Analysis and measurement of transmission passive intermodulation distortions

2017 ◽  
Author(s):  
Feng Gao ◽  
Yi Gao ◽  
Runhong Shan
Keyword(s):  
Passive Intermodulation ◽  
Intermodulation Distortions

scholarly journals Asymmetrical passive intermodulation distortions of memristors with mathematical behavior models

AIP Advances ◽  
2016 ◽  
Vol 6 (10) ◽  
pp. 105305 ◽  
Author(s):  
Yongle Wu ◽  
Qiuyan Jin ◽  
Weimin Wang ◽  
Yuanan Liu
Keyword(s):  
Passive Intermodulation ◽  
Intermodulation Distortions ◽  
Behavior Models ◽  
Mathematical Behavior

Mitigating the Effects of Non-Linear Distortion Using Polarizers in Microwave Photonic Link

2019 ◽  
Vol 0 (0) ◽  
Author(s):  
Sarika Singh ◽  
Sandeep K. Arya ◽  
Shelly Singla
Keyword(s):  
Dynamic Range ◽  
Extinction Ratio ◽  
Polarization Angle ◽  
Third Order ◽  
Microwave Photonic ◽  
Linear Behavior ◽  
Spurious Free Dynamic Range ◽  
Non Linear ◽  
Intermodulation Distortions ◽  
Insertion Losses

AbstractA scheme to suppress nonlinear intermodulation distortion in microwave photonic (MWP) link is proposed by using polarizers to compensate inherent non-linear behavior of dual-electrode Mach-Zehnder modulator (DE-MZM). Insertion losses and extinction ratio have also been considered. Simulation results depict that spurious free dynamic range (SFDR) of proposed link reaches to 130.743 dB.Hz2/3. A suppression of 41 dB in third order intermodulation distortions and an improvement of 15.3 dB is reported when compared with the conventional link. In addition, an electrical spectrum at different polarization angles is extracted and 79^\circ is found to be optimum value of polarization angle.

scholarly journals A Method for Measuring the Maximum Measurable Gain of a Passive Intermodulation Chamber

Electronics ◽  
2021 ◽  
Vol 10 (7) ◽  
pp. 770
Author(s):  
Zhanghua Cai ◽  
Yantao Zhou ◽  
Lie Liu ◽  
Francesco de Paulis ◽  
Yihong Qi ◽  
...  
Keyword(s):  
Approximate Method ◽  
Path Loss ◽  
High Gain ◽  
Directional Antenna ◽  
Anechoic Chamber ◽  
Measurement Interval ◽  
High Gain Antenna ◽  
Specific Relationship ◽  
Method Of Measurement ◽  
Passive Intermodulation

This paper presents an approximate method that allows the calculation of the maximum measurable gain (MMG) in an anechoic chamber. This method is realized by using a low passive intermodulation (PIM) medium-gain directional antenna. By reducing the distance between the antenna and the wall of the chamber to reduce path loss, the purpose of replacing a high-gain antenna with a medium-gain antenna is achieved. The specific relationship between distance and equivalent gain is given in this paper. The measurement interval is determined by the 3 dB beamwidth of the measurement antenna to scan the whole chamber. A set of corresponding data for the residual PIM level and the MMG of the chamber can be obtained by the method of measurement outlined herein. The feasibility of this method was verified by measurements in two PIM measurement chambers.

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