Patent Publication Number: US-2023140655-A1

Title: Antenna module, connection member, and communication device equipped with the same

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
     The present application is a continuation of International Patent Application No. PCT/JP2021/013873, filed Mar. 31, 2021, which claims priority to Japanese Application No. 2020-114821, filed Jul. 2, 2020, and Japanese Application No. 2020-173343, filed Oct. 14, 2020, the entire contents of each of which being incorporated herein by reference in their entirety. 
    
    
     TECHNICAL FIELD 
     The present disclosure relates to an antenna module, a connection member, and a communication device equipped with the same, more specifically, relates to a technique for improving a degree of freedom in arrangement of an antenna module in a communication device. 
     BACKGROUND ART 
     An antenna module for transmitting and receiving radio waves is generally used in a mobile communication device represented by a mobile phone or a smartphone. In such mobile communication devices, there is still a high need for reduction in size and thickness, and accordingly, there is a demand for further reduction in size and height of devices such as antenna modules mounted in the devices. 
     In recent years, as a display region (display) of a communication device is enlarged, a position where a radiating element (antenna element) can be arranged in the communication device may be greatly limited. In this case, it may be difficult to dispose the antenna element close to a motherboard on which a circuit (IC: Integrated Circuit) for processing a radio frequency signal is disposed, or a situation may arise in which the arrangement of the circuit on the motherboard is limited. 
     In response to such a problem, for example, Japanese Unexamined Patent Application Publication No. 2020-47688 (Patent Document 1) discloses a configuration of a multilayer circuit board in which a multilayer substrate including a wiring portion having flexibility and a ceramic multilayer substrate on which an antenna element is disposed are integrated. In the multilayer circuit board disclosed in Japanese Unexamined Patent Application Publication No. 2020-47688 (Patent Document 1), an IC for a radio frequency signal is disposed in the wiring portion of the multilayer substrate, and the wiring portion is connected to a motherboard, thereby increasing the degree of freedom in arrangement of the antenna element. 
     CITATION LIST 
     Patent Document 
     
         
         Patent Document 1: Japanese Unexamined Patent Application Publication No. 2020-47688 
       
    
     SUMMARY 
     Technical Problems 
     On the other hand, in the configuration of Japanese Unexamined Patent Application Publication No. 2020-47688 (Patent Document 1), when the length of the wiring portion is increased, a radio frequency signal is attenuated due to an increase in loss in the wiring portion, and there is a possibility that antenna characteristics are deteriorated such as insufficient power of radiating radio waves or deterioration in quality of a reception signal. 
     The present disclosure has been made to solve the above-described problem, as well as other problems, and an object of the present disclosure is to improve the degree of freedom of layout in a communication device while suppressing deterioration of antenna characteristics in an antenna module. 
     Solutions to Problems 
     An antenna module according to an aspect of the present disclosure includes a first substrate, a second substrate, a connection member connected between the first substrate and the second substrate, and an amplifier circuit disposed on the connection member. A radiating element is disposed on the first substrate. A feed circuit that supplies a radio frequency signal to the radiating element is disposed on the second substrate. The connection member transmits a radio frequency signal between the feed circuit and the radiating element. The amplifier circuit amplifies a radio frequency signal transmitted between the feed circuit and the radiating element. The amplifier circuit is disposed at a position between a connecting point with the first substrate and a connecting point with the second substrate in the connection member. 
     A connection member according to another aspect of the present disclosure relates to a connection member for connecting a first substrate and a second substrate included in an antenna module. The connection member includes a third substrate and an amplifier circuit. A radiating element is disposed on the first substrate. A feed circuit for supplying a radio frequency signal to the radiating element is disposed on the second substrate. The third substrate transmits a radio frequency signal between the feed circuit and the radiating element. The amplifier circuit amplifies a radio frequency signal transmitted between the feed circuit and the radiating element. The amplifier circuit is disposed at a position between a connecting point with the first substrate and a connecting point with the second substrate in the third substrate. 
     Advantageous Effects of Disclosure 
     In the antenna module according to the present disclosure, the first substrate on which the radiating element is disposed and the second substrate on which the feed circuit is disposed are connected to each other by the connection member, and the amplifier circuit is disposed at a position between a connecting point with the first substrate and a connecting point with the second substrate in the connection member. With such a configuration, the second substrate (motherboard) on which the feed circuit is disposed and the radiating element can be disposed separately from each other, and thus the degree of freedom in arrangement of the radiating element in the device can be increased. Further, by disposing the amplifier circuit on the connection member, it is possible to reduce a loss caused by extension of a signal transmission distance between the feed circuit and the radiating element. Therefore, in the antenna module, it is possible to improve the degree of freedom of layout in the communication device while suppressing deterioration of antenna characteristics. 
    
    
     
       BRIEF DESCRIPTION OF DRAWINGS 
         FIG.  1    is a block diagram of a communication device to which an antenna module according to Embodiment 1 is applied. 
         FIG.  2    is a diagram illustrating detail of a front end module in  FIG.  1   . 
         FIG.  3    is a side view of the antenna module according to Embodiment 1. 
         FIG.  4    is a view illustrating an example of an internal structure of a connection member. 
         FIG.  5    is a side view of an antenna module according to Embodiment 2. 
         FIG.  6    is a side view of an antenna module according to Modification 1. 
         FIG.  7    is a side view of an antenna module according to Embodiment 3. 
         FIG.  8    is a plan view of an antenna module according to Modification 2. 
         FIG.  9    is a view illustrating an arrangement example of an antenna module according to Modification 3 in the communication device. 
         FIG.  10    is a view illustrating another arrangement example of the antenna module in the communication device. 
         FIG.  11    is a view illustrating a first modification of a connection terminal. 
         FIG.  12    is a view illustrating an example of the connection terminal in  FIG.  11   . 
         FIG.  13    is a view illustrating a second modification of the connection terminal. 
         FIG.  14    is a block diagram of a communication device to which an antenna module according to Embodiment 4 is applied. 
         FIG.  15    is a side view of the antenna module according to Embodiment 4. 
         FIG.  16    is a partial cross-sectional view of an antenna device. 
         FIG.  17    is a view for explaining a configuration of a diplexer. 
         FIG.  18    includes views illustrating an arrangement example of a filter device on a motherboard. 
         FIG.  19    includes views illustrating an arrangement example of a filter device in the antenna device. 
         FIG.  20    is a block diagram of a communication device to which an antenna module according to Modification 4 is applied. 
         FIG.  21    is a cross-sectional view for explaining a connection state of a feed wiring in an antenna device. 
