A method and device for nonlinear test positioning based on passive intermodulation radiation field
A passive intermodulation and radiation field technology, which can be used in measurement devices, measurement of electricity, and measurement of electrical variables, etc., can solve the problems of narrow-band air attenuation carrier irradiation difficulties, etc., and achieve low-modular passive intermodulation testing, low cost, To achieve the effect of reuse
Inactive Publication Date: 2021-03-23
TIANJIN UNIV
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[0007] The purpose of the present invention is to overcome the narrowband, air attenuation and carrier irradiation difficulties of the existing passive intermodulation test based on the antenna radiation field, and provide a method and device for nonlinear test positioning based on the passive intermodulation radiation field. Improve the accuracy and efficiency of intermodulation testing
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[0045] 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.
[0046] The non-linear test positioning method based on the passive intermodulation radiation field of the present invention is a slotted coaxial non-linear test positioning method based on leakage window radiation, and uses the slotted coaxial line as the radiation source to irradiate the test piece and receive The method of intermodulation signal can be used with different single slotted coaxial and double slotted coaxial.
[0047] Use a single coaxial, both as an electromagnetic field emission source and as an intermodulation signal receiving unit, when used as a radiation source to irradiate the DUT, it is tested through a periodic array or a single slit window to irradiate the DUT...
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The invention discloses a method and device for nonlinear test positioning based on a passive intermodulation radiation field. The method for test positioning adopts a combined connection of slotted coaxality and different intermodulation testers, and the outer conductor of the slotted coaxality is formed with a slotting as a carrier emission and intermodulation receiving window. The connection ofthe slotted coaxality and the intermodulation testers realizes carrier transmission and intermodulation signal reception, a carrier transmission port and an intermodulation receiving port are used asphysical reference points, and the relative position prediction of power measurement of the intermodulation abnormal points is realized by using the physical reference points. The method and device provided by the invention can improve the accuracy and efficiency of the intermodulation test.
Description
technical field [0001] The invention relates to the technical field of microwave circuit device detection, in particular to a method and device for nonlinear test positioning based on passive intermodulation radiation field. Background technique [0002] When two or more carrier signals pass through a component with nonlinear response, a new signal different from the carrier frequency will be generated. This phenomenon is called passive intermodulation. Passive intermodulation (passive intermodulation PIM) refers to the spurious signals generated by the mixing of two or more frequencies of transmitting carriers in passive nonlinear devices, which have caused interference to modern high-power, multi-channel communication systems. [0003] The current method for passive intermodulation radiation field testing is mainly based on the antenna pair structure. The carrier antenna is used to irradiate the DUT, and another receiving antenna with selective characteristics is used to r...
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IPC IPC(8): G01R31/00
CPCG01R31/00
Inventor 陈雄
Owner TIANJIN UNIV