Abstract
This paper presents a new design of reconfigura- ble plasma antenna array using commercial fluorescent tube. A round shape reconfigurable plasma antenna array is proposed to collimate beam radiated by an omnidirec- tional antenna (monopole antenna) operating at 2.4 GHz in particular direction. The antenna design consists of a monopole antenna located at the center of a circular alu- minum ground. The monopole antenna is surrounded by a cylindrical shell of conducting plasma. The plasma shield consists of 12 commercial fluorescent tubes aligned in series containing a mixture of argon gas and mercury vapor which upon electrification forms plasma columns. The plasma behaves as a conductor and acts as a reflector in radiation, in the condition where plasma frequency, ωp is higher than the operating frequency. From this concepts, when all plasma elements are activated or switched to ON, the radiation signal from the monopole antenna will trapped inside the plasma blanket and meanwhile when one or more plasma elements is deactivated (switched OFF), the radiation from the monopole antenna will es- cape. This antenna has the capability to change its patterns with beam direction at 0°, 30°, 60°, 90°, 120°, 150°, 180°, 210°, 240°, 270°, 300° and 330° at frequency 2.4 GHz. The proposed antenna has been successfully fabricated and measured with conclusive results.
Highlights
The term plasma is often referred to as the fourth state of matter
The new concepts of reconfigurable and beam steering were implemented to design this antenna by using plasma element instead of metal element
This paper is structured as follows: Section 2 describes the antenna design and structure, Section 3 is focused on the analysis of reconfigurable plasma antenna array, in Sec. 4 results and discussion are given, and Section 5 is conclusion
Summary
The term plasma is often referred to as the fourth state of matter. As the temperature increases, molecules become more energetic and transform in the sequence solid to liquid to gas and plasma. In the present paper the main objective is to design and develop reconfigurable plasma antenna array using fluorescent tube for Wi-Fi application at frequency 2.4 GHz. This paper will discuss and explain the concept of using plasma elements as reconfigurable antennas rather than using metallic antenna. The new concepts of reconfigurable and beam steering were implemented to design this antenna by using plasma element instead of metal element. The special properties of plasma which can be rapidly activated (switch ON) and de-activated (switch OFF) in few second can be advantage to design and develop reconfigurable radiation pattern antenna. Simulated and measured results of tests on the three antennas are presented and compared to demonstrate the performance of the proposed antennas These results confirmed that the main beam directions can be pointed to the desired direction by controlling the switched ON and switched OFF of the fluorescent tube. This paper is structured as follows: Section 2 describes the antenna design and structure, Section 3 is focused on the analysis of reconfigurable plasma antenna array, in Sec. 4 results and discussion are given, and Section 5 is conclusion
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