     
    
    
     DESCRIPTION OF EMBODIMENTS 
     Hereinafter, embodiments of the present disclosure will be described in detail with reference to the drawings. Note that the same or corresponding portions in the drawings are denoted by the same reference numerals, and description thereof will not be repeated. 
     Embodiment 1 
     (Basic Configuration of Communication Device) 
       FIG.  1    is an example of a block diagram of a communication device  10  to which an antenna module  100  according to Embodiment 1 is applied. The communication device  10  is, for example, a mobile terminal such as a mobile phone, a smartphone, or a tablet, a personal computer having a communication function, a base station, or the like. An example of the band of frequencies of radio waves used in the antenna module  100  according to the present embodiment is radio waves in a millimeter wave band with the center frequency of, for example, 28 GHz, 39 GHz, 60 GHz, and the like, but radio waves in the frequency bands other than described above may be used. 
     Referring to  FIG.  1   , the communication device  10  includes the antenna module  100  and a BBIC  200  constituting a baseband signal processing circuit. The antenna module  100  includes an RFIC  110  which is an example of a feed circuit, an antenna device  120 , and a front end module (hereinafter also referred to as “FEM”)  130 . The communication device  10  up-converts a signal transmitted from the BBIC  200  to the antenna module  100  into a radio frequency signal and radiates the radio frequency signal from the antenna device  120 , and down-converts a radio frequency signal received by the antenna device  120  and processes the signal in the BBIC  200 . 
     In  FIG.  1   , for ease of description, only configurations corresponding to four feed elements  121  among a plurality of feed elements  121  (also referred to herein as “radiating elements”). Moreover, the feed/radiating elements include structures that not only launch electrical current/voltage signals into a wireless propagation medium as electromagnetic waves, but also transduce electromagnetic waves that interact with radiating elements into current/voltage receive signals. The feed elements  121  constituting the antenna device  120  are illustrated, and configurations corresponding to the other feed elements  121  having the same configuration are omitted. Note that although  FIG.  1    illustrates an example in which the antenna device  120  is formed by the plurality of feed elements  121  arranged in a two-dimensional array, the number of feed elements  121  is not necessarily plural, and the antenna device  120  may be formed by one feed element  121 . 
     Alternatively, a one-dimensional array in which the plurality of feed elements  121  is arranged in line may be used. In the present embodiment, the feed element  121  is a patch antenna having a flat plate shape. 
     The RFIC  110  includes switches  111 A to  111 D,  113 A to  113 D, and  117 , power amplifiers  112 AT to  112 DT, low noise amplifiers  112 AR to  112 DR, attenuators  114 A to  114 D, phase shifters  115 A to  115 D, a signal combiner/splitter  116 , a mixer  118 , and an amplifier circuit  119 . 
     Under a condition a radio frequency signal is transmitted, the switches  111 A to  111 D and  113 A to  113 D are controlled to be switched to the power amplifiers  112 AT to  112 DT side, and the switch  117  is connected to a transmission-side amplifier of the amplifier circuit  119 . Under a condition a radio frequency signal is received, the switches  111 A to  111 D and  113 A to  113 D are controlled to be switched to the low noise amplifiers  112 AR to  112 DR side, and the switch  117  is connected to a reception-side amplifier of the amplifier circuit  119 . 
     The signal transmitted from the BBIC  200  is amplified by the amplifier circuit  119  and up-converted by the mixer  118 . A transmission signal, which is the up-converted radio frequency signal, is divided into four signals by the signal combiner/splitter  116 . Each of the four signals passes through respective four signal paths, and is fed to different feed elements  121 , respectively. At this time, it is possible to adjust the directivity of the antenna device  120  by individually adjusting phase shift degree of the phase shifters  115 A to  115 D arranged in the respective signal paths. 
     Reception signals, which are radio frequency signals received by the feed elements  121 , respectively pass through four different signal paths, and are combined by the signal combiner/splitter  116 . The combined reception signal is down-converted by the mixer  118 , amplified by the amplifier circuit  119 , and transmitted to the BBIC  200 . 
     The RFIC  110  is formed as a one chip integrated circuit component including the above-described circuit configuration, for example. Alternatively, the devices (switches, power amplifiers, low noise amplifiers, attenuators, and phase shifters) corresponding to the feed elements  121  in the RFIC  110  may be formed as a one chip integrated circuit component for each of the corresponding feed elements  121 . 
     The FEM  130  includes FEMs  130 A to  130 D. The FEMs  130 A to  130 D are connected to the switches  111 A to  111 D in the RFIC  110 , respectively. 
     As illustrated in  FIG.  2   , each of the FEMs  130 A to  130 D includes switches  131  and  132 , a power amplifier  133 , and a low noise amplifier  134 . In the FEM  130 , the switches  131  and  132  are switched to the power amplifier  133  side when transmitting a radio frequency signal, and the switches  131  and  132  are switched to the low noise amplifier  134  side when receiving a radio frequency signal, similar to the switches  111 A to  111 D and  113 A to  113 D, the power amplifiers  112 AT to  112 DT, and the low noise amplifiers  112 AR to  112 DR provided inside the RFIC  110 . 
     As described above, the FEMs  130 A to  130 D are amplifier circuits, which amplify a radio frequency signal transmitted between the RFIC  110  and the antenna device  120  to compensate for attenuation occurring between the RFIC  110  and the antenna device  120 . In particular, it is effective under a condition the length of a signal transmission path from the RFIC  110  to the antenna device  120  is relatively long and an amplification factor is insufficient in the power amplifier and the low noise amplifier in the RFIC  110 . Note that although the case where the FEM  130  includes both the power amplifier  133  and the low noise amplifier  134  has been described in  FIG.  2   , the FEM  130  only needs to include at least one of the power amplifier  133  and the low noise amplifier  134 , and may include either the power amplifier  133  or the low noise amplifier  134 . 
     (Configuration of Antenna Module) 
       FIG.  3    is a side view of the antenna module  100  according to Embodiment 1. The antenna module  100  includes the RFIC  110 , the antenna device  120  in which the feed element  121  is formed on a dielectric substrate  122 , the FEM  130 , and a connection member  140 . The RFIC  110  is disposed on a motherboard  250 , and is electrically connected to the BBIC  200  disposed on the motherboard  250  by a connection wiring  260 . Note that the “dielectric substrate  122 ” and the “motherboard  250 ” in Embodiment 1 correspond to a “first substrate” and a “second substrate” in the present disclosure, respectively. Note that in  FIG.  3    and the following description, a normal direction of the motherboard  250  is referred to as a Z-axis direction, and directions orthogonal to the Z-axis direction (in-plane directions of the motherboard  250 ) are referred to as an X-axis direction and a Y-axis direction. 
