A combiner and bypass switch circuit thereof

Abstract

The present application discloses a combiner and a bypass switch circuit thereof, wherein the bypass switch circuit at least includes a first switch circuit, a first control circuit, a second switch circuit, and a second control circuit, wherein the first switch circuit is coupled to the second switch circuit, the first control circuit is coupled to the first switch circuit, and receives a first control signal, and controls the first switch circuit to be turned on or off according to the first control signal; the second control circuit is coupled to the second switch circuit, and receives a second control signal, and controls the second switch circuit to be turned on or off according to the second control signal. The present application controls the first switch circuit and the second switch circuit to be turned on or off respectively through the first control circuit and the second control circuit, and does not require an additional modem to demodulate and modulate the signals of the first switch circuit and the second switch circuit, thereby reducing costs.

Description

Technical Field

[0001] The present application relates to the field of communications, and in particular to a combiner and a bypass switch circuit thereof. Background Art

[0002] In the 5G (5th-Generation, fifth-generation mobile communication technology) multi-band combiner application, the base station system needs to bypass the combiner to output DC voltage and control signals to the next-level equipment, such as tower release, antenna controller, etc. The control signal generally refers to the OOK (On Off Keying, switch modulation) signal of AISG (Antenna Interface Standards Group, antenna interface communication standard), with a DC voltage of +10V to +30V and an OOK signal strength of -18dBm to +5dBm. Conventional multi-frequency combiners generally provide two or more fixed ports, and the system can only select one of the ports from the pre-designed logic to bypass the DC voltage and control signal to the COMM Port (common port). At the same time, when such a combiner is used as a splitter, the DC voltage and control signal of the COMM Port are bypassed to one of the ports according to the pre-designed logic, so a bidirectional switch is required to achieve this flexible switching function.

[0003] The prior art uses field effect transistors as DC switches, separates OOK signals, demodulates the OOK signals, and then modulates them to control the switches. Multiple modem circuits are used to demodulate each bypass of the combiner, which results in high costs. Summary of the invention

[0004] The present application provides a combiner and a bypass switch circuit thereof to solve the above-mentioned high cost problem.

[0005] In order to solve the above technical problems, the present application adopts a technical solution: a bypass switch circuit is provided, which bypass switch circuit at least includes a first switch circuit, a first control circuit, a second switch circuit and a second control circuit, the first switch circuit is coupled to the second switch circuit, the first control circuit is coupled to the first switch circuit and receives a first control signal, and controls the first switch circuit to be turned on or off according to the first control signal; the second control circuit is coupled to the second switch circuit and receives a second control signal, and controls the second switch circuit to be turned on or off according to the second control signal.

[0006] Among them, the first switching circuit at least includes a first diode, a second diode, a first resistor, a second resistor, a third resistor, a fourth resistor, a first switching tube and a second switching tube. The first end of the first switching tube is connected to one end of the first resistor, the positive electrode of the first diode and one end of the third resistor. The second end of the first switching tube is connected to the other end of the first resistor and the negative electrode of the first diode. The second end of the first switching tube receives the first radio frequency signal. The third end of the first switching tube is connected to the third end of the second switching tube. The first end of the second switching tube is connected to one end of the fourth resistor, one end of the second resistor and the positive electrode of the second diode. The second end of the second switching tube is connected to the other end of the second resistor and the negative electrode of the second diode.

[0007] Among them, the first switching circuit further includes a third switching tube and a fourth switching tube, the third end of the third switching tube is connected to the other end of the first resistor, the second end of the third switching tube is grounded, and the first end of the third switching tube receives the first control signal; the third end of the fourth switching tube is connected to the other end of the second resistor, the second end of the fourth switching tube is grounded, and the first end of the fourth switching tube receives the first control signal.

[0008] Among them, the first control circuit at least includes a first capacitor, a fifth resistor, a fifth switch tube and a sixth switch tube, one end of the first capacitor is connected to the second end of the first switch tube, the other end of the first capacitor is connected to the third end of the fifth switch tube, the second end of the fifth switch tube is grounded, the first end of the fifth switch tube is connected to one end of the fifth resistor and the third end of the sixth switch tube, the other end of the fifth resistor receives the first voltage, the second end of the sixth switch tube is grounded, and the first end of the sixth switch tube receives the first control signal.

