Oscillatory circuit having two oscillators

申请公布号：

US2007057734(A1)

申请号：

US20050223425

申请日期：

2005.09.09

申请公布日期：

2007.03.15

申请人：

RUBY RICHARD C

发明人：

RUBY RICHARD C.

分类号：

H03L7/00

主分类号：

H03L7/00

摘要：

An oscillatory circuit. The oscillatory circuit includes a first oscillator, a second oscillator, and a mixer circuit. The first oscillator is configured to generate a first oscillating signal at a first frequency and has a first frequency temperature coefficient. The second oscillator is configured to generate a second oscillating signal at a second frequency and has a second frequency temperature coefficient. The second frequency is greater than the first frequency, and the second frequency temperature coefficient is less than the first frequency temperature coefficient. The mixer circuit is configured to receive the first oscillating signal from the first oscillator, to receive the second oscillating signal from the second oscillator, and to generate a mixer signal from the first and the second oscillating signals. The mixer signal comprises a signal component at a beat frequency. The beat frequency is equal to the difference between the second frequency and the first frequency.