A high-power coupling detector for ultra-short waves

Abstract

The application provides an ultrashort wave high-power coupling detector, which comprises a coil mutual inductor T1, a coil mutual inductor T2, a detection diode D1 and a detection diode D2, the input end of the coil mutual inductor T1 is electrically connected with the output end of an ultrashort wave power amplifier, the output end of the coil mutual inductor T1 is divided into two paths, one path is electrically connected with one end of a coupling capacitor C4, and the other path is electrically connected with one end of a load resistor R10, the other end of the load resistor R10 is electrically connected with a load resistor R5, the coil mutual inductor T2 is connected between the load resistor R10 and the load resistor R5, the output end of the coil mutual inductor T2 is electrically connected with the input end of the coil mutual inductor T1, the other end of the coupling capacitor C4 is divided into two paths, one path is electrically connected with a pi attenuator R11, and the other path is electrically connected with one end of a pi attenuator R13. The application is suitable for coupling and detection of an ultrashort wave high-power signal, has low cost, simple structure, is easy to debug, has good directivity and coupling coefficient flatness, and can bear a power of 1kW.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of coupling detectors, in particular to a low-cost ultrashort wave high-power coupling detector, which is used in the rear end of an ultrashort wave power amplifier and has high power bearing capacity and good directivity and coupling flatness. BACKGROUND

[0002] The coupling detector is used for monitoring power and obtaining a direct current voltage quantization value. At present, most of the ultrashort wave high-power couplers on the market are large in size and high in price, which brings additional cost to design and production. Therefore, it is an urgent problem to develop a low-cost ultrashort wave high-power coupling detector. SUMMARY

[0003] Therefore, the present application aims to provide a coupling detector which is low in cost, large in power bearing capacity, and has high power bearing capacity and good directivity and coupling flatness.

[0004] To solve the above technical problems, the present application adopts the technical scheme of:

[0005] An ultrashort wave high-power coupling detector, comprising a coil mutual inductor T1, a coil mutual inductor T2, a detection diode D1 and a detection diode D2, wherein the input end of the coil mutual inductor T1 is electrically connected with the output end of an ultrashort wave power amplifier, the output end of the coil mutual inductor T1 is divided into two paths, one path is electrically connected with one end of a coupling capacitor C4, and the other path is electrically connected with one end of a load resistor R10, the other end of the load resistor R10 is electrically connected with a load resistor R5, the coil mutual inductor T2 is connected between the load resistor R10 and the load resistor R5, the output end of the coil mutual inductor T2 is electrically connected with the input end of the coil mutual inductor T1, the other end of the coupling capacitor C4 is divided into two paths, one path is electrically connected with a pi attenuator R11, and the other path is electrically connected with one end of a pi attenuator R13, the other end of the pi attenuator R13 is divided into two paths, one path is electrically connected with a pi attenuator R12, and the other path is electrically connected with the anode of the detection diode D1, the cathode of the detection diode D1 is electrically connected with a load resistor R1, the filter capacitor C1 is connected in parallel across the load resistor R1, the load resistor R5 is also electrically connected with one end of a coupling capacitor C3, the other end of the coupling capacitor C3 is divided into two paths, one path is electrically connected with a pi attenuator R15, and the other path is electrically connected with one end of a pi attenuator R16, the other end of the pi attenuator R16 is divided into two paths, one path is electrically connected with a pi attenuator R14, and the other path is electrically connected with the anode of the detection diode D2, the cathode of the detection diode D2 is electrically connected with a load resistor R2, and the filter capacitor C2 is connected in parallel across the load resistor R2.

[0006] Further, the coil mutual inductor T1 is a current transformer.

[0007] Further, the coil mutual inductor T2 is a voltage mutual inductor.

[0008] Further, the resistance values of the load resistors R5 and R10 are related to the connected load, and are generally 50Ω.

[0009] Compared with the prior art, the ultrashort wave high-power coupling detector has the following advantages: can be applied to the coupling detection after the ultrashort wave power amplifier, has good directivity and coupling flatness, can withstand a power of 1kW or more, has low cost, and is easy to debug. BRIEF DESCRIPTION OF DRAWINGS

[0010] The accompanying drawings, which form a part of the present application, are used to provide further understanding of the present application, and serve as an aid in explaining the exemplary embodiments of the present application and their descriptions, and do not constitute improper limitations on the present application. In the drawings:

[0011] Figure 1 is a circuit diagram of the present application. DETAILED DESCRIPTION

[0012] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0013] In the description of the present application, it should be understood that the orientations or positional relationships indicated by the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", etc. are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second", etc. can explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0014] In the description of the present application, it should be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood in a broad sense, for example, it can be a fixed connection, or a detachable connection, or an integral connection; it can be a mechanical connection, or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood through specific circumstances.

