Title :
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
fDate :
5/1/2011 12:00:00 AM
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;
Journal_Title :
Microwave and Wireless Components Letters, IEEE
DOI :
10.1109/LMWC.2011.2128302
