Quarter-wavelength coupled variable bandstop and bandpass filters using varactor diodes
Abstract
A quarter-wavelength coupled bandstop filter using 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.
- Publication:
-
IEEE Transactions on Microwave Theory Techniques
- Pub Date:
- September 1982
- DOI:
- 10.1109/TMTT.1982.1131266
- Bibcode:
- 1982ITMTT..30.1387T
- Keywords:
-
- Bandpass Filters;
- Frequency Control;
- Frequency Response;
- Microwave Attenuation;
- Microwave Filters;
- Varactor Diodes;
- Coupling Circuits;
- Design Analysis;
- Electronic Control;
- Equivalent Circuits;
- Network Synthesis;
- Superhigh Frequencies;
- Wavelengths;
- Electronics and Electrical Engineering