     The dielectric substrate  122  on which the feed element  121  is formed in the antenna device  120  is, for example, a low temperature co-fired ceramics (LTCC) multilayer substrate, a multilayer resin substrate formed by laminating a plurality of resin layers made of a resin such as epoxy or polyimide, a multilayer resin substrate formed by laminating a plurality of resin layers made of liquid crystal polymer (LCP) having a lower dielectric constant, a multilayer resin substrate formed by laminating a plurality of resin layers made of fluororesin, a multilayer resin substrate formed by laminating a plurality of resin layers made of polyethylene terephthalate (PET) material, or a ceramics multilayer substrate other than LTCC. Note that the dielectric substrate  122  does not necessarily have a multilayer structure, and may be a single-layer substrate. Alternatively, the dielectric substrate  122  may be a housing of the communication device  10 . 
     The feed element  121  has a flat plate shape and is formed of a conductor such as copper or aluminum. The shape of the feed element  121  is not limited to a rectangle as illustrated in  FIG.  1   , but may be a polygon, a circle, an ellipse, or a cross shape. The feed element  121  is formed on a surface of the dielectric substrate  122  or in an internal layer. Although an array antenna in which the four feed elements  121  are arranged in one direction is illustrated in the example of  FIG.  3   , the configuration may be adopted in which the feed element  121  is singly used, or a plurality of feed elements is arranged one dimensionally or two dimensionally. Note that although not illustrated in  FIG.  3   , a ground electrode is disposed on the dielectric substrate  122  so as to face the feed element  121 . 
     The connection member  140  is a member for transmitting a radio frequency signal from the RFIC  110  disposed on the motherboard  250  to the antenna device  120 , and as will be described later with reference to  FIG.  4   , has a plurality of feed wirings formed therein. The connection member  140  is used as a signal transmission path under a condition the antenna device  120  is disposed at a position away from the motherboard  250  in the communication device  10 . 
     Similar to the dielectric substrate  122 , the connection member  140  has a dielectric substrate  143  ( FIG.  4   ) formed of a ceramics such as LTCC or a resin. The dielectric substrate  143  has a multilayer structure in which a plurality of dielectric layers is laminated. The connection member  140  may be formed of a rigid material that does not deform, or may be formed of a flexible material as described later with reference to  FIG.  7    to  FIG.  9   . Note that the “dielectric substrate  143 ” corresponds to a “third substrate” of the present disclosure. 
     The connection member  140  is connected to the antenna device  120  by a connection terminal  150  on a front surface  141  of the connection member  140 . In addition, the connection member  140  is connected to the motherboard  250  by a connection terminal  151  on a back surface  142  of the connection member  140 . The connection terminals  150  and  151  are configured to be, for example, a detachable connector. Note that the connection terminals  150  and  151  may be formed by a solder bump. 
     In the connection member  140 , the FEM  130  is disposed at a position between a connecting point (i.e., the connection terminal  150 ) with the dielectric substrate  122  of the antenna device  120  and a connecting point (i.e., the connection terminal  151 ) with the motherboard  250 . More specifically, the FEM  130  is disposed at a position closer to the antenna device  120  than the motherboard  250  in the signal transmission path of the connection member  140 . In other words, the FEM  130  is disposed closer to the connection terminal  150  than a middle point (a broken line CL1 in  FIG.  3   ) of a path connecting the connection terminal  150  and the connection terminal  151 . The FEM  130  is disposed at a position that does not overlap the feed element  121  formed in the antenna device  120  in a plan view from the normal direction (Z-axis direction) of the antenna device  120 . 
     The FEM  130  may be directly connected to the connection member  140  using a solder bump, a connector, or the like, or may be connected via an intermediate substrate such as an interposer. Further, in order to reduce the height, a portion where the FEM  130  is disposed in the connection member  140  may be thinner than the other portions. Note that although  FIG.  3    illustrates an example in which the FEM  130  is disposed on the back surface  142  of the connection member  140 , the FEM  130  may be disposed on the front surface  141  of the connection member  140  as an FEM  130 X indicated by a broken line. 
       FIG.  4    is a view illustrating an example of an internal structure of the connection member  140 . In the example of  FIG.  4   , the FEM  130 A (first amplifier) is disposed on the front surface (first surface)  141  of the connection member  140 , and the FEM  130 B (second amplifier) is disposed on the back surface (second surface)  142  of the connection member  140 . In the connection member  140 , feed wirings  161  and  162  and a ground electrode GND of the signal transmission path are formed. The feed wiring  161  (first wiring) transmits a radio frequency signal to the feed element  121  of the antenna device  120  via the FEM  130 A. The FEM  130 A amplifies the radio frequency signal transmitted via the feed wiring  161 . In addition, the feed wiring  162  (second wiring) transmits a radio frequency signal to another feed element  121  via the FEM  130 B. The FEM  130 B amplifies the radio frequency signal transmitted via the feed wiring  162 . 
     The feed wiring  161  and the feed wiring  162  are formed in layers different from each other in the dielectric substrate  143 . The ground electrode GND is formed between the layer in which the feed wiring  161  is formed and the layer in which the feed wiring  162  is formed, and is connected to a reference potential (not illustrated) formed on the motherboard  250  via the connection terminal  151 . In addition, the ground electrode GND is connected to a ground electrode (not illustrated) formed on the dielectric substrate  122  of the antenna device  120  via the connection terminal  150 . By arranging the feed wirings  161  and  162  with the ground electrode GND interposed therebetween, it is possible to ensure isolation between the feed wiring  161  and the feed wiring  162 . 
     As described in  FIG.  2   , the FEM  130  is an amplifier circuit including the power amplifier  133  and/or the low noise amplifier  134 . In a case where the connection member  140  is used, a distance between the RFIC  110  and the antenna device  120  is long as compared with a case where the connection member  140  is not used, and thus the attenuation due to the signal transmission path may increase and the loss may increase. Therefore, the FEM  130  is disposed in the connection member  140 , and a transmission signal from the RFIC  110  to the antenna device  120  and/or a reception signal received by the antenna device  120  are/is amplified to thereby compensate for the loss in the connection member  140 . As a result, it is possible to realize radiation of radio waves with desired power and/or suppression of deterioration in quality of a reception signal. 
