Title :
Generation of Second and Fourth Harmonic Signals Using a Balanced Colpitts Oscillator With a Patch Antenna
Author :
Seok, Eunyoung ; Shim, Dongha ; Arenas, Daniel J. ; Tanner, David B. ; Kenneth, K.O.
Author_Institution :
Electr. & Comput. Eng. Dept., Univ. of Florida, Gainesville, FL, USA
Abstract :
A Colpitts oscillator that generates signal at 589 GHz using both phase superposition and nonlinearities of components is demonstrated in a 0.12 m SiGe BiCMOS process. This approach increases the ratio between fourth and second order harmonic power levels by more than 2 dB compared to that obtained using only linear phase superposition. The output power of this circuit with the highest operating frequency for transistor based signal generators is -37.7 dBm.
Keywords :
BiCMOS integrated circuits; Ge-Si alloys; harmonic generation; microstrip antennas; radiofrequency oscillators; terahertz wave devices; BiCMOS process; Colpitts oscillator; SiGe; balanced colpitts oscillator; fourth harmonic signal generation; frequency 589 GHz; patch antenna; phase superposition; second harmonic signal generation; size 0.12 mum; Antenna measurements; Harmonic analysis; Oscillators; Patch antennas; Power generation; Power system harmonics; Transistors; Colpitts oscillator; SiGe; on-chip patch antenna;
Journal_Title :
Microwave and Wireless Components Letters, IEEE
DOI :
10.1109/LMWC.2010.2058096
