Title :
Quarter-Wavelength Coupled Variable Bandstop and Bandpass Filters Using Varactor Modes
Author :
Toyoda, Sahihiro
Abstract :
A quarter-wavelength coupled bandstop filter rising varactor diodes for the 6-GHz band has been proposed and tested. Frequency giving maximum attenuation varies from 4.4 GHz-7 GHz. A quarter-wavelength coupled variable bandpass filter using varactor diodes for the 4-GHz band is also proposed and tested. The passband width varies from 730 MHz-1.22 GHz. The center frequency of the filter can also be changed.
Keywords :
Attenuation; Band pass filters; Coupling circuits; Diodes; Frequency; Microwave filters; Passband; Power transmission lines; RLC circuits; Varactors;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
DOI :
10.1109/TMTT.1982.1131266
