Design of new quadruplexer with compact size, high isolation and wide stopband. Issue 1 (January 2015)

• Record Type: Journal Article
• Authors: Wu, Hung-Wei; Huang, Shih-Hua
• Is Part Of: Microelectronics journal. Volume 46:Issue 1(2015)
• Page Start: 121
• Page End: 124
• Publication Date: 2015-01
• Subjects: Microelectronics -- Periodicals; Microélectronique -- Périodiques; Microelectronics; Electronic journals; Journals - contents and abstracts; Periodicals; 621.3805
• DOI: 10.1016/j.mejo.2014.10.013
• Languages: English
• ISSNs: 0959-8324

Abstract

<abstract abstract-type="author" id="ab0005"> <title id="sect0005">Abstract</title> <sec> <p id="sp0050">This study presents a quadruplexer (1.8/2.4/3.5/5.8 GHz) with compact size, high isolation, low insertion loss and wide stopband based on the multi-mode resonators. The quadruplexer is composed of four pairs of coupled multi-mode resonators (uniform impedance resonator, UIR and stepped impedance resonators, SIRs) and the source–load coupling lines. Each channel (passband) can be easily determined by tuning the impedance ratio (<italic>K</italic>) and length ratio (<italic>α</italic>) of the SIRs so as to implement a 2-order bandpass filter individually. The source–load coupling lines are designed to correspond to the quarter-wavelength of the center frequency at each channel. The proposed quadruplexer shows a simple configuration, an effective design method and a small circuit size.</p> </sec> </abstract>