CN107483072B - Radio frequency high-power transceiving common circuit - Google Patents
Radio frequency high-power transceiving common circuit Download PDFInfo
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- CN107483072B CN107483072B CN201710696892.7A CN201710696892A CN107483072B CN 107483072 B CN107483072 B CN 107483072B CN 201710696892 A CN201710696892 A CN 201710696892A CN 107483072 B CN107483072 B CN 107483072B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/14—Two-way operation using the same type of signal, i.e. duplex
- H04L5/16—Half-duplex systems; Simplex/duplex switching; Transmission of break signals non-automatically inverting the direction of transmission
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- Computer Networks & Wireless Communication (AREA)
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Abstract
The invention provides a radio frequency high-power transceiving shared circuit; four diodes of a diode D1, a diode D2, a diode D3 and a diode D4 form a four-arm bridge circuit, wherein the polarities of every two adjacent diodes are opposite; on one of the pair of cathode-connected diode connection lines, there is a node connected to the transmission TX terminal, while there is a signal node connected in series between the connection node of the transmission TX terminal and one of the adjacent diodes, to which a control signal K0 terminal is connected and which is connected to circuit ground, and on the other pair of cathode-connected diode connection lines, there is a signal node connected to circuit ground and to the control signal K1 terminal. The invention has the characteristics of high power, high isolation, low insertion loss and wide frequency band, can be widely applied to high-power half-duplex wireless communication systems, and has strong universality.
Description
Technical Field
The invention relates to a radio frequency high-power transceiving shared circuit.
Background
In the networking communication of a wireless communication system, the difficult problem of multi-channel and multi-user is generally solved by adopting a time division + frequency division mode. This requires the communication device to use half duplex communication. In view of solving the cost and practical erection, the communication equipment generally uses a pair of antennas for transmitting and receiving, so that the problem of transmitting and receiving under the condition of high power needs to be solved. The existing high-power radio frequency transceiving common technology generally adopts a bridge type positive voltage driving or multi-tube parallel/series connection mode, and the technology has the problems of low isolation, large insertion loss and complex driving circuit.
Disclosure of Invention
In order to solve the technical problems, the invention provides a radio frequency high-power receiving and transmitting shared circuit, which can realize high-power radio frequency receiving and transmitting sharing with high isolation and low insertion loss and is suitable for a radio frequency communication system with high power and high isolation requirements.
The invention is realized by the following technical scheme.
The invention provides a radio frequency high-power transceiving shared circuit; four diodes of a diode D1, a diode D2, a diode D3 and a diode D4 form a four-arm bridge circuit, wherein the polarities of every two adjacent diodes are opposite; on one of the pair of diode connection lines connected to the negative poles, there is a node connected to the transmission TX end, and a signal node connected in series between the connection node of the transmission TX end and one of the adjacent diodes, to which a control signal K0 is connected and which is connected to circuit ground, and on the other pair of diode connection lines connected to the negative poles, there is a signal node connected to circuit ground and to a control signal K1; one pair of diode connecting lines with positive poles are connected with a node to the receiving RX end, and the other pair of diode connecting lines with positive poles are connected with a connecting node to the signal ANT end.
The node connected with the transmitting TX terminal is positioned on a negative pole phase connecting line of the diode D1 and the diode D4, and the signal node connected with the control signal K0 end is positioned between the connecting node of the diode D4 and the transmitting TX terminal.
And a signal node connected with the control signal K1 end is positioned on a negative pole phase connecting line of the diode D2 and the diode D3.
The node connected with the receiving RX terminal is positioned on a positive electrode connecting line of a diode D3 and a diode D4; the connection node of the signal ANT end is positioned on a line connected with the anodes of the diode D1 and the diode D2, and a capacitor is connected in series between the signal ANT end and the connection node.
And a resistor R2 is connected in series on a line of the control signal K0 end connected with the signal node.
And a resistor R1 is connected in series on a line of the control signal K1 end connected with the signal node.
A signal node connected with the end of the control signal K0 is connected with a circuit ground in series, and a capacitor C1 is connected in series on the circuit; and a capacitor is connected in series on the upper page of the circuit of the signal node connected with the end of the control signal K1 and the circuit ground.
An inductor L4 is connected in series between a signal node connected with the control signal K0 end and the diode D4, and a node series capacitor C2 is connected between the inductor L4 and the diode D4 and then is connected to a connection node of the receiving RX end; an inductor L5 is connected in series between a signal node connected with the control signal K0 end and a node connected with the transmitting TX end.
The node connected with the signal ANT terminal is also connected with the circuit ground after being connected with the inductor L1 in series.
An inductor L3 is connected in series between the diode D4 and a node connected with the receiving RX end, and a node is connected with a circuit ground between the diode D4 and the inductor L3.
The invention has the beneficial effects that: the high-power half-duplex wireless communication system has the characteristics of high power, high isolation, low insertion loss and wide frequency band, can be widely applied to the high-power half-duplex wireless communication system, and has strong universality.
Drawings
Fig. 1 is a schematic diagram of the connection of the present invention.
