High-speed PIN radio frequency switch control circuit

Abstract

The utility model relates to a high-speed PIN radio frequency switch control circuit, which comprises a logic gate input level end, a positive voltage input end, a negative voltage input end, a PIN diode control power supply input port end, a first triode, a second triode and a third triode, the input level end of the logic gate is electrically connected with the base electrode of the first triode and the emitter electrode of the third triode; the base electrode of the third triode is grounded, the collector electrode of the third triode is sequentially connected with a fifth resistor and a fourth capacitor in series, and the fourth capacitor is grounded; the collector electrode of the third triode is also electrically connected with the base electrode of the second triode; the emitter of the second triode is electrically connected with a negative voltage input end, and the negative voltage input end is also electrically connected with the ungrounded end of the fourth capacitor; and the collector electrode of the second triode is electrically connected with the collector electrode of the first triode. According to the utility model, positive and negative electricity rapid switching is realized by using the triodes, so that rapid switching control of the PIN radio frequency switch is realized.

Description

Technical Field

[0001] The utility model relates to the field of circuits, in particular to a high-speed PIN radio frequency switch control circuit. Background Art

[0002] PIN radio frequency switches are an important part of the current development in the radio frequency field and are widely used in fields such as aerospace, radar warning, medical safety, and drones. With the continuous development of radio frequency technology, the requirements for PIN radio frequency switches are also constantly increasing, especially for radio frequency switches with high-speed switching in medical and radar systems.

[0003] Currently, the research on the control circuit of PIN radio frequency switches is insufficient. Therefore, how to implement a drive circuit for rapid switching of PIN radio frequency switch channels is an urgent problem to be solved currently. Summary of the Utility Model

[0004] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a high-speed PIN radio frequency switch control circuit, which uses a triode to achieve rapid switching of positive and negative voltages so as to achieve rapid switching control of the PIN radio frequency switch.

[0005] The purpose of the utility model is realized through the following technical solutions:

[0006] A high-speed PIN radio frequency switch control circuit includes a logic gate input level terminal, a positive voltage input terminal, a negative voltage input terminal, a PIN diode control power input port terminal, a first triode, a second triode, and a third triode;

[0007] The logic gate input level terminal is electrically connected to both the base of the first triode and the emitter of the third triode; the base of the third triode is grounded, the collector of the third triode is sequentially connected in series with a fifth resistor and a fourth capacitor, and the fourth capacitor is grounded; the collector of the third triode is also electrically connected to the base of the second triode; the emitter of the second triode is electrically connected to the negative voltage input terminal, and the negative voltage input terminal is also electrically connected to the ungrounded end of the fourth capacitor; the collector of the second triode is electrically connected to the collector of the first triode; the collector of the first triode is electrically connected to a third resistor, and the third resistor is electrically connected to the PIN diode control power input port terminal; the emitter of the first triode is electrically connected to a first capacitor, the first capacitor is grounded, the emitter of the first triode is also electrically connected to the positive voltage input terminal, and a first resistor is electrically connected between the emitter and the base of the first triode.

[0008] Further, a first filter circuit is connected in series between the logic gate input level terminal and the emitter of the third triode.

[0009] Further, the first filter circuit is a first RC parallel circuit.

[0010] Further, the first RC parallel circuit includes a fourth resistor and a third capacitor, and the fourth resistor and the third capacitor are in parallel.

[0011] Further, a second filter circuit is connected in series between the input level terminal of the logic gate and the base of the first triode.

[0012] Further, the second filter circuit is a second RC parallel circuit.

[0013] Further, the second RC parallel circuit includes a second resistor and a second capacitor, and the second resistor and the second capacitor are in parallel.

[0014] Further, the first triode is a PNP triode.

[0015] Further, the second triode is an NPN triode.

[0016] Further, the third triode is a PNP triode.

[0017] The beneficial effects of the present utility model are as follows:

[0018] The triode is used to realize the rapid switching of positive and negative voltages, so as to achieve the rapid switching control of the PIN radio frequency switch. Description of the Drawings

[0019] Figure 1 It is a schematic circuit diagram of the present utility model. Detailed Embodiments

[0020] The following specific examples are used to illustrate the embodiments of the present utility model. Those skilled in the art can easily understand the other advantages and effects of the present utility model from the content disclosed in this specification. The present utility model can also be implemented or applied through other different specific embodiments. Various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present utility model. It should be noted that, without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0021] It should be noted that the diagrams provided in the following embodiments only illustrate the basic concept of the present utility model in a schematic manner. Therefore, only the components related to the present utility model are shown in the diagrams, rather than being drawn according to the number, shape, and size of the components in actual implementation. The type, quantity, and ratio of each component in actual implementation can be arbitrarily changed, and the component layout type may also be more complex.

[0022] Embodiment 1:

[0023] As Figure 1As shown in the figure, a high-speed PIN radio frequency switch control circuit includes a logic gate input level terminal TTL, a positive voltage input terminal VCC, a negative voltage input terminal VEE, a PIN diode control power input port terminal P, a first triode, a second triode, and a third triode;

[0024] The logic gate input level terminal TTL is electrically connected to both the base of the first triode V1 and the emitter of the third triode V3; the base of the third triode V3 is grounded, and the collector of the third triode V3 is successively connected in series with a fifth resistor R5 and a fourth capacitor C4, and the fourth capacitor C4 is grounded; the collector of the third triode V3 is also electrically connected to the base of the second triode V2; the emitter of the second triode V2 is electrically connected to the negative voltage input terminal VEE, and the negative voltage input terminal VEE is also electrically connected to the ungrounded end of the fourth capacitor C4; the collector of the second triode V2 is electrically connected to the collector of the first triode V1; the collector of the first triode V1 is electrically connected to a third resistor R3, and the third resistor R3 is electrically connected to the PIN diode control power input port terminal P; the emitter of the first triode V1 is electrically connected to a first capacitor C1, the first capacitor C1 is grounded, the emitter of the first triode V1 is also electrically connected to the positive voltage input terminal VCC, and a first resistor R1 is electrically connected between the emitter and the base of the first triode V1.

