Title :
Optimizing a resonator tap for maximizing oscillator carrier-to-noise ratio
Author :
von Staveren, A. ; Verhoeven, C.J.M.
Author_Institution :
Electron. Res. Lab., Delft Univ. of Technol., Netherlands
Abstract :
Minimizing phase noise of resonator-based oscillators can be done by noise matching. Besides optimizing the biasing current of the input stage of the undamping circuit an impedance transformation is also a very effective technique. Here carrier-to-noise ratio is maximized by optimizing the resonator tap. In this way oscillator phase noise can be close to the limit determined by the noise of the resonator itself. For an example design of an 1 MHz oscillator at a supply of 1.3 V, the total noise is only 0.7 dB from this limit
Keywords :
circuit noise; circuit optimisation; oscillators; phase noise; resonators; 1 MHz; 1.3 V; biasing current; carrier-to-noise ratio; design optimization; impedance transformation; noise matching; oscillator; phase noise; resonator tap; undamped circuit; Circuit noise; Circuit stability; Costs; Frequency; Impedance; Laboratories; Noise level; Oscillators; Phase noise; Signal to noise ratio;
Conference_Titel :
Circuits and Systems, 2001. ISCAS 2001. The 2001 IEEE International Symposium on
Conference_Location :
Sydney, NSW
Print_ISBN :
0-7803-6685-9
DOI :
10.1109/ISCAS.2001.921897
