CN114584119A - Wireless communication system receiving and transmitting switch circuit with power-off protection - Google Patents
Wireless communication system receiving and transmitting switch circuit with power-off protection Download PDFInfo
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- CN114584119A CN114584119A CN202210213510.1A CN202210213510A CN114584119A CN 114584119 A CN114584119 A CN 114584119A CN 202210213510 A CN202210213510 A CN 202210213510A CN 114584119 A CN114584119 A CN 114584119A
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/08—Modifications for protecting switching circuit against overcurrent or overvoltage
- H03K17/081—Modifications for protecting switching circuit against overcurrent or overvoltage without feedback from the output circuit to the control circuit
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
- H03K17/74—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of diodes
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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
- 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
- H04B1/44—Transmit/receive switching
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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- Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
Abstract
A wireless communication system receiving and transmitting switch circuit with power-off protection. Relate to radio communication technical field, especially relate to a wireless communication system receiving and dispatching switch circuit's protection technical field. The wireless communication system has a control system that outputs a control signal R and a control signal T; the radio frequency connector XS1 is used for connecting a power amplifier of a wireless communication system, the radio frequency connector XS2 is used for connecting an antenna feeder system, and the radio frequency connector XS3 is used for connecting a receiver; a signal transmitting switch circuit is arranged between the radio frequency connectors XS1 and XS2, and a signal receiving switch circuit is arranged between the radio frequency connectors XS2 and XS 3. The invention can block the signal from the antenna feeder system to the receiving and transmitting switch in the power-off state without unscrewing the feeder line, thereby protecting the wireless communication system, improving the reliability of the wireless communication system, ensuring the service life of the connector assembly and saving the operation time of a user.
Description
Technical Field
The invention relates to the technical field of radio communication, in particular to the technical field of protection of a receiving and transmitting switch circuit of a wireless communication system.
Background
A transceiver switch of a wireless communication system, sometimes referred to as an "antenna switch", is usually connected to an output terminal of a power amplifier, and is directly connected to an antenna feeder system through a radio frequency connector of an antenna port of the wireless communication system, which is a key component responsible for switching a transceiver link of the wireless communication system. In general, a circuit of a transceiver switch of a wireless communication system is composed of two groups of power PIN diodes (see fig. 2 for a schematic diagram of a conventional transceiver switch), and after the wireless communication system is powered on to work, the transceiver switch can passively switch a working link (receiving or transmitting) according to a logic level of transceiving, so that the transceiver switch has the advantages of low insertion loss, high isolation, fast switching time, wide working frequency band and the like, is widely applied to radio frequency and microwave communication, and has a huge influence on the communication system once the transceiver switch is damaged. However, the core device of the transceiving switch circuit shown in fig. 2 is a power PIN diode, and due to the existence of the intrinsic layer, the on/off of the PIN diode is determined by the magnitude of the current passing through the PIN diode, so that the key characteristic is only achieved in the power-on state, and in the power-off state, the relevant characteristic cannot be represented, and particularly, the power capacity is greatly reduced. At this time, if a strong signal (such as a near field radar irradiation signal) exceeding the power capacity flows into the transceiving switch from the antenna through the feeder line, the PIN diode is easily burnt, once the PIN diode is damaged, the wireless communication system cannot realize a normal transceiving switching function, the impedance of an amplifying circuit in an internal power amplification component can be seriously mismatched (signal reflection) to cause the damage of a power tube, and the fault has a great influence on the whole communication system. In order to avoid the faults, a user can only unscrew the feeder line and then cut off the power of the wireless communication system, and the user needs to electrify the feeder line and then unscrew the feeder line when using the wireless communication system, so that the use mode wastes time and is inconvenient, and the service life of the connector assembly can be shortened by frequently disassembling the feeder line.
Disclosure of Invention
Aiming at the technical problems, the invention provides the transceiver switch circuit with the power-off protection function of the wireless communication system, which can effectively protect the transceiver switch circuit under the power-off condition and further simplify the existing use flow.
