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An Asymmetric Dual-band HTS Band-pass Filter for American Mobile Phone System
The American Mobile Phone System (AMPS) has a very complex frequency allocation which is divided between two operators A and B. Therefore, high performance multiple-band system components are desired in both the downlink ...
Dual-band HTS filter using modified dual-spiral resonators
(IET Digital Library, 2010)
A symmetric dual-band filter with a centre frequency of 887 MHz is presented. The filter uses a modified structure of dual spiral resonators with interdigital capacitive load. At the same resonant frequency, the resonator ...