[0009] The first control circuit further includes a sixth resistor, a first end of the sixth resistor is connected to the first end of the sixth switch tube, and the other end of the sixth resistor is grounded.

[0010] Among them, when the first control signal is at a high level, the sixth switch tube is turned on, the first end of the fifth switch tube is grounded, and the fifth switch tube is turned off; the third switch tube and the fourth switch tube are turned on, the first end of the first switch tube and the first end of the second switch tube are grounded, the first switch tube and the second switch tube are turned on, and the first RF signal is output through the first switch tube and the second switch tube.

[0011] Among them, when the first control signal is at a low level, the third switch tube and the fourth switch tube are turned off, so that the first switch tube and the second switch tube are turned off; the sixth switch tube is turned off, the first end of the fifth switch tube receives the first voltage through the fifth resistor, the fifth switch tube is turned on, and the first RF signal is grounded through the first capacitor and the fifth switch tube.

[0012] The first switch circuit is the same as the second switch circuit, and the first control circuit is the same as the second control circuit.

[0013] When the second control signal is at a high level, the second switch circuit is turned on; when the second control signal is at a low level, the second switch circuit is turned off.

[0014] In order to solve the above-mentioned technical problems, another technical solution adopted in the present application is: a combiner is provided, which includes a signal controller and a bypass switch circuit as mentioned above, the signal controller is coupled to the bypass switch circuit, and the signal controller sends a first control signal and a second control signal to the bypass switch circuit so that the bypass switch circuit outputs a first RF signal and / or a second RF signal.

[0015] The beneficial effects of the present application are as follows: Different from the prior art, the present application receives a first control signal through a first control circuit, and controls the first switch circuit to be turned on or off according to the first control signal; the second switch circuit receives a second control signal, and controls the second switch circuit to be turned on or off according to the second control signal. By changing the first control signal and the second control signal, the first switch circuit and the second switch circuit are turned on or off, and no additional modem is required to demodulate and modulate the signals of the first switch circuit and the second switch circuit, thereby reducing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 is a circuit diagram of an embodiment of a bypass switch circuit of the present application;

[0018] Figure 2 yes Figure 1 A circuit diagram of a first switch circuit;

[0019] Figure 3 yes Figure 1 A circuit diagram of a first control circuit;

[0020] Figure 4 yes Figure 1 A circuit diagram of a second switch circuit;

[0021] Figure 5 yes Figure 1 A circuit diagram of a second control circuit;

[0022] Figure 6 is a circuit diagram of another embodiment of the bypass switch circuit of the present application;

[0023] Figure 7 It is a circuit diagram of an embodiment of the combiner of the present application. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0025] The terms "first", "second", etc. in this application are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but optionally includes steps or units that are not listed, or optionally includes other steps or units inherent to these processes, methods, products or devices.

[0026] In order to enable those skilled in the art to better understand the technical solution of the present application, the bypass switch circuit and the combiner provided by the invention are further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0027] See also Figure 1 , Figure 1 1 is a circuit diagram of an embodiment of the bypass switch circuit of the present application. The bypass switch circuit 110 includes a first bypass, a first switch circuit 111 , a first control circuit 112 , a second bypass, a second switch circuit 113 and a second control circuit 114 .

[0028] The input end of the first bypass receives the first radio frequency signal U1, the input end of the second bypass receives the second radio frequency signal U2, and the output end of the second bypass is connected to the output end of the first bypass.

[0029] The first switch circuit 111 is connected in series between the input end of the first bypass and the output end of the first bypass, the first control circuit 112 is coupled to the first switch circuit 111 and receives the first control signal U3, and controls the first switch circuit 111 to be turned on or off according to the first control signal U3; the second switch circuit 113 is connected in series between the input end of the second bypass and the output end of the second bypass, the second control circuit 114 is coupled to the second switch circuit 113 and receives the second control signal U4, and controls the second switch circuit 113 to be turned on or off according to the second control signal U4.

