Antenna module

Abstract

This invention provides an improved dual-polarized waveform antenna module. The antenna module (1) includes first and second half-wavelength filters (F1, F2) inserted between a first signal pad (11) and a second signal pad (12) and an antenna element (80). The second and third resonant patterns (32, 33) contained in the first half-wavelength filter (F1) are arranged in a row extending in the direction A along the diagonal of the antenna element (80), and the first and fourth resonant patterns (31, 34) extend in the direction B relative to the second and third resonant patterns (32, 33). The second half-wavelength filter (F2) is configured symmetrically with respect to the diagonal with respect to the first half-wavelength filter (F1). Accordingly, the dual-polarized waveform antenna module can be miniaturized.

Description

Technical Field

[0001] This disclosure relates to antenna modules. Background Technology

[0002] Patent document 1 discloses a dual-polarized waveform antenna module.

[0003] Existing technical documents

[0004] Patent documents

[0005] Patent Document 1: International Publication No. WO2019 / 054063 Summary of the Invention

[0006] The problem that the invention aims to solve

[0007] However, in the antenna module described in Patent Document 1, it is not easy to design a filter circuit with a large size, such as a 1 / 2 wavelength filter.

[0008] Therefore, the purpose of this disclosure is to provide an improved dual-polarized waveform antenna module.

[0009] Technical solutions for solving the problem

[0010] One embodiment of this disclosure provides an antenna module comprising: first and second signal pads; an antenna element; a first filter inserted between the first signal pad and the antenna element; and a second filter inserted between the second signal pad and the antenna element. The first filter includes first to fourth conductor patterns, and the second filter includes fifth to eighth conductor patterns. The first signal pad sequentially couples the first to fourth conductor patterns to the antenna element, and the second signal pad sequentially couples the fifth to eighth conductor patterns to the antenna element. The second and third conductor patterns are arranged in a row extending along the diagonal of the antenna element in a first direction. The sixth and seventh conductor patterns are arranged in a row extending along the diagonal of the antenna element in the first direction and facing the second and third conductor patterns in a second direction orthogonal to the first direction via the diagonal. The first and fourth conductor patterns extend in a second direction relative to the second and third conductor patterns, respectively, and the fifth and eighth conductor patterns extend in a second direction relative to the sixth and seventh conductor patterns, respectively.

[0011] Invention Effects

[0012] According to this disclosure, an improved dual-polarized waveform antenna module can be provided. Attached Figure Description

[0013] Figure 1 This is a general perspective view showing the appearance of the antenna module 1 according to the first embodiment of the present disclosure.

[0014] Figure 2This is a top view showing the general shape of the conductor pattern contained in antenna module 1.

[0015] Figure 3 This is a top view showing the general shape of the conductor pattern contained in antenna module 1.

[0016] Figure 4 This is a top view showing the general shape of the conductor pattern contained in antenna module 1.

[0017] Figure 5 This is a top view showing the general shape of the conductor pattern contained in antenna module 1.

[0018] Figure 6 This is a top view showing the general shape of the conductor pattern contained in antenna module 1.

[0019] Figure 7 This is a top view showing the general shape of the conductor pattern contained in antenna module 1.

[0020] Figure 8 This is a top view showing the general shape of the conductor pattern contained in antenna module 1.

[0021] Figure 9 This is a top view showing the general shape of the conductor pattern contained in antenna module 1.

[0022] Figure 10 This is a general perspective view showing the appearance of the antenna module 2 according to the second embodiment of this disclosure. Detailed Implementation

[0023] Hereinafter, preferred embodiments of the present disclosure will be described in detail with reference to the accompanying drawings.

[0024] Figure 1 This is a general perspective view showing the appearance of the antenna module 1 according to the first embodiment of the present disclosure.

