CN208705402U

CN208705402U - Highpowerpulse standing wave signal detection device

Info

Publication number: CN208705402U
Application number: CN201821452379.XU
Authority: CN
Inventors: 任彦闯; 张江涛
Original assignee: Shijiazhuang Rexun Electronic Technology Co Ltd
Current assignee: Shijiazhuang Rexun Electronic Technology Co Ltd
Priority date: 2018-09-06
Filing date: 2018-09-06
Publication date: 2019-04-05
Anticipated expiration: 2028-09-06

Abstract

The utility model discloses a kind of highpowerpulse standing wave signal detection devices, including circulator, power attenuator A, power attenuator B, power attenuator C, coupler, logarithmic detector A, logarithmic detector B, power termination and single-chip microcontroller, the reflection power of circulator third output port output highpowerpulse signal, reflection power first passes through power attenuator B, inputting single-chip microcontroller after logarithmic detector B detection after power attenuation, the highpowerpulse signal of circulator second output terminal mouth output is after power attenuator A decaying through the power of coupler coupling again after power attenuator C decaying by inputting single-chip microcontroller after logarithmic detector C detection, single-chip microcontroller is converted and is calculated output standing wave detected value by A/D.The utility model directly reads highpowerpulse standing wave signal detected value by the port RS232, can intuitively monitor the great fluctuation process that port standing wave occurs when highpowerpulse signal works, play function for monitoring.

Description

Highpowerpulse standing wave signal detection device

Technical field

The utility model belongs to radio frequency arts, and in particular to a kind of highpowerpulse standing wave signal detection device.

Background technique

When microwave signal passes through two-port network, since source impedance and load impedance and the network port can not be complete Match, a part of microwave signal can be reflected.Under normal circumstances, the electromagnetic wave on transmission line be by incidence wave and back wave superposition and At incidence wave and back wave are propagated in different directions, and superposition forms standing-wave ratio, and the measurement parameter of such case is voltage standing wave(VSW) Compare VSWR.It is defined as the ratio between the maxima and minima of signal envelope.Highpowerpulse signal output power in the operating condition Excessive, far beyond test equipment measurement range, directly measurement will will lead to instrument internal device failure.If exported in signal Mouth connection high power attenuator, is then tested using vector network analyzer, will lead to the dynamic of output VSWR test Range sharply declines, test result serious distortion.

Utility model content

The utility model technical issues that need to address are to provide a kind of highpowerpulse letter that can be realized and monitor in real time Number standing wave detecting device.

To solve the above problems, technical solution adopted in the utility model is:

A kind of highpowerpulse standing wave signal detection device, including circulator, power attenuator A, power attenuator B, function Rate attenuator C, coupler, logarithmic detector A, logarithmic detector B, power termination and single-chip microcontroller, shape device third output port connect Power attenuator B input terminal is connect, power attenuator B output end connects logarithmic detector B input terminal, logarithmic detector B output end Connect single-chip microcontroller A/D input terminal all the way.Circulator second output terminal mouth connects power attenuator A input terminal, and power attenuator A is defeated Outlet connects coupler input, and coupler output connects power termination all the way, and coupler output another way connects power Attenuator C input terminal, power attenuator C output end connect logarithmic detector C input terminal, and the connection of logarithmic detector C output end is single Piece machine another way A/D input terminal；Circulator third output port exports the reflection power of highpowerpulse signal, and reflection power is first By power attenuator B, single-chip microcontroller, circulator second output terminal mouth are inputted after power attenuation after logarithmic detector B detection Power of the highpowerpulse signal of output through coupler coupling after power attenuator A decaying is decayed through power attenuator C again Afterwards by inputting single-chip microcontroller after logarithmic detector C detection, the calculating that single-chip microcontroller is subtracted each other by A/D conversion and logarithm calculates signal Return loss, calculated standing wave value by return loss value and exported.

It further, further include the port RS232, the D/A output end of the input terminal connection single-chip microcontroller of the port RS232.

Preferably, the single-chip microcontroller is the single-chip microcontroller with the above A/D conversion of two-way and at least 1 road D/A conversion.

The beneficial effects of adopting the technical scheme are that

The utility model directly reads highpowerpulse standing wave signal detected value by the port RS232 (serial ports), for big The monitoring of pulsed power signal output port standing wave.It can intuitively monitor the port standing wave when highpowerpulse signal works The great fluctuation process of appearance, plays function for monitoring.

