>. Specifically, the first free end <NUM> of the first radiator <NUM> is spaced apart from and coupled with the second free end <NUM> of the second radiator <NUM>. The second feed point <NUM> and the second connection point <NUM> are located between the second ground end <NUM> and the second free end <NUM>. The second signal-source <NUM> is electrically connected to the second feed point <NUM> of the second radiator <NUM> through the second matching circuit <NUM>. When the second adjusting circuit <NUM> is electrically connected to the second radiator <NUM>, the second adjusting circuit <NUM> is electrically connected to the second connection point <NUM> of the second radiator <NUM>, where the second connection point <NUM> is located between the second ground end <NUM> and the second feed point <NUM>, or the second connection point <NUM> is located between the second feed point <NUM> and the second free end <NUM>.

The first connection point <NUM> is located between the first ground end <NUM> and the first feed point <NUM>, or the first connection point <NUM> is located between the first feed point <NUM> and the first free end <NUM>. The second adjusting circuit <NUM> is electrically connected to the second connection point <NUM> of the second radiator <NUM>, where the second connection point <NUM> is located between the second ground end <NUM> and the second feed point <NUM>, or the second connection point <NUM> is located between the second feed point <NUM> and the second free end <NUM>. Therefore, positions of the first connection point <NUM> and the second connection point <NUM> in the antenna assembly <NUM> may include any combination of the following. The first connection point <NUM> is located between the first ground end <NUM> and the first feed point <NUM>, and the second connection point <NUM> is located between the second ground end <NUM> and the second feed point <NUM> (see <FIG>); or the first connection point <NUM> is located between the first ground end <NUM> and the first feed point <NUM>, and the second connection point <NUM> is located between the second feed point <NUM> and the second free end <NUM> (see <FIG>); or the first connection point <NUM> is located between the first feed point <NUM> and the first free end <NUM>, and the second connection point <NUM> is located between the second ground end <NUM> and the second feed point <NUM> (see <FIG>); or, the first connection point <NUM> is located between the first feed point <NUM> and the first free end <NUM>, and the second connection point <NUM> is located between the second feed point <NUM> and the second free end <NUM> (see <FIG>).

When the first connection point <NUM> is located between the first feed point <NUM> and the first free end <NUM>, an influence of an electromagnetic wave signal (an electromagnetic wave signal in the first frequency band and an electromagnetic wave signal supported by the first resonant mode) generated by the first radiator <NUM> on electromagnetic wave signals in other frequency bands supported by the antenna assembly <NUM> for receiving and transmitting can be reduced. It can be understood that, the first connection point <NUM> may also be located between the first feed point <NUM> and the first ground end <NUM>, as long as the first adjusting circuit <NUM> can be electrically connected to the first radiator <NUM>.

When the second connection point <NUM> is located between the second feed point <NUM> and the second free end <NUM>, an influence of an electromagnetic wave signal generated by the second radiator <NUM> on electromagnetic wave signals in other frequency bands supported by the antenna assembly <NUM> for receiving and transmitting can be reduced. It can be understood that, the second connection point <NUM> may also be located between the second feed point <NUM> and the second ground end <NUM>, as long as the second adjusting circuit <NUM> can be electrically connected to the second radiator <NUM>.

Reference is made to <FIG> is a schematic diagram illustrating a dimension of a gap between the first radiator and the second radiator in the antenna assembly provided in an implementation of the present disclosure. The dimension d of the gap between the first radiator <NUM> and the second radiator <NUM> satisfies: <NUM>≤d≤<NUM>.

It can be understood that, for the antenna assembly <NUM>, the gap between the first antenna <NUM> radiator and the second antenna <NUM> radiator in the antenna assembly <NUM> always meet: <NUM> ≤ d ≤ <NUM>. Thus, a better coupling effect between the first radiator <NUM> and the second radiator <NUM> may be ensured. In this implementation, for illustrative purpose, the sizes of the first radiator <NUM> and the second radiator <NUM> in the antenna assembly <NUM> are illustrated in the antenna assembly <NUM> as illustrated in <FIG>, however, it should not be understood as a limitation to the present disclosure, and the gap between the first radiator <NUM> and the second radiator <NUM> is also applicable to the antenna assembly <NUM> provided in other implementations.

Reference is made to <FIG>, which is a three-dimensional structural diagram of an electronic device provided in an implementation of the present disclosure. The electronic device <NUM> includes the antenna assembly <NUM> according to any foregoing implementation.

