A sharp skirt notch filter based feedforward 3rd harmonic cancellation scheme for ultra‐high frequency wireless communication system in 834–879 MHz. Issue 4 (April 2016)

• Record Type: Journal Article
• Authors: Jung, Won‐Jae; Jung, Jin‐Woo; Jang, Peter; Park, Jun‐Seok
• Is Part Of: Microwave and optical technology letters. Volume 58:Issue 4(2016:Apr.)
• Page Start: 1006
• Page End: 1010
• Publication Date: 2016-04
• Subjects: CMOS integrated circuits -- active filters -- feedforward -- bandpass filters -- 3rd harmonic cancellation; Microwaves -- Periodicals; Optics -- Periodicals; 621
• DOI: 10.1002/mop.29717
• Languages: English
• ISSNs: 0895-2477

Abstract

ABSTRACT: This article presents a feedforward 3rd harmonic cancellation scheme for ultra‐high frequency (UHF) wireless communication system in 834–879 MHz. The major features are highlighted: a special notch filter with sharp skirt performance (e.g., both lower and higher band edge from 834 to 879 MHz yield lower than −40 dB cutoff), and micro‐controller based amplitude/phase control on feedforward path signal generation for fine harmonic cancellation. A prototype was implemented; it works out 47.36 dB Hz −1 cut‐off and 60 dBc ACLR. © 2016 Wiley Periodicals, Inc. Microwave Opt Technol Lett 58:1006–1010, 2016