     Here, the signal received by the antenna device  120  is generally attenuated while being transmitted by radio waves, so that a signal level is lowered, and further, a noise component is superimposed on the signal to be transmitted. As described above, even while the signal is transmitted through the connection member  140 , the signal is further attenuated by the impedance of the signal transmission path of the connection member  140 . Further, since the transmission signal is also amplified by the amplifier included in the RFIC  110 , the signal level of the reception signal may be lower than that of the transmission signal. In general, since a reception signal has a lower signal to noise ratio than a transmission signal and is more affected by noise, a noise figure (NF) is likely to deteriorate due to a loss occurring in the connection member  140 . Therefore, it is can be beneficial to amplify the reception signal as soon as possible. 
     In the antenna module  100  according to Embodiment 1, as described above, the FEM  130  is disposed at a position closer to the antenna device  120  than to the motherboard  250  in the connection member  140 . Therefore, the amplification of the reception signal is preferentially executed over the amplification of the transmission signal. As a result, it is possible to suppress the deterioration in the quality of the reception signal. 
     Embodiment 2 
     In Embodiment 2, an arrangement configuration in consideration of heat dissipation of the front end module will be described. 
     As described above, the FEM  130  may include the power amplifier  133  for amplifying a transmission signal. In order to radiate a radio wave to a distance, power (electric power) corresponding to the radio wave is required, and thus, in general, the power amplifier for a transmission signal consumes more electric power at the time of amplification than the low noise amplifier  134  that amplifies a reception signal. Therefore, in an antenna module that requires particularly high transmission power, an influence of heat generation at the FEM  130  becomes large. 
     In the communication device  10 , since the motherboard  250  has a larger physical area than the antenna device  120 , the heat dissipation efficiency of the motherboard is higher than that of the antenna device  120 . Therefore, in Embodiment 2, the FEM  130  disposed on the connection member  140  is disposed closer to the motherboard  250  than to the antenna device  120 . This facilitates the transfer of heat generated by the FEM  130  to the motherboard  250 . As a result, it is possible to prevent the temperature of the FEM  130  from becoming high and to reduce a thermal influence on the internal circuit and the surrounding devices and members. 
       FIG.  5    is a side view of an antenna module  100 A according to Embodiment 2. In the antenna module  100 A of  FIG.  5   , the position of the FEM  130  on the connection member  140  is different from that of the antenna module  100  of Embodiment 1. Note that in the antenna module  100 A, description of the same elements as those of the antenna module  100  of  FIG.  3    will not be repeated. 
     To be specific, the FEM  130  is disposed at a position closer to the motherboard  250  than to the antenna device  120  in the signal transmission path of the connection member  140 . In other words, the FEM  130  is disposed closer to the connection terminal  151  than the middle point (the broken line CL1 in  FIG.  5   ) of the path connecting the connection terminal  150  and the connection terminal  151 . With such an arrangement, the heat generated in the FEM  130  is more easily transferred to the motherboard  250  through the dielectric forming the connection member  140  and the conductors such as the feed wirings  161  and  162  and the ground electrode GND inside the connection member  140 , as compared with the arrangement of the antenna module  100  of Embodiment 1. Therefore, it is possible to reduce the influence of heat generation of the FEM  130 . 
     On the other hand, as described in Embodiment 1, it is not preferable to dispose the FEM  130  near the motherboard  250  in the connection member  140  from the viewpoint of the loss of the transmission power and the deterioration of the noise figure (NF). That is, with respect to the installation position of the FEM  130  in the connection member  140 , there is a trade-off relationship between the loss reduction and the heat dissipation efficiency. Therefore, the position of the FEM  130  in the connection member  140  is determined in consideration of the degree of heat generation in the FEM  130  and the required antenna characteristics. 
     (Modification 1) 
     In Modification 1, an arrangement for more efficiently radiating heat from the front end module will be described. 
       FIG.  6    is a side view of an antenna module  100 B according to Modification 1. In the antenna module  100 B, similar to the antenna module  100 A of Embodiment 2, the FEM  130  is disposed on the side close to the motherboard  250  in the connection member  140 , and further, at least a part of the FEM  130  is in contact with the motherboard  250 . More specifically, when viewed from the normal direction of the motherboard  250  in a plan view, an end portion of the connection member  140  and an end portion of the motherboard  250  overlap each other, and the FEM  130  is in contact with the motherboard  250  on a surface opposite to a surface of the FEM  130  mounted on the connection member  140 . 
     With such a configuration, the heat generated in the FEM  130  can be directly transferred to the motherboard  250 , thereby further improving the heat dissipation efficiency. Note that the housing of the FEM  130  may be in direct contact with the motherboard  250 , or a member having high heat-transfer efficiency (for example, a metal such as copper) may be disposed between the FEM  130  and the motherboard  250  to be in contact with each other. 
     Embodiment 3 
     In Embodiment 3, a case where a flexible connection member is used will be described. 
       FIG.  7    is a side view of an antenna module  100 C according to Embodiment 3. In the antenna module  100 C, the connection member  140  of the antenna module  100  illustrated in  FIG.  3    is replaced with a connection member  140 A. Note that in the antenna module  100 C, the description of the same elements as those of the antenna module  100  will not be repeated. 
     Referring to  FIG.  7   , the connection member  140 A is a flexible substrate formed of a material having flexibility, and is configured to be bendable in a thickness direction. Similar to the antenna module  100 , the connection member  140 A is connected to the antenna device  120  at one end portion thereof by the connection terminal  150 , and is connected to the motherboard  250  at the other end portion thereof by the connection terminal  151 . Note that the connection terminal  150  for connecting to the antenna device  120  is disposed on the front surface  141  of the connection member  140 A in  FIG.  7   , but may be disposed on the back surface  142  of the connection member  140 A depending on the bending state of the connection member  140 A. 
     At least one bent portion  145  is formed in the connection member  140 A, and the FEM  130  is disposed between the bent portion  145  and the connection terminal  150  on the antenna device  120  side. Note that the FEM  130  is disposed on the front surface  141  and/or the back surface  142  according to the bending state and the number of bending times of the connection member  140 A. 
     By using such a flexible connection member  140 A, the normal direction of the antenna device  120  (i.e., a radiation direction of radio waves) can be made different from the normal direction of the motherboard  250 , so that the degree of freedom of layout of the motherboard  250  and the antenna device  120  in the housing of the communication device  10  can be improved. 
     Then, by disposing the FEM  130  on the connection member  140 A, it is possible to reduce the loss of the radio frequency signal caused by the extension of the signal transmission path due to the use of the connection member  140 A and to suppress deterioration of antenna characteristics. 
     (Modification 2) 
     In Embodiment 3 of  FIG.  7   , an example of a configuration in which the connection member is bent in the thickness direction has been described. In Modification 2, a configuration in which the connection member is bent in an in-plane direction of a main surface will be described. 