The technical scheme of the invention is as follows: the wireless communication system has a control system that outputs a control signal R and a control signal T;
the antenna feed system comprises radio frequency connectors XS1, XS2 and XS3, wherein the radio frequency connectors XS1 are used for connecting a power amplifier of a wireless communication system, the radio frequency connectors XS2 are used for connecting an antenna feed system, and the radio frequency connectors XS3 are used for connecting a receiver; a signal transmitting switch circuit is arranged between the radio frequency connectors XS1 and XS2, and a signal receiving switch circuit is arranged between the radio frequency connectors XS2 and XS 3;
the radio frequency power relay system is characterized IN that a radio frequency power relay S1 is arranged at the rear end of the radio frequency connector XS2, the radio frequency power relay S1 comprises a radio frequency input port IN, a radio frequency output port OUT, a driving voltage positive electrode interface and a driving voltage negative electrode interface, the radio frequency output port OUT is connected with the antenna feed system, the radio frequency input port IN is connected with the signal transmitting switch circuit and the signal receiving switch circuit, the driving voltage positive electrode interface is connected with a power supply, and the driving voltage negative electrode interface is grounded.
A low-power consumption circuit is also arranged between the power supply and the radio frequency power relay S1, the low-power consumption circuit comprises a capacitor C14, a capacitor C15, a resistor R5, a voltage stabilizing diode V7 and a field effect tube V8,
the capacitor C14 and the capacitor C15 are connected in parallel at the rear end of a power supply, the other end of the capacitor C14 is grounded, the other end of the capacitor C15 is connected in parallel with the resistor R5, the cathode of the voltage stabilizing diode V7 and the gate of the field effect transistor V8, and then the other end of the resistor R5, the anode of the voltage stabilizing diode V7 and the source of the field effect transistor V8 are connected in parallel and grounded;
and the drain electrode of the field effect transistor V8 is connected with the driving voltage negative electrode interface and is grounded.
And a voltage division resistor R7 is also arranged between the driving voltage negative electrode interface and the grounding point.
And a protection diode V9 is connected in parallel between the driving voltage positive electrode interface and the driving voltage negative electrode interface, and the anode of the protection diode V9 is connected with the driving voltage negative electrode interface while the cathode is connected with the driving voltage positive electrode interface.
The signal emission switch circuit comprises decoupling capacitors C1, C2, C3 and C4, current-limiting resistors R1 and R2, choke inductors L1, L2 and L5, coupling capacitors C9, C10 and C13, and PIN diodes V1 and V2;
one end of the decoupling capacitor C1 and one end of the current-limiting resistor R1 are connected with the control signal R together, and the other end of the decoupling capacitor C1 is grounded; the other end of the current-limiting resistor R1 is connected in parallel with a decoupling capacitor C2 and a choke inductor L1, the other end of the decoupling capacitor C2 is grounded, the other end of the choke inductor L1 is connected in parallel with the coupling capacitors C9, C10 and the cathode of a PIN diode V1,
the other end of the coupling capacitor C9 is connected with the radio frequency connector XS1, and the anode of the PIN diode V1 is grounded;
one end of the decoupling capacitor C4 and one end of the current-limiting resistor R2 are connected with the control signal T, and the other end of the decoupling capacitor C4 is connected with the choke inductor L5 and is grounded; the other end of the current-limiting resistor R2 is connected in parallel with the decoupling capacitor C3 and a choke inductor L2, the other end of the decoupling capacitor C3 is grounded, the other end of the choke inductor L2 is connected with the other end of the coupling capacitor C10, and the other end of the choke inductor L2 is also connected with the cathode of the PIN diode V2;
the other end of the choke inductor L5 is connected to the anode of the PIN diode V2 and the coupling capacitor C13, and the other end of the coupling capacitor C13 is connected to the radio frequency input port IN.
The signal receiving switch circuit comprises decoupling capacitors C5, C6, C7 and C8, current-limiting resistors R3 and R4, choke inductors L3 and L4, coupling capacitors C12 and C11, a PIN diode V3 and a PIN diode group;
one end of the decoupling capacitor C6 and one end of the current-limiting resistor R3 are connected with the control signal R together, and the other end of the decoupling capacitor C6 is grounded; the other end of the current-limiting resistor R3 is connected in parallel with a decoupling capacitor C5 and a choke inductor L4, the other end of the decoupling capacitor C5 is grounded, the other end of the choke inductor L4 is connected in parallel with the cathode of the PIN diode V3 and the coupling capacitor C12, and the anode of the PIN diode V3 is connected with the anode of the PIN diode V2;
the other end of the coupling capacitor C12 is connected with the cathode of the PIN diode group, one end of a choke inductor L3 and one end of a coupling capacitor C11; the anode of the PIN diode group is grounded, the other end of the choke inductor L3 is connected with one end of the decoupling capacitor C7 and the current-limiting resistor R4, the other end of the decoupling capacitor C7 is grounded, the other end of the current-limiting resistor R4 is connected with the coupling capacitor C8 and the control signal T, and the other end of the coupling capacitor C8 is grounded;
the other end of the coupling capacitor C11 is connected to the radio frequency connector XS 3.
