Wave transmission lines and networks – Coupling networks – Wave filters including long line elements
Patent
1994-10-07
1998-02-03
Lee, Benny
Wave transmission lines and networks
Coupling networks
Wave filters including long line elements
3332191, H01P 120, H01P 710
Patent
active
057149194
ABSTRACT:
The dielectric notch filter of the invention includes: a transmission line for transmitting a high-frequency signal; input and output terminals provided at both ends of the transmission line; a ground conductor for supplying a ground potential; and a dielectric resonator connected to the ground conductor and the transmission line. The dielectric notch filter further includes an impedance matching element connected to the ground conductor and the transmission line in parallel with the dielectric resonator. The dielectric resonator includes: a cavity connected to the ground conductor; a dielectric block provided in the cavity; a coupling device coupled with an electromagnetic field produced in the cavity; and a coupling adjusting line for connecting the coupling device to the transmission line and for adjusting the degree of electromagnetic coupling.
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Cohn, "Microwave Bandpass Filters Containing High-Q Dieelctric Resonators," IEEE Transactions on Microwave . . . , vol. MTT-16, No. 4, Apr. 1968, pp. 218-227.
Hatanaka Masami
Ishizaki Toshio
Nakamura Toshiaki
Saka Yuji
Satoh Yuki
Lee Benny
Matsushita Electric - Industrial Co., Ltd.
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