Title :
Tunable Filters With Nonuniform Microstrip Coupled Lines
Author :
Koochakzadeh, Masoud ; Abbaspour-Tamijani, Abbas
Author_Institution :
Dept. of Electr. Eng., Arizona State Univ., Tempe, AZ
fDate :
5/1/2008 12:00:00 AM
Abstract :
A basic wideband tunable filter design based on combline topology is presented. At the presence of the parasitic effects, the structure of the filter must be modified by introducing additional degrees of freedom to the geometry of the coupled line segment. A design procedure involving iterative steps will be described. This procedure is used to design two bandpass filters with more than one octave tuning range in the UHF band. The experimental results are presented for the filter prototypes implemented using printed circuit boards and PIN diodes.
Keywords :
band-pass filters; microstrip couplers; PIN diodes; bandpass filters; nonuniform microstrip coupled lines; octave tuning range; parasitic effects; printed circuit boards; tunable filters; wideband tunable filter design; Intermodulation; PIN diodes; nonlinearity; software defined radio; switchable filters; tunable filters;
Journal_Title :
Microwave and Wireless Components Letters, IEEE
DOI :
10.1109/LMWC.2008.922115
