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Ultra‐wideband crossover with a reversed polarity channel designed with normalized Euclid distance for fast pulse transmission
Author(s) -
Zhang Qiuyi,
Li Shunli,
Yang Mei,
Yin Xiaoxing,
Zhao Hongxin,
Liu Leilei
Publication year - 2019
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.31954
Subject(s) - crossover , wideband , transmission (telecommunications) , bandwidth (computing) , channel (broadcasting) , time domain , electronic engineering , amplitude , polarity (international relations) , ultra wideband , pulse (music) , physics , computer science , telecommunications , optics , engineering , chemistry , biochemistry , artificial intelligence , detector , computer vision , cell
An ultra‐wideband pulse crossover with a reversed polarity channel is proposed, and a time‐domain analysis is utilized to design the crossover and estimate its performance. Two crossed channels are designed based on post‐wall slotline (PWS) and conventional slotline, and one of the two channels provides an output with reversed polarity. At the overlapping region, the PWS degrades to slotline on single layer to improve isolation between channels. Normalized Euclid distance of short pulses is utilized to evaluate the isolating and polarity reversing features of the crossover, and the matrices of normalized Euclid distance are then obtained and applied to the design procedure. The proposed crossover are modeled and fabricated for simulation and measurement, and the simulated and measured results agree well. Minimum of return loss and isolation is more than 12 dB within an ultra‐wide bandwidth from DC to 8.5 GHz. Moreover, in time domain, the proposed crossover shows good performance in pulse transmission, including high fidelity and amplitude ratio of input and output signals. The characteristics of the crossover indicate the practicability in short pulse application, and rectangular pulse transmission performance is evaluated to verify the ability.