Design of a Compact Quad-Channel Microstrip Diplexer for L and S Band Applications
Sobhan Roshani,
Salah I. Yahya,
Yaqeen Sabah Mezaal,
Muhammad Akmal Chaudhary,
Aqeel A. Al-Hilali,
Afshin Mojirleilani,
Saeed Roshani
Affiliations
Sobhan Roshani
Department of Electrical Engineering, Kermanshah Branch, Islamic Azad University, Kermanshah 6718997551, Iran
Salah I. Yahya
Department of Communication and Computer Engineering, Cihan University-Erbil, Erbil 44001, Iraq
Yaqeen Sabah Mezaal
Medical Instrumentation Engineering Department, Al-Esraa University College, Baghdad 10011, Iraq
Muhammad Akmal Chaudhary
Department of Electrical and Computer Engineering, College of Engineering and Information Technology, Ajman University, Ajman 346, United Arab Emirates
Aqeel A. Al-Hilali
College of Medical Techniques, Al-Farahidi University, Baghdad 10011, Iraq
Afshin Mojirleilani
Department of Electrical Engineering, Kermanshah Branch, Islamic Azad University, Kermanshah 6718997551, Iran
Saeed Roshani
Department of Electrical Engineering, Kermanshah Branch, Islamic Azad University, Kermanshah 6718997551, Iran
In this paper, two novel dual-band bandpass filters (BPFs) and a compact quad-channel diplexer working at 1.7/3.3 GHz and 1.9/3.6 GHz are proposed. In the proposed diplexer design, triangular loop resonators and rectangular loop resonators are used together to reduce the circuit size and improve diplexer performances. Insertion loss (IL) and return loss (RL) of the proposed diplexer are better than 0.8 dB and 21 dB, respectively, at these four operating frequencies. Output ports isolation parameter is better than 30 dB. With the achieved specifications, the proposed diplexer can be used in L and S band applications.
