Title :
Compact lowpass filter based on coupled-line hairpin unit
Author :
Feng Wei ; Lei Chen ; Xiao-Wei Shi
Author_Institution :
Nat. Key Lab. of Antennas & Microwave Technol., Xidian Univ., Xi´an, China
Abstract :
A compact lowpass filter (LPF) with sharp cutoff frequency response and wide rejection bandwidth is proposed. The proposed LPF has a simple structure and comprises one microstrip coupled-line hairpin unit, one spiral slot and two open stubs. A demonstration filter with 3 dB cutoff frequency at 2.0 GHz has been designed and fabricated. Theoretical and simulated results are presented, which are in good agreement with the measured results.
Keywords :
UHF filters; low-pass filters; microstrip filters; compact lowpass filter; demonstration filter; frequency 2 GHz; microstrip coupled-line hairpin unit; open stubs; sharp cutoff frequency response; spiral slot; wide rejection bandwidth;
Journal_Title :
Electronics Letters
DOI :
10.1049/el.2011.3811
