Patent ID: 12249777

DETAILED DESCRIPTION OF THE EMBODIMENTS

Embodiments of the disclosure are described below with reference to relevant drawings. The same reference numbers in the drawings represent the same or similar components or circuits. It should be understood that although terms such as “first”, “second” in this specification may be used for describing various elements, components, areas, or functions, the elements, components, areas, or functions are not limited by such terms. The terms are only used to distinguish one element, component, area, or function from another element, component, area, or function.

FIG.1is a schematic structural diagram of an ultra-wideband antenna device according to a first embodiment of the disclosure. Referring toFIG.1, in the first embodiment, an ultra-wideband antenna device10basically includes a radiation metal body12, a first slotted hole14, a second slotted hole16, a third slotted hole18, a fourth slotted hole20, a ground point22, and a feeding source24.

In the ultra-wideband antenna device10, the radiation metal body12includes a first side edge121and a second side edge122opposite to each other, and a third side edge123and a fourth side edge124opposite to each other. The third side edge123is adjacent to a same end of the first side edge121and the second side edge122, and the fourth side edge124is adjacent to the other end of the first side edge121and the second side edge122. The first slotted hole14is located on the radiation metal body12and extends vertically inward from the first side edge121, so that the first slotted hole14formed on the radiation metal body12is closed at one end and open at the other end. The second slotted hole16is located on the radiation metal body12and extends vertically inward from the second side edge122, so that the second slotted hole16formed on the radiation metal body12is closed at one end and open at the other end. The third slotted hole18is located on the radiation metal body12and extends vertically inward from the third side edge123, so that the third slotted hole18formed on the radiation metal body12is closed at one end and open at the other end. The fourth slotted hole20is located on the radiation metal body12and extends vertically inward from the fourth side124, so that the fourth slotted hole20formed on the radiation metal body12is closed at one end and open at the other end. The ground point22is located at a middle position of the radiation metal body12. In an embodiment, the middle position of the ground point22is a geometric center of the radiation metal body12to connect a position with a strongest current to ground. The feeding source24is located on the radiation metal body12and away from the middle position, so that the feeding source24is arranged at an edge corner of the radiation metal body12to receive or transmit a radio frequency signal by using the feeding source24. In this embodiment, the feeding source24is at a lower right corner, but the disclosure is not limited thereto.

In an embodiment, the first slotted hole14and the second slotted hole16have a same first length, and the first slotted hole14and the second slotted hole16are located on a same horizontal line. The third slotted hole18and the fourth slotted hole20have a same second length, and the third slotted hole18and the fourth slotted hole20are located on a same vertical line. The first length is different from the second length. The first slotted hole14and the second slotted hole16having the first length are used to implement resonance of a first frequency band, so that the ultra-wideband antenna device10supports reception and transmission of a radio frequency signal in the first frequency band. The third slotted hole18and the fourth slotted hole20having the second length are used to implement resonance of a second frequency band, so that the ultra-wideband antenna device10supports reception and transmission of a radio frequency signal in the second frequency band. In this embodiment, the first length is greater than the second length, so the first slotted hole14and the second slotted hole16having the first length are used to implement the resonance of the lower first frequency band, while the third slotted hole18and the fourth slotted hole20having the second length are used to implement the resonance of the higher second frequency band.

Referring toFIG.1andFIG.2together, the ultra-wideband antenna device10further includes a dielectric substrate26, a ground plane28, and a via30. The dielectric substrate26includes a first surface261and a second surface262opposite to each other. The radiation metal body12is arranged on the first surface261of the dielectric substrate26. The ground plane28is located on the second surface262of the dielectric substrate26. The via30penetrates the dielectric substrate26to electrically connect the ground point22and the ground plane28, so that the ground point22of the radiation metal body12is electrically connected and grounded to the ground plane28through the via30.

