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GaAs monolithic 1.5 to 2.8 GHz tunable ring oscillator with accurate quadrature outputs

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2 Author(s)
Wen-Chieh Wu ; Dept. of Electr. Eng., Nat. Taiwan Univ., Taipei, Taiwan ; Lin, Hao-Hsiung

The design, fabrication and characteristics of a 1.5 to 2.8 GHz tunable ring oscillator with two quadrature outputs are described. Tuning range is 1.3 GHz or 60.5% bandwidth. The phase difference between the two outputs is proved to be 90°. The oscillator phase noise is -81.27 dBc/Hz at 100 kHz offset from the carrier at 2.736 GHz

Published in:

Electronics Letters  (Volume:38 ,  Issue: 4 )