Title :
Indirect Optically Controlled Pseudomorphic HEMT Based MMIC Oscillator
Author :
Bangert, A. ; Benz, W. ; Berroth, M. ; Hulsmann, A. ; Hurm, V. ; Kaufel, G. ; Kohler, Klaus ; Rosenzweig, J. ; Schneider, Jo.
Author_Institution :
Fraunhofer-Institut fÿr Angewandte Festkörperphysik, Tullastr. 72, W-7800 Freiburg, Germany; Universitÿt Kassel, Wilhelmshöher Allee 73, W-3500 Kassel, Germany
Abstract :
For the first time an indirect optically controlled monolithic integrated oscillator was fabricated and examined experimentally. The oscillator was designed for a frequency of about 7 GHz. By illuminating a 60×60O¿m2 photodiode by the light of a pigtailed laser diode (¿=840 nm), the free-running frequency of the oscillator was tunable in a range of more than 7 MHz. A locking range of more than 3 MHz was achieved. A phase shift in the output signal of nearly 180° has been observed.
Keywords :
Circuits; Frequency; Injection-locked oscillators; Integrated optics; MMICs; MODFETs; Optical control; Optical sensors; PHEMTs; Photodiodes;
Conference_Titel :
Microwave Conference, 1992. 22nd European
Conference_Location :
Helsinki, Finland
DOI :
10.1109/EUMA.1992.335788