       FIG.  8    is a plan view of an antenna module  100 D according to Modification 2. In the antenna module  100 D, the connection member  140  of the antenna module  100  illustrated in  FIG.  3    is replaced with a connection member  140 B. Note that in the antenna module  100 D, the description of the same elements as those of the antenna module  100  will not be repeated. 
     Referring to  FIG.  8   , the connection member  140 B is a flexible substrate formed of a material having flexibility, and is configured to be bendable in the in-plane direction of the main surface (that is, in an XY plane). In the example of  FIG.  8   , the connection member  140 B extends along the X-axis direction from a portion connected to the motherboard  250 , is bent in the Y-axis direction at a bent portion  146 , is bent again in the X-axis direction at a bent portion  147 , and is connected to the antenna device  120 . Note that the connection member  140 B may be configured to be bendable also in the thickness direction as in Embodiment 3. In addition, the connection member  140 B may be configured to be bendable in a twisting direction around the axis in an extending direction. The FEM  130  is disposed on a front surface and/or a back surface of the connection member  140 B. 
     By using the connection member  140 B like this, it is possible to improve the degree of freedom of layout of the antenna device  120  in the housing of the communication device  10 . Further, by disposing the FEM  130  on the connection member  140 B, it is possible to suppress deterioration of antenna characteristics due to the extension of the signal transmission path. 
     (Modification 3) 
     In Modification 3, an arrangement example in a communication device in the case where a flexible connection member is used will be described. 
       FIG.  9    is a view illustrating an arrangement example of an antenna module  100 E according to Modification 3 in the communication device  10 . In the antenna module  100 E illustrated in  FIG.  9   , a connection member  140 C bendable in the thickness direction is used similar to the connection member  140 A described with reference to  FIG.  7   . The connection member  140 C is bent so as to have a substantially L-shaped cross section. The connection member  140 C is connected to the antenna device  120  at one end portion thereof by the connection terminal  150 , and is connected to the motherboard  250  at the other end portion thereof by the connection terminal  151 . 
     Note that in the antenna device  120  of  FIG.  9   , the plurality of feed elements  121  is arranged along the Y-axis, and is attached to the dielectric portion of a housing  30  of the communication device  10 . Thus, radio waves are radiated in the X-axis direction. 
     The FEM  130  is disposed on the front surface  141  of the connection member  140 C. As described in Embodiment 2, the FEM  130  generates heat by the power amplifier formed therein. Therefore, the FEM  130  is disposed at a position separated from the housing  30 . Accordingly, it is possible to prevent heat from the FEM  130  from being transferred to the housing  30  and prevent the temperature of the housing from locally increasing. Note that a heat insulating member  50  may be disposed between the FEM  130  and the housing  30 . 
     Further, as an FEM  130 Y indicated by a broken line, it may be disposed on the back surface  142  side of the connection member  140 C. In this case, since the connection member  140 C is disposed between the FEM  130 Y and the housing  30 , heat generated in the FEM  130 Y is less likely to be transferred to the housing  30 . 
     As described above, also in the antenna module  100 E according to Modification 3, the degree of freedom of the layout of the antenna device  120  in the housing can be improved by using the connection member  140 C having flexibility. In addition, by arranging the FEM  130  on the connection member  140 C to be separated from the housing  30 , it is possible to suppress deterioration of antenna characteristics due to the use of the connection member  140 C and to suppress heat transfer from the FEM  130  to the housing  30 . 
     Note that although the case where the connection member  140 C is a flexible substrate having flexibility has been described with reference to  FIG.  9   , two rigid substrates may be connected by bonding or soldering to form a substantially L-shaped connection member  140 D as illustrated in  FIG.  10   . 
     &lt;Modification of Connection Terminal&gt; 
     In the above-described embodiment, an example has been described in which the connection terminal  150  used for connection between the connection member and the antenna device and the connection terminal  151  used for connection between the motherboard and the connection member are formed between mutually facing surfaces of members to be connected. However, the connection terminals  150  and  151  may have another connection mode. 
     For example, in connecting the motherboard  250  and the connection member  140 , as illustrated in  FIG.  11   , the end portion of the motherboard  250  and the end portion of the connection member  140  may be arranged so as to face each other, and the respective front surfaces (or back surfaces) of the motherboard  250  and the connection member  140  may be connected to each other by a connection terminal  151 A. Note that as illustrated in  FIG.  12   , the connection terminal  151 A may be a combination of a plurality of connectors  151 A 1  and  151 A 2  each having a conductive pin and/or a socket. 
     Alternatively, as illustrated in  FIG.  13   , a terminal portion may be formed at the end portion of the connection member  140 , and the connection member  140  may be fitted and connected to a connection terminal  151 B mounted on a surface of the motherboard  250 . 
     Note that the connection modes of  FIG.  11    to  FIG.  13    can also be applied to the connection between the connection member  140  and the antenna device  120 . 
     Embodiment 4 
     (Configuration of Communication Device) 
     In Embodiment 4, an example of a case of a so-called dual-band type antenna module capable of radiating radio waves in two different frequency bands from an antenna device will be described. 
       FIG.  14    is a block diagram of a communication device  10 F to which an antenna module  100 F according to Embodiment 4 is applied. Referring to  FIG.  14   , the communication device  10 F includes the antenna module  100 F and the BBIC  200 . The antenna module  100 F includes an RFIC  110 F, an antenna device  120 F, the FEM  130 , and filter devices  170  and  180 . 
     The antenna device  120 F is a dual-band type antenna device as described above, and each of the radiating elements arranged in the antenna device  120 F includes two feed elements  121 F and  125 F. Radio frequency signals are individually supplied from the RFIC  110 F to the feed elements  121 F and  125 F. Note that in Embodiment 4, the “feed element  121 F” and the “feed element  125 F” correspond to a “first element” and a “second element”, respectively, in the present disclosure. 
     The RFIC  110 F includes the switches  111 A to  111 D and  113 A to  113 D, switches  111 E to  111 H,  113 E to  113 H,  117 A, and  117 B, the power amplifiers  112 AT to  112 DT, power amplifiers  112 ET to  112 HT, the low noise amplifiers  112 AR to  112 DR, low noise amplifiers  112 ER to  112 HR, the attenuators  114 A to  114 D, attenuators  114 E to  114 H, the phase shifters  115 A to  115 D, phase shifters  115 E to  115 H, signal combiners/splitters  116 A and  116 B, mixers  118 A and  118 B, and amplifier circuits  119 A and  119 B. 
