CN203039057U - Cavity filter and signal transceiver device - Google Patents
Cavity filter and signal transceiver device Download PDFInfo
- Publication number
- CN203039057U CN203039057U CN201220710710XU CN201220710710U CN203039057U CN 203039057 U CN203039057 U CN 203039057U CN 201220710710X U CN201220710710X U CN 201220710710XU CN 201220710710 U CN201220710710 U CN 201220710710U CN 203039057 U CN203039057 U CN 203039057U
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- inner wire
- cavity
- circuit board
- signal
- body filter
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Abstract
The utility model discloses a cavity filter, which comprises a cavity, a cover plate and a connector inner conductor arranged inside the cavity. The connector inner conductor passes through the cover plate and is connected with an external circuit board. The connector inner conductor contains a first inner conductor and a second inner conductor. The first inner conductor is connected with a signal transmission point on the external circuit board. The second inner conductor is connected with an internal signal transmission point inside the cavity. The first and second inner conductors are in clearance fit to form structural capacitance. The internal signal transmission point is connected with the signal transmission point on the external circuit board through the structural capacitance. According to the cavity filter and the signal transceiver device provided by the utility model, an improved scheme is brought forward in allusion to the connection mode of the circuit board and the connector inner conductor, relative position error between the connector inner conductor and the signal transmission point of the circuit board can be eliminated, and good contact between the connector inner conductor and the signal transmission point of the external circuit board of the cavity filter can be guaranteed.
Description
Technical field
The utility model embodiment relates to communication technical field, and particularly the connected mode of connector inner wire and the external circuit board in the cavity body filter also relates to a kind of signal receiving/transmission device.
Background technology
Cavity body filter is widely used in the communications field as a kind of frequency selection device because the specific (special) requirements that cavity body filter transmits signal, between its each assembly and and joint outer part between interconnective precision have relatively high expectations.
See also Fig. 1, Fig. 1 has shown a kind of schematic partial cross-sectional view of cavity body filter in the prior art, has wherein also shown the external circuit board that part is connected with cavity body filter.
As shown in Figure 1, this cavity body filter comprises cavity 100, cover plate 110, connector outer conductor 120 and connector inner wire 130.
In research and practice process to prior art; inventor of the present utility model finds; in the above-mentioned prior art: inner wire 130 and circuit board 150 are owing to make and directional error; when the height of inner wire 130 is lower than assembling base plane; usually can there be gap h; inner wire produces distortion with making circuit board after circuit board is connected; and when the height of inner wire 130 is higher than assembling base plane; then circuit board 150 jack-up can may be made equally circuit board produce distortion, can not guarantee good contact the between the signal transfer point of connector inner wire 130 and cavity body filter the external circuit board 150.
The utility model content
In order to solve the defective that causes the circuit board distortion when inner wire is connected with circuit board in the prior art, the utility model provides a kind of cavity body filter and signal receiving/transmission device, can well solve problems of the prior art.
The utility model provides a kind of cavity body filter, comprise cavity, cover plate and be located at connector inner wire in the described cavity, described connector inner wire passes described cover plate and is connected with the external circuit board, described connector inner wire comprises first inner wire and second inner wire, described first inner wire is connected with transmission point signal on described the external circuit board, internal signal transmission point in described second inner wire and the cavity is connected, described first inner wire and the described second inner wire matched in clearance form structure capacitive, and described internal signal transmission point passes through described structure capacitive and is connected with transmission point signal on described the external circuit board.
Described second inner wire is provided with cavity, and described first inner wire inserts in the cavity of second inner wire or described first inner wire is provided with cavity, and described second inner wire inserts in the cavity of first inner wire.
Described second inner wire is connected on the cavity or is connected on the resonant rod.
Described second inner wire and cavity are one-body molded.
Be provided with dielectric in the gap between described first inner wire and described second inner wire, described first inner wire, second inner wire and described dielectric form structure capacitive.
Described first inner wire is connected by riveted joint, crimping, socket, welding or threaded connection mode with described the external circuit board.
Also be provided with the radio frequency low-noise amplifier that is connected with transmission point signal on described the external circuit board.
