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Wideband Coupled-Line Microstrip Filters With High-Impedance Short-Circuited Stubs
By: Sangwook Nam; Hee-Ran Ahn;
2011 / IEEE
This item was taken from the IEEE Periodical ' Wideband Coupled-Line Microstrip Filters With High-Impedance Short-Circuited Stubs ' There have been difficulties in realizing wideband coupled-line filters with microstrip technology due to tight couplings demanded at input and output ports. To solve the problem, a realization method using high-impedance short-circuited stubs is proposed. To verify it, a coupled-line microstrip filter with more than 65% bandwidth is fabricated at 3 GHz and measured. Measured results are in good agreement with prediction, showing that the measured return and insertion losses are better than 18 and 0.85 dB, respectively, within more than 65% bandwidth.
Frequency 3 Ghz
Wideband Coupled-line Microstrip Filter
Wideband Coupled-line Microstrip Filters
High-impedance Short-circuited Stubs (hisss)
Fields, Waves And Electromagnetics
High-impedance Short-circuited Stub