Reference is made to <FIG>, which is a cross-sectional view taken along line I-I in <FIG> provided in an implementation. In this implementation, the electronic device <NUM> further includes a middle frame <NUM>, a screen <NUM>, a circuit board <NUM>, and a battery cover <NUM>. The middle frame <NUM> is made of metal, such as aluminum magnesium alloy. The middle frame <NUM> generally serves as the ground of the electronic device <NUM>. When electronic components in the electronic device <NUM> need to be grounded, the electronic components may be connected to the middle frame <NUM> to be grounded. In addition, a ground system in the electronic device <NUM> not only includes the middle frame <NUM>, but also includes a ground on the circuit board <NUM> and a ground in the screen <NUM>. The screen <NUM> may be a display screen with a display function, and may also be a screen <NUM> integrated with a display function and a touch control function. The screen <NUM> is configured to display information such as a text, an image, and a video. The screen <NUM> is carried on the middle frame <NUM> and disposed on one side of the middle frame <NUM>. The circuit board <NUM> is also generally carried on the middle frame <NUM>, and the circuit board <NUM> and the screen <NUM> are carried on two opposite sides of the middle frame <NUM>. At least one or more of the first signal-source <NUM>, the second signal-source <NUM>, the first matching circuit <NUM>, the second matching circuit <NUM>, the first adjusting circuit <NUM>, and the second adjusting circuit <NUM> in the antenna assembly <NUM> described above may be disposed on the circuit board <NUM>. The battery cover <NUM> is disposed on one side of the circuit board <NUM> away from the middle frame <NUM>. The battery cover <NUM>, the middle frame <NUM>, the circuit board <NUM>, and the screen <NUM> cooperate with each other to form a complete electronic device <NUM>. It should be understood that, the structural description of the electronic device <NUM> is only a description of one form of the structure of the electronic device <NUM>, should not be understood as a limitation to the electronic device <NUM>, and should not be understood as a limitation to the antenna assembly <NUM>.

When the first radiator <NUM> is electrically connected to the ground of the middle frame <NUM>, the first radiator <NUM> may be connected to the ground of the middle frame <NUM> through a connecting bar, or the first radiator <NUM> may also be electrically connected to the ground of the middle frame <NUM> through a conductive elastic sheet. Likewise, when the second radiator <NUM> is electrically connected to the ground of the middle frame <NUM>, the second radiator <NUM> may also be connected to the ground of the middle frame <NUM> through a connecting rib, or the second radiator <NUM> may also be electrically connected to the ground of the middle frame <NUM> through a conductive elastic sheet.

The middle frame <NUM> includes a frame body <NUM> and an edge frame <NUM>. The edge frame <NUM> is bendably connected to a periphery of the frame body <NUM>. Any of the first radiator <NUM>, the second radiator <NUM>, the third radiator <NUM>, or the fourth radiator <NUM> in the foregoing implementations may be formed on the edge frame <NUM>.

It should be understood that, in other implementations, the first radiator <NUM> and the second radiator <NUM> may also be formed on the edge frame <NUM>, or the first radiator <NUM> and the second radiator <NUM> each may be a FPC antenna radiator, a LDS antenna radiator, a PDS antenna radiator, or a metal branch.

Reference is made to <FIG>, which is a schematic diagram illustrating positions in an electronic device provided in an implementation. In this implementation, the electronic device <NUM> includes a top portion 1a and a bottom portion 1b, and the first radiator <NUM> and the second radiator <NUM> are both disposed on the top portion 1a.

The top portion 1a refers to an upper part of the electronic device <NUM> when the electronic device <NUM> is in use, and the bottom portion 1b is opposite to the top portion 1a and refers to a lower part of the electronic device <NUM>.

The electronic device <NUM> in this implementation includes a first side <NUM>, a second side <NUM>, a third side <NUM>, and a fourth side <NUM> that are sequentially connected to one another end to end. The first side <NUM> and the third side <NUM> are short sides of the electronic device <NUM>, and the second side <NUM> and the fourth side <NUM> are long sides of the electronic device <NUM>. The first side <NUM> and the third side <NUM> are opposite to each other and spaced apart from each other, the second side <NUM> and the fourth side <NUM> are opposite to each other and spaced apart from each other. The second side <NUM> is connected to the first side <NUM> and the third side <NUM> in a bending manner, and the fourth side <NUM> is connected to the first side <NUM> and the third side <NUM> in a bending manner. A connection between the first side <NUM> and the second side <NUM>, a connection between the second side <NUM> and the third side <NUM>, a connection between the third side <NUM> and the fourth side <NUM>, and a connection between the fourth side <NUM> and the first side <NUM> all form corners of the electronic device <NUM>. The first side <NUM> is a top side, the second side <NUM> is a right side, the third side <NUM> is a lower side, and the fourth side <NUM> is a left side. The first side <NUM> and the second side <NUM> define an upper right corner, and the first side <NUM> and the fourth side <NUM> define an upper left corner.

