Compact differential bandpass filter with a narrow notched band using APCL structure suitable for UWB application. Issue 9 (September 2015)

• Record Type: Journal Article
• Authors: Amirian, Mohsen; Karimi, Gholamreza; Lalbakhsh, Ali; Bayati, Mohammad-sajad
• Is Part Of: Microelectronics journal. Volume 46:Issue 9(2015)
• Page Start: 869
• Page End: 874
• Publication Date: 2015-09
• Subjects: Microelectronics -- Periodicals; Microélectronique -- Périodiques; Microelectronics; Electronic journals; Journals - contents and abstracts; Periodicals; 621.3805
• DOI: 10.1016/j.mejo.2015.06.014
• Languages: English
• ISSNs: 0959-8324

Abstract

<abstract abstract-type="author" id="ab0005"> <title id="sect0005">Abstract</title> <sec> <p id="sp0065">A compact differential band pass filter with asymmetric parallel-coupled lines (APCL) and center frequency of 5.6 GHz is proposed in this paper. The APCL suppresses unwanted RFID signals by introducing a fully tunable notched band at 6.8 GHz. By combining the concept of transmission matrix with modal analysis and extracting a novel model for symmetric three parallel coupled lines (SPCL), role of each resonant frequency is clearly explained. Measurement results in the differential mode show a pass band from 3.1 to 8.1 GHz and a wide stop band from 9.1 to 16 GHz with attenuation of more than 20 dB. In addition, <italic>S</italic>₂₁ in common mode is lower than −10.5 dB over the pass band.</p> </sec> </abstract>