| 摘要: |
| 针对一种新型的三路Doherty功率放大器，为满足其对称结构要求，在传统对称结
构二等分功分器基础上，结合三路Doherty功放电路尺寸，通过理论计算和采用ADS软件仿真
的方法设计了对称结构三等分Wilkinson功分器。其尺寸为19 mm×11 mm，在2.11
～2.17 GHz内，插入损耗小于0.4 dB，输出端口隔离度大于16 dB，端口回波
损耗大于13 dB。在适应三路Doherty功放对称结构的前提下，功分器性能指标满足功放
电路三路相位一致性设计要求，提高了放大器工作效率，测试结果显示饱和点工作效率高于
两路Doherty功率放大器。 |
| 关键词: 高效率功放；Wilkinson功分器 对称结构；相位一致性 |
| DOI： |
|
| 基金项目: |
|
| Application of New Trisected Wilkinson Power Divider in High Efficiency Power Amplifier |
| CHEN Wei,TAO Xue-min,ZHAO Na |
| (Space Star Aerospace Technology Applications Co., Ltd., Xi′an 710077,China;College of Communication Engineering，Chongqing University, Chongqing 400030,
China) |
| Abstract: |
| In a new three-way Doherty PA(Power Amplifier) design, based on the traditional
symmet
rical structure power divider and according to the circuit size of the new PA, a
trisected Wilkinson power divider with symmetrical structure is designed
through theoretical calculation and simulation using ADS software. The size of
the new power divider is 19 mm×11 mm, in 2.11～2.17
GHz, the insertion
loss is less than 0.4 dB, the isolation is more than 16 dB, and the retu
rn los
s is more tha
n 13 dB. On the basis of suiting for the structure of the three-way Doherty
PA,
the n
ew power divider meets the phase consistance design requirements of the PA circu
it and improves the efficiency of the PA. The test results show that the efficie
ncy of saturation power is higher than that of the two-way Doherty power amplifi
ers. |
| Key words: high efficiency power amplifier Wilkinson power divider symmetrical structure phase consistance |
《电讯技术》编辑部 