Mushroom-like Electromagnetic Band Gap based Polarization Converters for Millimeter Wave Applications

Document Type : Original Article

Authors

1 Faculty of Electronic Engineering, Menoufia University, Egypt

2 Faculty of Engineering, Kafr ElShiekh University Egypt rsity.

Abstract

Developments in radar navigation and remote sensing required rugged and inexpensive location markers and calibration targets with very large radar cross sections and a specified polarization response. Passive radar targets derived from corner reflectors were considered for this application. These targets require polarization converters for their operation. Conventional converters suffer from heavy weight, complicated structure, losses, and/or limited bandwidth. Polarization converters made of electromagnetic band gap materials are low profile, light weight, efficient, and have large bandwidth. The work presented here is a development of a simple procedure for the design of these converters. The requirements for polarization transformation are derived. The design procedure is outlined. Mushroom-like electromagnetic band gap materials using square patches are used. These materials are made polarization dependent through making single slot or two slots in the square patches. Detailed parametric study was conducted to see the effect of different parameters upon reflection phase difference. Polarization converters to transform linear polarization to linear polarization with the reflected electric field perpendicular to the incident electric field were designed.

References

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