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Two-Section Broadband Couplers With Wide-Range Phase Differences and Power-Dividing Ratios
IEEE Microwave and Wireless Components Letters ( IF 3 ) Pub Date : 2020-12-10 , DOI: 10.1109/lmwc.2020.3041256
Min Liu 1 , Feng Lin 1
Affiliation  

A two-section broadband coupler with wide-range phase differences and power-dividing ratios is proposed. Closed-form design equations for the proposed couplers are derived. For verification, two couplers I and II operating at 2 GHz with phase difference of 45° and power-dividing ratio of 1, and phase difference of 60° and power-dividing ratio of 2, respectively, are fabricated and measured. For the coupler I (II), the measured 15-dB return loss and isolation bandwidth is 38.0% (51.5%). The measured bandwidths of the amplitude imbalance < 1 dB and the phase imbalance < 5° of the coupler I (II) are 29.5% (35.5%) and 29.0% (43.0%) with 15-dB return loss and isolation, respectively.

中文翻译:

具有宽范围相位差和功率分配比的两节宽带耦合器

提出了一种具有宽范围相位差和功率分配比的两段式宽带耦合器。推导了所提出的耦合器的闭式设计方程。为了验证,分别制造和测量了两个耦合器I和II,它们在2 GHz的频率下相位差为45°,功率分配比为1,相位差为60°,功率分配比为2。对于耦合器I(II),测得的15 dB回波损耗和隔离带宽为38.0%(51.5%)。耦合器I(II)的幅度不平衡<1 dB和相位不平衡<5°的测量带宽分别为29.5%(35.5%)和29.0%(43.0%),回波损耗和隔离度为15-dB。
更新日期:2021-02-12
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