A Novel 3–5 GHz Active Matched Filter for Impulse Radio Ultra-Wideband

Author

Xia, Jingjing ; Law, Choi L. ; Jiang, Jisu

Author_Institution

PWTC Center, Nanyang Technol. Univ., Singapore, Singapore

Volume

19

Issue

7

fYear

2009

fDate

7/1/2009 12:00:00 AM

Firstpage

458

Lastpage

460

Abstract

In this letter, a novel active matched filter for UWB-IR lower band (3.1-4.85 GHz) is presented. The signal to noise ratio is improved at the output using a tapped delay line with a common source amplifier. An artificial transmission line is used for wideband impedance matching. The matched filter achieves a power gain of 9.8 dB at center frequency. Input matching is better than -19 dB and output matching is better than -15 dB. The averaged SNR improvement is 4.6 dB using peak detection. Input referred 1-dB compression point is 0.7 dBm at the center frequency. The matched filter is biased from a 1.5 V supply with a total power consumption of 38 mW.

Keywords

active filters; impedance matching; matched filters; microwave filters; transmission lines; ultra wideband technology; UWB-IR lower band; active matched filter; artificial transmission line; center frequency; common source amplifier; frequency 3 GHz to 5 GHz; gain 9.8 dB; impulse radio ultrawideband; peak detection; power 38 mW; power consumption; signal to noise ratio; tapped delay line; voltage 1.5 V; wideband impedance matching; Matched filter; signal-to-noise improvement; ultra-wideband (UWB);

fLanguage

English

Journal_Title

Microwave and Wireless Components Letters, IEEE

Publisher

ieee

ISSN

1531-1309

Type

jour

DOI

10.1109/LMWC.2009.2022133

Filename

5109497