Abstract
In this paper, a wideband multilayer transmitarray antenna is designed for Ku frequency band. The unit cell is designed at 12GHz using frequency selective surface structure. Double square ring with center patch based multilayer unit cell is simulated. The effect of substrate thickness variation on transmission coefficient magnitude and phase range is discussed. The horn antenna designed at X-band will be used as feed source for transmitarray antenna. Transmitarray simulation results show wide impedance bandwidth from 10 to 13GHz. Wide gain bandwidth of 1.975GHz with peak gain of 18.96dB is achieved. The proposed transmitarray design will find applications in high gain, directional, low profile antennas for X-band communication systems.
Highlights
The popularity of transmitarray (TA) antennas in the high gain antenna family have increased in recent years [1,2,3,4,5,6]
Transmitarray antennas provide a solution to the problem of feed blockage by placing the source antenna on the backside of multilayer space fed arrays
A new double square ring with center patch unit cell is designed at 12GHz using low-cost FR4 substrate
Summary
The popularity of transmitarray (TA) antennas in the high gain antenna family have increased in recent years [1,2,3,4,5,6]. FSS-based transmitarray unit cells are low profile, have wider bandwidth and wider phase range. FSS multiple layers are used to enhance the phase range, bandpass filtering and increasing the gain [3, 32,33,34,35].
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