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Intermodulation amplitude modulation and phase modulation generation method and circuit based on coherent nonlinear synthesis

A technology of coherent synthesis and phase modulation circuit, applied in electrical components, modulated carrier systems, digital transmission systems, etc., can solve the problems of difficulty in phase modulation of nonlinear signals, interfere with the effect of phase adjustment of nonlinear signals, etc., and achieve a simple and efficient implementation scheme. , The circuit realizes the effect of simplified structure and high-efficiency scheme

Inactive Publication Date: 2019-09-17
TIANJIN UNIV
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Problems solved by technology

Due to the correlation between the excitation signal and the generated nonlinear signal, traditionally relying on the phase shifter to achieve phase adjustment will bring difficulties in the phase modulation of the nonlinear signal, and the potential nonlinear effect of the phase shifter will also interfere with the phase adjustment effect of the nonlinear signal

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  • Intermodulation amplitude modulation and phase modulation generation method and circuit based on coherent nonlinear synthesis
  • Intermodulation amplitude modulation and phase modulation generation method and circuit based on coherent nonlinear synthesis
  • Intermodulation amplitude modulation and phase modulation generation method and circuit based on coherent nonlinear synthesis

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Embodiment Construction

[0024] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0025] The intermodulation, amplitude modulation, and phase modulation generation method based on coherent nonlinear synthesis of the present invention is to make the carrier power go through a low IM power distribution network and then go through different phase delay networks to reach multiple adjustable nonlinear sources. The linear source passively generates adjustable nonlinear signal amplitudes, and returns these signals to the output port of the circuit along the coherent network and performs amplitude synthesis to realize nonlinear adjustment.

[0026] In the present invention, the phase can be adjusted based on multi-channel amplitude-adjustable intermodulation sources throug...

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Abstract

The invention discloses an intermodulation amplitude modulation and phase modulation generation method and circuit based on coherent nonlinear synthesis. According to the method, the adjustability of intermodulation amplitude and phase characteristics is realized based on amplitude synthesis, two or more paths of amplitude-adjustable nonlinear sources are used as intermodulation signal sources, and vector summation of nonlinear signals is realized by constructing a nonlinear signal coherent power synthesis and power distribution network, so that the adjustability of the amplitude and phase characteristics of the intermodulation signals is realized. According to the invention, the circuit realization structure is greatly simplified, and the problem of interference caused by the nonlinear spectrum components of the traditional phase shifter is solved.

Description

technical field [0001] The invention relates to the technical field of microwave circuit devices, in particular to an intermodulation amplitude modulation and phase modulation generation method and circuit based on coherent nonlinear synthesis. Background technique [0002] Since the intermodulation (Intermodulation, IM) mechanism is complex, the quantification of the intermodulation mainly depends on the experimental test. Intermodulation test is a typical radio frequency test method, and improving its test accuracy is the focus of attention in the field of IM measurement. Accurate IM testing especially requires precise RF modules to guarantee, meanwhile, a good calibration reference source is also an indispensable part to ensure testing accuracy. [0003] The currently commonly used IEC62037 test standard is based on a mathematical method for error analysis, and the error item given by it is the maximum value of the error. In the actual test operation, although the test ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L27/36
CPCH04L27/362
Inventor 陈雄
Owner TIANJIN UNIV
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