[0030] When the first control circuit 112 controls the first switch circuit 111 to be turned on according to the first control signal U3 and the second control circuit 114 controls the second switch circuit 113 to be turned off according to the second control signal U4 , the first RF signal U1 is output through the first switch circuit 111 .

[0031] When the first control circuit 112 controls the first switch circuit 111 to be turned off according to the first control signal U3 and the second control circuit 114 controls the second switch circuit 113 to be turned on according to the second control signal U4 , the second RF signal U2 is output through the second switch circuit 113 .

[0032] When the first control circuit 112 controls the first switch circuit 111 to turn on according to the first control signal U3 and the second control circuit 114 controls the second switch circuit 113 to turn on according to the second control signal U4, the first RF signal U1 and the second RF signal U2 are output through the first switch circuit 111 and the second switch circuit 113 respectively.

[0033] Different from the prior art, this embodiment controls the first control signal U3 and the second control signal U4 to realize the conduction or disconnection of the first switch circuit 111 and the second switch circuit 113, thereby realizing the output of the first RF signal U1 and / or the second RF signal U2. No additional modem is required to demodulate and modulate the first RF signal U1 and the second RF signal U2, thereby reducing costs.

[0034] Further reading Figure 2 , Figure 2 yes Figure 1 The first switch circuit 111 includes a first diode D1, a second diode D2, a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a first switch tube Q1 and a second switch tube Q2.

[0035] A first end of the first switch tube Q1 is connected to one end of the first resistor R1, the anode of the first diode D1 and one end of the third resistor R3, a second end of the first switch tube Q1 is connected to the other end of the first resistor R1 and the cathode of the first diode D1, a second end of the first switch tube Q1 receives the first RF signal U1, a third end of the first switch tube Q1 is connected to the third end of the second switch tube Q2, a first end of the second switch tube Q2 is connected to one end of the fourth resistor R4, one end of the second resistor R2 and the anode of the second diode D2, and a second end of the second switch tube Q2 is connected to the other end of the second resistor R2 and the cathode of the second diode D2.

[0036] The first end, the second end and the third end of the first switch tube Q1 and the first end, the second end and the third end of the second switch tube Q2 are respectively the gate, the source and the drain of the first switch tube Q1 and the gate, the source and the drain of the second switch tube Q2, and parasitic diodes are respectively formed between the source and the drain of the first switch tube Q1 and between the source and the drain of the second switch tube Q2. Optionally, the first switch tube Q1 and the second switch tube Q2 are P-type channel MOSFET tubes, and the P-type MOS tube is turned on at a low level and turned off at a high level.

[0037] The first diode D1 and the second diode D2 are voltage stabilizing diodes, which are used to prevent the voltage from exceeding the maximum gate-source voltage of the first switch tube Q1 and the second switch tube Q2 when the input first RF signal U1 is too large, thereby damaging the first switch tube Q1 and the second switch tube Q2.

[0038] The first resistor R1, the second resistor R2, the third resistor R3 and the fourth resistor R4 can provide appropriate voltages to the gate and source of the first switch tube Q1 and the gate and source of the second switch tube Q2 to prevent the gate-source voltage of the first switch tube Q1 and the second switch tube Q2 from being too large and damaging the first switch tube Q1 and the second switch tube Q2.

[0039] like Figure 2 As shown, the first switch circuit 111 further includes a third switch tube Q3 and a fourth switch tube Q4. The third end of the third switch tube Q3 is connected to the other end of the first resistor R1, the second end of the third switch tube Q3 is grounded, and the first end of the third switch tube Q3 receives the first control signal U3; the third end of the fourth switch tube Q4 is connected to the other end of the second resistor R2, the second end of the fourth switch tube Q4 is grounded, and the first end of the fourth switch tube Q4 receives the first control signal U3.