[0025] like Figure 1 As shown, the antenna module 1 of the first embodiment includes: a flat substrate 3 with the xy direction as its planar direction and the z direction as its thickness direction, and multiple conductor patterns including antenna elements 80 embedded in the substrate 3. The substrate 3 has a multilayer structure, and as its material, ceramic materials such as LTCC (Low Temperature Co-fired Ceramics) and resin materials can be used.

[0026] Figures 2 to 9 This is a top view showing the general shape of the conductor pattern contained in antenna module 1.

[0027] Figure 2The conductor pattern shown is the conductor pattern of the bottommost conductor layer. Multiple ground pads 10, first signal pads 11, and second signal pads 12 are provided on the bottommost conductor layer. The first signal pad 11 is, for example, a terminal for transmitting and receiving vertically polarized wave signals, and the second signal pad 12 is, for example, a terminal for transmitting and receiving horizontally polarized wave signals. Solder balls can also be mounted on the multiple ground pads 10, first signal pads 11, and second signal pads 12 respectively. Figure 2 In the example shown, 7×7 pads are arranged in an array along the x and y directions. One of these is the first signal pad 11, another is the second signal pad 12, and the remaining 47 pads are ground pads 10. Some of the ground pads 10 may be omitted. The positions of the first signal pad 11 and the second signal pad 12 are not particularly limited, but it is preferable to use pads that are not located on the outer perimeter. Preferably, the first signal pad 11 and the second signal pad 12 are symmetrically positioned with respect to the diagonal extending in the A direction. Through-hole conductors 10a, 11a, and 12a extending in the z direction are connected to the ground pad 10, the first signal pad 11, and the second signal pad 12, respectively.

[0028] Figure 3 The conductor pattern shown is located in Figure 2 The upper conductor pattern of the illustrated conductor pattern has a ground pattern G1 formed over approximately the entire surface of the xy plane. The ground pattern G1 is connected via... Figure 2 The through-hole conductor 10a shown is connected to multiple grounding pads 10. For example... Figure 3 As shown, openings 11b and 12b are provided on the grounding pattern G1, and through-hole conductors 11a and 12a pass through the openings 11b and 12b respectively to connect to the upper conductor pattern. In addition, the grounding pattern G1 is connected to the upper grounding pattern via multiple through-hole conductors P1.

[0029] Figure 4 The conductor pattern shown is located in Figure 3 The upper conductor pattern of the illustrated conductor pattern has a ground pattern 30, a first 1 / 2 wavelength filter F1, and a second 1 / 2 wavelength filter F2 arranged diagonally extending in the direction A. The ground pattern 30 is connected via... Figure 3 The through-hole conductor P1 shown is connected to the ground pattern G1. The ground pattern 30 is connected to the upper ground pattern via multiple through-hole conductors P2. The first and second 1 / 2 wavelength filters F1 and F2 are bandpass filters with a so-called π-type structure.

[0030] The first half-wavelength filter F1 includes first to fourth resonant patterns 31 to 34. The first to fourth resonant patterns 31 to 34 are examples of the first to fourth conductor patterns. For example... Figure 4As shown, the second and third resonant patterns 32 and 33 are arranged in a row along the grounding pattern 30, that is, along the diagonal towards direction A, which is the first direction. Furthermore, the first and fourth resonant patterns 31 and 34 extend relative to the second and third resonant patterns 32 and 33 towards direction B, which is the second direction. Direction B is the extension direction of another diagonal line and is orthogonal to direction A.

[0031] The first resonant pattern 31 overlaps with a portion of the first wiring 21. The first wiring 21 is connected to the first signal pad 11 via a via conductor 11a. Thus, the first resonant pattern 31 is capacitively coupled to the first signal pad 11 via the first wiring 21. The first resonant pattern 31 and the second resonant pattern 32 are capacitively coupled via coupling pattern 41. Furthermore, the second resonant pattern 32 and the third resonant pattern 33 are capacitively coupled via coupling pattern 42. Additionally, the third resonant pattern 33 and the fourth resonant pattern 34 are capacitively coupled via coupling pattern 43. The fourth resonant pattern 34 overlaps with a portion of the second wiring 22. The second wiring 22 is connected to the upper conductor pattern via a via conductor 51. Coupling patterns 41 to 43 are conductor patterns.

