01 Apr, 2011 by Marek Antkowiak
Testing amplifiers for fourth-generation (4G) wireless 
networks such as LTE and WiMAX can be troublesome because of the passive intermodulation (PIM) distortion generated by passive test components especially high power attenuators.
RD Microwaves has developed their model AT-A09 attenuation subsystem for wireless bands from 400 to 2900 MHz; it virtually eliminates PIM in the attenuation path of a test system, with a measured level of -170 dBc or better over those wireless frequency bands.
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