[0040] The third switch tube Q3 and the fourth switch tube Q4 provide driving control signals for the gates of the first switch tube Q1 and the second switch tube Q2, respectively. At the same time, the first switch tube Q1 and the second switch tube Q2 are grounded through the third switch tube Q3 and the fourth switch tube Q4, respectively, which can prevent the problem of circuit oscillation caused by interference generated by high-frequency operation and ensure the release of static electricity in the circuit. Among them, the first end, the second end and the third end of the third switch tube Q3 and the first end, the second end and the third end of the fourth switch tube Q4 are the gate, source and drain of the third switch tube Q3 and the gate, source and drain of the fourth switch tube Q4, respectively, and parasitic diodes are formed between the source and drain of the third switch tube Q3 and the source and drain of the fourth switch tube Q4. Optionally, the third switch tube Q3 and the fourth switch tube Q4 are N-type channel MOSFET tubes, and the N-type MOS tube is turned on at a high level and cut off at a low level. Optionally, in other embodiments, the third switch tube Q3 and the fourth switch tube Q4 may be NPN transistors.

[0041] When the first control signal U3 is at a high level, the third switch tube Q3 and the fourth switch tube Q4 are turned on, the first ends of the first switch tube Q1 and the second switch tube Q2 are grounded through the third switch tube Q3 and the fourth switch tube Q4, the first switch tube Q1 and the second switch tube Q2 are turned on, and the first RF signal U1 is output through the first switch tube Q1 and the second switch tube Q2.

[0042] When the first control signal U3 is at a low level, the third switch tube Q3 and the fourth switch tube Q4 are turned off, and the first switch tube Q1 and the second switch tube Q2 are turned off.

[0043] In this embodiment, the first control signal U3 is controlled to switch between high and low levels to turn on and off the first switch tube Q1 and the second switch tube Q2, thereby outputting the first RF signal U1 or bypassing the first RF signal U1 to ground, without the need to additionally demodulate and modulate the first RF signal U1.

[0044] Further integration Figure 2 See also Figure 3 , Figure 3 yes Figure 1 The first control circuit 112 includes a first capacitor C1, a fifth resistor R5, a sixth resistor R6, a fifth switch tube Q5 and a sixth switch tube Q6.

[0045] One end of the first capacitor C1 is connected to the second end of the first switch tube Q1 and receives the first RF signal U1. The other end of the first capacitor C1 is connected to the third end of the fifth switch tube Q5. The second end of the fifth switch tube Q5 is grounded. The first end of the fifth switch tube Q5 is connected to one end of the fifth resistor R5 and the third end of the sixth switch tube Q6. The other end of the fifth resistor R5 receives the first voltage U5. The second end of the sixth switch tube Q6 is grounded. The first end of the sixth switch tube Q6 is connected to one end of the sixth resistor R6. The other end of the sixth resistor R6 is grounded. The first end of the sixth switch tube Q6 and one end of the sixth resistor R6 receive the first control signal U3.

[0046] The first capacitor C1 is a coupling capacitor, which bypasses and cuts off the first RF signal U1. The sixth resistor R6 is a pull-down resistor, which ensures that the first control signal U3 is at a low level when the bypass switch circuit 110 is just powered on, and the first switch tube Q1 and the second switch tube Q2 are in the cut-off state.

[0047] Among them, the first end, the second end and the third end of the fifth switch tube Q5 and the first end, the second end and the third end of the sixth switch tube Q6 are respectively the gate, the source and the drain of the fifth switch tube Q5 and the gate, the source and the drain of the sixth switch tube Q6. The fifth switch tube Q5 and the sixth switch tube Q6 are N-type channel MOSFET tubes, and the N-type MOS tube is turned on at a high level and turned off at a low level. Optionally, in other embodiments, the fifth switch tube Q5 and the sixth switch tube Q6 can be NPN transistors.

[0048] When the first control signal U3 is at a high level, the sixth switch tube Q6 is turned on, the first end of the fifth switch tube Q5 is grounded through the sixth switch tube Q6, and the fifth switch tube Q5 is turned off.

[0049] When the first control signal U3 is at a low level, the sixth switch tube Q6 is turned off, the first end of the fifth switch tube Q5 receives the first voltage U5 through the fifth resistor R5, the fifth switch tube Q5 is turned on, and the first RF signal U1 is conducted to the ground through the first capacitor C1 and the fifth switch tube Q5.

[0050] The first voltage U5 provides a supply voltage for the fifth switch tube Q5. Optionally, the first voltage U5 may be +5V or +3.3V.

