Title :
A 325 GHz Quadrature Voltage Controlled Oscillator With Superharmonic-Coupling
Author :
Kim, Jae-young ; Ho-Jin Song ; Ajito, K. ; Yaita, Makoto ; Kukutsu, Naoya
Author_Institution :
NTT Microsyst. Integration Labs., NTT Corp., Atsugi, Japan
Abstract :
We present a 325 GHz quadrature voltage controlled oscillator (QVCO) using 0.25 μm InP HBT technology and superharmonic coupling of two differential Colpitts VCOs. The individual VCOs exhibit about -5-dBm single-ended output power and 10 GHz frequency tuning range. The quadrature oscillation is successfully demonstrated with dc power consumption of 92.4 mW and phase imbalance less than ±12° at around 325 GHz.
Keywords :
heterojunction bipolar transistors; indium compounds; submillimetre wave oscillators; voltage-controlled oscillators; HBT technology; InP; differential Colpitts VCO; frequency 10 GHz; frequency 325 GHz; frequency tuning; power 92.4 mW; quadrature voltage controlled oscillator; size 0.25 mum; superharmonic-coupling; Frequency measurement; Heterojunction bipolar transistors; Indium phosphide; Loss measurement; Voltage-controlled oscillators; Wireless communication; 300 GHz; InP HBT MMIC; THz wireless communication; quadrature voltage controlled oscillator (QVCO);
Journal_Title :
Microwave and Wireless Components Letters, IEEE
DOI :
10.1109/LMWC.2013.2270430