Also be provided with the radio-frequency power amplifier that is connected with transmission point signal and the circulator that is connected with described radio-frequency power amplifier with described radio frequency low-noise amplifier respectively on described the external circuit board.
The utility model provides a kind of signal receiving/transmission device, comprises above-mentioned cavity body filter, is connected with reception antenna, and carries out filtering to received signal; Radio frequency low-noise amplifier is connected with the signal output part of described cavity body filter; Circulator is connected with the signal output part of described low noise amplifier; Mixer is connected with described circulator; Radio-frequency power amplifier, input is connected with the signal output part of described mixer, and output is connected with described cavity body filter; Transmitting antenna receives the output signal of described cavity body filter and signal is launched.
The cavity body filter pin that the utility model embodiment provides and signal receiving/transmission device have proposed improvement project to the connected mode of circuit board and connector inner wire, can eliminate the relative position error between the signal transfer point of connector inner wire and circuit board, can guarantee well to contact between the signal transfer point of connector inner wire and cavity body filter the external circuit board.The utility model is divided into connector first inner wire and second inner wire with the connector inner wire, form structure capacitive by the gap between first inner wire and second inner wire, improved the connection reliability of connector inner wire and circuit board in the cavity body filter greatly, not fragile circuit board, and can guarantee the signal good communication.
Description of drawings
In order to be illustrated more clearly in the technical scheme among the utility model embodiment, the accompanying drawing of required use is done to introduce simply in will describing embodiment below, apparently, accompanying drawing in describing below only is embodiment more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the partial cross-sectional cut-away view that a kind of cavity body filter is connected with circuit board in the prior art;
Fig. 2 is the partial cross-sectional cut-away view that a kind of cavity body filter among the utility model embodiment is connected with circuit board;
Fig. 3 is the partial cross-sectional cut-away view that the another kind of cavity body filter among the utility model embodiment is connected with circuit board;
Fig. 4 is the partial cross-sectional cut-away view that another cavity body filter among the utility model embodiment is connected with circuit board;
Fig. 5 is transferred to the frequency-time delay figure of cavity by inner wire from circuit board for signal in the prior art;
Fig. 6 is transferred to the frequency-time delay figure of cavity by inner wire from circuit board for the utility model embodiment signal;
Fig. 7 is the utility model embodiment three signal receiving/transmission device structured flowcharts.
Embodiment
Below in conjunction with the accompanying drawing among the utility model embodiment, the technical scheme among the utility model embodiment is clearly and completely described, obviously, described embodiment only is the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment that obtains under the creative work prerequisite, all belong to the scope of the utility model protection.
Embodiment one,
A kind of cavity body filter, as shown in Figure 2, comprise cavity 200, cover plate 210 and be located at connector inner wire 230 in the described cavity, described connector inner wire 230 passes described cover plate 210 and is connected with the external circuit board 250, described connector inner wire 230 comprises first inner wire 2301 and second inner wire 2302, described first inner wire 2301 is connected with described the external circuit board 250, described second inner wire 2302 is connected with cavity 200, described first inner wire 2301 and described second inner wire, 2302 matched in clearance form structure capacitive, described internal signal transmission point is connected with transmission point signal on described the external circuit board 250 by described structure capacitive, also is provided with the radio frequency low-noise amplifier that is connected with transmission point signal on described the external circuit board.
Also be provided with the radio-frequency power amplifier that is connected with transmission point signal and the circulator that is connected with described radio-frequency power amplifier with described radio frequency low-noise amplifier respectively on described the external circuit board.
Described cover plate 210 capping cavitys 200.Connector outer conductor 220 is connected with cover plate 210, connector inner wire 230 is located at connector and is led outward in 220 bodies, and connector inner wire 230 passes cover plate 110, be connected with cavity body filter the external circuit board 250, connector outer conductor 220 and connector inner wire 230 adopt coaxial design, constitute the structure that signal transmits.Connector outer conductor 220 further is provided with conduction insulation rubber 224, is used for preventing leakage signal.