[0051] This embodiment controls the conversion of the high and low levels of the first control signal U3 to realize the conduction or cut-off of the sixth switch tube Q6, and then realizes the conduction or cut-off of the fifth switch tube Q5. When the fifth switch tube Q5 is turned on, the first RF signal U1 is conducted to the ground through the first capacitor C1 and the fifth switch tube Q5, reducing the output of the first RF signal U1 through the source and drain of the first switch tube Q1 and the source and drain of the second switch tube Q2, and effectively increasing the signal isolation between the first bypass and the second bypass.

[0052] Further reading Figure 4 , Figure 4 yes Figure 1 The second switch circuit 113 includes a third diode D3, a fourth diode D4, a seventh resistor R7, an eighth resistor R8, a ninth resistor R9, a tenth resistor R10, a seventh switch tube Q7 and an eighth switch tube Q8.

[0053] A first end of the seventh switch tube Q7 is connected to one end of the seventh resistor R7, the anode of the third diode D3 and one end of the ninth resistor R9, a second end of the seventh switch tube Q7 is connected to the other end of the seventh resistor R7 and the cathode of the third diode D3, a second end of the seventh switch tube Q7 receives the second RF signal U2, a third end of the seventh switch tube Q7 is connected to the third end of the eighth switch tube Q8, a first end of the eighth switch tube Q8 is connected to one end of the tenth resistor R10, one end of the eighth resistor R8 and the anode of the fourth diode D4, and a second end of the eighth switch tube Q8 is connected to the other end of the eighth resistor R8 and the cathode of the fourth diode D4.

[0054] The first end, the second end and the third end of the seventh switch tube Q7 and the first end, the second end and the third end of the eighth switch tube Q8 are respectively the gate, the source and the drain of the seventh switch tube Q7 and the gate, the source and the drain of the eighth switch tube Q8, and parasitic diodes are respectively formed between the source and the drain of the seventh switch tube Q7 and between the source and the drain of the eighth switch tube Q8. The seventh switch tube Q7 and the eighth switch tube Q8 are P-type channel MOSFET tubes, and the P-type MOS tube is turned on at a low level and turned off at a high level.

[0055] The third diode D3 and the fourth diode D4 are voltage stabilizing diodes, which are used to prevent the seventh switch tube Q7 and the eighth switch tube Q8 from being damaged when the voltage of the input second RF signal U2 exceeds the maximum gate-source voltage of the seventh switch tube Q7 and the eighth switch tube Q8.

[0056] The seventh resistor R7, the eighth resistor R8, the ninth resistor R9 and the tenth resistor R10 can provide appropriate voltages to the gate and source of the seventh switch tube Q7 and the gate and source of the eighth switch tube Q8 to prevent the gate-source voltage of the seventh switch tube Q7 and the eighth switch tube Q8 from being too large and damaging the seventh switch tube Q7 and the eighth switch tube Q8.

[0057] like Figure 4 As shown, the second switch circuit 113 further includes a ninth switch tube Q9 and a tenth switch tube Q10. The third end of the ninth switch tube Q9 is connected to the other end of the ninth resistor R9, the second end of the ninth switch tube Q9 is grounded, and the first end of the ninth switch tube Q9 receives the second control signal U4; the third end of the tenth switch tube Q10 is connected to the other end of the tenth resistor R10, the second end of the tenth switch tube Q10 is grounded, and the first end of the tenth switch tube Q10 receives the second control signal U4.

[0058] The ninth switch tube Q9 and the tenth switch tube Q10 provide driving control signals for the gates of the seventh switch tube Q7 and the eighth switch tube Q8, respectively. At the same time, the seventh switch tube Q7 and the eighth switch tube Q8 are grounded through the ninth switch tube Q9 and the tenth switch tube Q10, respectively, which can prevent the problem of circuit oscillation caused by interference generated by high-frequency operation and ensure the electrostatic discharge in the circuit. Among them, the first end, the second end and the third end of the ninth switch tube Q9 and the first end, the second end and the third end of the tenth switch tube Q10 are the gate, source and drain of the ninth switch tube Q9 and the gate, source and drain of the tenth switch tube Q10, respectively, and parasitic diodes are formed between the source and drain of the ninth switch tube Q9 and the source and drain of the tenth switch tube Q10, respectively. Among them, the ninth switch tube Q9 and the tenth switch tube Q10 are N-type channel MOSFET tubes, and the N-type MOS tube is turned on at a high level and cut off at a low level. Optionally, in other embodiments, the ninth switch tube Q9 and the tenth switch tube Q10 may be NPN transistors.

