Amplifiers – With semiconductor amplifying device – Including balanced to unbalanced circuits and vice versa
Reexamination Certificate
2011-01-11
2011-01-11
Mottola, Steven J (Department: 2817)
Amplifiers
With semiconductor amplifying device
Including balanced to unbalanced circuits and vice versa
C330S311000
Reexamination Certificate
active
07868697
ABSTRACT:
A converting circuit for converting differential signals to a single-ended signal. The converting circuit comprises a cascode amplifier comprising a first transistor and a second transistor, wherein the first transistor comprises a control terminal, a first terminal, and a second terminal, the control terminal to which one of the differential signals is input, the control terminal being electrically-grounded; and, the second transistor comprises a first terminal and a second terminal, the first terminal of the second transistor being connected to the first terminal, the second terminal of the second transistor from which output signal is outputted, a capacitor for adjusting the phase, the capacitor being connected to the second terminal; and a current source being connected to the second terminal.
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European Search Report dated Jul. 10, 2009, from the corresponding European Application.
Behzad Razavi, et al. “A 0.13 / spl mu/m CMOS UWB transceiver” Solid-State Circuits Conference, Digest of Technical Papers, Jan. 1, 2005, pp. 216-217 & 594, vol. 1.
C. C. Meng, et al., “A High Isolation CMFB Downconversion Micromixer Using 0.18-pm Deep N-Well CMOS”, 2003, pp. 619-622, IEEE Radio Frequency Integrated Circuits Symposium.
Fujitsu Limited
Fujitsu Patent Center
Mottola Steven J
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