Described first inner wire 2301 and described second inner wire, 2302 matched in clearance can make between first inner wire and second inner wire and form structure capacitive, further make cavity and circuit board transmit signal by capacity coupled mode.
On the resonant rod that described inside cavity internal signal transmission point can be arranged on the cavity or cavity is interior, described second inner wire is connected on the cavity or is connected on the resonant rod.
Described second inner wire 2302 of a kind of execution mode is provided with cavity, described second inner wire 2302 is fixed on the cavity, described first inner wire 2301 inserts in the cavity of second inner wire 2302 described first inner wire 2301 and described second inner wire, 2302 matched in clearance.
Described second inner wire of another kind of execution mode is provided with cavity, and described second inner wire and cavity are one-body molded, and described first inner wire inserts in the cavity of second inner wire, described first inner wire and the described second inner wire matched in clearance.By adopting second inner wire and cavity one-body molded, second inner wire and cavity are well linked together, and make manufacture craft more simple and convenient.
Described first inner wire of another execution mode is provided with cavity, and described second inner wire inserts in the cavity of first inner wire, described first inner wire and the described second inner wire matched in clearance, described first inner wire and the described second inner wire matched in clearance.
Described second inner wire can also be connected on the resonant rod, is used for making between circuit board and the resonant rod transmitting signal.
Described first inner wire 2301 links together by bolt 260 with described the external circuit board 250.As Fig. 3, described first inner wire 2301 can also be connected by welding manner with described the external circuit board 250; As shown in Figure 4, described first inner wire 2301 can also be connected by nut 270 with described the external circuit board 250.
The utility model embodiment is split into first inner wire and second inner wire with the hard connection inner wire in original technical scheme, at first second inner wire is assemblied on the cavity, assemble first inner wire then, first inner wire and circuit board are passed through screw, nut or be welded to connect, because first inner wire and second inner wire adopt matched in clearance, so first inner wire and second inner wire can have relatively moving among a small circle at axial direction, eliminate gap or interference between first inner wire and the circuit board by this movement among a small circle, simultaneously, form electric capacity between first inner wire and second inner wire, the transmission of signal is transmitted by capacity coupled mode.
The cavity body filter that the utility model embodiment provides has proposed improvement project at the connected mode of circuit board and connector inner wire, can eliminate the relative position error between the signal transfer point of connector inner wire and circuit board, can guarantee well to contact between the signal transfer point of connector inner wire and cavity body filter the external circuit board.The utility model is divided into connector first inner wire and second inner wire with the connector inner wire, form structure capacitive by the gap between first inner wire and second inner wire, improved the connection reliability of connector inner wire and circuit board in the cavity body filter greatly, not fragile circuit board, and can guarantee the signal good communication.
Further, be provided with dielectric 2303 between described first inner wire 2301 and described second inner wire 2302, described first inner wire, second inner wire and described dielectric form structure capacitive.Described dielectric is positioned on first inner wire or second inner wire, and described dielectric can add by machine, injection moulding or mode such as surface spraying etc. are arranged on first inner wire or second inner wire.Described dielectric can be any insulating material, is preferably PTFE (polytetrafluoroethylene) material.
And the circuit board of transmission signal is provided with the final stage output capacitance between the cavity, the structure capacitive that forms between described first inner wire and second inner wire can replace the final stage output capacitance on the circuit board, the structure capacitive that forms between described first inner wire and second inner wire can be adjusted according to the size of frequency, length, size or thickness such as changing first inner wire and second inner wire perhaps change the material of dielectric etc.
The emulation experiment that following basis is concrete illustrates inner wire is divided into the structure of first inner wire and second inner wire formation structure capacitive to the influence of signal transmission.
As shown in Figure 5, for signal in the prior art is transferred to the frequency-time delay figure of cavity from circuit board by inner wire, as we know from the figure, transverse axis is frequency values, and the longitudinal axis is the time delay time, and when frequency values was 2.59GHZ, time delay value was 11.22ns to the maximum.
As shown in Figure 6, be transferred to the frequency-time delay figure of cavity by first inner wire, structure capacitive and second inner wire from circuit board for the utility model embodiment signal, as we know from the figure, transverse axis is frequency values, the longitudinal axis is the time delay time, when frequency values was 2.59GHZ, time delay value was 11.66ns to the maximum.
