CN103546132B - A kind ofly adopt common port feed, microwave single-pole double-throw switch (SPDT) without the need to controlling separately and powering up - Google Patents
A kind ofly adopt common port feed, microwave single-pole double-throw switch (SPDT) without the need to controlling separately and powering up Download PDFInfo
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- CN103546132B CN103546132B CN201310473588.8A CN201310473588A CN103546132B CN 103546132 B CN103546132 B CN 103546132B CN 201310473588 A CN201310473588 A CN 201310473588A CN 103546132 B CN103546132 B CN 103546132B
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Abstract
The invention discloses and a kind ofly adopt common port feed, microwave single-pole double-throw switch (SPDT) without the need to controlling separately and powering up, comprise common port RFin, the first gating branch road and the second gating branch road, one end earthing of casing of common port RFin, the other end is parallel between the first gating branch road and the second gating branch road; First gating branch road comprises the first microstrip line L1, the second microstrip line L2 and the first PIN diode VD1, one end of L1 is connected with RFin, and the other end is connected with RFout1, and one end of L2 is parallel between L1 and RFout1, the other end of L2 is connected with the positive pole of VD1, the minus earth of VD1; One end that second gating branch road comprises the 3rd microstrip line L3 and the second PIN diode VD2, L3 is connected with RFin, and the other end is connected with RFout2, and the positive pole of VD2 is parallel between L3 and RFout2, the minus earth of VD2.The present invention adopts common port feeding classification, can complete switching gate function by radio frequency cable feed, without the need to controlling separately and powering up, goes for base station, high building top etc. and controls and power up all inconvenient occasion.
Description
Technical field
The present invention relates to a kind of radio-frequency (RF) switch, particularly relate to and a kind ofly adopt common port feed, microwave single-pole double-throw switch (SPDT) without the need to controlling separately and powering up.
Background technology
Microwave electron switch is the conventional device in microwave telecommunication system, and the channel being used for controlling microwave signal switches.It comprises a public port and multiple separate port, generally also needs independently Power supply and control port.Microwave electron switch adopts the various combination mode of PIN diode to realize usually, and traditional microwave single-pole double-throw switch (SPDT) is mainly divided into tandem, parallel and series-parallel three kinds of forms.
As shown in Figure 1, when control 1 adds positive current, control 2 when adding negative voltage, PIN diode VD1 conducting, VD2 ends the circuit theory diagrams of conventional tandem single-pole double-throw switch (SPDT), corresponding passage RFin-RFout1 conducting, and passage RFin-RFout2 ends; When control 2 adds positive current, when control 1 adds negative voltage, PIN diode VD2 conducting, VD1 ends, and corresponding passage RFin-RFout2 conducting, passage RFin-RFout1 ends.The feature of conventional tandem single-pole double-throw switch (SPDT) is the impact that radio-frequency channel is not subject to frequency, and bandwidth of operation is very wide.But its shortcoming is the rising along with frequency, and its insertion loss increases gradually, and isolation reduces gradually.
As shown in Figure 2, when control 1 adds negative voltage, when control 2 adds positive current, PIN diode VD1 ends the circuit theory diagrams of conventional parallel formula single-pole double-throw switch (SPDT), VD2 conducting, corresponding passage RFin-RFout1 conducting, and passage RFin-RFout2 ends; When control 2 adds negative voltage, when control 1 adds positive current, PIN diode VD2 ends, VD1 conducting, and corresponding passage RFin-RFout2 conducting, passage RFin-RFout1 ends.The shortcoming of conventional parallel formula single-pole double-throw switch (SPDT) is the impact that radio-frequency channel is subject to 1/4 λ, and bandwidth of operation is very narrow, and along with the rising of frequency, insertion loss becomes large gradually, and in the centre frequency of work, isolation is maximum; Depart from centre frequency far away, isolation is lower.
Traditional tandem, parallel, series-parallel single-pole double-throw switch (SPDT) all can only be applicable to the convenient connection such as pcb board, cabinet, rack and control, and have again the occasion of electric power system.Under some special occasions, both needed switch to carry out the switching controls of channel, there is no again power supply and control, as the antenna on top, base station, also need between antenna to select, but control terminal distance tens meters, base station usually, only there is radio frequency cable to connect base station to control terminal.At this moment just need design one to meet above-mentioned requirements, namely do not need the microwave switch controlling separately and power up.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, a kind of base station, high building top etc. of being applicable to is provided to control and power up all inconvenient the employing common port feed of occasion, the microwave single-pole double-throw switch (SPDT) without the need to controlling separately and powering up, can pass through radio frequency cable feed, insertion loss is low, isolation is high.