The PIN diode group is provided with at least two PIN diodes which are connected in parallel.
The invention has the technical effects that:
the invention provides a wireless communication system transceiving switch circuit system with power-off protection. The radio frequency relay is switched on and off, so that the transceiver switch can realize a normal transceiving switching function under the condition of power-on, and can be reliably disconnected from the antenna feeder system under the condition of power-off.
In the prior art, a user needs to adopt a mode of frequently disassembling a feeder to solve the problem that an aerial strong signal is 'poured' into an antenna switch under the condition of power failure of a wireless communication system to cause that an internal switch element (PIN diode) is burnt, an amplifying circuit in a power amplifier assembly is electrified and cannot normally work, and even a power tube is damaged due to serious mismatch. The invention can block the signal from the antenna feeder system to the receiving and transmitting switch in the power-off state without unscrewing the feeder line, thereby protecting the wireless communication system, improving the reliability of the wireless communication system, ensuring the service life of the connector assembly and saving the operation time of a user.
Drawings
Figure 1 is a circuit diagram of the present invention,
fig. 2 is a circuit diagram of the prior art of the present invention.
IN the figure, 1 is a radio frequency input port IN, 2 is a radio frequency output port OUT, 3 is a driving voltage positive electrode interface, and 4 is a driving voltage negative electrode interface.
Detailed Description
The technical scheme of the invention is as shown in figure 1, a wireless communication system is provided with a control system, and the control system outputs a control signal R and a control signal T;
the antenna feed system comprises radio frequency connectors XS1, XS2 and XS3, wherein the radio frequency connectors XS1 are used for connecting a power amplifier of a wireless communication system, the radio frequency connectors XS2 are used for connecting an antenna feed system, and the radio frequency connectors XS3 are used for connecting a receiver; a signal transmitting switch circuit is arranged between the radio frequency connectors XS1 and XS2, and a signal receiving switch circuit is arranged between the radio frequency connectors XS2 and the radio frequency connectors XS 3;
the rear end of the radio frequency connector XS2 is provided with a radio frequency power relay S1, the radio frequency power relay S1 comprises a radio frequency input port IN, a radio frequency output port OUT, a driving voltage positive electrode interface and a driving voltage negative electrode interface (1-4 pins IN the figure), the radio frequency output port OUT is connected with the antenna feed system, the radio frequency input port IN is connected with the signal transmitting switch circuit and the signal receiving switch circuit, the driving voltage positive electrode interface is connected with a power supply, and the driving voltage negative electrode interface is grounded.
A relay with a power-off protection function is inserted between the receiving and transmitting switch circuit and the antenna feed system, and under the condition that a power supply is powered off, the relay S1 is in a disconnected state, so that a physical isolation state is formed, and a strong signal is prevented from entering the receiving and transmitting switch circuit through the antenna feed system to damage components.
The rf power relay S1 may be a high power capacity class power relay. To accommodate the reliable passage of strong signals.
A low-power consumption circuit is also arranged between the power supply and the radio frequency power relay S1, the low-power consumption circuit comprises a capacitor C14, a capacitor C15, a resistor R5, a voltage stabilizing diode V7 and a field effect tube V8,
a capacitor C14 and a capacitor C15 are connected in parallel at the rear end of the power supply (at the front part of the positive electrode interface of the driving voltage), the other end of the capacitor C14 is grounded (as a decoupling capacitor), the other end of the capacitor C15 is connected in parallel with a resistor R5, the cathode of a voltage stabilizing diode V7 and the gate of a field effect transistor V8, and then the other end of the resistor R5, the anode of the voltage stabilizing diode V7 and the source of the field effect transistor V8 are connected in parallel and grounded;
the drain electrode of the field effect transistor V8 is connected with the negative electrode interface of the driving voltage and is grounded.
