CN203057147U - Transmit-receive commutation circuit of bilateral amplifier - Google Patents
Transmit-receive commutation circuit of bilateral amplifier Download PDFInfo
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- CN203057147U CN203057147U CN 201320044405 CN201320044405U CN203057147U CN 203057147 U CN203057147 U CN 203057147U CN 201320044405 CN201320044405 CN 201320044405 CN 201320044405 U CN201320044405 U CN 201320044405U CN 203057147 U CN203057147 U CN 203057147U
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- amplifier
- circuit
- circulator
- reception
- receiving
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Abstract
The utility model provides a transmit-receive commutation circuit of a bilateral amplifier. The transmit-receive commutation circuit can effectively improve isolation and reduce interference and comprises a detector circuit, a coupler, a change-over switch, emission amplifiers, reception amplifiers, a reception switch, a circulator and an antenna. The detector circuit, the coupler, the change-over switch, the emission amplifiers, the circulator and the antenna are connected in sequence to form an emission circuit. The antenna, the circulator, the reception switch, the reception amplifiers, the change-over switch and the coupler are connected in sequence to form a reception circuit. The transmit-receive commutation circuit also comprises a PIN tube and a control circuit. One end of the PIN tube is grounded, and the other end of the PIN tube is connected between the reception switch and the circulator. The control circuit is composed of an impressed voltage, an inductor and a capacitor. The working state of the PIN tube is controlled by the impressed voltage. When the impressed voltage is of high level, the PIN tube is cut off and the reception circuit is free of influence. When the impressed voltage is of low level, the PIN tube is conducted and a reception signal is grounded through the PIN tube.
Description
Technical field
The utility model relates to electronic technology field, especially relates to a kind of two-way amplifier transmitting-receiving commutation circuit that is applied in time division duplex (TDD) communication system.
Background technology
Two-way amplifier is widely used in the communication system of multiple standards such as present GSM, CDMA, WCDMA, PHS, in the duplexing transmission circuit of communication system, usually adopt the switch handoff technique to make transceiver channel share common antenna, reduce volume and the redundancy of circuit; Radio-frequency (RF) switch is for one of control device of control radio signal transmission path and signal magnitude, in many fields such as radio communication, electronic countermeasures, radar system extensive use is arranged.
Along with the development of modern wireless communication systems, communication systems such as mobile communication, radar, satellite communication have had higher requirement to aspects such as the switching speed of transceiver toggle switch, power capacity, integrations; In the communication countermeasures system, the high-power transmit-receive switching mechanism of frequency hopping interference equipment is technological difficulties in engineering, also is a critical component simultaneously; High-power transmit-receive switching mechanism is a kind of device that is serially connected between the output of transmitter power amplifier and antenna, the receiver, so it must satisfy the requirement of transmitter working frequency range; When transmitter is worked, bear 500W power, when operation of receiver, the power amplifier noise elimination there are enough isolations simultaneously, require the transmitting-receiving conversion speed of microsecond magnitude in addition again, thereby the frequency hopping that guarantees jamming equipment is scouted the enforcement of disturbing.
Use the tdd mode amplifier at present, generally adopt integrated switch to carry out the switch operating of transmission circuit, also have and adopt passive ferrite circulator to make the transmitting-receiving buffer circuit to satisfy the switching of mode of operation.The former circuit is simple, but because the semiconductor module Power Limitation can only be exported very little linear power, can not satisfy the high-power requirement of output of base station; The ferrite circulator that the latter adopts makes the high-power transmitting antenna of directly receiving of output, reliability is higher, linear index is good, power capacity is big, but because the isolation of itself is limited, high-power bilateral amplifier is because power output is bigger, some signal turns back to receiving unit during emission, be easy to form loop and disturb, thereby influence transmitting-receiving effect can cause low noise amplifier to damage.
Summary of the invention
The purpose of this utility model is to overcome above-mentioned deficiency, provides a kind of effective raising to isolate, and reduces and disturbs, and guarantees the two-way amplifier transmitting-receiving commutation circuit of signal of communication quality.
The utility model is achieved in that a kind of two-way amplifier transmitting-receiving commutation circuit, comprise detecting circuit, coupler, diverter switch, emission amplifier, reception amplifier, receiving key, circulator and antenna, described detecting circuit, coupler, diverter switch, emission amplifier, circulator, antenna connects to form radiating circuit successively, described antenna, circulator, receiving key, reception amplifier, diverter switch, coupler connects to form receiving circuit successively, it is characterized in that, also comprise PIN pipe and control circuit thereof, one end ground connection of described PIN pipe, the other end is connected between receiving key and the circulator, described control circuit is made up of applied voltage and inductance and electric capacity, the operating state of described PIN pipe is controlled by applied voltage, when the applied voltage high level, the PIN pipe ends, to not influence of receiving circuit, when the applied voltage low level, PIN manages conducting, receives signal and manages ground by PIN.
