June 22, 2024
Abbas Rezaei

Abbas Rezaei

Academic rank: Assistant professor
Education: Ph.D in Electrical engineering
Phone: 083-38305001
Faculty: Faculty ofٍٍ Electrical Engineering


High-Performance Ultra-Compact Dual-Band Bandpass Filter for Global System for Mobile Communication-850/Global System for Mobile Communication-1900 Applications
Type Article
Bandpass, Compact, Dual band, Filter, Global system for mobile communications, Microstrip.
Researchers Abbas Rezaei، Salah I. Yahya


This work presents a novel microstrip dualband bandpass filter (BPF) using meandros spirals and patch cells, which is proposed for the 1st time by this work. It occupies a very compact size of 0.0017 λg2. The proposed filter is designed to operate at Fo1 = 0.85 GHz and Fo2 = 1.85 GHz for Global System for Mobile Communication (GSM)-850/ GSM-1900 applications. In addition to the small size, it has several advantages in terms of wide fractional bandwidths, low insertion losses, and high return losses at both channels. The simulated insertion losses at the lower and upper passbands are 0.05 dB and 0.1 dB, respectively. Another advantage of the proposed BPF of this work is the attenuated harmonics, where it is able to suppress the 1st, 2nd, 3rd, and 4th harmonics (4.11 Fo1) with −20 dB maximum harmonic level.