Patent ID: 6703911
Filing Date: 2004-03-09
Classification: H01P

Abstract:
A sharp-tuned very high frequency (VHF) elliptic filter, comprising:a conductive enclosure that defines a signal path compatible with propagation of radio frequency (RF) energy in some portion of the VHF frequency range; a VHF-compatible input penetration configured to allow RF energy arriving at said enclosure to pass within; a VHF-compatible input coupling device configured to allow the RF energy impressed at the input penetration to radiate inside said conductive enclosure; a plurality of RF resonators within said enclosure, each configured to absorb and reradiate the RF energy; a plurality of RF coupling adjusters within said enclosure, each configured to restrict propagation of RF energy from one resonator to the next; a conductive baffle within said enclosure, so positioned that a portion of the signal path exists on both sides of said baffle; an internal coupling mechanism, configured to transfer RF energy through said conductive baffle; a VHF-compatible output penetration configured to allow RF energy present within said enclosure to pass out; and a VHF-compatible output coupling device configured to allow the RF energy present within said conductive enclosure to couple to said output penetration.