Equivalent Circuit Modeling of a Semiconductor-Integrated Bow-Tie Antenna for the Physical Interpretation of the Radiation Characteristics in the Terahertz Region

Hirokazu YAMAKURA  Michihiko SUHARA  

Publication
IEICE TRANSACTIONS on Electronics   Vol.E99-C   No.12   pp.1312-1322
Publication Date: 2016/12/01
Online ISSN: 1745-1353
Type of Manuscript: PAPER
Category: Semiconductor Materials and Devices
Keyword: 
semiconductor-integrated bow-tie antenna,  equivalent circuit,  terahertz device modeling,  

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Summary: 
We have derived the physics-based equivalent circuit model of a semiconductor-integrated bow-tie antenna (BTA) for expressing its impedance and radiation characteristics as a terahertz transmitter. The equivalent circuit branches and components, consisting of 16 RLC parameters are determined based on electromagnetic simulations. All the values of the circuit elements are identified using the particle swarm optimization (PSO) that is one of the modern multi-purpose optimization methods. Moreover, each element value can also be explained by the structure of the semiconductor-integrated BTA, the device size, and the material parameters.