CN110994085A - Microwave device cavity, microwave device and antenna - Google Patents
Microwave device cavity, microwave device and antenna Download PDFInfo
- Publication number
- CN110994085A CN110994085A CN201911401953.8A CN201911401953A CN110994085A CN 110994085 A CN110994085 A CN 110994085A CN 201911401953 A CN201911401953 A CN 201911401953A CN 110994085 A CN110994085 A CN 110994085A
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- China
- Prior art keywords
- circuit board
- microwave device
- clamping groove
- cavity
- groove
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/18—Phase-shifters
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/20—Frequency-selective devices, e.g. filters
- H01P1/213—Frequency-selective devices, e.g. filters combining or separating two or more different frequencies
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
- H01Q3/26—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture
- H01Q3/30—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture varying the relative phase between the radiating elements of an array
- H01Q3/34—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture varying the relative phase between the radiating elements of an array by electrical means
Abstract
The invention provides a microwave device cavity, a microwave device and an antenna, wherein the microwave device cavity is suitable for mounting a circuit board with a microwave circuit and comprises an inner cavity, a first clamping groove and a second clamping groove which face to each other and can be used for the circuit board to be inserted are formed in two opposite side walls of the inner cavity, and the first clamping groove is higher than the second clamping groove so that the lower plane of the first clamping groove forms a support for the back side of a bonding pad of the circuit board. Through set up on the inner chamber lateral wall and supply first draw-in groove and second draw-in groove, can supply the circuit board to insert and arrange in the inner chamber, to the circuit board that the thickness is thinner, the height of first draw-in groove and second draw-in groove is greater than the thickness of circuit board, utilizes first draw-in groove and second draw-in groove dislocation set from top to bottom, and the lower part plane of first draw-in groove contacts with the circuit board, forms the support to the pad dorsal part of circuit board to stability when the welding cable of circuit board in the microwave device has been improved.
Description
Technical Field
The invention relates to the technical field of mobile communication, in particular to a microwave device cavity, a microwave device and an antenna.
Background
At present, the cost pressure of base station antennas is increasing, but the requirement for product stability is also increasing, and it is a mainstream development trend to provide an antenna with low cost and high stability. The reduction of the total cost of the antenna product by reducing the thickness of the circuit board in the phase shifter is one of the more common solutions, and the thickness of the circuit board can be reduced to 0.2 mm. But because the cavity generally adopts pultrusion's production methods, the unable shaping of cavity goes out the circuit board draw-in groove of 0.2mm thickness, when the circuit board card goes into the circuit board draw-in groove, because the mismatch nature of the thickness of circuit board and draw-in groove, there is great clearance circuit board and draw-in groove inner wall, and general circuit board need be placed in the middle in the draw-in groove, consequently when welding the cable on the circuit board, the circuit board takes place to rock easily, be unfavorable for the welding, and because the circuit board is thinner, appear the phenomenon that is crushed easily at the welding position.
Disclosure of Invention
The invention aims to provide a microwave device cavity capable of improving the stability in the process of welding cables;
another object of the present invention is to provide a microwave device using the above microwave device cavity;
another object of the present invention is to provide an antenna using the above microwave device.
In order to achieve the purpose, the invention provides the following technical scheme:
a microwave device cavity is suitable for mounting a circuit board with a microwave circuit and comprises an inner cavity, wherein a first clamping groove and a second clamping groove which face opposite directions and can be used for the circuit board to be inserted are formed in two opposite side walls of the inner cavity, and the first clamping groove is higher than the second clamping groove so that the lower plane of the first clamping groove forms a support for the back side of a bonding pad of the circuit board.
Further setting: the lower part of the first card slot extends towards the direction of the second card slot and is provided with a supporting part which can be supported on the back side of a bonding pad of the circuit board.
Further setting: and a threading hole for a cable to pass through and be welded with the circuit board is formed in one side wall of the inner cavity, which is close to the first clamping groove.
Further setting: the top surface of the supporting part is higher than the bottom surface of the threading hole, so that a stopping step for stopping the cable is formed on the supporting part.
Further setting: and an operating hole for a welding tool to extend into the operating hole for welding the cable on the circuit board is formed in the top wall of the inner cavity and opposite to the supporting part.
The invention provides a microwave device, which comprises the microwave device cavity and a circuit board, wherein two sides of the circuit board are respectively inserted into a first clamping groove and a second clamping groove, and one side of the circuit board is abutted against the lower plane of the first clamping groove.
Further setting: the microwave device also comprises a dielectric plate arranged in the inner cavity, the circuit board is provided with a phase-shift circuit network, and the two sides of the circuit board of the dielectric plate are respectively provided with one piece and support the circuit board.