[0015] The application will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

[0016] As Figure 1 shown, a design of low-cost ultra-short wave high-power coupling detector includes two coil transformers "T1" and "T2", some discrete resistors and capacitors, and two detection diodes. The "T1" is a current transformer, the "T2" is a voltage transformer, the "D1" and "D2" are detection diodes, the "R5" and "R10" are matching loads, the resistance values of which are related to the output connected load, and are generally 50Ω, the "R11", "R12", "R13" and "R14", "R15", "R16" are "π-type attenuators", which are used to adjust the power input to the detection diode, the "C3" and "C4" are coupling capacitors, the "C1" and "C2" are filter capacitors of the detection diode, and the "R1" and "R2" are load resistors. The application is suitable for coupling and detection of ultra-short wave high-power signals, has low cost, simple structure, easy debugging, good directivity and coupling coefficient flatness, and can bear a power of 1kW.

[0017] Embodiment 1: An ultra-short wave high-power coupling detector includes a coil transformer T1, a coil transformer T2, a detection diode D1 and a detection diode D2, the input end of the coil transformer T1 is electrically connected with the output end of an ultra-short wave power amplifier, the output end of the coil transformer T1 is divided into two paths, one path is electrically connected with one end of a coupling capacitor C4, and the other path is electrically connected with one end of a load resistor R10, the other end of the load resistor R10 is electrically connected with a load resistor R5, the coil transformer T2 is connected between the load resistor R10 and the load resistor R5, the output end of the coil transformer T2 is electrically connected with the input end of the coil transformer T1, the other end of the coupling capacitor C4 is divided into two paths, one path is electrically connected with a π-type attenuator R11, and the other path is electrically connected with one end of a π-type attenuator R13, the other end of the π-type attenuator R13 is divided into two paths, one path is electrically connected with a π-type attenuator R12, and the other path is electrically connected with the anode of the detection diode D1, the cathode of the detection diode D1 is electrically connected with a load resistor R1, the filter capacitor C1 is connected in parallel across the load resistor R1, the load resistor R5 is also electrically connected with one end of a coupling capacitor C3, the other end of the coupling capacitor C3 is divided into two paths, one path is electrically connected with a π-type attenuator R15, and the other path is electrically connected with one end of a π-type attenuator R16, the other end of the π-type attenuator R16 is divided into two paths, one path is electrically connected with a π-type attenuator R14, and the other path is electrically connected with the anode of the detection diode D2, the cathode of the detection diode D2 is electrically connected with a load resistor R2, and the filter capacitor C2 is connected in parallel across the load resistor R2.

[0018] The coil mutual inductor T1 is a current mutual inductor, and the coil mutual inductor T2 is a voltage mutual inductor. The resistance values of the load resistors R5 and R10 are related to the connected load, and are generally 50Ω. The coupler can bear continuous wave power of up to 1kW, and the insertion loss is less than 0.2dB. The coupler has good directivity, and the directivity in the ultra-short wave band is greater than 30dB. The coupling flatness of the coupler in the ultra-short wave band is less than 0.3dB. The coupler is composed of only enameled wire and some discrete devices, and has low cost and strong practical value.

[0019] The above merely describes preferred embodiments of the present application and is not used to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A high-power coupling detector for ultra-shortwave, characterized in that: The system includes coil transformers T1 and T2, detector diodes D1 and D2. The input terminal of coil transformer T1 is electrically connected to the output terminal of an ultra-shortwave power amplifier. The output terminal of coil transformer T1 is split into two paths: one path is electrically connected to one end of coupling capacitor C4, and the other path is electrically connected to one end of load resistor R10. The other end of load resistor R10 is electrically connected to load resistor R5. Coil transformer T2 is connected between load resistors R10 and R5. The output terminal of coil transformer T2 is electrically connected to the input terminal of coil transformer T1. The other end of coupling capacitor C4 is split into two paths: one path is electrically connected to a π-type attenuator R11, and the other path is electrically connected to one end of a π-type attenuator R13. The other end of 13 is split into two paths: one is electrically connected to the π-type attenuator R12, and the other is electrically connected to the anode of the detector diode D1. The cathode of the detector diode D1 is electrically connected to the load resistor R1. A filter capacitor C1 is connected in parallel across the load resistor R1. The load resistor R5 is also electrically connected to one end of the coupling capacitor C3. The other end of the coupling capacitor C3 is split into two paths: one is electrically connected to the π-type attenuator R15, and the other is electrically connected to one end of the π-type attenuator R16. The other end of the π-type attenuator R16 is split into two paths: one is electrically connected to the π-type attenuator R14, and the other is electrically connected to the anode of the detector diode D2. The cathode of the detector diode D2 is electrically connected to the load resistor R2. A filter capacitor C2 is connected in parallel across the load resistor R2.

2. The UHF high-power coupled detector according to claim 1, characterized in that: The coil transformer T1 is a current transformer.

3. The UHF high-power coupled detector according to claim 1, characterized in that: The coil transformer T2 is a voltage transformer.

4. The UHF high-power coupled detector according to claim 1, characterized in that: The resistance values ​​of both load resistor R5 and load resistor R10 are 50Ω.

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