[0059] When the second control signal U4 is at a high level, the ninth switch tube Q9 and the tenth switch tube Q10 are turned on, the first ends of the seventh switch tube Q7 and the eighth switch tube Q8 are grounded through the ninth switch tube Q9 and the tenth switch tube Q10, the seventh switch tube Q7 and the eighth switch tube Q8 are turned on, and the second RF signal U2 is output through the seventh switch tube Q7 and the eighth switch tube Q8.

[0060] When the second control signal U4 is at a low level, the ninth switch tube Q9 and the tenth switch tube Q10 are turned off, and the seventh switch tube Q7 and the eighth switch tube Q8 are turned off.

[0061] In this embodiment, the seventh switch tube Q7 and the eighth switch tube Q8 are turned on and off by controlling the conversion of the high and low levels of the second control signal U4, thereby outputting the second RF signal U2 or bypassing the second RF signal U2 to the ground, without the need for additional demodulation and modulation of the second RF signal U2.

[0062] Further integration Figure 4 See also Figure 5 , Figure 5 yes Figure 1 The second control circuit 114 includes a second capacitor C2, an eleventh resistor R11, a twelfth resistor R12, an eleventh switch tube Q11 and a twelfth switch tube Q12.

[0063] One end of the second capacitor C2 is connected to the second end of the seventh switch tube Q7 and receives the second RF signal U2. The other end of the second capacitor C2 is connected to the third end of the eleventh switch tube Q11. The second end of the eleventh switch tube Q11 is grounded. The first end of the eleventh switch tube Q11 is connected to one end of the eleventh resistor R11 and the third end of the twelfth switch tube Q12. The other end of the eleventh resistor R11 receives the second voltage U6. The second end of the twelfth switch tube Q12 is grounded. The first end of the twelfth switch tube Q12 is connected to one end of the twelfth resistor R12. The other end of the twelfth resistor R12 is grounded. The first end of the twelfth switch tube Q12 and one end of the sixth resistor R6 receive the second control signal U4.

[0064] The second capacitor C2 is a coupling capacitor, which bypasses and cuts off the second RF signal U2. The twelfth resistor R12 is a pull-down resistor, which ensures that the second control signal U4 is at a low level when the bypass switch circuit 110 is just powered on, and the seventh switch tube Q7 and the eighth switch tube Q8 are in the cut-off state.

[0065] Among them, the first end, the second end and the third end of the eleventh switch tube Q11 and the first end, the second end and the third end of the twelfth switch tube Q12 are the gate, source and drain of the eleventh switch tube Q11 and the gate, source and drain of the twelfth switch tube Q12 respectively. The eleventh switch tube Q11 and the twelfth switch tube Q12 are N-type channel MOSFET tubes, and the N-type MOS tube is turned on at a high level and turned off at a low level. Optionally, in other embodiments, the eleventh switch tube Q11 and the twelfth switch tube Q12 may be NPN transistors.

[0066] When the second control signal U4 is at a high level, the twelfth switch tube Q12 is turned on, the first end of the eleventh switch tube Q11 is grounded through the twelfth switch tube Q12, and the eleventh switch tube Q11 is turned off.

[0067] When the second control signal U4 is at a low level, the twelfth switch tube Q12 is turned off, the first end of the eleventh switch tube Q11 receives the second voltage U6 through the eleventh resistor R11, the eleventh switch tube Q11 is turned on, and the second RF signal U2 is conducted to ground through the second capacitor C2 and the eleventh switch tube Q11.

[0068] The second voltage U6 provides a supply voltage for the eleventh switch tube Q11. Optionally, the second voltage U6 may be +5V or +3.3V.

