Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
6879420 | AEU - International Journal of Electronics and Communications | 2018 | 9 Pages |
Abstract
This paper presents a compact wideband bandpass filter for TETRA band applications. The proposed filter design is based on a quad mode resonator designed using small rectangular loop loaded with four Stepped Impedance Stubs (SISs) and a short circuit stub. The four modes of the resonator help in generating a wide passband. The use of SISs makes the filter compact. In addition to four transmission poles, the resonator inherently generates a transmission zero above the higher end of passband. Two transmission zeros are generated by the input/output coupling which helps in increasing the selectivity and also for achieving wide stopband. This filter provides a 3â¯dB fractional bandwidth of 30.33% and maximum insertion loss of 1.3â¯dB at the center frequency 0.36â¯GHz with a compact size of 0.125 λg à 0.085 λg (4.1â¯Ãâ¯2.78â¯cm2).
Keywords
Related Topics
Physical Sciences and Engineering
Computer Science
Computer Networks and Communications
Authors
Vinay Kumar Killamsetty, Biswajeet Mukherjee,