Detailed Description
The technical solution of the present invention is further described below, but the scope of the claimed invention is not limited to the described.
A radio frequency high power transceiving shared circuit as shown in fig. 1; four diodes of a diode D1, a diode D2, a diode D3 and a diode D4 form a four-arm bridge circuit, wherein the polarities of every two adjacent diodes are opposite; on one of the pair of diode connection lines connected to the negative poles, there is a node connected to the transmission TX end, and a signal node connected in series between the connection node of the transmission TX end and one of the adjacent diodes, to which a control signal K0 is connected and which is connected to circuit ground, and on the other pair of diode connection lines connected to the negative poles, there is a signal node connected to circuit ground and to a control signal K1; one pair of diode connecting lines with positive poles are connected with a node to the receiving RX end, and the other pair of diode connecting lines with positive poles are connected with a connecting node to the signal ANT end.
The node connected with the transmitting TX terminal is positioned on a negative pole phase connecting line of the diode D1 and the diode D4, and the signal node connected with the control signal K0 end is positioned between the connecting node of the diode D4 and the transmitting TX terminal.
And a signal node connected with the control signal K1 end is positioned on a negative pole phase connecting line of the diode D2 and the diode D3.
The node connected with the receiving RX terminal is positioned on a positive electrode connecting line of a diode D3 and a diode D4; the connection node of the signal ANT end is positioned on a line connected with the anodes of the diode D1 and the diode D2, and a capacitor is connected in series between the signal ANT end and the connection node.
And a resistor R2 is connected in series on a line of the control signal K0 end connected with the signal node.
And a resistor R1 is connected in series on a line of the control signal K1 end connected with the signal node.
A signal node connected with the end of the control signal K0 is connected with a circuit ground in series, and a capacitor C1 is connected in series on the circuit; and a capacitor is connected in series on the upper page of the circuit of the signal node connected with the end of the control signal K1 and the circuit ground.
An inductor L4 is connected in series between a signal node connected with the control signal K0 end and the diode D4, and a node series capacitor C2 is connected between the inductor L4 and the diode D4 and then is connected to a connection node of the receiving RX end; an inductor L5 is connected in series between a signal node connected with the control signal K0 end and a node connected with the transmitting TX end.
The node connected with the signal ANT terminal is also connected with the circuit ground after being connected with the inductor L1 in series.
An inductor L3 is connected in series between the diode D4 and a node connected with the receiving RX end, and a node is connected with a circuit ground between the diode D4 and the inductor L3.
Thus, in summary, the present invention consists of a PIN diode, an inductor, a capacitor and a resistor. The PIN diodes are sequentially connected end to end, and are reasonably connected with the inductor and the capacitor to form a four-arm bridge type structure, and the radio-frequency signal and the control signal are connected through a bridge arm combination position. The added choke inductor is directly grounded at one end and connected to the other leg through a capacitor at one end. The isolation between the receiving and transmitting can be increased under the off state of the bridge conductor, and the insertion loss of the bridge can be reduced under the on state.
Specifically, the invention comprises PIN diodes D1, D2, D3 and D4, inductors L1, L2, L3, L4 and L5, capacitors C1 and C2, the whole bridge circuit structure is adopted, and the connection relationship is as follows: the positive electrodes of PIN diodes D1 and D2 are connected with the circuit ground through L1, the negative electrodes of D2 and D3 are connected with a control signal K1 through an inductor L2, the negative electrodes of D1 and D4 are connected with the circuit ground through inductors L5 and L4, the connection part of L4 and L5 is connected with the circuit ground through a capacitor C1 and is connected with the control signal K0, the positive electrode of D3 is connected with the circuit ground through L3, the positive electrode of D4 is directly connected with the circuit ground, and the positive electrode of D3 is connected with the negative electrode of D4 through a capacitor C2. The "H" state of the control signals K0, K1 is 100V, the "L" state is-3.3V, and the control signals K0, K1 are inverted with respect to each other. The working principle is as follows: when the control signal K0 is "H" and K1 is "L", the diodes D2 and D3 are turned on, the diodes D1 and D4 are turned off, the ANT terminal of the signal port is connected to the RX terminal, the TX terminal is isolated from the ANT terminal, and the TX terminal is isolated from the RX terminal. When the control signal K0 is "L" and the control signal K1 is "H", the diodes D2 and D3 are turned off, the diodes D1 and D4 are turned on, the ANT terminal and the RX terminal of the signal port are isolated, the TX terminal and the ANT terminal are connected, and the TX terminal and the RX terminal are isolated. C2 bridged between bridge arms acts together with L4 and D4, the isolation between the TX end and the RX end is increased, and the isolation can be improved by more than 15D.
