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Standing wave detection circuit

A standing wave detection and circuit technology, which is applied in the measurement of electrical variables, resistance/reactance/impedance, measurement devices, etc., can solve the problems that the detection circuit cannot be flexibly applied to the RF power amplifier circuit, uses many devices, and the circuit form is complex. , to reduce costs, simplify design and improve reliability

Inactive Publication Date: 2007-05-09
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Not only does the circuit described in this patent have a complex form, many devices are used, and the cost of implementation is high, but also a separate unit needs to be designed for standing wave detection, so that the detection circuit cannot be flexibly applied to a radio frequency power amplifier circuit, and can be poor portability

Method used

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  • Standing wave detection circuit
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Embodiment Construction

[0030] Accompanying drawing 1 is each part composition block diagram of the present invention, and the effect and the function of its each part are as follows:

[0031] Directional coupler: used to sample the forward output power;

[0032] Circulator: used to realize the separation of forward power and reverse power;

[0033] Logarithmic detector: used for power detection, converting the detected power value into a voltage value;

[0034] Reverse power sampler: used to sample the reflected power;

[0035] Reflected power load: energy used to absorb reflected power;

[0036] Comparison amplifier: used to compare and amplify the forward and reverse power detection values;

[0037] Concrete workflow of the present invention is:

[0038] When the RF power signal is input to the circulator, then output to a directional coupler, and then output, part of the output signal is taken out through the directional coupler and sent to the logarithmic detector for forward power detection...

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Abstract

A detection circuit of standing wave is prepared as separating radio frequency power signal by circulator, outputting forward power signal to positioning coupler for sampling there then sending signal to logarithm rectifier for carrying out detection, carrying out power detection by logarithm rectifire after reflection power signal is sampled at reflection power sampler, outputting detection signal of sanding wave after detection value of forward reversed power is compared and amplified by comparison-amplifier.

Description

technical field [0001] The present invention relates to the field of wireless communication, in particular to a standing wave detection circuit used to detect the standing wave ratio of the interface between the transmitter and the antenna feeder system, and output a DC signal, which is provided to the wireless system monitoring center and used as an alarm level criterion . Background technique [0002] In the field of wireless communication, the matching of the transmitter of the base station unit and the antenna feeder system of the base station affects the quality of receiving and transmitting wireless signals, which is generally recognized in practical applications. The standing wave detection technology is actually a power detection for the forward and reverse power of the system, and the detection circuit forms used are also various. [0003] A standing wave detection technology of "standing wave detection circuit and detection method thereof" is disclosed in the prio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R27/06H04B1/04
Inventor 雷保国王长明文耀彤侯志强
Owner ZTE CORP