IEEE Microwave and Wireless Components Letters · 2021 · 11 citations · 8 references
EngineeringElectrical EngineeringMetallic MaterialsMicroelectronicsMicrowave EngineeringImpedance MatchingMicrostrip CircuitsMicrowave Integrated CircuitsMicrowave Transmission LinesNanowiresRadio-frequency Integrated CircuitsCrossover FrequencyHigh-frequency IsolationInsertion LossInsertion Loss ReductionIsolationMicrostrip Circuit DesignMicrostrip Integrated CircuitsMillimeter-wave Integrated Circuits
This letter presents an ultra-wideband crossover based on metallic-nanowire-filled membrane (MnM) from dc to 110 GHz. Two designs are proposed with reduced insertion loss and high isolation. Design Type 1 presents a 1.2 dB insertion loss and 19 dB isolation up to 80 GHz, with a phase imbalance of 14° at 80 GHz. This important phase imbalance is due to CPW that passes under the top microstrip (MS) line. To improve the device, a CPW was used in both paths. The improved design Type 2 shows a 1.5 dB insertion loss, 0.2 dB insertion loss imbalance, and 3.3° phase imbalance at 110 GHz. The latter presents a measured isolation of 38 dB up to 70 GHz and a simulated isolation better than 30 dB up to 110 GHz.
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A Compact Wideband Microstrip Crossover
W. K. Liu, Zhijun Zhang, Zhenghe Feng et al. · IEEE Microwave and Wireless Components Letters · 2012 · 86 citations
Ariana L. C. Serrano, Anne‐Laure Franc, Danilo P. Assis et al. · IEEE Transactions on Microwave Theory and Techniques · 2014 · 47 citations