This thesis introduced and investigated a new concept in the development of a 2X2 polarization switchable patch antenna array for polarization modulation. Polarization modulation is a technique to modulate digital information using different polarization of the electromagnetic wave. The existing waveform based modulation techniques are well developed and start approaching to their performance limits. Polarization modulation provides a new modulation dimension for wireless communications and can further increase data throughput. A four-port circular patch antenna is presented and investigated for the implementation of polarization modulation. It has four ports, each excites radiation of a different polarization. A single pole four throw RF switch is used to switch between the ports depending on the information symbol to be transmitted. Then, the antenna is transformed to a 2X2 antenna array to increase the directivity and gain. The antenna is studied numerically and it shows good performance.


Xuanhui Wu

First Committee Member

Han Way Huang

Second Committee Member

Qun Zhang

Date of Degree




Document Type



Master of Science (MS)


Electrical and Computer Engineering and Technology


Science, Engineering and Technology

Creative Commons License

Creative Commons Attribution 4.0 License
This work is licensed under a Creative Commons Attribution 4.0 License.



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