Title :
Locking performance analysis of MESFET subharmonically injection-locked oscillator
Author :
Yang, Yuen-Ren ; Chu, Tah-Hsiung
Author_Institution :
Dept. of Electr. Eng., Nat. Taiwan Univ., Taipei, Taiwan
fDate :
7/1/1999 12:00:00 AM
Abstract :
Subharmonically injection locking to an oscillator is an approach to obtain a stable source operated in microwave of millimeter-wave regions. In this paper, we present the formulation and results on the locking performance of metal-semiconductor field-effect transistor (MESFET) subharmonically injection-locked oscillator (SILO). Nonlinear-state equations of SILO are derived based on the use of a power series expression for MESFET nonlinear elements. The locking performance includes SILO output power, conversion gain, locking bandwidth, and the critical injection-locking signal level. The derived formulation is useful in the design of a MESFET SILO. Simulation results are shown to be in good agreement with those of experimental test measurement
Keywords :
MESFET circuits; equivalent circuits; injection locked oscillators; microwave oscillators; millimetre wave oscillators; nonlinear network analysis; MESFET nonlinear elements; MESFET oscillator; conversion gain; critical injection-locking signal level; locking bandwidth; locking performance analysis; microwave region; millimeter-wave region; nonlinear-state equations; output power; power series expression; stable source; subharmonically injection-locked oscillator; Bandwidth; FETs; Injection-locked oscillators; MESFETs; Microwave oscillators; Millimeter wave transistors; Nonlinear equations; Performance analysis; Performance gain; Power generation;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
