Oscillator with closed series of four inductors and four...

Details Oscillator with closed series of four inductors and four... Oscillator with closed series of four inductors and four...

2006-04-25

2006-04-25

Kinkead, Arnold (Department: 2817)

Oscillators

Solid state active element oscillator

Transistors

C331S1170FE, C331S167000, C331S057000

Reexamination Certificate

active

07034626

ABSTRACT:
An object of the present invention is to provide an oscillator contributing to a reduction of power dissipation. An oscillator10comprises four inductors11—1, 11—3, 11—2, and11—4connected in series to constitute a closed circuit, and four capacitors12—1, 12—3, 12—2, and12—4one ends of which are connected to nodes that are connecting points of the inductors, and another ends of which are held at a power supply VDD. The oscillator10is formed on a semiconductor substrate.

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Shojiro Nakahara et al., “Shuchu Teisuka 4GHz Branch Line Coupler”, The Institute of Electronics, Infromation and Communication Engineers Zenkoku Takai Koen Ronbun Shu 3, Mar. 6, 1972, p. 721, lines 10-12, Figure 3.
Chi-Wa Lo et al., “2-V 900-MHz quadrature coupled LC oscillators with improved amplitude and phase matchings.” Circuits and Systems 1999. ISCAS '99 Proceedings to the 1999 IEEE International Symposium on vol. 2, pp. 585-588, Fig 1.
Setou et al., “Control of Phase States in Ring Oscillators Sharing Inductors,” pp. 813-816, 1997 IEEE International Symposium on Circuits and Systems, Jun. 9-12, 1997, Hong Kong.

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