Marine multiband antenna
First Claim
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1. A marine multiband antenna assembly comprising:
- a base plate adapted to function as a ground plane;
an antenna extending normally from the base plate wherein the antenna comprises a lower portion mounted to the base plate and configured to resonate in the UHF band and an upper portion extending from the lower portion, configured to resonate in the FM band, and wherein the lower and upper portions are configured to resonate in the AM and VHF frequency ranges, and wherein the lower portion comprises a printed circuit board mounted normal to the base plate; and
a triangular radiator disposed on the printed circuit board and adapted to function as one half of a bow tie antenna for reception in the UHF band,whereby when the antenna assembly is mounted to a marine vessel, it can receive signals in the AM, FM, VHF, and UHF frequency ranges in a single self-contained enclosure.
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Abstract
A marine multiband antenna array includes a nearly virtual bow tie UHF antenna and a connected VHF/FM antenna that together function as an AM antenna. A diplexer separates the AM/FM radio signals from the UHF/VHF television signals.
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Citations
9 Claims
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1. A marine multiband antenna assembly comprising:
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a base plate adapted to function as a ground plane; an antenna extending normally from the base plate wherein the antenna comprises a lower portion mounted to the base plate and configured to resonate in the UHF band and an upper portion extending from the lower portion, configured to resonate in the FM band, and wherein the lower and upper portions are configured to resonate in the AM and VHF frequency ranges, and wherein the lower portion comprises a printed circuit board mounted normal to the base plate; and a triangular radiator disposed on the printed circuit board and adapted to function as one half of a bow tie antenna for reception in the UHF band, whereby when the antenna assembly is mounted to a marine vessel, it can receive signals in the AM, FM, VHF, and UHF frequency ranges in a single self-contained enclosure. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A diplexer for separating signals from a single marine multiband antenna, the diplexer comprising:
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an input adapted to connect to a marine multiband antenna; a signal splitter connected to the input for splitting signals from the antenna into first and second sides; an FM blocking circuit on the first side adapted to block signals in the FM frequency range, and a capacitor in series with the FM blocking circuit sized to block signals in the AM frequency range, wherein the resulting signal is adapted to be received by a conventional TV receiver; and a first inductor on the second side, connected in series to a second conductor and a parallel capacitor, sized to pass signals in the AM and FM frequency ranges wherein the resulting signal is adapted to be received by a conventional AM/FM receiver.
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Specification