Title :
Compact InP-based HBT VCOs with a wide tuning range at W- and D-band
Author :
Baeyens, Yves ; Dorschky, Claus ; Weimann, Nils ; Lee, Qinghung ; Kopf, Rose ; Georgiou, George ; Mattia, John-Paul ; Hamm, Robert ; Chen, Young-Kai
Author_Institution :
Lucent Technol. Bell Lab., Murray Mill, NJ, USA
fDate :
12/1/2000 12:00:00 AM
Abstract :
Compact monolithic integrated differential voltage-controlled oscillators (VCOs) operating in W-band were realized using InP-based heterojunction bipolar transistors (HBTs). The oscillators, with a total chip size of 0.6 by 0.35 mm2, are based on a balanced Colpitts-type topology with a coplanar transmission-line resonator. By varying the voltage across the base-collector junction of the HBT in the current mirror and by changing the current in the VCO, the oscillation frequency can be tuned between 84 and 106 GHz. At 100 GHz, a differential voltage swing of 400 mV is obtained, which should be sufficient to drive 100 Gb/s digital logic. By combining the balanced outputs of a similar differential VCO in a push-push configuration, a compact source with close to -10 dBm output power and a tuning range between 138 and 150 GHz is obtained
Keywords :
III-V semiconductors; MMIC oscillators; bipolar MIMIC; circuit tuning; heterojunction bipolar transistors; indium compounds; integrated circuit design; millimetre wave oscillators; voltage-controlled oscillators; 138 to 150 GHz; 84 to 106 GHz; D-band; EHF; InP; InP-based HBT VCOs; MM-wave VCO; W-band; balanced Colpitts-type topology; compact HBT VCOs; compact MM-wave source; coplanar transmission-line resonator; current mirror; heterojunction bipolar transistors; monolithic integrated differential VCO; oscillation frequency tuning; push-push configuration; voltage-controlled oscillators; wide tuning range; Frequency; Heterojunction bipolar transistors; Logic; Mirrors; Power generation; Topology; Transmission lines; Tuning; Voltage; Voltage-controlled oscillators;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
