Simulation and manufacturing of a miniaturized Exponential UWB TEM horn antenna for UWB Radar applications

Héctor Dave Orrillo Ascama, Roberto Kenji Hiramatsu, Alexandre M. de Oliveira, Carlos R. P. Dionisio, Sergio Takeo Kofuji


This paper presents the parameterization of the structure of a miniaturized exponential UWB TEM horn antenna and its effect on the matching impedance and directivity. In addition, a microstrip balun that feeds the antenna was proposed in order to improve the balance, and the return loss for low frequencies. Both the antenna and the microstrip balun were simulated to obtain a final high performance model to be manufactured at a later time. The proposed antenna operates in a frequency range from 3.2 GHz to 7.5 GHz, meeting the standards established by the FCC and the ETSI for ultra-wideband technology. Moreover, based on these characteristics, the antenna have many UWB radar applications such as monitoring of structures (buildings, bridges, etc.), anti-collision radar, vital signs detection, and long-distance communications, as a result of its high gain around 15 dB.

Full Text:



Y. Najjar, M. Moneer, N. Dib. "Design of Optimum Gain Pyramidal Horn with Improved Formulas Using Particle Swarm Optimization``. in Int J RF and Microwave CAE 17, pp.505-511, June 2007.

R. Todd Lee and Glenn S. Smith. "On the Characteristic Impedance of the TEM Horn Antenna``. IEEE Transactions on antennas and propagation. Vol. 52, N°. 1, January 2004.

Chung, K., S. Pyun and J. Choi. "Design of an ultrawide-band TEM horn antenna with a microstrip-type balun``. IEEE Trans. Antennas and Propag.,V ol. 53,No. 10,3410–3413, October 2005.

F. Karshenas, A. R. Mallahzadeh, and A. Imani. "Modified TEM Horn Antenna for Wideband Applications``. 13th International Symposium on Antenna Technology and Applied Electromagnetics and the Canadian Radio Sciences Meeting, April 2009.

Mohammadreza Khorshidi and Manouchehr Kamyab. "New exponential TEM horn antenna with binomial impedance taper``. AEU - International Journal of Electronics and Communications. Elsevier B.V. 2009.

D. M. Pozar, Microwave Engineering, 2nd Ed . New York:Wiley, 1998, pp. 160–167.

J. W. Duncan and V. P. Minerva. "100:1 Bandwidth Balun Transformer``. IRE Proc., vol. 48, February 1960, pp. 156-164.



  • There are currently no refbacks.

© Copyright 2007-2016 JMOe Brazilian Microwave and Optoelectronics Society (SBMO) and Brazilian Society of Electromagnetism (SBMag)