The top portion 1a includes three cases: the first radiator <NUM> and the second radiator <NUM> are disposed at the upper left corner of the electronic device <NUM>; or, the first radiator <NUM> and the second radiator <NUM> are disposed at the top side of the electronic device <NUM>; or the first radiator <NUM> and the second radiator <NUM> are disposed at the upper right corner of the electronic device <NUM>.

The first radiator <NUM> and the second radiator <NUM> being disposed at the upper left corner of the electronic device <NUM> includes following cases: part of the first radiator <NUM> is disposed at the left side, the other part of the first radiator <NUM> is disposed at the top side, and the second radiator <NUM> is disposed at the top side; or, part of the second radiator <NUM> is disposed at the top side, the other part of the second radiator <NUM> is disposed at the left side, and the first radiator <NUM> is disposed at the left side.

The first radiator <NUM> and the second radiator <NUM> being disposed at the upper right corner of the electronic device <NUM> includes following cases: part of the first radiator <NUM> is disposed at the top side, the other part of the first radiator <NUM> is disposed at the right side, and the second radiator <NUM> is disposed at the right side; or, part of the second radiator <NUM> is disposed at the right side, the other part of the second radiator <NUM> is disposed at the top side, and part of the first radiator <NUM> is disposed at the top side.

When the electronic device <NUM> is placed upright, the top portion 1a of the electronic device <NUM> is usually away from the ground, and the bottom portion 1b of the electronic device <NUM> is usually close to the ground. When the first radiator <NUM> and the second radiator <NUM> are disposed on the top portion 1a, upper hemisphere radiation efficiency of the first antenna <NUM> and the second antenna <NUM> is better, so that the first antenna <NUM> and the second antenna <NUM> have better communication efficiency. Certainly, in other implementations, the first radiator <NUM> and the second radiator <NUM> may also be disposed on the bottom portion 1b of the electronic device <NUM>, When the first radiator <NUM> and the second radiator <NUM> are disposed on the bottom portion 1b of the electronic device <NUM>, the first antenna <NUM> and the second antenna <NUM> do not have good upper hemisphere radiation efficiency, but the first antenna <NUM> and the second antenna <NUM> may also have good communication effect as long as the upper hemisphere radiation efficiency is greater than or equal to the preset efficiency.

Claim 1:
An antenna assembly (<NUM>) comprising:
a first antenna (<NUM>) comprising a first radiator (<NUM>), a first signal-source (<NUM>), a first matching circuit (<NUM>), and a first adjusting circuit (<NUM>), wherein the first signal-source (<NUM>) is electrically connected to the first radiator (<NUM>) through the first matching circuit (<NUM>), and the first adjusting circuit (<NUM>) is electrically connected to the first matching circuit (<NUM>) or the first radiator (<NUM>), and configured to adjust a resonant frequency-point of the first antenna (<NUM>) to make the first antenna (<NUM>) support transmission/reception of an electromagnetic wave signal in a first frequency band; and
a second antenna (<NUM>) comprising a second radiator (<NUM>), a second signal-source (<NUM>), a second matching circuit (<NUM>), and a second adjusting circuit (<NUM>), wherein the second signal-source (<NUM>) is electrically connected to the second radiator (<NUM>) through the second matching circuit (<NUM>), and the second adjusting circuit (<NUM>) is electrically connected to the second matching circuit (<NUM>) or the second radiator (<NUM>), and configured to adjust a resonant frequency-point of the second antenna (<NUM>) to make the second antenna (<NUM>) support transmission/reception of an electromagnetic wave signal in a second frequency band and a third frequency band, wherein,
the antenna assembly (<NUM>) has a first resonant mode, a second resonant mode, a third resonant mode, and a fourth resonant mode; the first resonant mode is a <NUM>/<NUM> wavelength mode of the second antenna (<NUM>), the second resonant mode is a <NUM>/<NUM> wavelength mode from the first adjusting circuit (<NUM>) to a gap between the first radiator (<NUM>) and the second radiator (<NUM>), the third resonant mode is a <NUM>/<NUM> wavelength mode of the second antenna (<NUM>), and the fourth resonant mode is a <NUM>/<NUM> wavelength mode from the second signal-source (<NUM>) to the gap between the second radiator (<NUM>) and the first radiator (<NUM>); and transmission/reception of the electromagnetic wave signal in the second frequency band and the third frequency band is supported by the first resonant mode, the second resonant mode, the third resonant mode, and the fourth resonant mode.