UWB bandpass filter with dual notched bands based on microstrip to CPW transition

Sangyeol Oh, Beomsoo Shin, Jaehyuk Lim, Jongwon Choi, Seungjin Lee, Jaehoon Lee

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    3 Citations (Scopus)

    Abstract

    In this paper, highly selective ultra-wideband bandpass filter with dual notched bands is proposed. The proposed filter was designed using microstrip to coplanar waveguide transition structure in order to increase the coupling bandwidth. Also, we used stepped impedance stub loaded resonators since the sharp skirt characteristics at lower and upper stop bands are required. In addition, dual notched bands are implemented by spur lines and U-shaped slot resonator for undesired signal interference avoidance (WLAN signals at 5.8 GHz, satellite communication signals at 8.0 GHz) The proposed filter has the measured return loss less than -10 dB in the passband and the bandwidth of passband of 2.32 GHz ∼ 10.68 GHz, and the group delay remained relatively flat and less than 0.5 ns in the passband except for the dual notched bands. The rejection center frequencies are 5.43 GHz and 8.07 GHz.

    Original languageEnglish
    Title of host publication2015 IEEE 16th Annual Wireless and Microwave Technology Conference, WAMICON 2015
    PublisherInstitute of Electrical and Electronics Engineers Inc.
    ISBN (Electronic)9781479975211
    DOIs
    Publication statusPublished - 2015 Jun 9
    Event2015 16th IEEE Annual Wireless and Microwave Technology Conference, WAMICON 2015 - Cocoa Beach, United States
    Duration: 2015 Apr 132015 Apr 15

    Publication series

    Name2015 IEEE 16th Annual Wireless and Microwave Technology Conference, WAMICON 2015

    Other

    Other2015 16th IEEE Annual Wireless and Microwave Technology Conference, WAMICON 2015
    Country/TerritoryUnited States
    CityCocoa Beach
    Period15/4/1315/4/15

    Bibliographical note

    Publisher Copyright:
    © 2015 IEEE.

    Keywords

    • Dual notched bands
    • High selectivity
    • Microstrip to CPW transition
    • UWB bandpass filter

    ASJC Scopus subject areas

    • Computer Networks and Communications
    • Electrical and Electronic Engineering

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