Title :
A Miniaturized Dual-Mode Ring Bandpass Filter
Author :
Hsu, Hung-Wei ; Lai, Chi-Hui ; Ma, Tzyh-Ghuang
Author_Institution :
Dept. of Electr. Eng., Nat. Taiwan Univ. of Sci. & Technol., Taipei, Taiwan
Abstract :
A novel miniaturized dual-mode ring bandpass filter is proposed in this letter. The miniaturization is accomplished by slow-wave synthesized microstrip lines in an asymmetrical form. At the input/output ports, two saw-toothed coupling structures with quarter-wavelength open-circuited stubs are used to provide tight coupling. The miniaturized filter features a very compact size and the in-band responses are comparable to its conventional counterpart. The design methodology, circuit topology, and simulated and measured results are investigated and compared.
Keywords :
band-pass filters; microstrip lines; network topology; resonator filters; circuit topology; dual-mode ring bandpass filter; quarter-wavelength open-circuited stubs; saw-toothed coupling structures; slow-wave synthesized microstrip lines; Band pass filters; Couplings; Filtering theory; Microstrip; Optical ring resonators; Passband; Q factor; Dual-mode resonator; filter; synthesized line;
Journal_Title :
Microwave and Wireless Components Letters, IEEE
DOI :
10.1109/LMWC.2010.2063697
