A Compact Size Wideband RF-VGA Based on Second Generation Controlled Current Conveyors

• DOI: 10.3390/electronics9101600
• Publication Date: 2020-09-30T13:41:01Z
• Authors: J. del Pino; Sunil L. Khemchan...; D. Galante-Sempere; C. Luján-Martínez
• Keywords: Video Graphics Array; Variable-gain amplifier; Wideband; RFIC

This paper presents a methodology to design wideband radio frequency variable gain amplifier (RF-VGA) in low-cost SiGe BiCMOS 0.35 μm process. The circuit uses two Class A amplifiers based on second-generation controlled current conveyors (CCCII). main feature of this is the input match along with reduced NF (5.5–9.6 dB) and, authors’ knowledge, lowest die footprint reported (62 × 44 μm2 area). implementation RF-VGA CCCII allows without need passive elements. Due nature circuit, when increased, power consumption reduced. architecture suitable for designing wideband, low-power, and low-noise amplifiers. proposed achieves tunable 6.7–18 dB 1.7 mA ±1.5 V DC supply. At maximum gain, covers from up 1 GHz can find application software radios (SDRs), low medical implant communication system (MICS) or industrial, scientific, (ISM) bands.