In the low power consumption circuit, R5 and C15 constitute a delay circuit (time constant τ = R5 × C15). After the wireless communication system is powered on, the field effect transistor V8 is switched on, at the moment, the R7 does not participate in voltage division, the voltage of pins 3 and 4 of the power relay S1 is Vcc, S1 is reliably closed, and a radio frequency link is switched on;
and a voltage dividing resistor R7 is also arranged between the driving voltage negative electrode interface and the grounding point. After tau time, the field effect transistor V8 is switched off, at the moment, R7 participates in voltage division, the working current of the relay is reduced, and the proper R7 resistance value is selected to enable the voltage of the pins 3 and 4 of the power relay S1 to be slightly larger than the switching-off voltage of the power relay S1, so that the on-state power consumption of the relay is effectively reduced under the condition that few peripheral devices are used, and the service life of the relay is prolonged.
And a protection diode V9 is connected in parallel between the driving voltage positive interface and the driving voltage negative interface, the anode of the protection diode V9 is connected with the driving voltage negative interface, and the cathode of the protection diode V9 is connected with the driving voltage positive interface.
The signal emission switch circuit comprises decoupling capacitors C1, C2, C3 and C4, current-limiting resistors R1 and R2, choke inductors L1, L2 and L5, coupling capacitors C9, C10 and C13, and PIN diodes V1 and V2;
one end of the decoupling capacitor C1 and one end of the current-limiting resistor R1 are connected with the control signal R together, and the other end of the decoupling capacitor C1 is grounded; the other end of the current-limiting resistor R1 is connected in parallel with a decoupling capacitor C2 and a choke inductor L1, the other end of the decoupling capacitor C2 is grounded, the other end of the choke inductor L1 is connected in parallel with coupling capacitors C9, C10 and the cathode of a PIN diode V1,
the other end of the coupling capacitor C9 is connected with a radio frequency connector XS1, and the anode of the PIN diode V1 is grounded;
one end of the decoupling capacitor C4 and one end of the current-limiting resistor R2 are connected with the control signal T, and the other end of the decoupling capacitor C4 is connected with the choke inductor L5 and is grounded; the other end of the current-limiting resistor R2 is connected in parallel with a decoupling capacitor C3 and a choke inductor L2, the other end of the decoupling capacitor C3 is grounded, the other end of the choke inductor L2 is connected with the other end of a coupling capacitor C10, and the other end of the choke inductor L2 is also connected with the cathode of a PIN diode V2;
the other end of the choke inductor L5 is connected to the anode of the PIN diode V2 and the coupling capacitor C13, and the other end of the coupling capacitor C13 is connected to the radio frequency input port IN.
The signal receiving switch circuit comprises decoupling capacitors C5, C6, C7 and C8, current-limiting resistors R3 and R4, choke inductors L3 and L4, coupling capacitors C12 and C11, a PIN diode V3 and a PIN diode group;
one end of the decoupling capacitor C6 and one end of the current-limiting resistor R3 are connected with the control signal R together, and the other end of the decoupling capacitor C6 is grounded; the other end of the current-limiting resistor R3 is connected with a decoupling capacitor C5 and a choke inductor L4 in parallel, the other end of the decoupling capacitor C5 is grounded, the other end of the choke inductor L4 is connected with the cathode of a PIN diode V3 and the coupling capacitor C12 in parallel, and the anode of the PIN diode V3 is connected with the anode of the PIN diode V2;
the other end of the coupling capacitor C12 is connected with the cathode of the PIN diode group, one end of the choke inductor L3 and one end of the coupling capacitor C11; the anode of the PIN diode group is grounded, the other end of the choke inductor L3 is connected with one end of a decoupling capacitor C7 and a current-limiting resistor R4, the other end of the decoupling capacitor C7 is grounded, the other end of the current-limiting resistor R4 is connected with a coupling capacitor C8 and a control signal T, and the other end of the coupling capacitor C8 is grounded;
the other end of the coupling capacitor C11 is connected to the rf connector XS 3.
