Rectifier circuit and radio communication device

Details Rectifier circuit and radio communication device Rectifier circuit and radio communication device

2005-06-16

2008-09-09

Maung, Nay (Department: 2618)

Telecommunications

Transmitter and receiver at separate stations

Near field

C455S169100, C455S333000, C340S010400, C340S572500

Reexamination Certificate

active

07424265

ABSTRACT:
A rectifier circuit includes a bias circuit that outputs a direct-current voltage; a first MOS transistor that has a gate and a source; and a second MOS transistor that has a gate, a source, and a drain connected to the source of the first MOS transistor. Only the direct-current voltage is applied between the gate and the source of the first MOS transistor, and only the direct-current voltage being applied between the gate and the source of the second MOS transistor. The rectifier circuit also includes a coupling capacitor that has a first end which is connected to the source of the first MOS transistor, and a second end to which an alternating-current signal is input.

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Hamid Reza Mehrvarz, et al. “A pseudologarithmic Rectifier Using Unbalanced Bias MFMOS Differential Pairs” IEEE Journal of Solid State Circuits, vol. 33, No. 1. XP-000766616. Jan. 1998, pp. 28-34.
U.S. Appl. No. 11/877,077, filed Oct. 23, 2007, Umeda, et al.

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