[0025] A first filter circuit is connected in series between the logic gate input level terminal TTL and the emitter of the third triode.

[0026] The first filter circuit is a first RC parallel circuit.

[0027] The first RC parallel circuit includes a fourth resistor R4 and a third capacitor C3, and the fourth resistor R4 and the third capacitor C3 are in parallel.

[0028] A second filter circuit is connected in series between the logic gate input level terminal TTL and the base of the first triode.

[0029] The second filter circuit is a second RC parallel circuit.

[0030] The second RC parallel circuit includes a second resistor R2 and a second capacitor C2, and the second resistor R2 and the second capacitor C2 are in parallel.

[0031] The first triode V1 is a PNP triode.

[0032] The second triode V2 is an NPN triode.

[0033] The third triode V3 is a PNP triode.

[0034] The positive voltage input terminal provides the positive voltage input required by the PIN diode; the negative voltage input terminal provides the negative voltage input required by the PIN diode.

[0035] The input of a high-speed PIN radio frequency switch control circuit is divided into three parts: (1) the TTL fast-switching level output by any logic gate. (2) All the positive voltages required for the PIN radio frequency switch control. (3) The negative voltage required by the PIN radio frequency switch. The output part is a fast-changing positive and negative voltage.

[0036] When a high-speed PIN radio frequency switch control circuit is powered on with positive and negative voltages, relying on the property that the conduction characteristics of NPN type and PNP type are opposite. The input TTL level can realize the fast conversion of positive and negative voltages by turning on and off the NPN type and PNP type transistors, so as to achieve the fast switching of the PIN radio frequency switch.

[0037] Its working principle is: converting the externally input logic gate signal with low delay into the control signal required by the PIN radio frequency switch.

[0038] Connect VCC and VEE to a high-speed PIN radio frequency switch control circuit in advance. When the input logic level TTL enters this circuit, relying on the property that the conduction characteristics of NPN type and PNP type are opposite, the fast conversion of positive and negative voltages is realized. At the same time, it has the isolation between digital signals and analog signals.

[0039] A high-speed PIN radio frequency switch control circuit also has the advantages of simple structure, small circuit volume, strong environmental adaptability, wide use of PIN radio frequency switches, strong input control compatibility, fast switching rate, excellent performance, few components, low failure rate, and simple maintenance.

[0040] A high-speed PIN radio frequency switch control circuit has a wide range of voltage adaptability, can provide a large control current, can drive multiple PIN diodes simultaneously, has a low control signal delay, a fast switching speed, and a high switching accuracy.

[0041] A high-speed PIN radio frequency switch control circuit also has a simple circuit structure, strong working environment adaptability, small circuit occupied volume, and is applicable to any PIN radio frequency switch occasion. It is a small-volume, large-current, high-voltage, high-speed radio frequency switch control circuit.

[0042] The above-described embodiments only represent the specific implementation manners of the present invention, and the description thereof is relatively specific and detailed, but it should not be construed as a limitation to the scope of the patent of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention.

Claims

1. A high-speed PIN RF switch control circuit, characterized in that: It includes a logic gate input level terminal, a positive voltage input terminal, a negative voltage input terminal, a PIN diode control power input port terminal, a first triode, a second triode, and a third triode; The logic gate input level terminal is electrically connected to both the base of the first triode and the emitter of the third triode; the base of the third triode is grounded, and a fifth resistor and a fourth capacitor are connected in series in sequence at the collector of the third triode, and the fourth capacitor is grounded; the collector of the third triode is also electrically connected to the base of the second triode; the emitter of the second triode is electrically connected to the negative voltage input terminal, and the negative voltage input terminal is also electrically connected to the non-grounded end of the fourth capacitor; the collector of the second triode is electrically connected to the collector of the first triode; a third resistor is electrically connected to the collector of the first triode, and the third resistor is electrically connected to the PIN diode control power input port terminal; a first capacitor is electrically connected to the emitter of the first triode, the first capacitor is grounded, the emitter of the first triode is also electrically connected to the positive voltage input terminal, and a first resistor is electrically connected between the emitter and the base of the first triode.

2. The high-speed PIN radio frequency switch control circuit according to claim 1, wherein: A first filtering circuit is connected in series between the logic gate input level terminal and the emitter of the third triode.

3. The high-speed PIN radio frequency switch control circuit according to claim 2, wherein: The first filtering circuit is a first RC parallel circuit.

4. The high-speed PIN radio frequency switch control circuit according to claim 3, wherein: The first RC parallel circuit includes a fourth resistor and a third capacitor, and the fourth resistor and the third capacitor are connected in parallel.

5. The high-speed PIN radio frequency switch control circuit according to claim 1, wherein: A second filtering circuit is connected in series between the logic gate input level terminal and the base of the first triode.

6. The high-speed PIN radio frequency switch control circuit according to claim 5, wherein: The second filtering circuit is a second RC parallel circuit.

7. The high-speed PIN radio frequency switch control circuit according to claim 6, wherein: The second RC parallel circuit includes a second resistor and a second capacitor, and the second resistor and the second capacitor are connected in parallel.

8. The high-speed PIN radio frequency switch control circuit according to claim 1, wherein: The first triode is a PNP triode.

9. The high-speed PIN radio frequency switch control circuit according to claim 1, wherein: The second triode is an NPN triode.

10. The high-speed PIN radio frequency switch control circuit according to claim 1, wherein: The third triode is a PNP triode.

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