The object of the invention is to be achieved through the following technical solutions: a kind ofly adopt common port feed, microwave single-pole double-throw switch (SPDT) without the need to controlling separately and powering up, it comprises common port RFin, the first gating branch road and the second gating branch road, one end earthing of casing of common port RFin, the other end is parallel between the first gating branch road and the second gating branch road;
The first described gating branch road comprises the first microstrip line L1, the second microstrip line L2 and the first PIN diode VD1, one end of first microstrip line L1 is connected with common port RFin, the other end is connected with the first output RFout1, one end of second microstrip line L2 is parallel between the first microstrip line L1 and the first output RFout1, the other end of the second microstrip line L2 is connected with the positive pole of the first PIN diode VD1, the minus earth of the first PIN diode VD1;
The second described gating branch road comprises the 3rd microstrip line L3 and the second PIN diode VD2, one end of 3rd microstrip line L3 is connected with common port RFin, the other end is connected with the second output RFout2, the positive pole of the second PIN diode VD2 is parallel between the 3rd microstrip line L3 and the second output RFout2, the minus earth of the second PIN diode VD2.
As a further improvement on the present invention, the first filter capacitor C1 is in series with between the first described microstrip line L1 and the first output RFout1.
As a further improvement on the present invention, the second filter capacitor C2 is in series with between the 3rd described microstrip line L3 and the second output RFout2.
Further, the first described microstrip line L1, the second microstrip line L2 and the 3rd microstrip line L3 are 1/4 λ microstrip line.
The invention has the beneficial effects as follows:
1) adopt common port feeding classification, switching gate function can be completed by radio frequency cable feed, without the need to controlling separately and powering up, go for base station, high building top etc. and control and power up all inconvenient occasion;
2) insertion loss is low, standing-wave ratio is little, isolation is high;
3) power is born large.
Accompanying drawing explanation
Fig. 1 is the circuit theory diagrams of conventional tandem single-pole double-throw switch (SPDT);
Fig. 2 is the circuit theory diagrams of conventional parallel formula single-pole double-throw switch (SPDT);
Fig. 3 is the circuit theory diagrams of single-pole double-throw switch (SPDT) of the present invention.
Embodiment
Below in conjunction with accompanying drawing, technical scheme of the present invention is described in further detail, but protection scope of the present invention is not limited to the following stated.
As shown in Figure 3, a kind ofly adopt common port feed, microwave single-pole double-throw switch (SPDT) without the need to controlling separately and powering up, it comprises common port RFin, the first gating branch road and the second gating branch road, one end earthing of casing of common port RFin, the other end is parallel between the first gating branch road and the second gating branch road.
The first described gating branch road comprises the first microstrip line L1, the second microstrip line L2 and the first PIN diode VD1, one end of first microstrip line L1 is connected with common port RFin, the other end is connected with the first output RFout1, first output RFout1 ground connection, one end of second microstrip line L2 is parallel between the first microstrip line L1 and the first output RFout1, the other end of the second microstrip line L2 is connected with the positive pole of the first PIN diode VD1, the minus earth of the first PIN diode VD1.
The second described gating branch road comprises the 3rd microstrip line L3 and the second PIN diode VD2, one end of 3rd microstrip line L3 is connected with common port RFin, the other end is connected with the second output RFout2, second output RFout2 ground connection, the positive pole of the second PIN diode VD2 is parallel between the 3rd microstrip line L3 and the second output RFout2, the minus earth of the second PIN diode VD2.
As preferably, between the first microstrip line L1 and the first output RFout1, be in series with the first filter capacitor C1; The second filter capacitor C2 is in series with between 3rd microstrip line L3 and the second output RFout2.
The first described microstrip line L1, the second microstrip line L2 and the 3rd microstrip line L3 are 1/4 λ microstrip line.
The present invention is compared with conventional tandem single-pole double-throw switch (SPDT), conventional parallel formula single-pole double-throw switch (SPDT), and its performance comparison is as shown in table 1:
Table 1
The above is only the preferred embodiment of the present invention, be to be understood that the present invention is not limited to the form disclosed by this paper, should not regard the eliminating to other embodiments as, and can be used for other combinations various, amendment and environment, and can in contemplated scope described herein, changed by the technology of above-mentioned instruction or association area or knowledge.And the change that those skilled in the art carry out and change do not depart from the spirit and scope of the present invention, then all should in the protection range of claims of the present invention.
Claims (4)
1. one kind adopts common port feed, microwave single-pole double-throw switch (SPDT) without the need to controlling separately and powering up, it is characterized in that: it comprises common port RFin, the first gating branch road and the second gating branch road, one end earthing of casing of common port RFin, the other end is parallel between the first gating branch road and the second gating branch road;
The first described gating branch road comprises the first microstrip line L1, the second microstrip line L2 and the first PIN diode VD1, one end of first microstrip line L1 is connected with common port RFin, the other end is connected with the first output RFout1, one end of second microstrip line L2 is parallel between the first microstrip line L1 and the first output RFout1, the other end of the second microstrip line L2 is connected with the positive pole of the first PIN diode VD1, the minus earth of the first PIN diode VD1;
The second described gating branch road comprises the 3rd microstrip line L3 and the second PIN diode VD2, one end of 3rd microstrip line L3 is connected with common port RFin, the other end is connected with the second output RFout2, the positive pole of the second PIN diode VD2 is parallel between the 3rd microstrip line L3 and the second output RFout2, the minus earth of the second PIN diode VD2.
