Title :
Push-push X band GaInP/GaAs VCO with a fully monolithic microstrip resonator
Author :
Florian, C. ; Pirazzini, M. ; Cignani, R. ; Vannini, G. ; Favre, G. ; Filicori, F.
Author_Institution :
Dipt. di Informatica, Elettronica e Sistemistica, Bologna Univ., Italy
Abstract :
In this paper the design of a VCO using GaInP/GaAs HBT technology is presented. The VCO is designed to be a part of a PDH point to point radio system. To achieve low phase noise performances GaInP/GaAs HBT technology and push-push topology have been chosen. The MMIC includes predistorters to emphasize the second harmonic, f0/2 prescalers for PLL locking and buffer amplifiers. A fully monolithic microstrip resonator is coupled with integrated varactors to achieve the specified tuning bandwidth. Phase noise, bandwidth and power measurements will also be presented.
Keywords :
III-V semiconductors; MMIC oscillators; gallium arsenide; heterojunction bipolar transistors; indium compounds; microstrip resonators; varactors; voltage-controlled oscillators; GaInP-GaAs; PDH point-to-point radio system; PLL locking; X band; buffer amplifiers; heterojunction bipolar transistors; monolithic microstrip resonator; phase noise performances; power measurement; predistorters; push-push topology; second harmonic; tuning bandwidth; varactors; voltage controlled oscillator; Bandwidth; Gallium arsenide; Heterojunction bipolar transistors; MMICs; Microstrip resonators; Phase locked loops; Phase noise; Topology; Varactors; Voltage-controlled oscillators;
Conference_Titel :
Microwave Symposium Digest, 2004 IEEE MTT-S International
Print_ISBN :
0-7803-8331-1
DOI :
10.1109/MWSYM.2004.1339004