FIG.3is a schematic structural diagram of an ultra-wideband antenna device according to a second embodiment of the disclosure. Referring toFIG.2andFIG.3together, in the second embodiment, the ultra-wideband antenna device10further includes a radiation metal body12, a first slotted hole14, a second slotted hole16, a third slotted hole18, a fourth slotted hole20, a ground point22, a feeding source24, a dielectric substrate26, a ground plane28, and a via30. The feeding source24is arranged on the radiation metal body12and away from a middle position, so that the feeding source24is arranged at a position of the radiation metal body12surrounded by the second slotted hole16and the third slotted hole18, so as to receive or transmit a radio frequency signal through the feeding source24. Based on this, the position of the feeding source24is changed to improve antenna performance in the disclosure. In this embodiment, the feeding source24is at a position of the radiation metal body12surrounded by the second slotted hole16and the third slotted hole18, but the disclosure is not limited thereto. In the second embodiment, other components are the same as in the first embodiment except the position of the feeding source24. Therefore, reference is made to the foregoing description, and the disclosure is not described herein again.

In an embodiment, the ultra-wideband antenna device10further includes a plurality of ultra-wideband antennas32,32′,32″. Referring toFIG.4andFIG.5together, an ultra-wideband antenna device10includes a dielectric substrate26, three ultra-wideband antennas32,32′,32″, and a ground plane28. The dielectric substrate26includes a first surface261and a second surface262. The three ultra-wideband antennas32,32′,32″ are arranged on the first surface261of the dielectric substrate26and arranged in an L-shape. Each ultra-wideband antenna32,32′,32″ has a same structural design. In an embodiment, the ultra-wideband antenna32includes a radiation metal body12, a first slotted hole14, a second slotted hole16, a third slotted hole18, a fourth slotted hole20, a ground point22, a feeding source24, and a via30. The radiation metal body12includes a first side edge121and a second side edge122opposite to each other and a third side edge123and a fourth side edge124opposite to each other. The first slotted hole14is located on the radiation metal body12and extends inward from the first side edge121, the second slotted hole16is located on the radiation metal body12and extends inward from the second side edge122, the third slotted hole18is located on the radiation metal body12and extends inward from the third side edge123, and the fourth slotted hole20is located on the radiation metal body12and extends inward from the fourth side edge124. The ground point22is located in a middle position of the radiation metal body12, and the feeding source24is located on the radiation metal body12and away from the middle position. The via30penetrates the dielectric substrate26and is connected to the ground point22. The ground plane28is located on the second surface262of the dielectric substrate26, and the ground plane28is connected to the ground point22through the via30, so that the ground point22is electrically connected and grounded to the ground plane28through the via30. The feeding source24,24′,24″ of each ultra-wideband antenna32,32′,32″ is located at a different position. The feeding source24,24′,24″ of each ultra-wideband antenna32,32′,32″ is located at an edge corner close of the radiation metal bodies12,12′,12″ close the other ultra-wideband antennas32,32′,32″. More specifically, the feeding source24of the ultra-wideband antenna32is located at an edge corner of the radiation metal bodies12close to the other ultra-wideband antennas32′,32″, that is, the feeding source24of the ultra-wideband antenna32is arranged at an edge corner of the lower right corner of the radiation metal body12. The feeding source24′ of the ultra-wideband antenna32′ is located at an edge corner of the radiation metal body12′ close to the other ultra-wideband antennas32,32′, that is, the feeding source24′ of the ultra-wideband antenna32′ is arranged at an edge corner of an upper right corner of the radiation metal body12′. The feeding source24″ of the ultra-wideband antenna32″ is located at an edge corner position of the radiation metal body12″ close the other ultra-wideband antennas32,32′, that is, the feeding source24″ of the ultra-wideband antenna32″ is located at an edge corner of an upper left corner of the radiation metal body12″.

In an embodiment, as shown inFIG.1toFIG.5, the dielectric substrate26is a printed circuit board or a plastic substrate, but the disclosure is not limited thereto. It is feasible to use any carrier on which the radiation metal body12, the via30, and the ground plane28as the dielectric substrate26of the disclosure.

In an embodiment, as shown inFIG.1toFIG.5, the radiation metal body12and the ground plane28are respectively formed on the first surface261and the second surface262of the dielectric substrate26by printing. In an embodiment, the dielectric substrate26, and the radiation metal body12and the ground plane28on the dielectric substrate26are printed circuit boards (PCB) having antenna patterns printed thereon.

In an embodiment, as shown inFIG.1toFIG.5, the radiation metal body12and the ground plane28are made of conductive materials, such as silver, copper, iron, aluminum, or alloys thereof, but the disclosure is not limited thereto.

