Compact UWB filter using inverted-T stub to stop IEEE 802.11a narrowband service

Author

Thirumalaivasan, K. ; Nakkeeran, R.

Author_Institution

Dept. of Electron. & Commun. Eng., Pondicherry Eng. Coll., Puducherry, India

fYear

2012

fDate

26-28 July 2012

Firstpage

1

Lastpage

4

Abstract

In this paper, we present a compact filter that is proposed by interconnecting microstrip with Coplanar Waveguide (CPW) structure using broadside coupling to eliminate the interference from IEEE 802.11a to Ultra-Wideband (UWB) systems. The Chebychev Type II is considered as filter design model to stop the entire WLAN spectrum ranging from 5.15 GHz to 5.875 GHz. In order to avoid the effect from this WLAN range, the filter is designed by considering -10 dB stopband from 4.6 GHz to 5.94 GHz with steeper attenuation of 21.69 dB. With the above features and comparable performance with the other filters suggested in the literature, the best size reduction achieved by the designed filter with the total size of 16 mm × 16 mm is 76%. Also, it is observed that the phase response of the filter is linear over the passband.

Keywords

Chebyshev filters; coplanar waveguides; interference suppression; microstrip filters; microwave filters; telecommunication standards; ultra wideband technology; waveguide filters; wireless LAN; Chebychev type II; IEEE 802.11a narrowband service; UWB filter; broadside coupling; coplanar waveguide; frequency 4.6 GHz to 5.94 GHz; interference elimination; inverted-T stub; microstrip filters; microwave filters; phase response; size 16 mm; Capacitors; Coplanar waveguides; Microstrip; Wideband; Wireless LAN; Wireless communication; CPW; LTCC; UWB filter; broadside coupling; linear phase; microstrip; narrowband interference;

fLanguage

English

Publisher

ieee

Conference_Titel

Computing Communication & Networking Technologies (ICCCNT), 2012 Third International Conference on

Conference_Location

Coimbatore

Type

conf

DOI

10.1109/ICCCNT.2012.6396084

Filename

6396084