Variable radio frequency band filter

Details Variable radio frequency band filter Variable radio frequency band filter

2007-04-17

2007-04-17

Pascal, Robert (Department: 2817)

Wave transmission lines and networks

Coupling networks

Wave filters including long line elements

C333S224000, C333S232000

Reexamination Certificate

active

10924379

ABSTRACT:
A variable radio frequency band filter capable of varying the resonance frequency band comprises a housing having a support; a number of resonator rods arranged along the longitudinal direction of the housing; at least one tuning rod positioned on top of the resonator rods; a tuning support extending through the respective tuning rods along the longitudinal direction of the housing and adapted to slide on top of the respective resonator rods to vary the position of the tuning rods; and a frequency variation unit positioned on a lateral surface of the housing. The frequency variation unit being coupled to an end of the tuning support and adapted to vary the position of the tuning rods, as the tuning support is slid, according to the frequency band.

REFERENCES:
patent: 5184096 (1993-02-01), Wakino et al.
patent: 6147577 (2000-11-01), Cavey
patent: 6262639 (2001-07-01), Shu et al.
patent: 6353373 (2002-03-01), Liang
patent: 2000-295010 (2000-10-01), None
patent: 2001-127502 (2001-05-01), None

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