Download Project (410 KB)
A band-stop filter is used to remove a narrow band of frequencies from the signal path of a receiver or a transmitter. For a conventional notch filter, the maximum attenuation (notch depth) occurs at a single frequency midway between the specified edges (3dB) of the lower and upper pass-bands, and the selectivity can be described as the ratio of the notch depth to the bandwidth between the edges of the pass-bands. The unloaded quality factor Q (Qu) of the filter's resonators limits both notch depth and selectivity. This proposal suggests an optimized version of varactor-tuned microwave band-stop filter designed using a novel inductive spiral signal line incorporated with shunt varactors featuring an expected Qu of ~110 and notch depth of ~30dB at center frequencies from 2GHz to 8GHz.
Primary Advisor's Department
Electrical and Computer Engineering
Stander Symposium poster
Arts and Humanities | Business | Education | Engineering | Life Sciences | Medicine and Health Sciences | Physical Sciences and Mathematics | Social and Behavioral Sciences
"A Novel High Quality Factor Tunable Band-stop Filter for Microwave Applications" (2014). Stander Symposium Projects. 382.
Arts and Humanities Commons, Business Commons, Education Commons, Engineering Commons, Life Sciences Commons, Medicine and Health Sciences Commons, Physical Sciences and Mathematics Commons, Social and Behavioral Sciences Commons