发明名称 |
Series-Type Doherty Amplifier Without Hybrid Coupler |
摘要 |
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.
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申请公布号 |
US7164316(B2) |
申请公布日期 |
2007.01.16 |
申请号 |
US20050905661 |
申请日期 |
2005.01.14 |
申请人 |
KIM JUNGHYUN;JUNG JOO-MIN |
发明人 |
KIM JUNGHYUN;JUNG JOO-MIN |
分类号 |
H03F1/00;H03F3/04 |
主分类号 |
H03F1/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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