In an embodiment, the ground plane28is an independent metal sheet or metal layer, or located on a metal plane of an electronic device. In an embodiment, the ground plane28is a metal frame of an electronic device or a metal sheet or a sputtered metal portion inside a housing of an electronic device, but the disclosure is not limited thereto. In an embodiment, when the electronic device is a notebook computer, the ground plane28is a system ground plane of a screen of the notebook computer or a metal portion such as an EMI aluminum foil or a sputtered metal region inside a housing of the screen of the notebook computer.

In an embodiment, as shown inFIG.6, in the radiation metal body12used in the ultra-wideband antenna device10in the first embodiment, the radiation metal body12has a length of 9 mm and a width of 8 mm. The first slotted hole14and the second slotted hole16have a width of 0.5 mm, and a length of 2.3 mm. The third slotted hole18and the fourth slotted hole20have a width of 0.5 mm and a length of 1.3 mm. The first length of the first slotted hole14and the second slotted hole16is greater than the second length of the third slotted hole18and the fourth slotted hole20. As shown inFIG.7, a size of the radiation metal body12used in the ultra-wideband antenna device10in the second embodiment is the same as that in the first embodiment shown inFIG.4, except that the feeding source24is located at a distance of 1.5 mm from the second side edge122and at a distance of 1.5 mm from the third side edge123. In the disclosure, simulation experiments are performed on the ultra-wideband antenna device10including the radiation metal body12in the first embodiment ofFIG.6and the ultra-wideband antenna device10including the radiation metal body12in the second embodiment ofFIG.7.

Referring toFIG.1,FIG.3,FIG.8andFIG.9together, simulation of parameter S (S11) and antenna efficiency is carried out by using the ultra-wideband antenna device10including the radiation metal body12in the first embodiment ofFIG.6and the ultra-wideband antenna device10including the radiation metal body12in the second embodiment ofFIG.7. When the antenna device10is in a 6.5 GHz operating band and an 8 GHz operating band, a simulation result of parameter S of the antenna device10is shown inFIG.8. From the curves shown in the diagram, it can be seen that reflection coefficients (S11) of low frequency band (6.5 GHz, a first frequency band) and high frequency band (8 GHz, a second frequency band) resonance modes shown in the diagram are both less than −5 dB (S11<−5 dB), indicating that the ultra-wideband antenna device10in the first embodiment and the ultra-wideband antenna device10in the second embodiment have good reflection coefficients in both the first frequency band and the second frequency band. On the other hand, as shown inFIG.9, under different operating frequency bands, antenna efficiency of the ultra-wideband antenna device10in the first embodiment is equivalent to antenna efficiency of the ultra-wideband antenna device10in the second embodiment, indicating that the ultra-wideband antenna device10also has good antenna radiation efficiency.

Referring toFIG.1andFIG.6together, in an embodiment, current distribution of the ultra-wideband antenna device10including the radiation metal body12in the first embodiment ofFIG.6is simulated.FIG.10is a diagram of current distribution of an ultra-wideband antenna device operating in frequency bands of 6.5 GHz and 8.5 GHz according to the disclosure. As shown inFIG.10, a current under 6.5 GHz is mainly distributed in the first slotted hole14and the second slotted hole16, and a current under 8.5 GHz is mainly distributed in the third slotted hole18and the fourth slotted hole20. Therefore, the disclosure maintains good antenna performance while maintaining the size of the ultra-wideband antenna device10.

In summary, the disclosure relates to an ultra-wideband antenna device, which implements the receiving and transmitting of radio frequency signals in two frequency bands by using a design of a smaller antenna size without increasing the antenna size and space, so that the ultra-wideband antenna device in the disclosure effectively improves the antenna efficiency in limited space to maintain good wireless communication quality. Based on this, the disclosure still maintains good antenna performance in a case that a size of the ultra-wideband antenna device is reduced.

The foregoing embodiments are merely for describing the technical ideas and the characteristics of the disclosure, and are intended to enable those skilled in the art to understand and hereby implement the content of the disclosure. However, the scope of claims of the disclosure is not limited thereto. In other words, equivalent changes or modifications made according to the spirit disclosed in the disclosure shall still fall into scope of the claims of the disclosure.