Design of Fixed- and Varactor-Tuned Bandstop Filters with Spurious Suppression
NAVAL RESEARCH LAB WASHINGTON DC
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A new spurious suppression method for bandstop filters based on constructive interference is presented. The technique is successfully applied to realize a fixed-tuned filter with an upper passband extending more than 9 times the fundamental bandstop response, as well as a varactor-tuned bandstop filter with an upper passband extending to 8.9 times the fundamental.
- Electrical and Electronic Equipment