In the signal transmitting state, V2 and PIN groups are turned on, and V1 and V3 are turned off. The emission signal goes from XS1 to XS 2.
In the signal receiving state, V1 and V3 are on, and V2 and the PIN group are off. The received signals are from XS2 to XS 3.
The PIN diode group is provided with at least two PIN diodes which are connected in parallel.
The transceiving switch passively switches transceiving paths according to the logic of R and T (see Table 1). The radio frequency power relay has the characteristics of low insertion loss, low standing wave ratio, high isolation and the like, so that the radio frequency power relay has little influence on signals passing through the radio frequency power relay; when the wireless communication system is powered off, the relay S1 disconnects the radio frequency link in a high isolation mode, blocks signals received from the antenna feeder system at the moment, and achieves a physical power-off protection function.
Table 1:
| R | T | power supply (Vcc) | On-off state |
| Low voltage (negative) | High voltage (positive) | Powering on | Harvesting state |
| High voltage (positive) | Low voltage (negative) | Powering up | Hair style |
| × | × | Power off | Disconnect |
Claims (7)
1. A wireless communication system receiving and dispatching switch circuit with power-off protection is disclosed, wherein the communication system is provided with a control system, and the control system outputs a control signal R and a control signal T;
the radio frequency antenna feeder comprises radio frequency connectors XS1, XS2 and XS3, wherein the radio frequency connectors XS1 are used for being connected with a power amplifier of a wireless communication system, the radio frequency connectors XS2 are used for being connected with an antenna feeder system, and the radio frequency connectors XS3 are used for being connected with a receiver; a signal transmitting switch circuit is arranged between the radio frequency connectors XS1 and XS2, and a signal receiving switch circuit is arranged between the radio frequency connectors XS2 and XS 3;
the radio frequency power relay is characterized IN that a radio frequency power relay S1 is arranged at the rear end of the radio frequency connector XS2, the radio frequency power relay S1 comprises a radio frequency input port IN, a radio frequency output port OUT, a driving voltage positive interface and a driving voltage negative interface, the radio frequency output port OUT is connected with the antenna feed system, the radio frequency input port IN is connected with the signal transmitting switch circuit and the signal receiving switch circuit, the driving voltage positive interface is connected with a power supply, and the driving voltage negative interface is grounded.
2. The transceiving switch circuit of claim 1, wherein a low power consumption circuit is further disposed between the power supply and the RF power relay S1, the low power consumption circuit comprises a capacitor C14, a capacitor C15, a resistor R5, a Zener diode V7, and a FET V8,
the capacitor C14 and the capacitor C15 are connected in parallel at the rear end of a power supply, the other end of the capacitor C14 is grounded, the other end of the capacitor C15 is connected in parallel with the resistor R5, the cathode of the voltage stabilizing diode V7 and the gate of the field effect transistor V8, and then the other end of the resistor R5, the anode of the voltage stabilizing diode V7 and the source of the field effect transistor V8 are connected in parallel and grounded;
and the drain electrode of the field effect transistor V8 is connected with the driving voltage negative electrode interface and is grounded.
3. The transceiving switch circuit of claim 2, wherein a voltage dividing resistor R7 is further disposed between the negative driving voltage interface and the ground point.
4. The switch circuit of claim 2, wherein a protection diode V9 is connected in parallel between the positive interface and the negative interface of the driving voltage, and an anode of the protection diode V9 is connected to the negative interface and a cathode of the protection diode V9 is connected to the positive interface of the driving voltage.
5. The transceiving switch circuit of claim 1, wherein the signal transmitting switch circuit comprises decoupling capacitors C1, C2, C3, C4, current limiting resistors R1, R2, choke inductors L1, L2, L5, coupling capacitors C9, C10, C13, and PIN diodes V1, V2;
one end of the decoupling capacitor C1 and one end of the current-limiting resistor R1 are connected with the control signal R together, and the other end of the decoupling capacitor C1 is grounded; the other end of the current-limiting resistor R1 is connected in parallel with a decoupling capacitor C2 and a choke inductor L1, the other end of the decoupling capacitor C2 is grounded, the other end of the choke inductor L1 is connected in parallel with the coupling capacitors C9, C10 and the cathode of a PIN diode V1,
the other end of the coupling capacitor C9 is connected with the radio frequency connector XS1, and the anode of the PIN diode V1 is grounded;
one end of the decoupling capacitor C4 and one end of the current-limiting resistor R2 are connected with the control signal T, and the other end of the decoupling capacitor C4 is connected with the choke inductor L5 and is grounded; the other end of the current-limiting resistor R2 is connected in parallel with the decoupling capacitor C3 and a choke inductor L2, the other end of the decoupling capacitor C3 is grounded, the other end of the choke inductor L2 is connected with the other end of the coupling capacitor C10, and the other end of the choke inductor L2 is also connected with the cathode of the PIN diode V2;
the other end of the choke inductor L5 is connected to the anode of the PIN diode V2 and the coupling capacitor C13, and the other end of the coupling capacitor C13 is connected to the radio frequency input port IN.
