Series-Type Doherty Amplifier Without Hybrid Coupler
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jan 16, 2007
Issued Date -
N/A
app pub date -
Jan 14, 2005
filing date -
Nov 25, 2004
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
Provided is a series type Doherty amplifier which includes a first power amplifier and a second power amplifier using a plurality of transformers. The first power amplifier and the second power amplifier are connected in series. The second power amplifier and a first transformer are connected in series. A first path is branched from a junction between the first power amplifier and the second power amplifier and a phase delay device and a second transformer are connected in series. An output port of the second transformer is connected to a junction of a second path of an output port of the second power amplifier. An efficiency of each power amplifier is determined by a ratio of 1:M in size of a final stage of each of the first and second power amplifiers.
First Claim
Other Claims data not available
