Polarization reconfigurable microstrip patch antenna is presented for 2.4–2.5 GHz wireless sensor network and WLAN applications. Dual feed degenerate mode patch is used as the starting point for ci. This paper proposes a simple polarization reconfigurable annular ring slot antenna (ARSA). The proposed ARSA is able to switch among three polarizations, i.e. Left-handed circular polarization.

• Reconfigurable Polarization Slot Antenna Tuner
• Polarization Reconfigurable Eccentric Annular Ring Slot Antenna Design

Reconfigurable Polarization Slot Antenna Tuner

A Polarization Reconfigurable Slot Antenna with a Novel Switchable Feeding Network

Abstract

A polarization reconfigurable slot antenna is proposed in this paper. The antenna consists of a microstrip line-to-slotline transition structure, two radiation slots and a switchable feeding network. The feeding network is a gradually changed ring slot with six switching diodes on it. By controlling the diodes states, the antenna can generate y-direction polarization, z-direction polarization, left-hand circular polarization and right-hand circular polarization. Detailed design considerations of the proposed antenna, simulated and measured results are presented and discussed. Measured results agree well with simulated. The results proved that the antenna can realize polarization reconfiguration effectively at 5 GHz.

Polarization Reconfigurable Eccentric Annular Ring Slot Antenna Design

• slot antenna;
• polarization;
• reconfigurable;
• PIN diodes