Detailed description of the invention

Fig. 1 is the utility model principle figure.

Specific embodiment

The utility model is described in further detail with reference to the accompanying drawing:

As shown in Figure 1, the utility model includes circulator, power attenuator A, power attenuator B, power attenuator C, coupling Clutch, logarithmic detector A, logarithmic detector B, power termination and single-chip microcontroller, wherein shape device third output port connection power declines Subtract device B input terminal, power attenuator B output end connects logarithmic detector B input terminal, and logarithmic detector B output end connects monolithic Machine A/D input terminal all the way.Circulator second output terminal mouth connects power attenuator A input terminal, the connection of power attenuator A output end Coupler input, coupler output connect power termination all the way, and it is defeated that coupler output another way connects power attenuator C Enter end, power attenuator C output end connects logarithmic detector C input terminal, and logarithmic detector C output end connects single-chip microcontroller another way A/D input terminal；Circulator third output port exports the reflection power of highpowerpulse signal, and reflection power first passes through power and declines Subtract device B, inputting single-chip microcontroller after power attenuation after logarithmic detector B detection, the big function of circulator second output terminal mouth output Rate pulse signal passes through logarithm after power attenuator C decaying again through the power of coupler coupling after power attenuator A decaying Single-chip microcontroller is inputted after wave detector C detection, the calculating that single-chip microcontroller is subtracted each other by A/D conversion and logarithm calculates the return loss of signal, Standing wave value is calculated by return loss value and is exported.

For the ease of realizing that directly reading standing wave value is monitored in real time, the utility model further includes that the port RS232 is (serial Communication interface device), the D/A output end of the input terminal connection single-chip microcontroller of the port RS232, the port RS232 can be directly connected to electricity The equipment that standing wave value can be read directly in brain etc., apparatus such as computer directly read standing wave value by asynchronous serial communication.

In order to keep device volume small and exquisite, the single-chip microcontroller is with the above A/D conversion of two-way and at least 1 road D/A conversion Single-chip microcontroller.

The major advantage of the utility model is to solve Vehicles Collected from Market to lack to highpowerpulse standing wave signal monitoring means Problem, high-power lower monitoring are always a key point in monitoring field, the safety test power of many instruments well below Output of products power is directly tested, must damage instrument.And the present invention does not need instrument, is instructed by asynchronous serial communication straight It connects and reads standing wave value, play monitoring standing wave fluctuation, protect system device function, it is convenient and simple practical.

Claims

1. a kind of highpowerpulse standing wave signal detection device, it is characterised in that: decline including circulator, power attenuator A, power Subtract device B, power attenuator C, coupler, logarithmic detector A, logarithmic detector B, power termination and single-chip microcontroller, shape device third is defeated Exit port connects power attenuator B input terminal, and power attenuator B output end connects logarithmic detector B input terminal, logarithmic detector B output end connects single-chip microcontroller A/D input terminal all the way；Circulator second output terminal mouth connects power attenuator A input terminal, and power declines Subtract device A output end connection coupler input, coupler output connects power termination all the way, and coupler output another way connects Power attenuator C input terminal is connect, power attenuator C output end connects logarithmic detector C input terminal, logarithmic detector C output end Connect single-chip microcontroller another way A/D input terminal；Circulator third output port exports the reflection power of highpowerpulse signal, reflection Power first passes through power attenuator B, and single-chip microcontroller is inputted after power attenuation after logarithmic detector B detection, circulator second is defeated Power of the highpowerpulse signal of exit port output through coupler coupling after power attenuator A decaying is again through power attenuator By inputting single-chip microcontroller after logarithmic detector C detection after C decaying, the calculating that single-chip microcontroller is subtracted each other by A/D conversion and logarithm is calculated The return loss of signal is calculated standing wave value by return loss value and is exported.

2. highpowerpulse standing wave signal detection device according to claim 1, it is characterised in that: further include the end RS232 Mouthful, the D/A output end of the input terminal connection single-chip microcontroller of the port RS232.

3. highpowerpulse standing wave signal detection device according to claim 1 or 2, it is characterised in that: the single-chip microcontroller For the single-chip microcontroller with the above A/D conversion of two-way and at least 1 road D/A conversion.