Title :
A laser-diode-based photoconductive harmonic mixer for microwave waveform and spectrum measurements
Author :
Wu, Hsiao-Hua ; Chang, Chen-Shiung ; Pan, Ci-Ling
Author_Institution :
Inst. of Electro-optical Eng., Nat. Chiao Tung Univ., Hsinchu, Taiwan
fDate :
7/1/1992 12:00:00 AM
Abstract :
Microwave waveform and spectrum measurement via a low frequency replica using a laser-diode-based photoconductive harmonic mixer is demonstrated. Waveforms of optoelectronically phase-locked 12.01-GHz microwave signals as well as waveform and spectrum of picosecond electrical pulses generated by a step recovery diode measured by this technique are presented. In comparison with previous experiments using main-frame lasers, the principal advantages of the present system are compactness, a large number of sampling points, and the ability to display the waveform and spectrum on any convenient time scale or frequency range.<>
Keywords :
measurement by laser beam; microwave measurement; mixers (circuits); photoconducting devices; 12.01 GHz; laser-diode-based; microwave waveform measurements; optoelectronically phase-locked; phase locked microwave signals; photoconductive harmonic mixer; picosecond electrical pulses; step recovery diode; Diodes; Frequency measurement; Masers; Microwave generation; Microwave measurements; Microwave theory and techniques; Optical pulse generation; Photoconductivity; Pulse measurements; Signal generators;
Journal_Title :
Microwave and Guided Wave Letters, IEEE
