Oscillators – Solid state active element oscillator – Transistors
Reexamination Certificate
2011-05-31
2011-05-31
Kinkead, Arnold (Department: 2817)
Oscillators
Solid state active element oscillator
Transistors
C331S045000, C331S057000, C324S076130
Reexamination Certificate
active
07952443
ABSTRACT:
An assistant measuring circuit for an oscillator is provided. The oscillator provides N oscillating signals with different phases. The assistant measuring circuit includes N buffers, N reflection-type modulators, and a controller. An ith buffer among the N buffers receives and further transmits an ith oscillating signal among the N oscillating signals. An ith modulator among the N modulators has an ith signal input end, an ith signal output end, and an ith signal control end. The ith oscillating signal is transmitted to the ith signal input end through the ith buffer. The signal output ends of the N modulators are all electrically connected to a measuring end. The controller is used for providing an ith control signal to the ith signal control end.
REFERENCES:
A 32GHz Quadrature LC-VCO in 0.25μm SiGe BiCMOS Technology; W.L. Chan, et al.; 2005 IEEE International Solid-State Circuits Conference; ISSCC 2005/Session 29/RF Techniques/29.5; pp. 538, 539, 616.
A 28-GHz Monolithic Integrated Quadrature Oscillator in SiGe Bipolar Technology; Sabine Hackl, et al.; IEEE Journal of Solid-State Circuits, vol. 38, No. 1, Jan. 2003; pp. 135-137.
A 45-GHz Quadrature Voltage Controlled Oscillators with a Reflection-Type IQ Modulator in 0.13-μm CMOS Technology; Hong-Yeh Chang et al.; Department of Electrical Engineering and Graduate Institute of Communication Engineering, National Taiwan University, Taipei, 106, Taiwan, R.O.C.; pp. 739-742, IEEE Jun. 2006.
Chang Hong-Yeh
Lin Chi-Hsien
Jackson Demian K.
Jackson IPG PLLC
Kinkead Arnold
National Central University
Tan Richard
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