Work

A Novel Unbalanced‐to‐Balanced Switchable Quadruplexer With High Off‐State Suppression

Year: 2026

Type: article

Abstract: ABSTRACT In this paper, a novel unbalanced‐to‐balanced switchable quadruplexer with high off‐state suppression is proposed. Four channels are realized through four pairs of step impedance resonators and uniform impedance resonators with different center frequencies in the quadruplexer. Furthermore, the flexible and controllable channel switching function is achieved through loading PIN diodes and their bias circuits at the open‐circuited ends of the resonators. To verify the feasibility of the proposed design, a quadruplexer with center frequencies of 1.227, 1.575, 1.9, and 2.3 GHz, respectively, is designed and fabricated. Measurement results indicate that the proposed quadruplexer achieves four independently controllable channels with an off‐state suppression of up to 51 dB. It is expected to be applicable to combined applications of global navigation satellite systems and mobile communication systems.

Source: Microwave and Optical Technology Letters

DOI: 10.1002/mop.70767

Authors: Jidong Yu, Zhongbao Wang, Xining Zhang, Hongmei Liu

Institution: Dalian Maritime University

Language: English

Topic: Microwave Engineering and Waveguides

Subfield: Electrical and Electronic Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: bronze

Funders: National Natural Science Foundation of China, Natural Science Foundation of Liaoning Province

Awards: G6131356197, G736920627