Title :
How to increase locking range of coupled oscillator cells without lowering Q
Author :
Jinjin Shen ; Pearson, L.W.
Author_Institution :
Dept. of Electr. & Comput. Eng., Clemson Univ., SC, USA
Abstract :
The locking-range and phase error caused by the random free-running frequency distribution in coupled oscillator phased arrays are studied. A design method based on coupling optimization is proposed to improve the oscillator locking-range and thereby reduce the phase error. A qualitative analysis and experimental results are presented to demonstrate the viability of this method for improving the fabrication tolerance of coupled oscillator phased arrays.
Keywords :
antenna phased arrays; arrays; beam steering; circuit optimisation; coupled circuits; equivalent circuits; errors; microwave oscillators; voltage-controlled oscillators; 9 to 11 GHz; 9.9 GHz; coupled oscillator cells; coupled oscillator phased arrays; coupling optimization; design method; equivalent circuits; fabrication tolerance; locking range; phase error reduction; random free-running frequency distribution; Computer errors; Coupling circuits; Design methodology; Difference equations; Equivalent circuits; Fabrication; Frequency; Oscillators; Phased arrays; RLC circuits;
Conference_Titel :
Microwave Symposium Digest, 2002 IEEE MTT-S International
Print_ISBN :
0-7803-7239-5
DOI :
10.1109/MWSYM.2002.1011909
