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Summary form only given. Measurements of the Cosmic Mirowave Background's (CMB) temperature have provided new insight into the origins of our universe, and these experimental successes have been driven by advancements in detector technology. The next generation of experiments have just started measuring the CMB's polarization with monolithic detector arrays that integrate an antenna and filtering...
The use of planar circularly symmetric (PCS) electromagnetic band-gap (EBG) structures for optimizing the performances of single antenna elements and arrays is been discussed. The key advantage of using this sort of super structures is that they are planar and thus very cheap to manufacture with respect to alternative EBG structures based on vertical pins. In this contribution a review of the design...
This work proposes a new topology of antenna based on the use of Planar Circular Symmetric EBG with different periodicities. These periodicities are used to impose different propagation velocities of the dominant surface waves on different zones of the same dielectric substrate. The control of the dispersion characteristics guides the design together with the definition of a centered feed suitable...
Planar circularly symmetric (PCS) electromagnetic band-gap (EBG) substrates have been recently proposed to suppress the surface waves in printed technology. The major advantage of the PCS-EBGs with respect to structures based on vertical pins is the fabrication simplicity since the dielectric slabs do not need to be perforated. With respect to other planar type of EBG, an advantage is that the surface...
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