[0032] The first wiring 21 is a conductor pattern extending approximately along direction A. One end of the first wiring 21 is connected to the through-hole conductor 11a, and the other end overlaps with the first resonant pattern 31. Thus, the through-hole conductor 11a is positioned in a different plane from the first resonant pattern 31. That is, the opening 11b of the through-hole conductor 11a is positioned so as not to overlap with the first resonant pattern 31 when viewed from above.

[0033] The second wiring 22 is a conductor pattern extending generally along direction A. The second wiring 22 overlaps with the fourth resonant pattern 34 at one end and connects to the first through-hole conductor 51 at the other end. Thus, the first through-hole conductor 51 is positioned in a different plane than the fourth resonant pattern 34.

[0034] The first to fourth resonant patterns 31 to 34 each constitute a resonator. The first to fourth resonant patterns 31 to 34 are open-ended resonators. The lengths of the second resonant pattern 32 and the third resonant pattern 33 are set to approximately half the wavelength of the passband frequency of the first half-wavelength filter F1. In the first and fourth resonant patterns 31 and 34, the central portion between the two ends in the B direction has a narrower pattern width in the A direction than the two ends in the B direction. In this embodiment, the central portion of the first resonant pattern 31 is positioned offset relative to the two ends towards the fourth resonant pattern 34 in the A direction, and the edges of the two ends and the central portion of the first resonant pattern 31 are aligned in the A direction. Similarly, the central portion of the fourth resonant pattern 34 is positioned offset relative to the two ends towards the first resonant pattern 31 in the A direction, and the edges of the two ends and the central portion of the fourth resonant pattern 34 are aligned in the A direction.

[0035] The second half-wavelength filter F2 has a line-symmetrical structure with respect to the ground pattern 30 and the first half-wavelength filter F1. The second half-wavelength filter F2 includes fifth to eighth resonant patterns 35 to 38 as conductor patterns. The fifth to eighth resonant patterns 35 to 38 are examples of fifth to eighth conductor patterns. Figure 4 As shown, the sixth and seventh resonant patterns 36 and 37 are arranged in a row along the grounding pattern 30, i.e., along the diagonal in the direction A. Here, the sixth resonant pattern 36 is arranged facing the second resonant pattern 32 in the direction B, and the seventh resonant pattern 37 is arranged facing the third resonant pattern 33 in the direction B. In addition, the fifth and eighth resonant patterns 35 and 38 extend in the direction B relative to the sixth and seventh resonant patterns 36 and 37, respectively.

[0036] The fifth resonant pattern 35 overlaps with a portion of the fourth wiring 24. The fourth wiring 24 is connected to the second signal pad 12 via a via conductor 12a. Thus, the fifth resonant pattern 35 is capacitively coupled to the second signal pad 12 via the fourth wiring 24. The fifth resonant pattern 35 and the sixth resonant pattern 36 are capacitively coupled via coupling pattern 44. Furthermore, the sixth resonant pattern 36 and the seventh resonant pattern 37 are capacitively coupled via coupling pattern 45. Additionally, the seventh resonant pattern 37 and the eighth resonant pattern 38 are capacitively coupled via coupling pattern 46. The eighth resonant pattern 38 overlaps with a portion of the fifth wiring 25. The fifth wiring 25 is connected to the upper conductor pattern via a second via conductor 52. Coupling patterns 44-46 are conductor patterns.

[0037] The fourth wiring 24 is a conductor pattern extending approximately along direction A. The fourth wiring 24 is connected at one end to the through-hole conductor 12a and overlaps with the fifth resonant pattern 35 at the other end. Thus, the through-hole conductor 12a is positioned in a different plane from the fifth resonant pattern 35. That is, the opening 12b of the through-hole conductor 12a is positioned so as not to overlap with the fifth resonant pattern 35 when viewed from above.