Further, described diverter switch is single-pole double-throw switch (SPDT).
Further, describedly penetrate amplifier and reception amplifier is respectively two.
Further, be equipped with capacitance between described coupler, diverter switch, emission amplifier, reception amplifier, the circulator electric component adjacent one another are.
Further, described receiving key is single-pole double-throw switch (SPDT).
The beneficial effects of the utility model show as:
1; single-pole double-throw switch (SPDT) adopts existing linear high power integrated switch in the utility model; play the effect of commutation circuit; when emission amplifier is the power amplifier working time slot; making the power output of power amplifier lead to transmitting antenna by circulator gets on; when reception amplifier is the low noise amplifier working time slot; single-pole double-throw switch (SPDT) switches to low noise amplifier; the small-signal of antenna input is directly amplified by low noise amplifier; like this; both protected the low noise amplifier circuit of small-signal; can not cause power output to cause extra distortion because of the problem of switch power capacity again, and greatly reduce the loss of power.
2, the utility model has been owing to adopted the single-pole double-throw switch (SPDT) of high-isolation at the input of reception amplifier, successfully avoided power amplifier output power to leak into that low noise amplifier gets input and the damage of the low noise amplifier that causes.
3, the utility model is introduced the PIN pipe, when not reaching desirable requirement owing to the antenna standing wave, some signal reflex is returned during emission, reflect the signal overwhelming majority and manage ground by PIN, have only minimum part to enter receiving loop, just improve the interference to loop, guaranteed the signal of communication quality.
Description of drawings
Fig. 1 is the structural representation of the two-way amplifier transmitting-receiving commutation circuit of the utility model embodiment.
Embodiment
Be described further below in conjunction with 1 pair of the utility model of accompanying drawing.
Embodiment: the utility model proposes a kind of two-way amplifier transmitting-receiving commutation circuit, comprise detecting circuit, coupler COUP, diverter switch SWITCH1, send amplifier AMP, accept amplifier LNA, receiving key SWITCH2, circulator CIR and antenna ANT, described detecting circuit, coupler COUP, diverter switch SWITCH1, emission amplifier AMP, circulator CIR, antenna ANT connects to form radiating circuit successively, described antenna ANT, circulator CIR, receiving key SWITCH2, reception amplifier LNA, diverter switch SWITCH1, coupler COUP connects to form receiving circuit successively, it is characterized in that, also comprise PIN pipe and control circuit, one end ground connection of described PIN pipe, the other end is connected between receiving key SWITCH2 and the circulator CIR, described control circuit is made up of applied voltage Va and inductance L 1 and capacitor C 10, the operating state of described control circuit control PIN pipe, as applied voltage high level (20V), the PIN pipe ends, to receiving not influence of path, when the applied voltage low level (5V), PIN manages conducting, receives signal and manages ground by PIN.
Further, described diverter switch SWITCH1 is single-pole double-throw switch (SPDT).
Further, describedly send amplifier AMP and accept amplifier LNA and be respectively two.
Further, described coupler COUP, diverter switch SWITCH1, send amplifier AMP, accept amplifier LNA, be equipped with capacitance between the electric component that circulator CIR is adjacent one another are.
Further, described receiving key SWITCH2 is single-pole double-throw switch (SPDT).
Single-pole double-throw switch (SPDT) adopts existing linear high power integrated switch in the utility model, plays the effect of commutation circuit, when emission amplifier AMP is the power amplifier working time slot, diverter switch SWITCH1 switches to transmitting chain, transmits to send the back main path successively by coupler COUP by port PO RT1, capacitor C 1, diverter switch SWITCH1, capacitor C 2 is sent amplifier AMP1, capacitor C 3, send amplifier AMP2, capacitor C 4, circulator CIR sends by transmitting antenna ANT at last; When reception amplifier is the low noise amplifier working time slot; single-pole double-throw switch (SPDT) switches to low noise amplifier; the main path that receives signal is successively by antenna ANT; circulator CIR, capacitor C 8, receiving key SWITCH2; capacitor C 7; reception amplifier LNA1, capacitor C 6, reception amplifier LNA2; capacitor C 5; diverter switch SWITCH1, capacitor C 1, coupler COUP; last entry port PORT; so both protected the low noise amplifier circuit of small-signal, and can not cause power output to cause extra distortion because of the problem of switch power capacity again, and greatly reduce the loss of power.
