Title :
A line-unified-FET combiner/divider with built-in 3D amplifiers (LUFET-amp) and its application to a very small injection-locked oscillator
Author :
Tokumitsu, T. ; Kamogawa, K. ; Nishikawa, K. ; Tanaka, M.
Author_Institution :
NTT Wireless Syst. Labs., Kanagawa, Japan
Abstract :
A 20-GHz-band injection-locked oscillator MMIC, which incorporates a novel active four-port combiner/divider and a simple feedback path, is presented. This ILO MMIC measures only 1.0/spl times/1.2 mm, operates in an injection-locked state at subharmonic factors from 1 to 1/4 without buffer amplifiers, and suppress the undesired harmonics of the injected signal to less than -50 dBc. This device is very effective for highly stabilized K-band oscillators.
Keywords :
MMIC oscillators; feedback oscillators; field effect MMIC; injection locked oscillators; power combiners; power dividers; 20 GHz; 3D MMIC; ILO MMIC; active four-port combiner/divider; built-in 3D amplifiers; feedback path; highly stabilized K-band oscillators; injection-locked oscillator; line-unified-FET combiner/divider; Equivalent circuits; Feedback; Frequency conversion; Frequency response; Injection-locked oscillators; Laboratories; MMICs; Microwave oscillators; Polyimides; Slotline;
Conference_Titel :
Microwave Symposium Digest, 1999 IEEE MTT-S International
Conference_Location :
Anaheim, CA, USA
Print_ISBN :
0-7803-5135-5
DOI :
10.1109/MWSYM.1999.779416