Further setting: one end of the circuit board close to the second clamping groove is arranged in the second clamping groove in the middle along the height direction of the second clamping groove.
Further setting: the dielectric plate is abutted against the side wall of the inner cavity, which is provided with a second clamping groove.
The invention also provides an antenna comprising the microwave device.
Compared with the prior art, the scheme of the invention has the following advantages:
1. in the microwave device cavity, the first clamping groove and the second clamping groove are formed in the side wall of the inner cavity, a circuit board can be inserted into the inner cavity, for the circuit board with the thinner thickness, the height of the first clamping groove and the height of the second clamping groove are larger than the thickness of the circuit board, the first clamping groove and the second clamping groove are arranged in a vertically staggered mode, the lower plane of the first clamping groove is in contact with the circuit board, and the back side of a bonding pad of the circuit board is supported, so that the stability of the circuit board when a cable is welded in the microwave device is improved.
2. In the microwave device, the microwave device cavity structure is suitable for mounting a circuit board with a thin thickness, so that the overall cost of the microwave device is reduced, and the stability of the circuit board in the process of welding a cable can be ensured. In addition, the two dielectric plates are respectively arranged on the front side and the back side of the circuit board to support one side of the circuit board, which is far away from the welding disc, and the circuit board can be centered in the second clamping groove, so that when the microwave device is turned over, the gap between the circuit board and the second clamping groove can be kept consistent, and the stability of the circuit board in the using process is fully improved.
3. In the antenna related by the invention, by adopting the microwave device and the circuit board with a thinner thickness, the overall cost of the antenna is greatly reduced, the stability of the circuit board in the process of welding a cable can be ensured by utilizing the inner cavity structure, and the stability of the overall electrical performance of the antenna is improved.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
The foregoing and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic diagram of a microwave device according to an embodiment of the present invention;
FIG. 2 is a front view of one embodiment of a microwave device of the present invention;
FIG. 3 is a cross-sectional view of one embodiment of a microwave device of the present invention;
fig. 4 is a top view of an embodiment of the microwave device of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative only and should not be construed as limiting the invention.
As shown in fig. 1 and fig. 2, the present invention provides an antenna, which includes a microwave device 1, in this embodiment, the microwave device 1 is a phase shifter, and in other embodiments, the microwave device 1 may also be a combiner or other devices. The microwave device 1 comprises a cavity of the microwave device 1 and a circuit board 12 arranged in the cavity of the microwave device 1.
The cavity of the microwave device 1 includes an inner cavity 111, in this embodiment, the cavity of the microwave device 1 includes two inner cavities 111 stacked up and down, and the two inner cavities 111 are arranged up and down symmetrically. In other embodiments, only one inner cavity 111 may be provided in the cavity of the microwave device 1.
In the present embodiment, the structure of the inner cavity 111 is described in a state of being located above. Two opposite side walls of the inner cavity 111 are provided with a first card slot 1111 and a second card slot 1112 which face opposite and can be inserted by the circuit board 12, and the first card slot 1111 is higher than the second card slot 1112 so that the lower plane of the first card slot 1111 forms a support for the back side of the pad of the circuit board 12.
The first card slot 1111 and the second card slot 1112 are disposed on the side wall of the inner cavity 111, so that the circuit board 12 can be inserted into the inner cavity 111. For a circuit board 12 with a small thickness, such as a circuit board 12 with a thickness of only 0.2mm, since the cavity of the existing microwave device 1 is formed by a pultrusion process, it is difficult to form a card slot with a small height matching with the circuit board 12, and therefore the heights of the first card slot 1111 and the second card slot 1112 are greater than the thickness of the circuit board 12. Utilize first draw-in groove 1111 and second draw-in groove 1112 dislocation set from top to bottom, the one side that is equipped with the pad on circuit board 12 is installed in first draw-in groove 1111 and is touched with the lower part plane of first draw-in groove 1111, and first draw-in groove 1111 forms the support to the pad dorsal part of circuit board 12, prevents that circuit board 12 from taking place the vertical rocking at welding in-process to the stability of circuit board 12 when welding cable 2 in microwave device 1 has been improved.
Further, a support portion 1113 capable of supporting the backside of the pad of the circuit board 12 is extended from the lower portion of the first card slot 1111 toward the second card slot 1112. Specifically, the top surface of the supporting portion 1113 is planar, and the bottom thereof extends obliquely toward the sidewall of the inner cavity 111 where the first locking groove 1111 is disposed. By providing the support part 1113, the support area with the circuit board 12 is increased, that is, the area supported below the pad of the circuit board 12 is increased, and the stability in the soldering process is further improved.
