Compact broadband antenna
First Claim
1. An antenna, comprising:
- a first conductive patch;
a second conductive patch capacitively coupled to the first conductive patch; and
a third conductive patch capacitively coupled to the first conductive patch, wherein the antenna is connected to a single feed port, and wherein one of the second conductive patch and the third conductive patch is not co-planar with the first conductive patch, wherein the first conductive patch is a feed patch, the second conductive patch is a main patch, and the third conductive patch is a parasitic patch, and wherein the second conductive patch is a dual band main patch having a first branch for resonance at a first frequency band and a second branch for resonance at a second frequency band.
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Accused Products
Abstract
Broadband multi-resonant antennas utilize capacitive coupling between multiple conductive plates for compact antenna applications. The number and design of conductive plates may be set to achieve the desired bandwidth. In one exemplary embodiment the antenna may be designed for four resonant frequencies and may include three L shaped legs each including a micro-strip conductive plate and connection pin, with configurations approximately parallel to one another. The center L shaped leg may be a feed patch with a feed pin connected to a transmitter, receiver, or transceiver. The upper L shaped leg may be a dual band main patch and ground pin. The dual band main patch may have two different branches with different lengths and areas to handle three of four desired resonant frequencies. The lower L shaped leg may be a parasitic high band patch and ground pin designed to handle one of the two higher desired resonant frequencies.
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Citations
30 Claims
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1. An antenna, comprising:
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a first conductive patch;
a second conductive patch capacitively coupled to the first conductive patch; and
a third conductive patch capacitively coupled to the first conductive patch, wherein the antenna is connected to a single feed port, and wherein one of the second conductive patch and the third conductive patch is not co-planar with the first conductive patch, wherein the first conductive patch is a feed patch, the second conductive patch is a main patch, and the third conductive patch is a parasitic patch, and wherein the second conductive patch is a dual band main patch having a first branch for resonance at a first frequency band and a second branch for resonance at a second frequency band. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. An antenna, comprising:
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a first conductive patch;
a second conductive patch capacitively coupled to the first conductive patch; and
a third conductive patch capacitively coupled to the first conductive patch, wherein the antenna is connected to a single feed port, andwherein one of the second conductive patch and the third conductive patch is not co-planar with the first conductive patch, and wherein the second conductive patch is a dual band main patch having a first branch for resonance at a first frequency band and a second branch for resonance at a second frequency band. - View Dependent Claims (23)
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24. A mobile communication device, comprising
an antenna having a single feed port connection, variable characteristic impedance, and at least four resonant frequencies which are not multiples of a base frequency; - and
at least three capacitively coupled conductive antenna elements of which the first element is connected to said single feed port, and wherein said at least three capacitively coupled antenna elements interoperate to provide the at least four resonant frequencies, wherein the at least three capacitively coupled conductive antenna elements includes a first conductive patch, a second conductive patch and a third conductive patch, each capacitively coupled to one another, and wherein one of the second conductive patch and the third conductive patch is not co-planar with the first conductive patch. - View Dependent Claims (25, 26, 27, 28)
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29. A mobile communication device, comprising:
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an antenna including a plurality of physically separate and capacitive fed conductors that resonate at multiple frequencies so as to support radio communications at GSM-800, GSM-900, DCS, and PCS frequency bands, wherein the plurality of physically separate and capacitive fed conductors includes a first conductive patch connected to a feed point, a second conductive patch connected to a first ground point, and a third conductive patch connected to a second ground point, and wherein one of the second conductive patch and the third conductive patch is not coplanar with the first conductive patch. - View Dependent Claims (30)
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Specification