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The concept and latest experimental results for planar bandpass filters made from high temperature superconductors (HTS) are reported. In the proposed approach, coupling between adjacent resonators is provided by "disturbing" the resonator symmetry. This allows the realization of very narrowband filters with closely spaced resonators. Furthermore, filter(More)
Future third-generation mobile communication systems will require improved sensitivity and selectivity to support the growth in multi-media services, increased coverage, longer talk time and larger numbers of subscribers. The paper describes a transceiver for use in mobile and personal communications base transceiver stations (BTS). Key components of the(More)
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