Multiple output power mode amplifier

• US 7,714,647 B2
• Filed: 08/20/2009
• Issued: 05/11/2010
• Est. Priority Date: 01/09/2007
• Status: Active Grant

• Current Assignee: Avago Technologies International Sales Pte Limited (Broadcom, Inc.)
• Original Assignee: Avago Technologies Wireless IP Singapore Pte Limited (Broadcom, Inc.)
• Inventors: Kim, Jung-Hyun, Jeon, Moon-Suk, Kwon, Young
• Primary Examiner(s): NGUYEN, PATRICIA T
• Application Number:
  US12/544,308
• Publication Number:
  US 20090309656A1
• Time in Patent Office: 264 Days
• Field of Search: 330/51, 330/124.R, 330/302
• US Class Current: 330/51
• CPC Class Codes: H03F 1/0211 with control of the supply voltage or current
• CPC Class Codes: H03F 1/56 Modifications of input or output impedances, not otherwise provided for

Abstract

A multi-mode power amplifier and an electronic device including the amplifier are described.

Claims

1. An amplifier, comprising:

a high-power signal path;

a low-power signal path; and

a bypass signal path comprising a power amplifier (PA) bypass network configured to transmit an input signal to an output with substantially no gain, wherein no radio frequency (RF) switches are provided between an input and the bypass-signal path.

2. An amplifier as claimed in claim 1, wherein the PA bypass network further comprises a an impedance matching network.

3. An amplifier as claimed in claim 1, further comprising a controller adapted to engage the high-power signal path to conduct an input signal to an output, while preventing the low-power signal path from conducting a significant portion of the input signal.

4. An amplifier as claimed in claim 1, wherein the PA bypass network further comprises a passive bypass impedance matching network and switching circuitry.