Title :
Very compact wideband HBT MMIC VCO with two-output buffer amplifier
Author :
Plouchart, J.O. ; Wang, Huifang ; Riet, M. ; Berdaguer, P.
Author_Institution :
Paris B Lab. de Bagneux, CNET, Bagneux
fDate :
3/3/1994 12:00:00 AM
Abstract :
A very compact wideband HBT MMIC VCO, with two output buffers, required for L-band mobile telecommunication, such as DCS1800, has been fabricated and tested. The VCO has a large bandwidth of 400 MHz with an output power between -1.4 and 2.3 dBm, it exhibits a -80dBc/Hz phase noise at 100 kHz off the carrier at 1.75 GHz and a frequency pull of less than 10 MHz. The circuit area is as small as 1.2×1.2 mm2
Keywords :
MMIC; bipolar integrated circuits; heterojunction bipolar transistors; microwave oscillators; mobile radio systems; variable-frequency oscillators; 1.2 mm; 1.75 GHz; 400 MHz; DCS1800; L-band mobile telecommunication; UHF; compact design; two-output buffer amplifier; voltage-controlled oscillator; wideband HBT MMIC VCO;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19940278
