Differential Probe Fed Liquid Crystal-Based Frequency Tunable Circular Ring Patch Antenna | Zendy

Guanghui Xu | Zendy; Hong-Li Peng | Zendy; Changli Sun | Zendy; Jian-Gang Lu | Zendy; Yaoping Zhang | Zendy; Wen-Yan Yin | Zendy

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Differential Probe Fed Liquid Crystal-Based Frequency Tunable Circular Ring Patch Antenna

Author(s) -

Guanghui Xu,

Hong-Li Peng,

Changli Sun,

Jian-Gang Lu,

Yaoping Zhang,

Wen-Yan Yin

Publication year - 2018

Publication title -

ieee access

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.587

H-Index - 127

ISSN - 2169-3536

DOI - 10.1109/access.2017.2786870

Subject(s) - aerospace , bioengineering , communication, networking and broadcast technologies , components, circuits, devices and systems , computing and processing , engineered materials, dielectrics and plasmas , engineering profession , fields, waves and electromagnetics , general topics for engineers , geoscience , nuclear engineering , photonics and electrooptics , power, energy and industry applications , robotics and control systems , signal processing and analysis , transportation

A differential probe-fed liquid crystal (LC)-based frequency tunable circular-ring patch antenna is presented. Besides, cavity model is extended to analyze the LC-based antenna for the differential operation. According to the cavity model, the permittivity and loss tangent of the LC are extracted from the measured differential reflection coefficients. Acceptable agreements among the measurement, simulation, and calculation for differential impedances, reflection coefficients, and radiation patterns are obtained and also validate the extraction method and model. More importantly, the extended cavity model can provide a deep physical insight into the LC-based antenna.

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