     Among them, the configurations of the switches  111 A to  111 D,  113 A to  113 D, and  117 A, the power amplifiers  112 AT to  112 DT, the low noise amplifiers  112 AR to  112 DR, the attenuators  114 A to  114 D, the phase shifters  115 A to  115 D, the signal combiner/splitter  116 A, the mixer  118 A, and the amplifier circuit  119 A are a circuit for the high-frequency-side feed element  121 F. In addition, the configurations of the switches  111 E to  111 H,  113 E to  113 H, and  117 B, the power amplifiers  112 ET to  112 HT, the low noise amplifiers  112 ER to  112 HR, the attenuators  114 E to  114 H, the phase shifters  115 E to  115 H, the signal combiner/splitter  116 B, the mixer  118 B, and the amplifier circuit  119 B are a circuit for the low-frequency-side feed element  125 F. 
     In the case of transmitting a radio frequency signal, the switches  111 A to  111 H and  113 A to  113 H are switched to the power amplifiers  112 AT to  112 HT side, and the switches  117 A and  117 B are connected to the transmission-side amplifiers of the amplifier circuits  119 A and  119 B. In the case of receiving a radio frequency signal, the switches  111 A to  111 H and  113 A to  113 H are switched to the low noise amplifiers  112 AR to  112 HR side, and the switches  117 A and  117 B are connected to the reception-side amplifiers of the amplifier circuits  119 A and  119 B. 
     The filter device  170  (first filter device) includes diplexers  170 A to  170 D. In addition, the filter device  180  (second filter device) includes diplexers  180 A to  180 D. Each diplexer includes a high pass filter (first filter) that passes a radio frequency signal in a high frequency band (first frequency band) and a low pass filter (second filter) that passes a radio frequency signal in a low frequency band (second frequency band). 
     The high pass filters in the diplexers  170 A to  170 D are connected to the switches  111 A to  111 D in the RFIC  110 F, respectively. In addition, the low pass filters in the diplexers  170 A to  170 D are connected to the switches  111 E to  111 H in the RFIC  110 F, respectively. The diplexers  170 A to  170 D are connected to FEMs  130 A to  130 D, respectively. In addition, the FEMs  130 A to  130 D are connected to the diplexers  180 A to  180 D, respectively. 
     The high pass filters in the diplexers  180 A to  180 D are connected to feed elements  121 F 1  to  121 F 4  in the antenna device  120 F, respectively. The low pass filters in the diplexers  180 A to  180 D are connected to feed elements  125 F 1  to  125 F 4  in the antenna device  120 F, respectively. 
     As described above, the path for transmitting the radio frequency signal to the radiating elements each including the feed element  121 F and the feed element  125 F is made common between the filter device  170  and the filter device  180 . 
     (Configuration of Antenna Module) 
     Next, a detailed configuration of the antenna module  100 F according to Embodiment 4 will be described with reference to  FIG.  15    to  FIG.  17   .  FIG.  15    is a side view of the antenna module  100 F.  FIG.  16    is a partial cross-sectional view of the antenna device  120 F.  FIG.  17    is a view for explaining an example of a configuration of a diplexer. 
     In  FIG.  15   , the antenna device  120  in the antenna module  100  described above with reference to  FIG.  3    is replaced with the antenna device  120 F, and the RFIC  110  is replaced with the RFIC  110 F. In addition, in  FIG.  15   , the filter device  170  is newly provided in the motherboard  250 , and the filter device  180  is newly provided in the antenna device  120 F. In  FIG.  15   , description of elements overlapping  FIG.  3    will not be repeated. Note that although the BBIC  200  is mounted on the motherboard  250  in  FIG.  15   , the BBIC  200  may be formed on another substrate (not illustrated). 
     With reference to  FIG.  15    to  FIG.  17   , the antenna device  120 F is configured so that radio waves in two different frequency bands are possible as described above. The antenna device  120 F includes the feed element  121 F and the feed element  125 F. The feed element  121 F and feed element  125 F are arranged to overlap each other when the dielectric substrate  122  is viewed in a plan view from the normal direction, and the feed element  125 F is disposed between the feed element  121 F and the ground electrode GND. 
     The size of the feed element  121 F is smaller than the size of the feed element  125 F. Therefore, radio waves are radiated from the feed element  121 F in a higher frequency band than that of the feed element  125 F. A radio frequency signal from the RFIC  110 F is individually supplied to each of the feed element  121 F and the feed element  125 F. More specifically, as illustrated in  FIG.  16   , a radio frequency signal on the high-frequency side (for example, 39 GHz band) is supplied to the feed element  121 F by a feed wiring  191 , and a radio frequency signal on the low-frequency side (for example, 28 GHz band) is supplied to the feed element  125 F by a feed wiring  192 . The feed wiring  191  penetrates the feed element  125 F and is connected to a feed point SP 1  of the feed element  121 F. The feed wiring  192  is connected to a feed point SP 2  of the feed element  125 F. 
     As illustrated in  FIG.  17   , the filter devices  170  and  180  are configured to include a plate-shaped electrode and a via. More specifically, the filter devices  170  and  180  include a terminal T 1  to which the feed wiring made common is connected, a terminal T 2  to which a low-frequency-side feed wiring is connected, and a terminal T 3  to which a high-frequency-side feed wiring is connected. A low pass filter  210  is formed between the terminal T 1  and the terminal T 2 , and a high pass filter  220  is formed between the terminal T 1  and the terminal T 3 . 
     The low pass filter  210  includes a linear plate electrode  211  connected to the terminal T 1  and the terminal T 2 , and plate electrodes  212  and  213  branched from the plate electrode  211  and arranged to face each other with a predetermined gap therebetween. The plate electrode  212  and the plate electrode  213  are arranged in line symmetry when viewed in a plan view from the normal direction of the substrate, and are electromagnetically coupled to each other. End portions of the plate electrode  212  and the plate electrode  213  are connected to the ground electrode GND by a via V 1  and a via V 2 , respectively. In other words, the low pass filter  210  constitutes an LC series resonance circuit of a so-called n-type circuit including a series inductor (plate electrode  211 ) formed between the terminal T 1  and the terminal T 2 , and two shunt stubs (plate electrodes  212 ,  213 +vias V 1 , V 2 ) branched from the inductor. 
