Accession Number:

ADA537650

Title:

Passive Enhancement of Resonator Q in Microwave Notch Filters

Descriptive Note:

Conference paper

Corporate Author:

NAVAL RESEARCH LAB WASHINGTON DC ELECTRONICS SCIENCE AND TECHNOLOGY DIV

Personal Author(s):

Report Date:

2004-06-01

Pagination or Media Count:

5.0

Abstract:

The lumped-element bridged-T notch filter concept is extended to reciprocal distributed-element microwave filters. A prototype microstrip bridged-T notch filter employing single-mode resonators is described that enhances the effective resonator Qu by a factor of 325, while a different microstrip filter topology with a triple-mode resonator is described that enhances the effective resonator Qu by a factor of 89. The new notch filters can be either partly reflective or fully absorptive within the stopband. Additional enhanced-Qu notch filter topologies, such as a hybrid-coupler notch filter, that include at least two resonances and at least two signal paths are suggested.

Subject Categories:

  • Electrical and Electronic Equipment
  • Electricity and Magnetism
  • Radiofrequency Wave Propagation

Distribution Statement:

APPROVED FOR PUBLIC RELEASE