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International Journal of Antennas and Propagation
Volume 2014, Article ID 847475, 8 pages
Research Article

Two-Element Tapered Slot Antenna Array for Terahertz Resonant Tunneling Diode Oscillators

1School of Electronics and Information Engineering, Tianjin Polytechnic University, Tianjin 300387, China
2School of Electronic Information Engineering, Tianjin University, Tianjin 300072, China

Received 23 June 2014; Revised 29 August 2014; Accepted 3 September 2014; Published 14 October 2014

Academic Editor: Jaume Anguera

Copyright © 2014 Jianxiong Li et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Two-element tapered slot antenna (TSA) array for terahertz (THz) resonant tunneling diode (RTD) oscillators is proposed in this paper. The proposed TSA array has the advantages of both the high directivity and high gain at the horizontal direction and hence can facilitate the horizontal communication between the RTD oscillators and other integrated circuit chips. A MIM (metal-insulator-metal) stub with a T-shaped slot is used to reduce the mutual coupling between the TSA elements. The validity and feasibility of the proposed TSA array have been simulated and analyzed by the ANSYS/ANSOFT’s High Frequency Structure Simulator (HFSS). Detailed modeling approaches and theoretical analysis of the proposed TSA array have been fully addressed. The simulation results show that the mutual coupling between the TSA elements is reduced below −40 dB. Furthermore, at 500 GHz, the directivity, the gain, and the half power beam width (HPBW) at the E-plane of the proposed TSA array are 12.18 dB, 13.09 dB, and 61°, respectively. The proposed analytical method and achieved performance are very promising for the antenna array integrated with the RTD oscillators at the THz frequency and could pave the way to the design of the THz antenna array for the RTD oscillators.