Dielectric filter

Details Dielectric filter Dielectric filter

1981-07-01

1983-10-18

Nussbaum, Marvin L.

Wave transmission lines and networks

Coupling networks

Wave filters including long line elements

333207, 333209, 333212, 333223, H01P 1205, H01P 1208, H01P 704, H01P 706

Patent

active

044108680

ABSTRACT:
A dielectric filter in which a plurality of holes are made at predetermined intervals in a dielectric block of small dielectric loss, and a conductor film is formed on the surface of the dielectric block including the interior surfaces of the holes to constitute resonators using the conductor film on the interior surface of each hole as an inner conductor of the resonator and the conductive film on the outer peripheral surface of the dielectric block as an outer conductor, the resonance frequency of the resonators being based on the depth of each hole.

REFERENCES:
patent: 3505618 (1970-04-01), McKee
patent: 4216448 (1980-08-01), Kasuga et al.
patent: 4291288 (1981-09-01), Young et al.
Wakino et al.-"Quarter Wave Dielectric Transmission Line Diplexer for Land Mobile Communications", 1979 IEEE MTT-S International Microwave Symposium Digest, IEEE Catalog No. 79CH 1439-9 MTT; pp. 278-280.
Fukasawa et al.-"Miniaturized Dielectric Radio Frequency Filter for 850 MHz Band Mobile Radio", IEEE 26th TTC, Mar. 1979; pp. 181-186.
Kamashita et al.-"Compact Band Pass Filters for 800 MHz Band Land Mobile Equipments", Proceedings of the IEEE, vol. 67, No. 12, Dec. 1979, pp. 1666-1669.

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