Passive Intermodulation Models of Current Distortion in Electrical Contact Points

Linear-Nonlinear Interaction and Passive Intermodulation Distortion

This paper describes several consequences of a linear–nonlinear interaction that was recently found to be of importance in microwave circuits that produce passive intermodulation (PIM) distortion. This paper briefly discusses how this linear–nonlinear interaction operates in an example system. It then discusses how an understanding of the linear–nonlinear interaction allows us to distinguish be...

Passive Intermodulation Distortion in Connectors, Cable and Cable Assemblies

Introduction: Although not a new problem and well known to the satellite communications and microwave trunking industries, until the use of cellular phones became widespread, Passive Intermodulation Distortion (PIM) was of little concern to the connector designer. Until five years ago, most connector engineers had never heard of the phenomenon. Now, due to the frequency plans of today’s modern ...

Intermodulation Distortion

Studies on Microwave Antennas: Passive Intermodulation Distortion in Antenna Structures and Design of Microstrip Antenna Elements

Passive intermodulation (PIM) measurements of antennas and the design of dual-polarised microstrip antenna elements are investigated in this thesis. The emphasis is on the development of a passive intermodulation source localisation method and on the studies of the PIM source behaviour under various impedance loading conditions. Passive intermodulation distortion can be harmful in wireless comm...

Thermal Characterisation and Intermodulation Distortion in

The effect of temperature (-25 to 100C) on two-tone Intermodulation Distortion (IMD) characteristics of InGaP/GaAs microwave DHBTs is studied. This is carried out through measurement with the results being compared to a simple analytical technique. The results indicated that varying the temperature has a significant impact on the IMD characteristics. The variations of small signal parameters wi...