[0069] This embodiment controls the high-low level conversion of the second control signal U4 to realize the conduction or cut-off of the twelfth switch tube Q12, and then realizes the conduction or cut-off of the eleventh switch tube Q11. When the eleventh switch tube Q11 is turned on, the second RF signal U2 is conducted to the ground through the second capacitor C2 and the eleventh switch tube Q11, reducing the output of the second RF signal U2 through the source and drain of the seventh switch tube Q7 and the source and drain of the eighth switch tube Q8, and effectively increasing the signal isolation between the first bypass and the second bypass.

[0070] Further reading Figure 6 When the first control signal U3 is at a high level and the second control signal U4 is at a low level, the first RF signal U1 is output through the first switch tube Q1 and the second switch tube Q2, and the second RF signal U2 is connected to the ground through the second capacitor C2 and the eleventh switch tube Q11, and the common port U OUT Output a first radio frequency signal U1.

[0071] When the first control signal U3 is at a low level and the second control signal U4 is at a high level, the first RF signal U1 is connected to the ground through the first capacitor C1 and the fifth switch tube Q5, and the second RF signal U2 is output through the seventh switch tube Q7 and the eighth switch tube Q8. OUT Output a second radio frequency signal U2.

[0072] When the first control signal U3 is at a high level and the second control signal U4 is at a high level, the first RF signal U1 is output through the first switch tube Q1 and the second switch tube Q2, and the second RF signal U2 is output through the seventh switch tube Q7 and the eighth switch tube Q8. OUT Output a first radio frequency signal U1 and a second radio frequency signal U2.

[0073] In this embodiment, the first control signal U3 and the second control signal U4 are controlled to output the first RF signal U1 and / or the second RF signal U2, and no additional modem is required to demodulate and modulate the first RF signal U1 and the second RF signal U2, thereby reducing costs. In this embodiment, a first control circuit 112 and a second control circuit 114 are provided, and the RF signal U1 and the second RF signal U2 are bypassed and cut off through the first capacitor C1 and the second capacitor C2, thereby improving the signal isolation between the first switch circuit 111 and the second switch circuit 113.

[0074] See also Figure 7 , Figure 71 is a circuit diagram of an embodiment of a combiner of the present application. The combiner 10 includes a bypass switch circuit 110 and a signal controller 120. The bypass switch circuit 110 is coupled to the signal controller 120, and the input end of the bypass switch circuit 110 receives multiple radio frequency signals. The bypass switch circuit 110 receives a control signal output by the signal controller 120, and outputs one or more of the radio frequency signals according to the control signal. Optionally, when the input end of the bypass switch circuit 110 receives two radio frequency signals, the signal controller 120 sends a first control signal U3 and a second control signal U4 to the bypass switch circuit 110, so that the bypass switch circuit 110 outputs the first radio frequency signal U1 and / or the second radio frequency signal U2.

[0075] The above are merely embodiments of the present application and are not intended to limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A bypass switch circuit, characterized in that: The bypass switch circuit at least includes a first switch circuit, a first control circuit, a second switch circuit and a second control circuit, the first switch circuit is coupled to the second switch circuit, the first control circuit is coupled to the first switch circuit and receives a first control signal, and controls the first switch circuit to be turned on or off according to the first control signal; the second control circuit is coupled to the second switch circuit and receives a second control signal, and controls the second switch circuit to be turned on or off according to the second control signal; wherein the bypass switch circuit controls the output of a first radio frequency signal through the first control circuit, or controls the output of a second radio frequency signal through the second control circuit, and the first radio frequency signal or the second radio frequency signal is an OOK signal; Wherein, the first switch circuit at least includes a first diode, a second diode, a first resistor, a second resistor, a third resistor, a fourth resistor, a first switch tube, a second switch tube, a third switch tube and a fourth switch tube, the first end of the first switch tube is connected to one end of the first resistor, the positive electrode of the first diode and one end of the third resistor, the second end of the first switch tube is connected to the other end of the first resistor and the negative electrode of the first diode, the second end of the first switch tube receives the first RF signal, the third end of the first switch tube is connected to the third end of the second switch tube, the first end of the second switch tube is connected to one end of the fourth resistor, one end of the second resistor and the positive electrode of the second diode, and the second end of the second switch tube is connected to the other end of the second resistor and the negative electrode of the second diode; The third end of the third switch tube is connected to the other end of the third resistor, the second end of the third switch tube is grounded, and the first end of the third switch tube receives the first control signal; the third end of the fourth switch tube is connected to the other end of the fourth resistor, the second end of the fourth switch tube is grounded, and the first end of the fourth switch tube receives the first control signal; The first control circuit at least includes a first capacitor, a fifth resistor, a sixth resistor, a fifth switch tube and a sixth switch tube, one end of the first capacitor is connected to the second end of the first switch tube, the other end of the first capacitor is connected to the third end of the fifth switch tube, the second end of the fifth switch tube is grounded, the first end of the fifth switch tube is connected to one end of the fifth resistor and the third end of the sixth switch tube, the other end of the fifth resistor receives a first voltage, the second end of the sixth switch tube is grounded, the first end of the sixth switch tube receives the first control signal, the first end of the sixth resistor is connected to the first end of the sixth switch tube, and the other end of the sixth resistor is grounded.

