Title:
RFフロントエンド集積回路
Document Type and Number:
Japanese Patent JP4659826
Kind Code:
B2
Abstract:
A monolithic integrated circuit (IC), and method of manufacturing same, that includes all RF front end or transceiver elements for a portable communication device, including a power amplifier (PA), a matching, coupling and filtering network, and an antenna switch to couple the conditioned PA signal to an antenna. An output signal sensor senses at least a voltage amplitude of the signal switched by the antenna switch, and signals a PA control circuit to limit PA output power in response to excessive values of sensed output. Preferred fabrication techniques include stacking multiple FETs to form switching devices. An iClass PA architecture is described that dissipatively terminates unwanted harmonics of the PA output signal. A preferred embodiment of the RF transceiver IC includes two distinct PA circuits, two distinct receive signal amplifier circuits, and a four-way antenna switch to selectably couple a single antenna connection to any one of the four circuits.
Inventors:
Bergner, mark, ell
Cable, james, es
Cable, james, es
Application Number:
JP2007518298A
Publication Date:
March 30, 2011
Filing Date:
June 23, 2005
Export Citation:
Assignee:
Peregrine Semiconductor Corporation
International Classes:
H03F3/24; H03F1/22; H03F3/189; H03F3/217; H03F3/68; H03G3/30; H04B1/04; H04B1/28; H04B1/44; H04M1/00
Domestic Patent References:
| JP1254014A | ||||
| JP2004515937A | ||||
| JP4183008A | ||||
| JP8148949A | ||||
| JP2003198248A | ||||
| JP2003060451A | ||||
| JP2291704A | ||||
| JP2000269831A | ||||
| JP2003087069A | ||||
| JP9069731A | ||||
| JP8079035A |
Foreign References:
| US20030002452 |
Attorney, Agent or Firm:
Tadahiko Ito
Shinsuke Onuki
Tadashige Ito
Shinsuke Onuki
Tadashige Ito