| 摘要: |
| 利用长为四分之一波长、两端交叉短路的对称耦合微带线和长为四分之三波长折叠微带线并
联结构，提出一种新型小型化超宽带功率分配器。在等效传输线模型的基础上，采用奇偶模
分解方法对其进行
了理论分析，给出了参数设计方程。利用HFSS仿真优化一个微带结构的超宽带功率分配器。
仿真和测量结果表明，通带内插入损耗小于2 dB，输入输出端口的回波损耗分别大于
10 dB和7 dB
，隔离度大于6 dB，高频带外插入损耗在13～20 GHz范围内大于20 dB。该结
构尺寸仅为28 mm×32 mm，具有小型化的特点。 |
| 关键词: 功率分配器 超宽带 奇偶模分解方法 对称耦合微带线 |
| DOI： |
|
| 基金项目: |
|
| A novel compact ultra-wideband power divider |
| LI Wei,FAN Hai-jun,ZHOU Xi-lang |
| (Center for Microwave and RF Technologies, Shanghai Jiaotong University, Shangha
i 200240，China) |
| Abstract: |
| A novel compact ultrawideband(UWB) power divider is proposed. The structure is
formed by a shortcircuited coupled microstrip lines section connected in para
llel to a folded
microstrip line segment at each output port. Based on equivalent transmission li
ne model, design equations and guidelines of the proposed UWB power divider are
given using
evenandoddmode analysis. Then a prototype of this power divider is designe
d
and fabricated on microstrip topology. The simulated and measured results show
the insertion
loss is less than 2 dB. The return loss for the input/output ports is better
than 10 dB/7 dB whereas the isolation is better than 6 dB. The out
of band rejection
level is more than 20 dB from 13 GHz to 20 GHz. It also has a small
size of 28 mm×32 mm. |
| Key words: power divider ultra wideband (UWB) even and odd m
ode decomposition method symmetric coupled microstrip lines |
