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Dual-band HTS filter using modified dual-spiral resonators

Dual-band HTS filter using modified dual-spiral resonators

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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 can occupy an area of less than 2.75% of the area of the square loop resonator. Moreover, the resonator has a very low sensitivity to substrate thickness. The resonator structure also allows two types of couplings and, hence, allows application of cross-couplings with different signs to the direct couplings.


    1. 1)
    2. 2)
      • Huang, F., Xiong, X.: `Very compact spiral resonator implementation for narrow-band superconducting quasielliptic filter', European Microwave Conf., 2003, Munich, Germany, p. 1059–1062.
    3. 3)
      • A.M. Abu Hudrouss , A.B. Jayyousi , M.J. Lancaster . Triple-band HTS filter using dual spiral resonators with capacitive-loading. IEEE Trans. Appl. Supercond. , 3 , 1728 - 1732
    4. 4)
    5. 5)
      • L. Chen , C.Y. Tan , J. Lu , C.K. Ong , B.T.G. Tan . High-temperature superconducting dual-spiral resonators and their application in filter miniaturization. IEEE Trans. Microw. Theory Tech. , 12 , 2397 - 2402
    6. 6)
    7. 7)
    8. 8)
      • J. Zhou , M.J. Lancaster , F. Huang . Superconducting microstrip filters using compact resonators with double spiral inductors and interdigital capacitors. IEEE MTT-S Int. Microw. Symp. Dig. , 1889 - 1892
    9. 9)
      • A.B. Jayyousi , M.J. Lancaster . A gradient-based optimization technique employing determinants for the synthesis of microwave coupled filters. IEEE MTT-S Int. Microw. Symp. Dig. , 1369 - 1372
    10. 10)
      • J. Zhou , M.J. Lancaster , F. Huang , N. Roddis , D. Glynn . HTS narrow band filters at UHF band for radio astronomy applications. IEEE Trans. Appl. Supercond. , 2 , 1004 - 1007
    11. 11)

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