[0038] The fifth wiring 25 is a conductor pattern extending generally along direction A. The fifth wiring 25 overlaps with the eighth resonant pattern 38 at one end and connects to the second through-hole conductor 52 at the other end. Thus, the second through-hole conductor 52 is positioned in a different plane than the eighth resonant pattern 38.

[0039] The fifth to eighth resonant patterns 35 to 38 each constitute a resonator. The fifth to eighth resonant patterns 35 to 38 are open-ended resonators. The lengths of the sixth resonant pattern 36 and the seventh resonant pattern 37 are set to approximately half the wavelength of the passband frequency of the second half-wavelength filter F2. In the fifth and eighth resonant patterns 35 and 38, the central portion between the two ends in the B direction has a narrower pattern width in the A direction than the two ends in the B direction. In this embodiment, the central portion of the fifth resonant pattern 35 is positioned offset from the two ends towards the eighth resonant pattern 38 in the A direction, and the edges of the two ends and the central portion of the fifth resonant pattern 35 are aligned in the A direction towards the eighth resonant pattern 38. Similarly, the central portion of the eighth resonant pattern 38 is positioned offset from the two ends towards the fifth resonant pattern 35 in the A direction, and the edges of the two ends and the central portion of the eighth resonant pattern 38 are aligned in the A direction towards the fifth resonant pattern 35.

[0040] Here, the overlapping areas of the fourth resonant pattern 34 and the second wiring 22, and the overlapping areas of the eighth resonant pattern 38 and the fifth wiring 25 are larger than the overlapping areas of the first resonant pattern 31 and the first wiring 21, and the overlapping areas of the fifth resonant pattern 35 and the fourth wiring 24. This makes it easier to ensure impedance matching, thus enabling a good bandwidth expansion with reduced return loss.

[0041] Figure 5 The conductor pattern shown is located in Figure 4 The upper conductor pattern of the illustrated conductor pattern has a ground pattern G2 formed over approximately the entire surface of the xy plane. The ground pattern G2 is connected via... Figure 3 and Figure 4 The through-hole conductors P1 and P2 shown are connected to the grounding pattern G1, 30. For example... Figure 5As shown, the grounding pattern G2 has first and second openings 51a and 52a. First and second through-hole conductors 51 and 52 pass through these openings and are connected to one end of the third wiring 23 and the sixth wiring 26 located on the upper layer of the grounding pattern G2, respectively. The first through-hole conductor 51 is connected to the other end of the second wiring 22; therefore, the first opening 51a through which the first through-hole conductor 51 passes is positioned so as not to overlap with the fourth resonant pattern 34 when viewed from above. The second through-hole conductor 52 is connected to the other end of the fifth wiring 25; therefore, the second opening 52a through which the second through-hole conductor 52 passes is positioned so as not to overlap with the eighth resonant pattern 38 when viewed from above. The pattern widths of the third and sixth wirings 23 and 26 are designed to be narrower than the pattern widths of the second and fifth wirings 22 and 25. This facilitates impedance matching, resulting in a good bandwidth expansion with reduced return loss. Furthermore, the grounding pattern G2 is connected to the upper-layer grounding pattern via multiple through-hole conductors P3.

[0042] The third wiring 23 is a conductor pattern extending along the y-direction. The third wiring 23 is connected at one end to the first through-hole conductor 51 and at the other end to the through-hole conductor 53. Thus, the first through-hole conductor 51 and the through-hole conductor 53 are positioned in different planar locations.

[0043] The sixth wiring 26 is a conductor pattern extending along the x-direction. The sixth wiring 26 is connected at one end to the second through-hole conductor 52 and at the other end to the through-hole conductor 54. Thus, the second through-hole conductor 52 and the through-hole conductor 54 are positioned in different planar locations.

