A high gain patch fed horn antenna for millimeter wave imaging receiver

Rownak Shireen; Timothy Hwang; Shouyuan Shi; D. W. Prather

doi:10.1117/12.630867

7 November 2005 A high gain patch fed horn antenna for millimeter wave imaging receiver

Rownak Shireen, Timothy Hwang, Shouyuan Shi, D. W. Prather

Proceedings Volume 5989, Technologies for Optical Countermeasures II; Femtosecond Phenomena II; and Passive Millimetre-Wave and Terahertz Imaging II; 59891A (2005) https://doi.org/10.1117/12.630867
Event: European Symposium on Optics and Photonics for Defence and Security, 2005, Bruges, Belgium

Abstract

In this paper, antennas that combine transitions from microstrip line / coplanar waveguide (CPW) to horn antenna in a single unit are presented. Conventional single layer microstrip patch antennas inherently suffer narrow operation bandwidth; to widen the frequency bandwidth, stacked patch antennas are used and high gain is achieved from the horn antenna. Here, microstrip line / CPW directly feeds the bottom patch while the top patch couples parasitically to the bottom patch. For -10 dB return loss, 25% bandwidth is achieved for both microstrip line to horn antenna (MSLTHA) at center frequency f₀=17.5 GHz and for CPW to horn antenna (CPWTHA) at f₀=97 GHz. The designs were optimized using 3D Finite Element Method (FEM) software HFSS by Ansoft Corporation. The optimal design of MSLTHA has been fabricated and characterized. The return loss and far field radiation pattern are measured and has been found in very good agreement with the simulation results.

Citation Download Citation

Rownak Shireen, Timothy Hwang, Shouyuan Shi, and D. W. Prather "A high gain patch fed horn antenna for millimeter wave imaging receiver", Proc. SPIE 5989, Technologies for Optical Countermeasures II; Femtosecond Phenomena II; and Passive Millimetre-Wave and Terahertz Imaging II, 59891A (7 November 2005); https://doi.org/10.1117/12.630867

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KEYWORDS

Antennas

Waveguides

Millimeter wave imaging

Receivers

Extremely high frequency

Finite element methods

Imaging systems

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