Variable mismatched load device, radio frequency device and standing-wave ratio and phase regulation method

Abstract

The invention is applicable to mobile communication field and provides a variable mismatch load device, a RF device and a standing wave ratio and phase regulating method; the variable mismatch load device comprises a power-dividing combining unit, a first isolator, an amplitude phase regulator and a power amplifier; the common terminal of the power-dividing combining unit is connected with a measured part; the first isolation end of the power-dividing combining unit is connected with the power load through the first isolator; the second isolation end of the power-dividing combining unit is connected with the input end of the amplitude phase regulator; the output end of the amplitude phase regulator is connected with the input end of the power amplifier; the output end of the power amplifier is connected with the first isolation end of the power-dividing combining unit through the first isolator. The variable mismatch load device provided by the invention adopts the power amplifier for gain compensation and can generate any standing wave state unrelated to own part insertion loss; meanwhile, the variable mismatch load device has the characteristics of fast dynamic regulation speed of output parameters and high regulation accuracy.

Description

technical field [0001] The invention belongs to the field of mobile communication, and in particular relates to a variable mismatch load device, a radio frequency device and a standing wave ratio and phase adjustment method. Background technique [0002] Standing wave detection devices are widely used in various fields such as communication, network, and military industry, and variable mismatch load devices are used to verify the performance of standing wave detection devices; traditional variable mismatch load devices mainly use passive devices (including phase shifting device, attenuator) as the main body, using the reflection at the output end to make the signal pass through the phase shifter and variable attenuator twice to obtain a reflected signal, and adjust the variable mismatch load device by adjusting the phase shifter and attenuator Change. [0003] Since the generated reflected signal needs to pass through the device of the variable mismatch load device twice, i...

AI Technical Summary

Problems solved by technology

In addition, during the modulation process, the standing wave of the device itself also greatly interferes with the reflected signal, which affects the test accuracy and test efficiency

[0004] At the same time, since the variable mismatch load device uses passive devices, in order to meet the requirements of insertion loss, the physical volume is often large and the cost is high; moreover, once the insertion loss of these passive devices is large, it will make certain mismatch states impossible. accomplish

For example, when the differential loss of a passive device is 2.0dB, according to the principle of reflection, the lowest return loss it can produce is 4dB, and it cannot be realized if it is lower than this value.

At the same time, if total reflection is required, total reflection cannot be achieved due to the insertion loss of passive components

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