Title :
Intermodulation distortion in narrowband amplifier circuits
Author :
Mazzaro, Gregory J. ; Steer, Michael B. ; Gard, Kevin G.
Author_Institution :
Dept. of Electr. & Comput. Eng., North Carolina State Univ., Raleigh, NC, USA
fDate :
9/1/2010 12:00:00 AM
Abstract :
The contribution of bandpass filter memory to intermodulation distortion in narrowband amplifier circuits is examined. A method for generating multisines from filtered switched tones is presented, and techniques for measuring an amplifier´s IP3 and extracting a filter´s passband using these multisines are developed. It is shown that amplified filtered pulses produce intermodulation distortion in frequency-hopping communication systems. In the experimental study, 465 and 900-MHz Chebyshev bandpass filters are considered.
Keywords :
Chebyshev filters; amplifiers; band-pass filters; frequency hop communication; intermodulation distortion; Chebyshev bandpass filters; bandpass filter memory; filtered switched tones; frequency 465 MHz; frequency 900 MHz; frequency-hopping communication systems; intermodulation distortion; narrowband amplifier circuits;
Journal_Title :
Microwaves, Antennas & Propagation, IET
DOI :
10.1049/iet-map.2009.0281
