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The family of tapered slot antennas (TSA), has good electrical performance including gain, relatively low side lobes, a circular symmetric main beam and practically constant impedance over a broad frequency band. Fabrication on thin, flexible substrates allows the TSA to be conformed over a given body, such as an aircraft wing or a piece of clothing for wearable network. Impedance matching is a major...
Recently, a new transmission line concept, called gap-waveguide, has been introduced. This technology generates a quasi-TEM mode in the gap between parallel metal plates and prohibits all other modes to propagate by making use of artificial magnetic conductors (AMCs) in the forms of e.g. lid of nails or mushrooms-type EBG surfaces. It has been shown how such geometry can replace standard microstrip...
A new broadband slot antenna is developed, which is fed on the coplanar waveguide (CPW), which is fed that, when the relative permittivity is lower (epsivr=2.2) and the substrate is thinner (h=0.8mm). The relevant simulation and calculation are performed by using CST Microwave Studio. The return loss curves and the radiation patterns of this new antenna are given. The results of simulation show that...
Microstrip Antennas (MSAs) consist of a metallic radiating patch on one side of thin dielectric substrate and other side is ground plane. Most important advantages of MSAs are low profile, light weight and compatibility with integrated circuit technology. MSAs are used in mobile communication, satellite communication, radar, direct broadcasting, global positioning systems and remote sensing. The major...
The major limitations of microstrip antennas (MSAs) are their narrow impedance bandwidth, small gain and low power handling capability. A half U-slot MSA with shorting wall has been designed and experimentally verified. Its center frequency is observed at 2.66 GHz. The bandwidth is 688 MHz and percentage bandwidth is 25.6% has been obtained while radiation efficiency is above 94% for the operating...
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