Claims (4)
1. A radio frequency high-power transceiving shared circuit is characterized in that: the four-arm bridge circuit is formed by four PIN diodes including a PIN diode D1, a PIN diode D2, a PIN diode D3 and a PIN diode D4, wherein the polarities of every two adjacent PIN diodes are opposite; a node is connected to the transmitting TX end on one pair of PIN diode connecting lines with negative poles connected, a signal node is connected in series between the connecting node of the transmitting TX end and one adjacent PIN diode, a control signal K0 end is connected to the signal node, the signal node is connected with the circuit ground, and a signal node is connected with the circuit ground and the control signal K1 end on the other pair of PIN diode connecting lines with negative poles connected; a node on one of the PIN diode connecting circuits with the connected anodes is connected to a receiving RX end, a connecting node on the other PIN diode connecting circuit with the connected anodes is connected to a signal ANT end, and the signal ANT end, the receiving RX end and the transmitting TX end are respectively connected with a capacitor in series; the node connected with the receiving RX end is positioned on a positive pole connecting line of the PIN diode D3 and the PIN diode D4; the connection node of the signal ANT end is positioned on a line connected with the positive electrodes of the PIN diode D1 and the PIN diode D2; a signal node connected with the end of the control signal K1 is also connected with a capacitor in series on a circuit of the circuit ground;
the four-arm bridge connection structure is as follows: the positive electrodes of PIN diodes D1 and D2 are connected with the circuit ground through L1, the negative electrodes of D2 and D3 are connected with a control signal K1 through an inductor L2, the negative electrodes of D1 and D4 are connected with the circuit ground through inductors L5 and L4, the connection part of L4 and L5 is connected with the circuit ground through a capacitor C1 and is connected with the control signal K0, the positive electrode of D3 is connected with the circuit ground through L3, the positive electrode of D4 is directly connected with the circuit ground, and the positive electrode of D3 is connected with the negative electrode of D4 through a capacitor C2.
2. A radio frequency high power transceiving circuit as claimed in claim 1, wherein: and a resistor R2 is connected in series on a line of the control signal K0 end connected with the signal node.
3. A radio frequency high power transceiving circuit as claimed in claim 1, wherein: and a resistor R1 is connected in series on a line of the control signal K1 end connected with the signal node.
4. A radio frequency high power transceiving circuit as claimed in claim 1, wherein: an inductor L4 is connected in series between a signal node connected with the control signal K0 end and the PIN diode D4, and a node series capacitor C2 is connected between the inductor L4 and the PIN diode D4 and then connected to a connection node of the receiving RX end; an inductor L5 is connected in series between a signal node connected with the control signal K0 end and a node connected with the transmitting TX end.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710696892.7A CN107483072B (en) | 2017-08-15 | 2017-08-15 | Radio frequency high-power transceiving common circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710696892.7A CN107483072B (en) | 2017-08-15 | 2017-08-15 | Radio frequency high-power transceiving common circuit |
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| CN107483072A CN107483072A (en) | 2017-12-15 |
| CN107483072B true CN107483072B (en) | 2020-04-24 |
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| CN201710696892.7A Active CN107483072B (en) | 2017-08-15 | 2017-08-15 | Radio frequency high-power transceiving common circuit |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103703689A (en) * | 2011-07-26 | 2014-04-02 | 摩托罗拉移动有限责任公司 | Front end employing pin diode switch with high linearity and low loss for simultaneous transmission |
| CN106470026A (en) * | 2015-08-18 | 2017-03-01 | 中兴通讯股份有限公司 | A kind of radio-frequency switch circuit and radio frequency link |
| CN106571850A (en) * | 2016-11-08 | 2017-04-19 | 北京澳丰源科技股份有限公司 | Bidirectional amplifier of TDD mode |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20050055519A (en) * | 2003-12-08 | 2005-06-13 | 엘지전자 주식회사 | Radio frequency switch |
| JP4899219B2 (en) * | 2005-01-17 | 2012-03-21 | エスティー‐エリクソン、ソシエテ、アノニム | Modular switching device |
| FR2889006B1 (en) * | 2005-07-22 | 2007-09-21 | St Microelectronics Sa | ANTENNA SWITCH |
| EP1873692B1 (en) * | 2006-06-29 | 2011-12-21 | Semiconductor Energy Laboratory Co., Ltd. | Semiconductor device |
| CN101321012A (en) * | 2007-06-06 | 2008-12-10 | 北京信威通信技术股份有限公司 | Method and device for implementing radio frequency link transmit-receive sharing by switch array in TDD mode |
| US10243248B2 (en) * | 2013-12-31 | 2019-03-26 | Skyworks Solutions, Inc. | Devices and methods related to high power diode switches |
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2017
- 2017-08-15 CN CN201710696892.7A patent/CN107483072B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103703689A (en) * | 2011-07-26 | 2014-04-02 | 摩托罗拉移动有限责任公司 | Front end employing pin diode switch with high linearity and low loss for simultaneous transmission |
| CN106470026A (en) * | 2015-08-18 | 2017-03-01 | 中兴通讯股份有限公司 | A kind of radio-frequency switch circuit and radio frequency link |
| CN106571850A (en) * | 2016-11-08 | 2017-04-19 | 北京澳丰源科技股份有限公司 | Bidirectional amplifier of TDD mode |
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| CN107483072A (en) | 2017-12-15 |
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