A Compact UWB Bandpass Filter With Embedded SIR as Band Notch Structure

Author

Ghatak, Rowdra ; Sarkar, Pankaj ; Mishra, R.K. ; Poddar, D.R.

Author_Institution

Electron. & Commun. Eng. Dept., Nat. Inst. of Technol. Durgapur, Durgapur, India

Volume

21

Issue

5

fYear

2011

fDate

5/1/2011 12:00:00 AM

Firstpage

261

Lastpage

263

Abstract

In this letter, an ultrawideband (UWB) bandpass filter with a band notch is proposed. The UWB BPF (3.1-10.6 GHz) is realized by cascading a distributed high-pass filter and an elliptic low-pass filter with an embedded stepped impedance resonator (SIR) to achieve a band notch characteristic. The notch band is obtained at 5.22 GHz. It is shown that the notch frequency can be tuned by changing the impedance ratio of the embedded SIR. A fabricated prototype of the proposed UWB bandpass filter is developed. The inband and out-of-band performance obtained by measurement, EM simulation, and that with an equivalent circuit model are in good agreement.

Keywords

band-pass filters; elliptic filters; equivalent circuits; high-pass filters; low-pass filters; microwave filters; notch filters; resonator filters; ultra wideband technology; EM simulation; band notch structure; compact UWB bandpass filter; distributed high-pass filter; elliptic low-pass filter; embedded SIR; equivalent circuit model; frequency 3.1 GHz to 10.6 GHz; frequency 5.22 GHz; impedance ratio; notch band; notch frequency; ultrawideband bandpass filter; Band pass filters; Impedance; Integrated circuit modeling; Microwave filters; Passband; Ultra wideband technology; Wireless communication; Notch-band; stepped impedance resonator (SIR); ultrawideband (UWB) bandpass filter;

fLanguage

English

Journal_Title

Microwave and Wireless Components Letters, IEEE

Publisher

ieee

ISSN

1531-1309

Type

jour

DOI

10.1109/LMWC.2011.2128302

Filename

5742716