Two-Tone Excited Hybrid-Coupler-Based Intermodulation Generator for High-Isolation Wireless Sensing Applications

被引：1

作者：

Yin, Yue ^{[1
]}

Qi, Hao-Bo ^{[1
]}

Wang, Rong-Yao ^{[1
]}

Ngo, Tung ^{[3
]}

Zhang, Hao ^{[1
,2
]}

机构：

[1] Northwestern Polytech Univ, Sch Microelect, Xian 710072, Peoples R China

[2] Northwestern Polytech Univ, Yangtze River Delta Res Inst NPU, Xian 710072, Peoples R China

[3] Natl Univ Singapore, Dept Elect & Comp Engn, Singapore 119077, Singapore

来源：

IEEE ACCESS | 2020年 / 8卷 / 08期

基金：

中国国家自然科学基金;

关键词：

Couplers; Harmonic analysis; Hybrid power systems; Wireless sensor networks; Wireless communication; Sensors; Generators; Hybrid coupler; two tones; intermodulation; schottky diodes; wireless sensing;

D O I：

10.1109/ACCESS.2020.3041354

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

An intermodulation generator is designed and presented with integration of a hybrid coupler and two identical Schottky diodes (i.e., D-1 and D-2). The connection polarities of D-1 and D-2 to the direct and coupled ports of hybrid coupler are opposite for its rapid realization of balanced intermodulation generation. Due to the superior coupling characteristics of hybrid coupler, it can distribute an incident two-tone signal to the direct and coupled ports evenly for D-1 and D-2, and deliver the balanced intermodulation generations to the isolation port highly insulated from its incident port. Two identical quarter-wavelength shorted stubs at the fundamental frequency are implemented by suppressing the second-order spectrums for an enhancement of the balanced intermodulation generations. Both theoretical analysis and experiments validate the presented intermodulation generator design, which can highly isolate its incidences (the two tones) and outputs (the intermodulation generations) for the future high-isolation wireless sensing applications.

引用

页码：212509 / 212514

页数：6