[0044] Figure 6 The conductor pattern shown is located in Figure 5 The upper conductor pattern of the illustrated conductor pattern has a ground pattern G3 formed over approximately the entire surface of the xy plane. The ground pattern G3 is connected via... Figure 5 The through-hole conductor P3 shown is connected to the grounding pattern G2. (As shown) Figure 6 As shown, openings 53a and 54a are provided on the grounding pattern G3. Through-hole conductors 53 and 54, respectively connected to the other ends of the third wiring 23 and the sixth wiring 26, pass through openings 53a and 54a. Since through-hole conductor 53 is connected to the other end of the third wiring 23, the opening 53a through which it passes is positioned so as not to overlap with the first opening 51a when viewed from above. Similarly, through-hole conductor 54 is connected to the other end of the sixth wiring 26, and therefore, the opening 54a through which it passes is positioned so as not to overlap with the second opening 52a when viewed from above. Furthermore, the grounding pattern G3 is connected to the upper grounding pattern via multiple through-hole conductors P4.

[0045] Figure 7 The conductor pattern shown is located in Figure 6The upper conductor pattern of the conductor pattern shown has first and second capacitive coupling electrodes 61 and 62. The first and second capacitive coupling electrodes 61 and 62 are respectively connected to the through-hole conductors 53 and 54.

[0046] Figure 8 The conductor pattern shown is located in Figure 7 The upper conductor pattern of the conductor pattern shown has a power supply electrode 70 and a ground pattern 71. The power supply electrode 70 is cross-shaped, with one end in the y-direction overlapping with the first capacitive coupling electrode 61, and one end in the x-direction overlapping with the second capacitive coupling electrode 62. Thus, the power supply electrode 70 is capacitively coupled to the first and second capacitive coupling electrodes 61 and 62. The ground pattern 71 is a rectangular ring arranged along its outer periphery, via... Figure 6 and Figure 7 The through-hole conductor P4 shown is connected to the grounding pattern G3. In addition, the grounding pattern 71 is connected to the upper grounding pattern via multiple through-hole conductors P5.

[0047] Figure 9 The conductor pattern shown is located in Figure 8 The upper conductor pattern of the shown conductor pattern has an antenna element 80 and a ground pattern 81. The antenna element 80 is a generally rectangular patch conductor that overlaps with the power supply electrode 70. Thus, the antenna element 80 and the power supply electrode 70 are capacitively coupled. The ground pattern 81 is a rectangular ring arranged along its outer periphery, via... Figure 8 The through-hole conductor P5 shown is connected to the grounding pattern 71.

[0048] With the above structure, a first 1 / 2 wavelength filter F1 is inserted between the first signal pad 11 and the antenna element 80, and a second 1 / 2 wavelength filter F2 is inserted between the second signal pad 12 and the antenna element 80. Furthermore, the first signal pad 11 sequentially couples the via conductor 11a, the first wiring 21, the first to fourth resonant patterns 31 to 34, the second wiring 22, the first via conductor 51, the third wiring 23, the via conductor 53, the first capacitive coupling electrode 61, and the power supply electrode 70 to the antenna element 80. Similarly, the second signal pad 12 sequentially couples the via conductor 12a, the fourth wiring 24, the fifth to eighth resonant patterns 35 to 38, the fifth wiring 25, the second via conductor 52, the sixth wiring 26, the via conductor 54, the second capacitive coupling electrode 62, and the power supply electrode 70 to the antenna element 80. It is not necessary for the first and second capacitive coupling electrodes 61 and 62 to be coupled to the antenna element 80 via the power supply electrode 70. The power supply electrode 70 can also be omitted, and the first and second capacitive coupling electrodes 61 and 62 can directly supply power to the antenna element 80.

