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The next generation of SAR antennas are expected to operate in dual linear polarization. This implies that more demanding specification for cross-polarization isolation is required. In current SAR antenna designs the acceptable cross-pol level (within the 3dB beamwidth of the copolar patterns) was −20dB. For the new generation of SAR antennas the cross-pol level is expected to be better than −25dB...
There is a lot of interest in vane-loaded cylindrical wave-guiding structures for fast-wave devices. Dispersion and interaction impedance are the two basic characteristics defining the structures for their relative merits and demerits for an intended application. A mm-wave vane loaded structure is evaluated for these parameters by using a non-resonant perturbation (NRP) technique. The results are...
Operating speeds of data handling systems for onboard spacecraft applications are ever increasing so as to meet the performance requirements like high resolution, stereoscopic imaging etc., of complex remote sensing payloads. In such applications, the Printed Circuit Boards (PCBs) used for realization of hardware are not simple interconnection platforms only, but are required to provide matched impedance...
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