From above-mentioned The simulation experiment result as can be known, the gap of the time delay value of the utility model embodiment and prior art is 0.44ns, and in the signal transmission of filter, can ignore within 1ns by the signal time delay value of inner wire, to not influence of the transmission of the signal in the cavity.
The utility model embodiment is divided into first inner wire and second inner wire with inner wire, and between described first inner wire and described second inner wire, be provided with dielectric, make described first inner wire, second inner wire and described dielectric form structure capacitive, the relative position error between the signal transfer point of elimination connector inner wire and circuit board, can guarantee well to contact between the signal transfer point of connector inner wire and cavity body filter the external circuit board, and can substitute the final stage output capacitance on original circuit board, the cost of manufacture of the circuit board that reduces, the while does not influence the laser propagation effect of signal.
Cavity body filter in the present embodiment can be frequency-selecting equipment such as duplexer, mixer, tower amplifier.
Embodiment two,
A kind of cavity body filter, comprise cavity, cover plate and be located at connector inner wire in the described cavity, described connector inner wire passes described cavity and is connected with the external circuit board, described connector inner wire comprises first inner wire and second inner wire, described first inner wire is connected with transmission point signal on described the external circuit board, internal signal transmission point in described second inner wire and the cavity is connected, described first inner wire and the described second inner wire matched in clearance form structure capacitive, described internal signal transmission point is connected with transmission point signal on described the external circuit board by described structure capacitive, also is provided with the radio frequency low-noise amplifier that is connected with transmission point signal on described the external circuit board.
Also be provided with the radio-frequency power amplifier that is connected with transmission point signal and the circulator that is connected with described radio-frequency power amplifier with described radio frequency low-noise amplifier respectively on described the external circuit board.
Described first inner wire and the described second inner wire matched in clearance can make between first inner wire and second inner wire and form structure capacitive, further make cavity and circuit board transmit signal by capacity coupled mode.
Described cavity adopts inverted form, cover plate is positioned at the below of cavity, cavity bottom is provided with the hole of passing for inner wire, described inside cavity internal signal transmission point can be arranged on the cavity or cavity in resonant rod on or on the cover plate, described second inner wire is connected on the cavity or is connected on the resonant rod or on the cover plate.
Described second inner wire of a kind of execution mode is provided with cavity, and described second inner wire 2302 is fixed on the cavity, and described first inner wire inserts in the cavity of second inner wire, described first inner wire and the described second inner wire matched in clearance.
Described second inner wire of another kind of execution mode is provided with cavity, and described second inner wire and cavity are one-body molded, and described first inner wire inserts in the cavity of second inner wire, described first inner wire and the described second inner wire matched in clearance.By adopting second inner wire and cavity one-body molded, second inner wire and cavity are well linked together, and make manufacture craft more simple and convenient.
Described first inner wire of another execution mode is provided with cavity, and described second inner wire inserts in the cavity of first inner wire, described first inner wire and the described second inner wire matched in clearance, described first inner wire and the described second inner wire matched in clearance.
Described second inner wire can also be connected on the resonant rod, is used for making between circuit board and the resonant rod transmitting signal.
The cavity body filter that the utility model embodiment provides has proposed improvement project at the connected mode of circuit board and connector inner wire, can eliminate the relative position error between the signal transfer point of connector inner wire and circuit board, can guarantee well to contact between the signal transfer point of connector inner wire and cavity body filter the external circuit board.The utility model is divided into connector first inner wire and second inner wire with the connector inner wire, form structure capacitive by the gap between first inner wire and second inner wire, improved the connection reliability of connector inner wire and circuit board in the cavity body filter greatly, not fragile circuit board, and can guarantee the signal good communication.