6. The transceiving switch circuit of claim 5, wherein the signal receiving switch circuit comprises decoupling capacitors C5, C6, C7 and C8, current limiting resistors R3 and R4, choke inductors L3 and L4, coupling capacitors C12 and C11, a PIN diode V3 and a PIN diode group;
one end of the decoupling capacitor C6 and one end of the current-limiting resistor R3 are connected with the control signal R together, and the other end of the decoupling capacitor C6 is grounded; the other end of the current-limiting resistor R3 is connected in parallel with a decoupling capacitor C5 and a choke inductor L4, the other end of the decoupling capacitor C5 is grounded, the other end of the choke inductor L4 is connected in parallel with the cathode of the PIN diode V3 and the coupling capacitor C12, and the anode of the PIN diode V3 is connected with the anode of the PIN diode V2;
the other end of the coupling capacitor C12 is connected with the cathode of the PIN diode group, one end of a choke inductor L3 and one end of a coupling capacitor C11; the anode of the PIN diode group is grounded, the other end of the choke inductor L3 is connected with one end of the decoupling capacitor C7 and the current-limiting resistor R4, the other end of the decoupling capacitor C7 is grounded, the other end of the current-limiting resistor R4 is connected with the coupling capacitor C8 and the control signal T, and the other end of the coupling capacitor C8 is grounded;
the other end of the coupling capacitor C11 is connected to the radio frequency connector XS 3.
7. The switch circuit of claim 6, wherein the PIN diode group comprises at least two PIN diodes connected in parallel.
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| CN202210213510.1A CN114584119B (en) | 2022-03-04 | 2022-03-04 | Wireless communication system receiving and transmitting switch circuit with power-off protection |
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| CN202210213510.1A CN114584119B (en) | 2022-03-04 | 2022-03-04 | Wireless communication system receiving and transmitting switch circuit with power-off protection |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117674893A (en) * | 2023-11-28 | 2024-03-08 | 博瑞集信(西安)电子科技股份有限公司 | Single-pole double-throw switch circuit with power-off protection function |
Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005015761A1 (en) * | 2003-08-08 | 2005-02-17 | Motorola Inc | Antenna switch circuit |
| US20050146392A1 (en) * | 2002-03-22 | 2005-07-07 | Telefonaktiebolaget Lm Erricsson (Publ) | Transmit receive switch with high power protection |
| JP2006352266A (en) * | 2005-06-13 | 2006-12-28 | Fujitsu Ten Ltd | Switching circuit employing pin diode, diversity antenna switching circuit using it, and automatic gain control amplifier |
| US20070049225A1 (en) * | 2005-08-23 | 2007-03-01 | Samsung Electronics Co., Ltd. | Apparatus for protecting receiver circuit in time division duplexing wireless communication system |
| US8175546B1 (en) * | 2009-09-14 | 2012-05-08 | Pds Electronics, Inc. | Receive antenna interface for an RF transceiver |
| CN203519823U (en) * | 2013-10-28 | 2014-04-02 | 武汉大学 | High-power shortwave broadband transmit-receive switch |
| CN103907289A (en) * | 2011-11-11 | 2014-07-02 | 苹果公司 | Systems and methods for protecting micro electromechanical systems switches from radio-frequency signals by using switching circuitry |
| 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 |
| US20160242113A1 (en) * | 2015-02-12 | 2016-08-18 | Harris Corporation | Power saving transceiver switch configuration |