Referring to fig. 3 and 4, in the present embodiment, a threading hole 1114 through which the cable 2 can be threaded and soldered to the circuit board 12 is formed on a side wall of the inner cavity 111 near the first slot 1111. Preferably, the outer side wall of the inner cavity 111 is further provided with a mounting groove 1115 along the length direction thereof, into which the cable 2 can be inserted, and the threading hole 1114 is disposed in the mounting groove 1115.
Through set up through wires hole 1114 on the inner chamber 111 lateral wall, make cable 2 can directly penetrate to weld with circuit board 12 in the inner chamber 111 through wires hole 1114, and cable 2 then installs in the mounting groove 1115 of inner chamber 111 outer wall, has saved the volume in the inner chamber 111, makes laying of cable 2 simpler.
Furthermore, an operation hole 1116 for a welding tool to extend into for welding the cable 2 to the circuit board 12 is formed on the top wall of the inner cavity 111 opposite to the support portion 1113. Through seting up operation hole 1116 at inner chamber 111 top wall, accessible operation hole 1116 stretches into inner chamber 111 welding tool, when welding cable 2 on circuit board 12, operates convenient and fast more.
Further, the top surface of the supporting portion 1113 is higher than the bottom surface of the threading hole 1114 so as to form a stopping step 1117 for stopping the cable 2 on the supporting portion 1113, in other embodiments, the top surface of the supporting portion 1113 may be flush with the bottom surface of the threading hole 1114.
By forming the stopping step 1117 on the supporting portion 1113, the stopping step 1117 can provide a stopping function for the outer structure of the end portion of the cable 2 after the cable 2 is inserted into the threading hole 1114, so that only the inner core of the cable 2 is inserted into the inner cavity 111 to be soldered to the pad on the circuit board 12. On the first hand, the stopping step 1117 provides a limiting effect for the cable 2, and in the welding process of the cable 2 and the circuit board 12, the cable 2 can be tightly abutted to the stopping step 1117, so that the cable 2 is not easy to move, the stability of the cable 2 in the welding process is improved, and the welding quality is improved. In the second aspect, the stopping step 1117 increases the contact area between the inner cavity 111 and the cable 2, and also increases the connection strength between the cable 2 and the cavity of the microwave device 1. In a third aspect, because the thickness of the circuit board 12 is relatively thin and the strength of the circuit board 12 is relatively low, the stopping step 1117 stops the outer layer structure of the cable 2, so that the outer layer structure of the cable 2 is prevented from being in direct contact with the circuit board 12, and the circuit board 12 can be prevented from being damaged due to the fact that the cable 2 extrudes the circuit board 12 in the using process of the microwave device 1.
In this embodiment, the microwave device 1 further includes a dielectric plate 13 installed in the inner cavity 111, the circuit board 12 is provided with a phase shift circuit network, and the dielectric plate 13 is configured to change a phase of a current flowing through the phase shift circuit network when the dielectric plate moves relative to the circuit board 12. In this embodiment, the dielectric plate 13 is provided with one piece on each of two sides of the circuit board 12 and supports the circuit board 12, specifically, the two dielectric plates 13 are separately provided on two sides of the circuit board 12 and abut against the top wall and the bottom wall of the inner cavity 111 respectively, and preferably, the dielectric plate 13 abuts against the side wall of the inner cavity 111 in which the second locking groove 1112 is opened.
When the circuit board 12 is installed, the circuit board 12 is inserted into the inner cavity 111 along the first card slot 1111 and the second card slot 1112, and then the two dielectric plates 13 are respectively installed on the upper side and the lower side of the circuit board 12, the two dielectric plates 13 abut against the side wall of the inner cavity 111 where the second card slot 1112 is installed, one side of the circuit board 12 installed in the second card slot 1112 is supported, the other side of the circuit board 12 is installed in the first card slot 1111 and is supported by the supporting portion 1113. Because cable 2 only stretches into from the lateral wall that inner chamber 111 is close to first draw-in groove 1111 and welds, consequently only set up supporting part 1113 in first draw-in groove 1111 one side to under the combined action of two dielectric-slab 13, can provide better supporting role to cable 2's welding.
Further, an end of the circuit board 12 close to the second card slot 1112 is disposed centrally in the second card slot 1112 along a height direction of the second card slot 1112. The two dielectric plates 13 are utilized to support the circuit board 12, so that the circuit board 12 is centered in the second card slot 1112, and when the microwave device 1 is turned over, the gap between the circuit board 12 and the second card slot 1112 can be kept consistent, and the stability of the circuit board 12 in the using process is fully improved.
In the present embodiment, the thickness of the circuit board 12 may be 0.1-0.3mm, and preferably, the thickness of the circuit board 12 is 0.2 mm. The circuit board 12 with the thickness of 0.2mm is adopted, so that the cost of the circuit board 12 can be reduced under the condition that certain structural strength is ensured, and the overall cost of the antenna is reduced.
