Reconfigurable biconcave lens antenna based on plasma technology.

Area of Science:

• Electromagnetics and Applied Physics
• Plasma Science and Engineering
• Antenna Theory and Design

Background:

• Microwave lens antennas offer potential for beam steering and gain control.
• Plasma materials exhibit tunable dielectric properties, making them suitable for dynamic antenna applications.
• Controlling radiation gain electronically is crucial for advanced communication systems.

Purpose of the Study:

• To present the analytical background and design procedure for a biconcave plasma lens antenna.
• To investigate the effect of plasma ON/OFF states on antenna radiation gain.
• To demonstrate dynamic gain adjustment using plasma frequency.

Main Methods:

• Development of analytical models for plasma dielectric lenses.
• Design and simulation of a plasma lens antenna with a pyramidal horn feed.
• Experimental validation using a 1D prototype operating at 10 GHz with fluorescent lamps.

Main Results:

• The designed plasma lens antenna shows electronically controllable radiation gain.
• Switching the plasma lens ON and OFF significantly affects the antenna's radiation gain.
• The plasma frequency was experimentally shown to dynamically adjust the radiation gain.

Conclusions:

• The presented design procedure and numerical results are validated by experimental data.
• Plasma lens antennas offer a viable method for electronically tunable radiation gain.
• This technology enables dynamic control of antenna performance for advanced applications.