Embodiment three,
A kind of signal receiving/transmission device as shown in Figure 7, comprises above-mentioned cavity body filter 1, is connected with reception antenna 5, and carries out filtering to received signal; Radio frequency low-noise amplifier 2 is connected with the signal output part of described cavity body filter 1; Circulator 4 is connected with the signal output part of described low noise amplifier 2; Mixer 7 is connected with described circulator 4; Radio-frequency power amplifier 3, input is connected with the signal output part of described mixer 7, and output is connected with described cavity body filter 1; Transmitting antenna 6 receives the output signal of described cavity body filter 1 and signal is launched.
Described cavity body filter comprises cavity, cover plate and be located at connector inner wire in the described cavity, described connector inner wire passes described cover plate and is connected with circuit board, described connector inner wire comprises first inner wire and second inner wire, described first inner wire is connected with transmission point signal on the described circuit board, internal signal transmission point in described second inner wire and the cavity is connected, described first inner wire and the described second inner wire matched in clearance form structure capacitive, and described internal signal transmission point passes through described structure capacitive and is connected with transmission point signal on the described circuit board.
Also be provided with the radio-frequency power amplifier and the radio frequency low-noise amplifier that are connected with described transmission point signal on the described circuit board, described reception antenna receives external information, after carrying out filtering by cavity body filter, enter the low noise amplifier that is connected with cavity body filter, after this low noise amplifier low noise amplification, signal is admitted to first port of coupled circulator, and second port by circulator is transferred to the base station with signal at last.The signal of base station emission at first enters by second port of the circulator that is connected with the base station, utilize the 3rd port of circulator to enter mixer, the signal of mixer is flowed to power amplifier, signal is amplified into the cavity body filter that is attached thereto through radio-frequency power amplifier and carries out filter process, makes signal be sent to transmitting antenna at last and launches.
Cavity body filter in the utility model embodiment signal receiving/transmission device is divided into first inner wire and second inner wire with inner wire, and between described first inner wire and described second inner wire, be provided with dielectric, make described first inner wire, second inner wire and described dielectric form structure capacitive, the relative position error between the signal transfer point of elimination connector inner wire and circuit board, can guarantee well to contact between the signal transfer point of connector inner wire and cavity body filter the external circuit board, and can substitute the final stage output capacitance on original circuit board, the cost of manufacture of the circuit board that reduces, the while does not influence the laser propagation effect of signal.
Used specific case herein principle of the present utility model and execution mode are set forth, the explanation of above embodiment just is used for helping to understand method of the present utility model and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present utility model, the part that all can change in specific embodiments and applications, in sum, this description should not be construed as restriction of the present utility model.
Claims (9)
1. cavity body filter, it is characterized in that: comprise cavity, cover plate and be located at connector inner wire in the described cavity, described connector inner wire passes described cover plate and is connected with the external circuit board, described connector inner wire comprises first inner wire and second inner wire, described first inner wire is connected with transmission point signal on described the external circuit board, internal signal transmission point in described second inner wire and the cavity is connected, described first inner wire and the described second inner wire matched in clearance form structure capacitive, and described internal signal transmission point passes through described structure capacitive and is connected with transmission point signal on described the external circuit board.
2. cavity body filter according to claim 1, it is characterized in that: described second inner wire is provided with cavity, described first inner wire inserts in the cavity of second inner wire or described first inner wire is provided with cavity, and described second inner wire inserts in the cavity of first inner wire.
3. cavity body filter according to claim 1, it is characterized in that: described second inner wire is connected on the cavity or is connected on the resonant rod.
4. cavity body filter according to claim 3, it is characterized in that: described second inner wire and cavity are one-body molded.
5. according to any described cavity body filter of claim 1 to 4, it is characterized in that: be provided with dielectric in the gap between described first inner wire and described second inner wire, described first inner wire, second inner wire and described dielectric form structure capacitive.
6. according to any described cavity body filter of claim 1 to 4, it is characterized in that: described first inner wire is connected by riveted joint, crimping, socket, welding or threaded connection mode with described the external circuit board.
7. according to any described cavity body filter of claim 1 to 4, it is characterized in that: also be provided with the radio frequency low-noise amplifier that is connected with transmission point signal on described the external circuit board.
8. according to any described cavity body filter of claim 7, it is characterized in that: also be provided with the radio-frequency power amplifier that is connected with transmission point signal and the circulator that is connected with described radio-frequency power amplifier with described radio frequency low-noise amplifier respectively on described the external circuit board.