2. according to claim 1ly a kind ofly adopt common port feed, microwave single-pole double-throw switch (SPDT) without the need to controlling separately and powering up, it is characterized in that: between the first described microstrip line L1 and the first output RFout1, be in series with the first filter capacitor C1.
3. according to claim 1ly a kind ofly adopt common port feed, microwave single-pole double-throw switch (SPDT) without the need to controlling separately and powering up, it is characterized in that: between the 3rd described microstrip line L3 and the second output RFout2, be in series with the second filter capacitor C2.
4. adopt common port feed, microwave single-pole double-throw switch (SPDT) without the need to controlling separately and powering up according to a kind of in claims 1 to 3 described in any one, it is characterized in that: the first described microstrip line L1, the second microstrip line L2 and the 3rd microstrip line L3 are 1/4 λ microstrip line.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310473588.8A CN103546132B (en) | 2013-10-11 | 2013-10-11 | A kind ofly adopt common port feed, microwave single-pole double-throw switch (SPDT) without the need to controlling separately and powering up |
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| CN201310473588.8A CN103546132B (en) | 2013-10-11 | 2013-10-11 | A kind ofly adopt common port feed, microwave single-pole double-throw switch (SPDT) without the need to controlling separately and powering up |
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| CN103546132A CN103546132A (en) | 2014-01-29 |
| CN103546132B true CN103546132B (en) | 2016-01-27 |
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| CN107222183A (en) * | 2017-05-27 | 2017-09-29 | 中国电子科技集团公司第四十研究所 | A kind of wide-band microwave switch duplicate circuitry of low video feedthrough leakage |
| CN116827321B (en) * | 2023-08-28 | 2023-12-05 | 中国电子科技集团公司第二十九研究所 | Switch and resistor-based switch routing circuit and application method thereof |
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|---|---|---|---|---|
| EP0068870A2 (en) * | 1981-06-30 | 1983-01-05 | Matsushita Electric Industrial Co., Ltd. | Microwave integrated circuit mixer |
| CN201122649Y (en) * | 2007-05-24 | 2008-09-24 | 深圳国人通信有限公司 | Radio frequency converting switch |
| CN101283518A (en) * | 2005-10-13 | 2008-10-08 | Kmw株式会社 | Radio frequency switch |
| CN101517907A (en) * | 2006-09-27 | 2009-08-26 | Kmw株式会社 | Radio frequency switch |
| CN201414127Y (en) * | 2009-05-19 | 2010-02-24 | 京信通信系统（中国）有限公司 | Tower top amplifier and bypass switch switching circuit thereof |
| CN201557095U (en) * | 2009-08-11 | 2010-08-18 | 武汉凡谷电子技术股份有限公司 | Radio-frequency switch with electrifying or power-down double working modes |
| CN203491995U (en) * | 2013-10-11 | 2014-03-19 | 成都九华圆通科技发展有限公司 | Microwave single-pole double-throw switch employing common terminal feeding without separate control and powering |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10242702A (en) * | 1997-02-28 | 1998-09-11 | Saitama Nippon Denki Kk | High frequency switch circuit for radio device |
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2013
- 2013-10-11 CN CN201310473588.8A patent/CN103546132B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0068870A2 (en) * | 1981-06-30 | 1983-01-05 | Matsushita Electric Industrial Co., Ltd. | Microwave integrated circuit mixer |
| CN101283518A (en) * | 2005-10-13 | 2008-10-08 | Kmw株式会社 | Radio frequency switch |
| CN101517907A (en) * | 2006-09-27 | 2009-08-26 | Kmw株式会社 | Radio frequency switch |
| CN201122649Y (en) * | 2007-05-24 | 2008-09-24 | 深圳国人通信有限公司 | Radio frequency converting switch |
| CN201414127Y (en) * | 2009-05-19 | 2010-02-24 | 京信通信系统（中国）有限公司 | Tower top amplifier and bypass switch switching circuit thereof |
| CN201557095U (en) * | 2009-08-11 | 2010-08-18 | 武汉凡谷电子技术股份有限公司 | Radio-frequency switch with electrifying or power-down double working modes |
| CN203491995U (en) * | 2013-10-11 | 2014-03-19 | 成都九华圆通科技发展有限公司 | Microwave single-pole double-throw switch employing common terminal feeding without separate control and powering |
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Denomination of invention: A kind ofly adopt common port feed, without the microwave single-pole double-throw switch (SPDT) of controlling separately and powering up Effective date of registration: 20160728 Granted publication date: 20160127 Pledgee: Agricultural Bank of China Limited by Share Ltd Chengdu West Branch Pledgor: Jiuhua Yuantong Science and Technology Development Co., Ltd., Chengdu Registration number: 2016510000036 |
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Inventor after: Ning Tao Inventor after: Ma Gang Inventor after: Liu Kehui Inventor before: Ning Tao Inventor before: Ma Gang |
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Date of cancellation: 20201224 Granted publication date: 20160127 Pledgee: Agricultural Bank of China Limited by Share Ltd. Chengdu West Branch Pledgor: CHENGDU JIUHUA YUANTONG TECHNOLOGY DEVELOPMENT Co.,Ltd. Registration number: 2016510000036 |
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