Abstract
Filters are useful components in electronic design. They are required in any communication systems for frequency selection. They allow certain frequencies to pass and reject unwanted frequencies. Microwave signals require special circuits and transmission lines and therefore the design of microwave filters are complex. Modern communication systems require operation in more than one frequency band therefore the microwave filter should be able to operate with more than one center frequency. A tunable microwave bandpass filter is implemented using microstrip lines. The filter is designed using multimode resonator (MMR) and coupled line transmission lines. The filter is simulated in ADS 2009 with substrate material being RO4003C whose dielectric constant is 3.365. Centre frequency of the designed filter is tuned with the aid of varactor diodes. In the passband insertion loss of 1.5 dB and return loss of 25 dB was achieved.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