9. signal receiving/transmission device is characterized in that:
Comprise any described cavity body filter of claim 1 to 8, be connected with reception antenna, and carry out filtering to received signal;
Radio frequency low-noise amplifier is connected with the signal output part of described cavity body filter;
Circulator is connected with the signal output part of described low noise amplifier;
Mixer is connected with described circulator;
Radio-frequency power amplifier, input is connected with the signal output part of described mixer, and output is connected with described cavity body filter;
Transmitting antenna receives the output signal of described cavity body filter and signal is launched.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220710710XU CN203039057U (en) | 2012-12-20 | 2012-12-20 | Cavity filter and signal transceiver device |
| US14/385,771 US9503037B2 (en) | 2012-03-16 | 2013-03-15 | Cavity filter, power amplifying module |
| PCT/CN2013/072757 WO2013135206A1 (en) | 2012-03-16 | 2013-03-15 | Cavity filter, power amplifier module, and signal transceiver device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220710710XU CN203039057U (en) | 2012-12-20 | 2012-12-20 | Cavity filter and signal transceiver device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203039057U true CN203039057U (en) | 2013-07-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220710710XU Expired - Lifetime CN203039057U (en) | 2012-03-16 | 2012-12-20 | Cavity filter and signal transceiver device |
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| CN (1) | CN203039057U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103491656A (en) * | 2013-08-20 | 2014-01-01 | 华为技术有限公司 | Base station and duplexor thereof |
| CN104143676A (en) * | 2014-07-28 | 2014-11-12 | 深圳三星通信技术研究有限公司 | Capacitance coupling assembly and filter |
| WO2015035759A1 (en) * | 2013-09-10 | 2015-03-19 | 深圳市大富科技股份有限公司 | Remote radio head unit, cavity filter, and coaxial connector assembly |
| CN105612665A (en) * | 2013-09-10 | 2016-05-25 | 深圳市大富科技股份有限公司 | Remote radio head unit, cavity filter, and coaxial connector assembly |
| CN106816733A (en) * | 2015-11-27 | 2017-06-09 | 上海贝尔股份有限公司 | Radio frequency connection device and radio frequency communication devices |
| CN110770969A (en) * | 2018-06-06 | 2020-02-07 | 深圳市大富科技股份有限公司 | Signal filtering device and signal transceiving equipment |
-
2012
- 2012-12-20 CN CN201220710710XU patent/CN203039057U/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103491656A (en) * | 2013-08-20 | 2014-01-01 | 华为技术有限公司 | Base station and duplexor thereof |
| CN103491656B (en) * | 2013-08-20 | 2017-06-06 | 华为技术有限公司 | Base station and its duplexer |
| WO2015035759A1 (en) * | 2013-09-10 | 2015-03-19 | 深圳市大富科技股份有限公司 | Remote radio head unit, cavity filter, and coaxial connector assembly |
| CN105612665A (en) * | 2013-09-10 | 2016-05-25 | 深圳市大富科技股份有限公司 | Remote radio head unit, cavity filter, and coaxial connector assembly |
| CN105612665B (en) * | 2013-09-10 | 2018-08-14 | 深圳市大富科技股份有限公司 | Remote Radio Unit, cavity body filter and coaxial connector assemblies |
| CN104143676A (en) * | 2014-07-28 | 2014-11-12 | 深圳三星通信技术研究有限公司 | Capacitance coupling assembly and filter |
| CN104143676B (en) * | 2014-07-28 | 2016-10-05 | 深圳三星通信技术研究有限公司 | A kind of Capacitance Coupled assembly and wave filter |
| CN106816733A (en) * | 2015-11-27 | 2017-06-09 | 上海贝尔股份有限公司 | Radio frequency connection device and radio frequency communication devices |
| CN110770969A (en) * | 2018-06-06 | 2020-02-07 | 深圳市大富科技股份有限公司 | Signal filtering device and signal transceiving equipment |
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| CX01 | Expiry of patent term |
Granted publication date: 20130703 |
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