In the present embodiment, the cavity of the microwave device 1 is formed by pultrusion. By adopting the pultrusion process, the forming efficiency is high, the production cost is low, and the integral structural strength of the cavity of the microwave device 1 is higher.
In summary, the scheme of the invention has the following advantages:
1. in the cavity of the microwave device 1, the first card slot 1111 and the second card slot 1112 which are staggered up and down are arranged in the inner cavity 111, and the first card slot 1111 can be supported below the bonding pad of the circuit board 12, so that the stability of the cable 2 and the circuit board 12 in the welding process is improved.
2. In the cavity of the microwave device 1, the stopping step 1117 is arranged to provide a stopping and limiting effect on the cable 2, so that the contact between the outer layer structure of the cable 2 and the circuit board 12 is avoided, and the circuit board 12 is prevented from being damaged due to the extrusion of the cable 2 on the circuit board 12.
3. In the microwave device 1, the cavity structure of the microwave device 1 is adopted, so that the microwave device 1 can be suitable for mounting the circuit board 12 with a thinner thickness, the overall cost of the microwave device 1 is reduced, and meanwhile, the stability of the welding process of the cable 2 and the circuit board 12 can be ensured.
4. In the antenna related to the invention, by adopting the microwave device 1 and the circuit board 12 with a thinner thickness, the overall cost of the antenna is greatly reduced, the stability of the circuit board 12 in the process of welding the cable 2 can be ensured by utilizing the structure of the inner cavity 111, and the stability of the overall electrical performance of the antenna is improved.
The foregoing is only a partial embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. A microwave device cavity is suitable for installing a circuit board with a microwave circuit, and is characterized in that: the circuit board clamping device comprises an inner cavity, wherein a first clamping groove and a second clamping groove which face to each other and can be used for being plugged by a circuit board are formed in two opposite side walls of the inner cavity, and the first clamping groove is higher than the second clamping groove so that a lower plane of the first clamping groove forms a support for the back side of a welding disc of the circuit board.
2. The microwave device cavity of claim 1, further comprising: the lower part of the first card slot extends towards the direction of the second card slot and is provided with a supporting part which can be supported on the back side of a bonding pad of the circuit board.
3. The microwave device cavity of claim 2, further comprising: and a threading hole for a cable to pass through and be welded with the circuit board is formed in one side wall of the inner cavity, which is close to the first clamping groove.
4. The microwave device cavity of claim 3, wherein: the top surface of the supporting part is higher than the bottom surface of the threading hole, so that a stopping step for stopping the cable is formed on the supporting part.
5. The microwave device cavity of claim 3, wherein: and an operating hole for a welding tool to extend into the operating hole for welding the cable on the circuit board is formed in the top wall of the inner cavity and opposite to the supporting part.
6. A microwave device, characterized by: the microwave device cavity comprises the microwave device cavity body as claimed in any one of claims 1 to 5, and further comprises a circuit board, wherein two sides of the circuit board are respectively inserted into the first clamping groove and the second clamping groove, and one side of the circuit board abuts against the lower plane of the first clamping groove.
7. The microwave device of claim 6, characterized by: the circuit board is provided with a phase-shift circuit network, and the two sides of the circuit board of the dielectric plate are respectively provided with a block which supports the circuit board.
8. The microwave device of claim 7, characterized by: one end of the circuit board close to the second clamping groove is arranged in the second clamping groove in the middle along the height direction of the second clamping groove.
9. The microwave device of claim 7, characterized by: the dielectric plate is abutted against the side wall of the inner cavity, which is provided with a second clamping groove.
10. An antenna, characterized by: comprising the microwave device according to any one of the claims 6 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911401953.8A CN110994085A (en) | 2019-12-30 | 2019-12-30 | Microwave device cavity, microwave device and antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911401953.8A CN110994085A (en) | 2019-12-30 | 2019-12-30 | Microwave device cavity, microwave device and antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110994085A true CN110994085A (en) | 2020-04-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911401953.8A Pending CN110994085A (en) | 2019-12-30 | 2019-12-30 | Microwave device cavity, microwave device and antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110994085A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113270703A (en) * | 2021-04-01 | 2021-08-17 | 武汉虹信科技发展有限责任公司 | Dual-polarization multi-input multi-output metal plate combiner and base station antenna |
-
2019
- 2019-12-30 CN CN201911401953.8A patent/CN110994085A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113270703A (en) * | 2021-04-01 | 2021-08-17 | 武汉虹信科技发展有限责任公司 | Dual-polarization multi-input multi-output metal plate combiner and base station antenna |
| CN113270703B (en) * | 2021-04-01 | 2022-01-11 | 武汉虹信科技发展有限责任公司 | Dual-polarization multi-input multi-output metal plate combiner and base station antenna |
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