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US 7,612,607 B2Granted
Small size power amplifier with amplifiers switched
AssigneeNEC Electronics Corporation
InventorFumio Harima
Life of this patent
Estimating the term…
Abstract
A small size power amplifier includes a first amplifier provided for a first signal path; a second amplifier provided for said first signal path; and a third amplifier provided for a second signal path parallel to said first signal path. A voltage control circuit configured to bias one of a first set of said first amplifier and said second amplifier, and a second set of said third amplifier, based on an output power.
Claims20
A small size power amplifier comprising:
- a first amplifier provided for a first signal path;
- a second amplifier provided for said first signal path;
- a third amplifier provided for a second signal path parallel to said first signal path;
- a voltage control circuit configured to bias one of a first set of said first amplifier and said second amplifier, and a second set of said third amplifier, based on an output power;
- and
- a node that splits the second signal path from the first signal path, said node being connected to a first matching circuit and a second matching circuit, said first matching circuit and the second matching circuit being located in the first signal path prior to said first amplifier.
3 more elements
A small size power amplifier comprising:
- a first port;
- a first matching circuit connected with said first port;
- a first node connected with said first matching circuit;
- a second matching circuit connected with said first node;
- a first amplifier connected with said second matching circuit;
- a third matching circuit connected with said first amplifier;
- a second amplifier connected with said third matching circuit;
- a fourth matching circuit connected with said second amplifier;
- a fifth matching circuit connected with said first node;
- a third amplifier connected with said fifth matching circuit;
- a sixth matching circuit connected with said third amplifier;
- a second node connected with said fourth matching circuit and said sixth matching circuit;
- a seventh matching circuit connected with said second node;
- a second port connected with said seventh matching circuit;
- and
- a voltage control circuit configured to bias one of a set of said first and second amplifiers and a set of said third amplifier.
13 more elements
A small size power amplifier comprising:
- a first matching circuit;
- a node connected with said first matching circuit;
- a second matching circuit connected with said node;
- a first amplifier connected with said second matching circuit;
- a third matching circuit connected with said first amplifier;
- a second amplifier connected with said third matching circuit;
- a fourth matching circuit connected with said second amplifier;
- a fifth matching circuit connected with said node;
- a third amplifier connected with said fifth matching circuit;
- and
- a voltage control circuit configured to bias one of a set of said first and second amplifiers and a set of said third amplifier.
8 more elements
Dependencies are inferred from the claim text.