Second harmonic oscillator

Details Second harmonic oscillator Second harmonic oscillator

2008-02-22

2009-12-08

Kinkead, Arnold (Department: 2817)

Oscillators

Combined with particular output coupling network

Space discharge or unilaterally conductive device in output...

C331S041000, C331S043000, C331S044000, C331S1070DP, C331S10800D, C331S074000, C331S1170FE

Reexamination Certificate

active

07629857

ABSTRACT:
A second harmonic oscillator has a series positive feedback configuration, suppresses output of a fundamental signal, and outputs a second harmonic signal having a frequency in a range from 1 GHz to 200 GHz generated inside of a circuit. The second harmonic oscillator includes: a transistor having a base terminal, a first emitter terminal, a second emitter terminal, and a collector terminal; a resonator circuit connected to the base terminal; a first transmission line shod-circuiting stub connected to one of the two emitter terminals; and a second transmission line short-circuiting stub connected to the other of the two emitter terminals and having a line length obtained by adding one-fourth of one wavelength of the fundamental signal to an integer multiple of one-half wavelength of the fundamental signal.

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