Title :
A high-selectivity low-pass filter using a new coplanar waveguide with tuning septums
Author :
Pang-Cheng Hsu ; Cam Nguyen
Author_Institution :
Dept. of Electr. Eng., Texas A&M Univ., College Station, TX, USA
Abstract :
A new low-pass filter with a high selectivity at a cutoff frequency of 4 GHz has been developed with insertion loss and return loss of less than 0.5 dB and more than 20 dB, respectively. The low-pass filter employs a new coplanar waveguide (CPW) with underside tuning septums which is suitable for microwave integrated circuits. The new transmission line has a wider characteristic impedance range than the conventional CPW or microstrip line. Its characteristics are investigated using the spectral-domain approach.
Keywords :
coplanar waveguides; electric impedance; low-pass filters; microstrip lines; microwave filters; spectral-domain analysis; tuning; 0.5 dB; 20 dB; 4 GHz; characteristic impedance range; coplanar waveguide; cutoff frequency; high-selectivity low-pass filter; insertion loss; microwave integrated circuits; return loss; spectral-domain approach; transmission line; tuning septums; Circuit optimization; Coplanar transmission lines; Coplanar waveguides; Cutoff frequency; Distributed parameter circuits; Impedance; Insertion loss; Low pass filters; Microwave filters; Microwave integrated circuits;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1995. AP-S. Digest
Conference_Location :
Newport Beach, CA, USA
Print_ISBN :
0-7803-2719-5
DOI :
10.1109/APS.1995.530238