In emission process, do not reach desirable requirement owing to the antenna standing wave, isolation owing to circulator itself during emission is limited, high-power bilateral amplifier is because power output is bigger, and some signal turns back to receiving unit during emission, and the PIN of control circuit control at this moment manages conducting, the PIN pipe forms low impedance state, the signal overwhelming majority that reflects inserts ground by the PIN route of pipe line, and fraction has improved isolation like this by receiving key SWITCH2, reduce and disturb, guarantee the signal of communication quality.
Certainly; the utility model also can have other embodiment; under the situation that does not deviate from the utility model spirit and essence thereof; the person of ordinary skill in the field works as can make various corresponding changes and distortion according to the utility model, but these corresponding changes and distortion all should belong to protection range of the present utility model.
Claims (5)
1. a two-way amplifier is received and dispatched commutation circuit, comprise detecting circuit, coupler, diverter switch, emission amplifier, reception amplifier, receiving key, circulator and antenna, described detecting circuit, coupler, diverter switch, emission amplifier, circulator, antenna connects to form radiating circuit successively, described antenna, circulator, receiving key, reception amplifier, diverter switch, coupler connects to form receiving circuit successively, it is characterized in that, also comprise PIN pipe and control circuit thereof, one end ground connection of described PIN pipe, the other end is connected between receiving key and the circulator, described control circuit is made up of applied voltage and inductance and electric capacity, and the operating state of described PIN pipe is controlled by applied voltage.
2. a kind of two-way amplifier transmitting-receiving commutation circuit according to claim 1 is characterized in that, is equipped with capacitance between described coupler, diverter switch, emission amplifier, reception amplifier, the circulator electric component adjacent one another are.
3. a kind of two-way amplifier transmitting-receiving commutation circuit according to claim 1 and 2 is characterized in that described diverter switch is single-pole double-throw switch (SPDT).
4. a kind of two-way amplifier transmitting-receiving commutation circuit according to claim 1 and 2 is characterized in that described receiving key is single-pole double-throw switch (SPDT).
5. a kind of two-way amplifier transmitting-receiving commutation circuit according to claim 1 is characterized in that, describedly penetrates amplifier and reception amplifier is respectively two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320044405 CN203057147U (en) | 2013-01-28 | 2013-01-28 | Transmit-receive commutation circuit of bilateral amplifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320044405 CN203057147U (en) | 2013-01-28 | 2013-01-28 | Transmit-receive commutation circuit of bilateral amplifier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203057147U true CN203057147U (en) | 2013-07-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320044405 Expired - Lifetime CN203057147U (en) | 2013-01-28 | 2013-01-28 | Transmit-receive commutation circuit of bilateral amplifier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203057147U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105306033A (en) * | 2015-10-22 | 2016-02-03 | 中国船舶重工集团公司第七二四研究所 | Microwave integrated module of PIN transmit-receive switch and limiter |
| 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 |
| CN106788484A (en) * | 2016-11-16 | 2017-05-31 | 力同科技股份有限公司 | A kind of power amplifier |
| CN107809803A (en) * | 2017-10-26 | 2018-03-16 | 电信科学技术第四研究所有限公司 | Multiple frequency bands broadband wireless access system and method |
| CN109873657A (en) * | 2019-03-14 | 2019-06-11 | 普联技术有限公司 | Two hair two of one kind receives duplex communication RF front-end circuit |
-
2013
- 2013-01-28 CN CN 201320044405 patent/CN203057147U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105306033A (en) * | 2015-10-22 | 2016-02-03 | 中国船舶重工集团公司第七二四研究所 | Microwave integrated module of PIN transmit-receive switch and limiter |
| CN105306033B (en) * | 2015-10-22 | 2018-06-29 | 中国船舶重工集团公司第七二四研究所 | A kind of microwave integration module of PIN transmit-receive switches and limiter |
| 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 |
| CN106788484A (en) * | 2016-11-16 | 2017-05-31 | 力同科技股份有限公司 | A kind of power amplifier |
| CN107809803A (en) * | 2017-10-26 | 2018-03-16 | 电信科学技术第四研究所有限公司 | Multiple frequency bands broadband wireless access system and method |
| CN109873657A (en) * | 2019-03-14 | 2019-06-11 | 普联技术有限公司 | Two hair two of one kind receives duplex communication RF front-end circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 100070 Beijing city Fengtai District Haiying Road No. 1 Building No. 3 hospital 2 Patentee after: BEIJING AOFENGYUAN TECHNOLOGY CO.,LTD. Address before: 100070 Beijing city Fengtai District Haiying Road No. 1 Building No. 3 hospital 2 Patentee before: BEIJING ALL FORTUNE SCIENCE & TECHNOLOGY DEVELOPMENT Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130710 |
|
| CX01 | Expiry of patent term |