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US 2006/0132235 A1Published application
Gain-controlled amplifier, receiver circuit and radio communication device
AssigneeSony Corporation
InventorMiho Ozawa
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AssigneeSony Corporation
InventorMiho Ozawa
Estimating the term…
A gain-controlled amplifier capable of dealing with the system for performing the receiving operation continuously, and capable of correcting a change of a DC offset owing to an operation condition such as temperature; a receiver circuit using the gain-controlled amplifier; and a radio communication device installing the receiver circuit. In a gain-controlled amplifier composed of three GCA stages (11)-(13) connected by cascade connection, the center value of an output DC of each GCA stage (11)-(13) is kept to be constant by a common feedback circuit (16)-(18) provided correspondingly to each of the GCA stages (11)-(13), and a DC feedback quantity is made to be changed according to a gain control voltage VG by means of a DC feedback circuit (19) provided between an output side of a last stage of the GCA stages and an input side of a first stage of the GCA stages.
A gain-controlled amplifier, characterized by comprising:
A receiver circuit, characterized by comprising a gain-controlled amplifier for adjusting an amplitude of a signal obtained by performing a frequency conversion of a received signal, wherein said gain-controlled amplifier has:
A radio communication device, characterized by comprising:
Dependencies are inferred from the claim text.