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首页> 外文期刊>Microwaves, Antennas & Propagation, IET >Broadband microwave crossover using parallel-coupled microstrip lines and short-ended stubs
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Broadband microwave crossover using parallel-coupled microstrip lines and short-ended stubs

机译：使用并联微带线和短截线的宽带微波交叉

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摘要

A broadband microwave crossover with planar structure and compact size is proposed. It is composed of four pairs of parallel-coupled microstrip lines terminated with short-ended stubs. The utilised structure is analysed using a second-order even/odd-mode method, which shows that the centre frequency and bandwidth of the passband are defined by the length and coupling factor of the coupled lines, respectively. The proposed design is verified using both full-wave simulations as well as experiments on two prototypes. The achieved results of the two designs indicate fractional bandwidths of 12.5 and 25% with less than 0.8 dB of insertion loss, more than 17 dB of return loss, more than 18 and 12 dB of isolation and a flat group delay with less than 0.4 ns of deviation.
机译：提出了一种具有平面结构和紧凑尺寸的宽带微波分频器。它由四对以短截线端接的平行耦合微带线组成。使用二阶偶/奇模方法分析了所使用的结构，该方法表明通带的中心频率和带宽分别由耦合线的长度和耦合因子定义。拟议的设计通过全波仿真以及两个原型的实验得到了验证。两种设计的成功结果表明，分别有12.5％和25％的小部分带宽，小于0.8 dB的插入损耗，大于17 dB的回波损耗，大于18和12 dB的隔离度以及小于0.4 ns的平坦群延迟。偏差。

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