[0049] Therefore, the vertically polarized wave signal supplied to the first signal pad 11 and the horizontally polarized wave signal supplied to the second signal pad 12 are respectively powered to the antenna element 80 via the first and second half-wavelength filters F1 and F2, thus enabling dual-polarized waves. Furthermore, the first half-wavelength filter F1 and the second half-wavelength filter F2 are configured symmetrically, and a grounding pattern 30 is provided between them. Therefore, the filter characteristics of the vertically polarized wave signal and the horizontally polarized wave signal are approximately the same, and the isolation between them is improved. Additionally, the second, third, sixth, and seventh resonant patterns 32, 33, 36, and 37, which are large in size along the long side, are arranged in a manner extending along the diagonal of the antenna element 80 in the A direction. Therefore, even when the first and second half-wavelength filters F1 and F2 are large, they can be accommodated within a limited planar size. Moreover, the second and third resonant patterns 32 and 33 are arranged linearly, and the sixth and seventh resonant patterns 36 and 37 are arranged linearly, thus improving the filtering characteristics compared to when they are bent.

[0050] Furthermore, instead of directly connecting the fourth and eighth resonant patterns 34 and 38 to the first and second capacitive coupling electrodes 61 and 62 respectively, the fourth resonant pattern 34 is connected to the first capacitive coupling electrode 61 via the second wiring 22, the first through-hole conductor 51, the third wiring 23, and the through-hole conductor 53. The eighth resonant pattern 38 is connected to the second capacitive coupling electrode 62 via the fifth wiring 25, the second through-hole conductor 52, the sixth wiring 26, and the through-hole conductor 54. This simplifies the design of the first and second half-wavelength filters F1 and F2. Moreover, the first opening 51a through which the first through-hole conductor 51 passes is positioned so as not to overlap with the fourth resonant pattern 34 and the first capacitive coupling electrode 61 when viewed from above, and the second opening 52a through which the second through-hole conductor 52 passes is positioned so as not to overlap with the eighth resonant pattern 38 and the second capacitive coupling electrode 62 when viewed from above. Therefore, unwanted coupling is less likely to occur in the fourth and eighth resonant patterns 34 and 38 and the first and second capacitive coupling electrodes 61 and 62. Therefore, unwanted coupling between the antenna and the filter in antenna module 1 can be suppressed.

[0051] Furthermore, the first, fourth, fifth, and eighth resonant patterns 31, 34, 35, and 38 have a tapering shape in the middle, where the pattern width in the A direction is narrower than that at the two ends in the B direction. The central portion of the resonant pattern is where the current distribution of the standing wave is dense. By selectively narrowing the pattern width of this portion without changing the length of the first, fourth, fifth, and eighth resonant patterns 31, 34, 35, and 38 in the B direction, the resonant frequency can be reduced. Additionally, the first and fourth wirings 21 and 24 are coupled to one end of the first and fifth resonant patterns 31 and 35, and the second and fifth wirings 22 and 25 are coupled to one end of the fourth and eighth resonant patterns 31 and 35. The two ends of the resonant pattern are where the current distribution is sparse and the electric field distribution is dense; therefore, by capacitive coupling in this portion, stable electric field coupling can be obtained.

[0052] Figure 10 This is a general perspective view showing the appearance of the antenna module 2 according to the second embodiment of this disclosure.

[0053] like Figure 10 As shown, the antenna module 2 of the second embodiment has a structure in which four elements having a structure substantially the same as the conductor pattern contained in the antenna module 1 are arranged in an array in the x and y directions. It is not necessary for the four elements contained in the antenna module 2 to have the exact same structure as those in the antenna module 1; some may be different. Thus, by arranging multiple elements having a structure substantially the same as those in the antenna module 1 in an array, the radiation direction of the beam can be controlled by phase control.

[0054] The above describes preferred embodiments of this disclosure, but this disclosure is not limited to the above embodiments. Various changes can be made without departing from the spirit of this disclosure, and of course, they are also included within the scope of this disclosure.

[0055] The technology disclosed herein includes the following structural examples, but is not limited thereto.

