Design and Modeling of New UWB Metamaterial Planar Cavity Antennas with Shrinking of the Physical Size for Modern Transceivers
Figure 2
Typical CRLH planar unit cell topology along with its circuit model. The series capacitance is implemented as O-shaped gap capacitance and the shunt inductance as spiral and rectangular inductors which connected to ground plane through metallic via holes. The substrate FR_4 with height mm, and tan δ = 1 × 10−3 has been used in all of the structures of this paper.
(a) O-formed unit cell composed of O-shaped gap capacitance acts like left-handed capacitance (), and spiral inductor connected to ground plane through a metallic via hole that will be established left-handed inductor ()
(b) O-shaped unit cell composed of O-formed gap capacitance that performs as series capacitance () and rectangular inductor which through metallic via hole connected to ground plane as do like shunt inductor ()