     The high pass filter  220  includes a linear plate electrode  221  whose one end is connected to the terminal T 1 , plate electrodes  222  and  223 , and a capacitor electrode C 1 . The plate electrode  222  is branched from the plate electrode  221 , and an end portion thereof is connected to the ground electrode GND by a via V 3 . The other end of the plate electrode  221  is opposed to the capacitor electrode C 1  disposed in a different layer. The plate electrode  221  and the capacitor electrode C 1  form a capacitor. One end of the plate electrode  223  is connected to the ground electrode GND through a via V 4 , and the other end thereof is connected to the capacitor electrode C 1  through a via V 5 . In addition, the plate electrode  223  is also connected to the terminal T 3 . In other words, the high pass filter  220  constitutes an LC series resonance circuit of a so-called  7   t -type circuit including a series capacitor (plate electrode  221 , capacitor electrode C 1 ) formed between the terminal T 1  and the terminal T 3  and two shunt stubs (plate electrodes  222 ,  223 +vias V 3 , V 4 ) respectively branched from both ends of the capacitor. 
     Note that the low pass filter  210  and the high pass filter  220  may be arranged in the same layer as illustrated in  FIG.  17   , or may be arranged in different layers so as to partially overlap each other when viewed in a plan view from the normal direction of the substrate on which the filter device is formed. Under a condition the low pass filter  210  and the high pass filter  220  are formed in different layers, the ground electrode GND is disposed in a layer between the low pass filter  210  and the high pass filter  220  in order to prevent mutual coupling. 
     The filter device  170  is formed inside the motherboard  250 . Further, the filter device  180  is formed inside the dielectric substrate  122  of the antenna device  120 F. 
     Two radio frequency signals of different frequency bands individually output from the RFIC  110 F are transmitted to the feed wiring made common via the filter device  170 . The feed wiring made common extends to the antenna device  120 F via the connection terminal  151 , the connection member  140 , and the connection terminal  150 . 
     The feed wiring made common is branched into a high-frequency-side path and a low-frequency-side path by the filter device  180  formed in the antenna device  120 F. The high-frequency-side path is connected to the feed element  121 F, and the low-frequency-side path is connected to the feed element  125 F. 
     In the case of a dual-band type antenna module in which power is individually supplied to each feed element, basically, the same number of feed wirings as the number of feed elements are required from the RFIC to the feed elements. In particular, in a case of a so-called dual polarization type antenna device capable of radiating radio waves in two different polarization directions from each feed element, twice as many feed wirings as the number of feed elements are required. For example, as illustrated in  FIG.  14    and  FIG.  15   , under a condition four feed elements are provided for each frequency band (the total number of feed elements is eight),  16  feed wirings are required in the case of a dual polarization type antenna device. In this case, it is necessary to increase the width or thickness of the connection member, which may make it difficult to arrange the connection member in the device or may make it impossible to ensure the flexibility of the connection member. In addition, also since the connection terminals  150  and  151  require the same number of terminals as the number of feed wirings arranged in the connection member, the connector size increases, and the arrangement area of the connector in the motherboard and the antenna device increases. 
     On the other hand, in the antenna module  100 F according to Embodiment 4, the filter devices (diplexer)  170  and  180  are arranged in the motherboard  250  and the antenna device  120 F, respectively, so that the feed wiring is partially made common and the total number of feed wirings arranged in the connection member  140  can be reduced. This makes it possible to reduce the size (width and thickness) of the connection member  140  and to reduce the mounting areas on the motherboard  250  and the antenna device  120 F. In addition, the number of terminals of the FEM arranged in the connection member  140  can also be reduced. 
     Next, an arrangement example of the filter device on the motherboard  250  and the antenna device  120 F will be described.  FIG.  18    includes views illustrating an arrangement example of the filter device  170  on the motherboard  250 . In addition,  FIG.  19    includes views illustrating an arrangement example of the filter device  180  in the antenna device  120 F. 
     Referring to  FIG.  18   , since each diplexer included in the filter device  170  is connected to the RFIC  110 F and the feed wiring in the connection member  140  as described above, the filter device  170  is disposed between the RFIC  110 F and the connection terminal  151  connecting the connection member  140  when the motherboard  250  is viewed in a plan view ( FIG.  18 ( a ) ). 
     Note that the RFIC  110  and the connection member  140  are mounted on an outer surface of the motherboard  250 , and the filter device  170  is formed inside the motherboard  250 . Therefore, the filter device  170  may be disposed at a position partially overlapping the RFIC  110 F and/or the connection member  140  when the motherboard  250  is viewed in a plan view as illustrated in  FIG.  18 ( b ) . In addition, when the filter device  170  is formed as a chip component, the filter device  170  may be disposed on the outer surface of the motherboard  250 . 
     Referring to  FIG.  19   , each diplexer included in the filter device  180  is disposed on the path connecting the connection terminal  150  and each of the feed elements in the antenna device  120 F.  FIGS.  19 ( a ) and  19 ( b )  illustrate an example in which the filter device  180  is disposed in a space between an end portion of the dielectric substrate  122  to which the connection member  140  is connected and a radiating element closest to the end portion. In  FIG.  19 ( a ) , the diplexers are arranged in two rows so that a longitudinal direction of the outer shape of each diplexer is oriented in a direction orthogonal to an array direction of the radiating elements. In  FIG.  19 ( b ) , the diplexers are arranged so that the longitudinal direction of the outer shape of each diplexer is oriented in the array direction of the radiating elements. In the case of such an arrangement, although the size of the dielectric substrate  122  in the array direction of the radiating elements is slightly increased, there is no increase in the size in the thickness direction as in the example of  FIG.  19 ( d )  to be described later, and therefore this arrangement is suitable for the case where the height is reduced. 
       FIG.  19 ( c )  illustrates an arrangement example in which each diplexer is arranged side by side with the corresponding radiating element in a direction orthogonal to the array direction of the radiating elements. In the case of this arrangement example, since a space in the vicinity of the connection with the connection member  140  can be secured in the dielectric substrate  122 , it is easy to design the wiring layout in the dielectric substrate  122 . In addition, since power can be supplied to the vicinity of each of the radiating elements by the feed wiring made common, the number of feed wirings in the antenna device  120 F can be reduced. Also in this case, when the dielectric substrate  122  is viewed in a plan view, the radiating element and the diplexer do not overlap each other, which is suitable for the case where the height is reduced. 
     In an arrangement example of  FIG.  19 ( d ) , the diplexer is disposed in the vicinity of each radiating element as in  FIG.  19 ( c ) , but the diplexer is disposed so as to partially overlap the corresponding radiating element when the dielectric substrate  122  is viewed in a plan view. In other words, the diplexer is disposed in the layer under the radiating element in the dielectric substrate  122 . In the case of such an arrangement, although there is a possibility that the dimension of the dielectric substrate  122  in the thickness direction increases, a dimension W1 of the dielectric substrate  122  in the width direction (a direction orthogonal to the array direction of the radiating elements) can be reduced, which is suitable for reducing the size of the antenna device  120 F. 