[0056] The antenna module disclosed herein includes: first and second signal pads, an antenna element, a first filter inserted between the first signal pad and the antenna element, and a second filter inserted between the second signal pad and the antenna element. The first filter includes first to fourth conductor patterns, and the second filter includes fifth to eighth conductor patterns. The first signal pad sequentially couples the first to fourth conductor patterns to the antenna element, and the second signal pad sequentially couples the fifth to eighth conductor patterns to the antenna element. The second and third conductor patterns are arranged in a row extending diagonally along the antenna element in a first direction. The sixth and seventh conductor patterns are arranged in a row extending diagonally along the antenna element in the first direction and facing the second and third conductor patterns in a second direction orthogonal to the first direction. The first and fourth conductor patterns extend in a second direction relative to the second and third conductor patterns, respectively, and the fifth and eighth conductor patterns extend in a second direction relative to the sixth and seventh conductor patterns, respectively. Accordingly, the dual-polarized waveform antenna module can be miniaturized.

[0057] The antenna module disclosed herein may further include: a first wiring connected to a first signal pad and coupled to a first conductor pattern; a second wiring coupled to a fourth conductor pattern; a third wiring connected to the second wiring via a first via conductor and supplying power to the antenna element; a fourth wiring connected to the second signal pad and coupled to a fifth conductor pattern; a fifth wiring coupled to an eighth conductor pattern; and a sixth wiring connected to the fifth wiring via a second via conductor and supplying power to the antenna element. Accordingly, the design of the first and second filters becomes easier.

[0058] The antenna module disclosed herein may further include: a first grounding pattern having first and second openings through which first and second through-hole conductors respectively pass; a second grounding pattern having a third opening through which a third through-hole conductor connected to a third wiring passes and a fourth opening through which a fourth through-hole conductor connected to a sixth wiring passes, wherein the first opening is positioned so as not to overlap with the fourth conductor pattern and the third opening when viewed from above, and the second opening is positioned so as not to overlap with the eighth conductor pattern and the fourth opening when viewed from above. Accordingly, unwanted resonance is less likely to occur in the fourth and eighth conductor patterns and the first and second capacitive coupling electrodes.

[0059] The pattern width of the first, fourth, fifth, and eighth conductor patterns in the first direction can also have a shape where the central portion between the two ends in the second direction is thinner than the two ends in the second direction. Accordingly, without changing the length of the first, fourth, fifth, and eighth conductor patterns in the second direction, the resonant frequency can be reduced. In this case, the first wiring can be coupled to one end of the first conductor pattern, and the fourth wiring can be coupled to one end of the fifth conductor pattern; alternatively, the second wiring can be coupled to one end of the fourth conductor pattern, and the fifth wiring can be coupled to one end of the eighth conductor pattern. This allows for stable electric field coupling.

[0060] The pattern widths of the third and sixth wirings can also be thinner than those of the second and fifth wirings. This allows for a bandwidth expansion with good return loss.

[0061] The overlapping areas of the fourth conductor pattern with the second wiring and the eighth conductor pattern with the fifth wiring can also be larger than the overlapping areas of the first conductor pattern with the first wiring and the fifth conductor pattern with the fourth wiring. Therefore, a good bandwidth expansion with reduced return loss can be achieved.

