Synthesis design of filtering wideband differential phase shifters on multimode resonators with controllable same insertion loss bandwidth. Issue 3 (13th December 2017)

• Record Type: Journal Article
• Authors: Lyu, Yun‐Peng; Zhu, Lei; Cheng, Chong‐Hu
• Is Part Of: IET microwaves, antennas & propagation. Volume 12:Issue 3(2018)
• Page Start: 367
• Page End: 374
• Publication Date: 2017-12-13
• Subjects: resonator filters -- microwave phase shifters -- UHF phase shifters; synthesis design -- wideband differential phase shifters -- insertion loss bandwidth -- phase shifters -- distinctive multimode resonators -- reference line -- filtering function -- IL bandwidth -- phase‐shifting elements -- phase‐shift value -- return loss -- design curves -- frequency selectivity -- out‐of‐band rejection -- frequency 2.04 GHz to 4.03 GHz; Microwaves -- Periodicals; Microwave antennas -- Periodicals; Antennas (Electronics) -- Periodicals; Radio wave propagation -- Periodicals; Microwave communication systems -- Periodicals; 621.381305
• DOI: 10.1049/iet-map.2017.0772
• Languages: English
• ISSNs: 1751-8725

Abstract

Abstract : A new class of wideband differential phase shifters employing two distinctive multimode resonators both in main and reference lines is presented. Compared with their counterparts, the proposed phase shifter firstly can achieve wideband phase shift and good filtering function with controllable same insertion loss (IL) bandwidth in main and reference lines as required. To design two phase‐shifting elements with design indices (phase‐shift value, return loss, and operating bandwidth), an effective synthesis method is presented and sets of design curves are graphically demonstrated. Prototype phase shifters are then fabricated and measured. Finally, the design approach is validated experimentally. It is shown that the proposed phase shifters achieve 90° ± 2.3° and 45° ± 2.0° over the prescribed band 2.26–3.72 GHz (48%) and 2.04–4.03 GHz (66%). The good frequency selectivity with the same IL bandwidth is obtained and out‐of‐band rejection is >30.2 and 26.4 dB up to 7.0 GHz.