Microstrip Antenna
First Claim
1. An antenna, comprising:
- a power feed network comprising;
a ladder balun feed element operably interconnected with a RF feed;
a twin lead transmission line, each lead operably interconnected with a side of said ladder balun feed element;
a ground plane located in proximity to said power feed network and separated therefrom by a dielectric material and electrically coupled thereto when an RF signal is provided to said power feed network;
a plurality of radiating elements operably interconnected with said power feed network and operable to transmit and receive RF signals having frequencies in a predetermined frequency range, said frequency range having a center frequency, each of said radiating elements operably interconnected with one of said twin lead transmission lines, and wherein said ground plane is operable to act as a reflector relative to said radiating elements over said frequency range thereby providing enhanced gain for the antenna over said frequency range.
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0 Petitions
Accused Products
Abstract
An antenna is provided having a relatively wide bandwidth of operation. The antenna may be a printed circuit board dipole antenna having a ladder balun feed network coupled to a ground plane and dipole radiating elements located about one-quarter wavelength from an edge of the ground plane. The ground plane acts as a reflector to increase antenna gain. A plurality of the antennas may be provided in an array configuration with antennas being located in relatively close proximity and being isolated from other antennas in the array. An array of antennas may be used to provide a wireless link in a wireless network utilizing a IEEE 802.1X frequency band.
35 Citations
19 Claims
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1. An antenna, comprising:
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a power feed network comprising;
a ladder balun feed element operably interconnected with a RF feed;
a twin lead transmission line, each lead operably interconnected with a side of said ladder balun feed element;
a ground plane located in proximity to said power feed network and separated therefrom by a dielectric material and electrically coupled thereto when an RF signal is provided to said power feed network;
a plurality of radiating elements operably interconnected with said power feed network and operable to transmit and receive RF signals having frequencies in a predetermined frequency range, said frequency range having a center frequency, each of said radiating elements operably interconnected with one of said twin lead transmission lines, and wherein said ground plane is operable to act as a reflector relative to said radiating elements over said frequency range thereby providing enhanced gain for the antenna over said frequency range. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. An array of antennas, comprising:
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a plurality of antennas, each comprising;
a feed network comprising a ladder balun which provides anti-phase currents to an unbalanced twin lead transmission line;
a ground plane located in proximity to said feed network and separated therefrom by a dielectric material and electrically coupled thereto when a RF signal is provided to said feed network; and
dipole radiating elements operably interconnected to each of said twin lead transmission lines, wherein each of said antennas have approximately 5 dBi of gain and an impedance bandwidth that extends over a frequency range from approximately 5.15 GHz to approximately 5.85 GHz, and wherein each of said plurality of antennas are located in close proximity to other of said antennas and have at least approximately −
20 dB isolation between each of said antennas. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19)
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Specification