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

Sangyeol Oh, Beomsoo Shin, Jaehyuk Lim, Jongwon Choi, Seungjin Lee, Jae Hoon Lee

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

2 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 (Print)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

Other

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

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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

Cite this

Oh, S., Shin, B., Lim, J., Choi, J., Lee, S., & Lee, J. H. (2015). UWB bandpass filter with dual notched bands based on microstrip to CPW transition. In 2015 IEEE 16th Annual Wireless and Microwave Technology Conference, WAMICON 2015 [7120408] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/WAMICON.2015.7120408