✦ LIBER ✦

A wideband linear-in-dB VGA using a CMOS in the triode region

✍ Scribed by Hui Dong Lee; Kyung-Ai Lee; Bonghyuk Park; Sangsung Choi; Songcheol Hong

Publisher: John Wiley and Sons
Year: 2006
Tongue: English
Weight: 184 KB
Volume: 48
Category: Article
ISSN: 0895-2477
DOI: 10.1002/mop.21546

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

This paper presents a wideband variable gain amplifier (VGA) fabricated using the 0.18‐μm CMOS process. An exponential CMOS triode transconductor scheme is proposed to achieve highly linear‐in‐dB characteristics of a VGA for ultra‐wideband (UWB) systems. The proposed VGA achieves a linear‐in‐dB controllable gain range of 28.4 dB (7 to −21.4 dB) with a bandwidth of 1200 MHz, while drawing only 2.7 mA from a 1.8‐V power supply. Measurements show a linear gain range with a linearity error of less than ±0.5 dB. P~1dB~ varies from −8.5 to −6 dBm. The chip occupies an area of 0.2 × 0.2 mm^2^, excluding bond‐pads. © 2006 Wiley Periodicals, Inc. Microwave Opt Technol Lett 48: 997–1000, 2006; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.21546

📜 SIMILAR VOLUMES

A CMOS wideband linear-in-dB VGA for UWB

A CMOS wideband linear-in-dB VGA for UWB applications

✍ Hui Dong Lee; Kyung-Ai Lee; Songcheol Hong 📂 Article 📅 2007 🏛 John Wiley and Sons 🌐 English ⚖ 472 KB

## Abstract A CMOS wideband variable gain amplifier (VGA) with an exponential gain control characteristic is presented. The exponential gain control function is realized by changing the tail currents a differential gain stage. The bandwidth is extended by using an inductive peaking technique. The g

Mood disorder following DBS of the left

Mood disorder following DBS of the left amygdaloid region in a dystonia patient with a dislodged electrode

✍ Sylvie Piacentini; Luigi Romito; Angelo Franzini; Alberto Granato; Giovanni Brog 📂 Article 📅 2008 🏛 John Wiley and Sons 🌐 English ⚖ 101 KB

## Abstract Continuous high‐frequency stimulation of the globus pallidum internum (GPi) is an accepted treatment for patients with primary dystonia. In a series of 18 consecutive dystonia cases that were successfully treated by bilateral GPi stimulation, 1 patient had an adverse event involving the

The stability of nonlinear systems in th

The stability of nonlinear systems in the region of linear dominance

✍ I. A. Gura; D. D. Perlmutter 📂 Article 📅 1965 🏛 American Institute of Chemical Engineers 🌐 English ⚖ 726 KB

Use of spatial factors in the analysis o

Use of spatial factors in the analysis of heavy metals in sediments in a Brazilian coastal region

✍ T. C. Bailey; C. Barcellos; W. J. Krzanowski 📂 Article 📅 2005 🏛 John Wiley and Sons 🌐 English ⚖ 410 KB

Consumers' preferences for beef in the S

Consumers' preferences for beef in the Spanish region of Extremadura: a study using conjoint analysis

✍ Francisco J Mesías; Miguel Escribano; Antonio Rodríguez de Ledesma; Francisco Pu 📂 Article 📅 2005 🏛 John Wiley and Sons 🌐 English ⚖ 118 KB

The natural environment of Cupressus sem

The natural environment of Cupressus sempervirens in Greece as a basis for its use in the Mediterranean region

✍ G. Brofas; G. Karetsos; P. Dimopoulos; C. Tsagari 📂 Article 📅 2006 🏛 John Wiley and Sons 🌐 English ⚖ 253 KB

## Abstract This paper studies the natural stands of __Cupressus sempervirens__ L. in Greece. __C.__ __sempervirens__ stands are located on the islands of Crete, Samos, Rhodes, Kos, Symi, and Milos, while populations on the islands of Chios and Kalymnos were discovered recently. Stands in the Pelop