Abstract
This paper presents, a composite right-handed/left-handed metamaterial (MTM) based phased shifter design at 2.4 GHz, and its performance is compared with (i) a conventional transmission line material based phase shifter, and (ii) purely left-handed material based phase shifter. The right/left-handed MTM phase shifter is designed using cascaded sections of left-handed lumped element capacitors and inductors and right-handed printed transmission line material. By optimizing the lumped-element component values, the required phase shift can be achieved. To validate the design, three phase shifters (MTM based, conventional and purely left-handed) are simulated using the Agilent-Advanced Design System (ADS) microwave circuit simulator at a design frequency of 2.4 GHz. It is shown that the MTM based phase shifter is compact in size, gives a linear phase response with low Insertion Loss (IL) values.
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