     As described above, in the dual-band type antenna module capable of radiating radio waves in two different frequency bands, the diplexers are arranged in front of and behind the connection member, so that the number of feed wirings arranged in the connection member can be reduced. As a result, in the antenna module, it is possible to suppress an increase in size due to an increase in the number of wirings. 
     Note that even in the case of radiating radio waves in one frequency band, by using the filter device as described above for a dual polarization type antenna module capable of radiating radio waves in two different polarization directions, it is possible to reduce the number of feed wirings arranged in the connection member. 
     In addition, in the antenna device  120 F described above, the configuration in which the feed element  121 F and the feed element  125 F are arranged so as to overlap each other when viewed in a plan view from the normal direction of the dielectric substrate  122  has been described, but the feed element  121 F and the feed element  125 F may be arranged so as not to overlap each other. 
     (Modification 4) 
     In Embodiment 4, an example in which a diplexer is used has been described as a configuration in which individual power feeding is performed to a radiating element in a dual-band type antenna module. 
     In Modification 4, an example in which a diplexer is used in a dual-band type antenna module using a feed element and a parasitic element as radiating elements will be described. 
       FIG.  20    is a block diagram of a communication device  10 G to which an antenna module  100 G according to Modification 4 is applied. Referring to  FIG.  20   , the communication device  10 G includes the antenna module  100 G and the BBIC  200 . The antenna module  100 G includes an RFIC  110 G, an antenna device  120 G, the FEM  130 , and the filter device  170 . Similar to the antenna module  100 F of Embodiment 4, the FEM  130  is disposed on the connection member  140 , and the filter device  170  is disposed on the motherboard  250 . Note that since a configuration of the RFIC  110 G is the same as the configuration of the RFIC  110 F of Embodiment 4, detailed description thereof will not be repeated. 
     The antenna device  120 G is a dual-band type antenna device similar to the antenna device  120 F, but includes a feed element  121 G and a parasitic element  126 G as respective radiating elements. As illustrated in the partial cross-sectional view of the antenna device  120 G in  FIG.  21   , the parasitic element  126 G is disposed between the feed element  121 G and the ground electrode GND in the antenna device  120 G. Note that in Modification 4, the “feed element  121 G” and the “parasitic element  126 G” correspond to the “first element” and the “second element”, respectively, in the present disclosure. 
     As illustrated in  FIG.  21   , the feed wiring  191  penetrates the parasitic element  126 G and is connected to the feed point SP 1  of the feed element  121 G. When a radio frequency signal on the high-frequency side corresponding to the feed element  121 G (for example, 39 GHz band) is supplied to the feed wiring  191 , radio waves are radiated from the feed element  121 G. On the other hand, when a radio frequency signal on the low-frequency side corresponding to the parasitic element  126 G (for example, 28 GHz band) is supplied to the feed wiring  191 , the radio frequency signal is transmitted to the parasitic element  126 G in a non-contact manner by electromagnetic field coupling between the feed wiring  191  and the parasitic element  126 G in the penetrating portion of the feed wiring  191 . Thus, radio waves are radiated from the parasitic element  126 G. 
     Thus, also in the dual-band type antenna module using the feed element  121 G and the parasitic element  126 G, since radio frequency signals in respective frequency bands are individually output from the RFIC  110 G, when these signals are transmitted to the antenna device  120 G using individual feed wirings, it is necessary to arrange the same number of feed wirings as the number of radiating elements in the connection member  140 . However, in the antenna module  100 G according to Modification 4, the filter device  170  including the diplexer is provided on the motherboard  250 , and the feed wiring for transmitting the radio frequency signal on the high-frequency side and the feed wiring for transmitting the radio frequency signal on the low-frequency side are made common, whereby the number of feed wirings arranged in the connection member  140  can be reduced. As a result, in the antenna module, it is possible to suppress an increase in size due to an increase in the number of wirings. 
     Note that although the configuration in which the filter device including the diplexer is used for the dual-band type antenna module has been described in Embodiment 4 and Modification 4, it is possible to reduce the number of feed wirings arranged in the connection member by using the filter device including a triplexer or a multiplexer even in an antenna module capable of radiating radio waves in three or more different frequency bands. 
     It should be understood that the embodiments disclosed herein are illustrative in all respects and are not restrictive. The scope of the present disclosure is defined not by the above description of the embodiments but by the claims, and is intended to include all changes within the meaning and scope equivalent to the claims. 
     REFERENCE SIGNS LIST 
       10 ,  10 F,  10 G COMMUNICATION DEVICE,  30  HOUSING,  50  HEAT INSULATING MEMBER,  100 ,  100 A to  100 G ANTENNA MODULE,  110 ,  110 F,  110 G RFIC,  111 A to  111 H,  113 A to  113 H,  117 ,  117 A,  117 B,  131 ,  132  SWITCH,  112 AR to  112 HR,  134  LOW NOISE AMPLIFIER,  112 AT to  112 HT,  133  POWER AMPLIFIER,  114 A to  114 H ATTENUATOR,  115 A to  115 H PHASE SHIFTER,  116 ,  116 A,  116 B SIGNAL COMBINER/SPLITTER,  118 ,  118 A,  118 B MIXER,  119 ,  119 A,  119 B AMPLIFIER CIRCUIT,  120 ,  120 F ANTENNA DEVICE,  121 ,  121 F 1  to  121 F 4 ,  121 G,  121 G 1  to  121 G 4 ,  125 F,  125 F 1  to  125 F 4  FEED ELEMENT,  122 ,  143  DIELECTRIC SUBSTRATE,  126 G,  126 G 1  to  126 G 4  PARASITIC ELEMENT,  130 ,  130 A to  130 D FEM,  140 ,  140 A to  140 D CONNECTION MEMBER,  141  FRONT SURFACE,  142  BACK SURFACE,  145  to  147  BENT PORTION,  150 ,  151 ,  151 A,  151 B CONNECTION TERMINAL,  151 A 1  to  151 A 4  CONNECTOR,  161 ,  162 ,  191 ,  192  FEED WIRING,  170 ,  180  FILTER DEVICE,  170 A to  170 D,  180 A to  180 D DIPLEXER,  200  BBIC,  210  LOW PASS FILTER,  220  HIGH PASS FILTER,  211  to  213 ,  221  to  223  PLATE ELECTRODE,  250  MOTHERBOARD,  260  CONNECTION WIRING, C 1  CAPACITOR ELECTRODE, GND GROUND ELECTRODE, SP 1 , SP 2  FEED POINT, T 1  to T 3  TERMINAL, V 1  to V 5  VIA