Abstract:
A metamaterial antenna with slots is investigated in this doctoral work for
a new type of antenna for mobile application, which provides wide bandwidth,
miniature size and high gain. This antenna exhibits handedness, left-handedness
and right-handedness in the resonant frequency with good radiation characteristics
with Composite Right/Left Handed Transmission line (CRLH TL) Split Ring
Resonator (SRR) and PATCH as its central elements. The conventional microstrip
antennas have a conducting patch printed on a grounded dielectric substrate and
operate as resonant cavity elements. This operation, however, leads inherently to
narrow impedance bandwidth, which is a barrier for microstrip antennas to be
used for wireless communications. Hence, they are generally used for multi-
standard wireless communication systems as they do not offer multi-band
performance. Antennas for next generation wireless communication systems are
required to exhibit resonance in multiple bands that are not harmonically related
in order to accommodate multiple wireless standards within the same device.
Additionally, they are required to have a compact form-factor and relatively high
radiation efficiency.