2. The bypass switch circuit according to claim 1, characterized in that: When the first control signal is at a high level, the sixth switch tube is turned on, the first end of the fifth switch tube is grounded, and the fifth switch tube is turned off; the third switch tube and the fourth switch tube are turned on, the first end of the first switch tube and the first end of the second switch tube are grounded, the first switch tube and the second switch tube are turned on, and the first RF signal is output through the first switch tube and the second switch tube.

3. The bypass switch circuit according to claim 1, characterized in that: When the first control signal is at a low level, the third switch tube and the fourth switch tube are turned off, so that the first switch tube and the second switch tube are turned off; the sixth switch tube is turned off, the first end of the fifth switch tube receives the first voltage through the fifth resistor, the fifth switch tube is turned on, and the first RF signal is grounded through the first capacitor and the fifth switch tube.

4. The bypass switch circuit according to claim 1, characterized in that: The second switch circuit at least includes a third diode, a fourth diode, a seventh resistor, an eighth resistor, a ninth resistor, a tenth resistor, a seventh switch tube, an eighth switch tube, a ninth switch tube and a tenth switch tube; Wherein, the first end of the seventh switch tube is connected to one end of the seventh resistor, the anode of the third diode and one end of the ninth resistor, the second end of the seventh switch tube is connected to the other end of the seventh resistor and the cathode of the third diode, the second end of the seventh switch tube receives the second RF signal, the third end of the seventh switch tube is connected to the third end of the eighth switch tube, the first end of the eighth switch tube is connected to one end of the tenth resistor, one end of the eighth resistor and the anode of the fourth diode, and the second end of the eighth switch tube is connected to the other end of the eighth resistor and the cathode of the fourth diode; The third end of the ninth switch tube is connected to the other end of the ninth resistor, the second end of the ninth switch tube is grounded, and the first end of the ninth switch tube receives the second control signal; the third end of the tenth switch tube is connected to the other end of the tenth resistor, the second end of the tenth switch tube is grounded, and the first end of the tenth switch tube receives the second control signal; The second control circuit at least includes a second capacitor, an eleventh resistor, a twelfth resistor, an eleventh switch tube and a twelfth switch tube, one end of the second capacitor is connected to the second end of the seventh switch tube, the other end of the second capacitor is connected to the third end of the eleventh switch tube, the second end of the eleventh switch tube is grounded, the first end of the eleventh switch tube is connected to one end of the eleventh resistor and the third end of the twelfth switch tube, the other end of the eleventh resistor receives a second voltage, the second end of the twelfth switch tube is grounded, the first end of the twelfth switch tube is connected to one end of the twelfth resistor, the other end of the twelfth resistor is grounded, and the first end of the twelfth switch tube and one end of the sixth resistor receive the second control signal.

5. The bypass switch circuit according to claim 4, characterized in that: When the second control signal is at a high level, the second switch circuit is turned on; when the second control signal is at a low level, the second switch circuit is turned off.

6. A combiner, characterized in that: The combiner includes a signal controller and a bypass switch circuit as described in any one of claims 1 to 5, wherein the signal controller is coupled to the bypass switch circuit, and the signal controller sends the first control signal and the second control signal to the bypass switch circuit so that the bypass switch circuit outputs the first RF signal and / or the second RF signal.

Images