A tunable ultrawideband digital impulse generator in 0.18 μm CMOS. Issue 4 (April 2015)

• Record Type: Journal Article
• Authors: Yoo, Hyun Jin; Park, Myung Cheol; Kwon, Ickjin; Eo, Yun Seong
• Is Part Of: Microwave and optical technology letters. Volume 57:Issue 4(2015:Apr.)
• Page Start: 865
• Page End: 868
• Publication Date: 2015-04
• Subjects: Microwaves -- Periodicals; Optics -- Periodicals; 621
• DOI: 10.1002/mop.28976
• Languages: English
• ISSNs: 0895-2477

Abstract

<abstract abstract-type="main"> <title>ABSTRACT</title> <p>All digitally reconfigurable ultrawideband (UWB) pulse generator is presented. To achieve independent tuning of the frequency and bandwidth, the variable time delay cell and combining amplifiers for the pulse width control are implemented. In addition, to meet the strict regulation of UWB spectrum mask, the pulse shaper based on weighted summing amplifiers is adopted. The experimental results cover the 3–5.5 GHz, with 500–2000 MHz bandwidth while meeting the −41.3 dBm/MHz power spectral density restriction. The current consumption is only 4 mA at 4 GHz and the chip size is 0.42 mm² in 0.18 μm CMOS process. © 2015 Wiley Periodicals, Inc. Microwave Opt Technol Lett 57:865–868, 2015</p> </abstract>