[0062] Explanation of reference numerals in the attached figures

[0063] 1 and 2 antenna modules

[0064] 3 body

[0065] 10 Grounding pads

[0066] 11 First signal pad

[0067] 12 Second signal pad

[0068] 10a, 11a, 12a Through-hole conductors

[0069] 11b, 12b openings

[0070] 21 First wiring

[0071] 22 Second wiring

[0072] 23 Third wiring

[0073] 24 Fourth wiring

[0074] 25 Fifth wiring

[0075] 26. Sixth wiring

[0076] 30 Grounding pattern

[0077] 31 First Resonance Pattern

[0078] 32 Second Resonance Pattern

[0079] 33 Third Resonance Pattern

[0080] 34 Fourth Resonance Pattern

[0081] 35. Fifth Resonance Pattern

[0082] 36. The Sixth Resonance Pattern

[0083] 37. Seventh Resonance Pattern

[0084] 38. Eighth Resonance Pattern

[0085] Coupled patterns 41-46

[0086] 51 First through-hole conductor

[0087] 52 Second Through Hole Conductor

[0088] 53, 54 Through-hole conductors

[0089] 53a, 54a openings

[0090] 61 First capacitive coupling electrode

[0091] 62 Second capacitor coupling electrode

[0092] 70 Power supply electrode

[0093] 71 Grounding Pattern

[0094] 80 antenna elements

[0095] 81 Grounding Pattern

[0096] F1 First 1 / 2 Wavelength Filter

[0097] F2 Second 1 / 2 Wavelength Filter

[0098] G1~G3 Grounding Patterns

[0099] P1~P5 Through-hole conductors.

Claims

1. An antenna module comprising: First and second signal pads; Antenna elements; A first filter is inserted between the first signal pad and the antenna element; and A second filter is inserted between the second signal pad and the antenna element. The first filter comprises first to fourth conductor patterns. The second filter comprises fifth to eighth conductor patterns. The first signal pad sequentially couples the first to fourth conductor patterns to the antenna element. The second signal pad sequentially couples the fifth to eighth conductor patterns to the antenna element. The second and third conductor patterns are arranged in a row extending diagonally along the antenna element in a first direction. The sixth and seventh conductor patterns extend along the diagonal of the antenna element in the first direction and are arranged in a row facing the second and third conductor patterns in a second direction orthogonal to the first direction via the diagonal. The first and fourth conductor patterns extend in the second direction relative to the second and third conductor patterns, respectively. The fifth and eighth conductor patterns extend in the second direction relative to the sixth and seventh conductor patterns, respectively.

2. The antenna module according to claim 1, wherein, It also has: The first wiring is connected to the first signal pad and coupled to the first conductor pattern; The second wiring is coupled to the fourth conductor pattern; The third wiring, which is connected to the second wiring via the first through-hole conductor, supplies power to the antenna element; The fourth wiring is connected to the second signal pad and coupled to the fifth conductor pattern; The fifth wiring is coupled to the eighth conductor pattern; and The sixth wiring, which is connected to the fifth wiring via the second through-hole conductor, supplies power to the antenna element.

3. The antenna module according to claim 2, wherein, It also has: The first grounding pattern has a first and a second opening through which the first and second through-hole conductors respectively pass; The second grounding pattern has a third opening through which a third through-hole conductor connected to the third wiring passes and a fourth opening through which a fourth through-hole conductor connected to the sixth wiring passes. The first opening is positioned so as not to overlap with the fourth conductor pattern and the third opening when viewed from above. The second opening is positioned so as not to overlap with the eighth conductor pattern and the fourth opening when viewed from above.

4. The antenna module according to claim 2 or 3, wherein, The pattern width of the first, fourth, fifth, and eighth conductor patterns in the first direction has a shape in which the central portion between the two ends in the second direction is thinner than the two ends.

5. The antenna module according to claim 4, wherein, The first wiring is coupled to one of the two ends of the first conductor pattern. The fourth wiring is coupled to one of the two ends of the fifth conductor pattern.

6. The antenna module according to claim 4 or 5, wherein, The second wiring is coupled to one of the two ends of the fourth conductor pattern. The fifth wiring is coupled to one of the two ends of the eighth conductor pattern.

7. The antenna module according to any one of claims 2 to 6, wherein, The pattern widths of the third and sixth wirings are thinner than those of the second and fifth wirings.

8. The antenna module according to any one of claims 2 to 7, wherein, The area of ​​overlap between the fourth conductor pattern and the second wiring and the area of ​​overlap between the eighth conductor pattern and the fifth wiring are larger than the area of ​​overlap between the first conductor pattern and the first wiring and the area of ​​overlap between the fifth conductor pattern and the fourth wiring.

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