A compact open complementary split ring resonator inspired triband reconfigurable coplanar waveguide fed antenna

Abstract

This paper presents the implementation of open complimentary split ring resonator (OCSRR) structure in small rectangular radiating elements to achieve triple band and dual band reconfigurability using PIN diode. The proposed design is a coplanar waveguide fed structure and consists of three small radiating elements, whereas two OCSRR structures are coupled with the two‐radiating elements. The third radiating element embedded with OCSRR is connected using a PIN diode. Under DC biasing conditions the whole design resonates at three frequencies, that is, 1.9, 3.8, and 5.5 normalGnormalHnormalz, whereas the proposed design switches to dual band operation at 2.6 and 5.5 normalGnormalHnormalz in the diode ‘OFF’ state. The proposed structure is designed and fabricated on a single sided ungrounded FR 4 substrate. Overall, a good agreement between simulated and measured results is observed. It is also observed that the radiation patterns of the proposed antenna are the same with gains of 4.5, 3.2, and 2.5 normaldnormalBnormali at 1.9, 3.8, and 5.5 normalGnormalHnormalz in the PIN diode ‘ON’ state, respectively, whereas in the diode ‘OFF’ state, at 2.6 normalGnormalHnormalz the gain is 4 normaldnormalBnormali and at 5.5 normalGnormalHnormalz the gain is 2.5 normaldnormalBnormali.

A Miniaturized CPW-Fed Reconfigurable Antenna with a Single-Dual Band and an Asymmetric Ground Plane for Switchable Band Wireless Applications

“…The slotted patch antenna is proposed by Rasool et al [14], which shows that the recent wireless devices need the technique of reconfigurability and flexibility in the antenna structure. In the changing switching states, the antenna achieves the various, frequency modes.…”