| CN106058794A (en) * | 2016-06-22 | 2016-10-26 | 成都国星通信有限公司 | Circuit and method for automatically protecting short circuit of antenna |
| WO2017028510A1 (en) * | 2015-08-18 | 2017-02-23 | 中兴通讯股份有限公司 | Radio frequency switch circuit and radio frequency link |
| CN211061681U (en) * | 2019-11-19 | 2020-07-21 | 四川华讯新科科技有限公司 | Radar receiving and dispatching conversion switch controller of unmanned aerial vehicle anti-braking system |
| CN111708307A (en) * | 2020-06-30 | 2020-09-25 | 深圳数联天下智能科技有限公司 | Transmit-receive control circuit of wireless communication module |
| CN113162703A (en) * | 2021-04-27 | 2021-07-23 | 无锡宇宁智能科技有限公司 | Wireless transmitting and receiving power monitoring circuit and mobile terminal with wireless communication circuit |
-
2022
- 2022-03-04 CN CN202210213510.1A patent/CN114584119B/en active Active
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050146392A1 (en) * | 2002-03-22 | 2005-07-07 | Telefonaktiebolaget Lm Erricsson (Publ) | Transmit receive switch with high power protection |
| WO2005015761A1 (en) * | 2003-08-08 | 2005-02-17 | Motorola Inc | Antenna switch circuit |
| JP2006352266A (en) * | 2005-06-13 | 2006-12-28 | Fujitsu Ten Ltd | Switching circuit employing pin diode, diversity antenna switching circuit using it, and automatic gain control amplifier |
| US20070049225A1 (en) * | 2005-08-23 | 2007-03-01 | Samsung Electronics Co., Ltd. | Apparatus for protecting receiver circuit in time division duplexing wireless communication system |
| US8175546B1 (en) * | 2009-09-14 | 2012-05-08 | Pds Electronics, Inc. | Receive antenna interface for an RF transceiver |
| CN103907289A (en) * | 2011-11-11 | 2014-07-02 | 苹果公司 | Systems and methods for protecting micro electromechanical systems switches from radio-frequency signals by using switching circuitry |
| CN203519823U (en) * | 2013-10-28 | 2014-04-02 | 武汉大学 | High-power shortwave broadband transmit-receive switch |
| US20160242113A1 (en) * | 2015-02-12 | 2016-08-18 | Harris Corporation | Power saving transceiver switch configuration |
| WO2017028510A1 (en) * | 2015-08-18 | 2017-02-23 | 中兴通讯股份有限公司 | Radio frequency switch circuit and radio frequency link |
| 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 |
| CN106058794A (en) * | 2016-06-22 | 2016-10-26 | 成都国星通信有限公司 | Circuit and method for automatically protecting short circuit of antenna |
| CN211061681U (en) * | 2019-11-19 | 2020-07-21 | 四川华讯新科科技有限公司 | Radar receiving and dispatching conversion switch controller of unmanned aerial vehicle anti-braking system |
| CN111708307A (en) * | 2020-06-30 | 2020-09-25 | 深圳数联天下智能科技有限公司 | Transmit-receive control circuit of wireless communication module |
| CN113162703A (en) * | 2021-04-27 | 2021-07-23 | 无锡宇宁智能科技有限公司 | Wireless transmitting and receiving power monitoring circuit and mobile terminal with wireless communication circuit |
Non-Patent Citations (2)
| Title |
|---|
| WEN CHENG LAI等: ""Design of A 1.5-V 3-5 GHz CMOS Low-Voltage Transformer-Based Low Noise Amplifier with TR Switch for Computational Intelligence Applications"", 《2016 9TH INTERNATIONAL SYMPOSIUM ON COMPUTATIONAL INTELLIGENCE AND DESIGN (ISCID)》 * |
| 王枫: ""UHF频段无线收发模块的设计与实现"", 《中国优秀硕士学位论文全文数据库•信息科技辑》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117674893A (en) * | 2023-11-28 | 2024-03-08 | 博瑞集信(西安)电子科技股份有限公司 | Single-pole double-throw switch circuit with power-off protection function |
| CN117674893B (en) * | 2023-11-28 | 2024-05-17 | 博瑞集信(西安)电子科技股份有限公司 | Single-pole double-throw switch circuit with power-off protection function |
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