Wideband, stacked double C-patch antenna having gap-coupled parasitic elements
First Claim
1. A stacked, shorted double C-patch antenna comprising a first antenna element assembly comprised of at least one gap-coupled parasitic element and one directly fed antenna element, said stacked, shorted double C-patch antenna further comprising a second antenna element assembly comprised of at least one gap-coupled parasitic element and one antenna element that is conductively fed from said directly fed antenna element, said first antenna element assembly being disposed in a spaced-apart fashion from said second antenna element assembly by an intervening layer of dielectric material, said antenna having a truncated ground plane and a bandwidth that is equal to or greater than approximately 70 MHz at a frequency of approximately 850 MHz.
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Accused Products
Abstract
A stacked, shorted double C-patch antenna (100) has gap-coupled parasitic elements (102a, 106a, 102b, 106b) and one directly fed antenna element (104a). A second fed element (104b) is conductively fed from the directly fed element. The antenna has a truncated ground plane (108) and a bandwidth that is equal to or greater than approximately 70 MHz at a frequency of approximately 850 MHz. The directly fed antenna element is conductively coupled to a transmitter and to a receiver of a communications device, such as a cellular telephone.
119 Citations
18 Claims
- 1. A stacked, shorted double C-patch antenna comprising a first antenna element assembly comprised of at least one gap-coupled parasitic element and one directly fed antenna element, said stacked, shorted double C-patch antenna further comprising a second antenna element assembly comprised of at least one gap-coupled parasitic element and one antenna element that is conductively fed from said directly fed antenna element, said first antenna element assembly being disposed in a spaced-apart fashion from said second antenna element assembly by an intervening layer of dielectric material, said antenna having a truncated ground plane and a bandwidth that is equal to or greater than approximately 70 MHz at a frequency of approximately 850 MHz.
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4. An antenna structure, comprising:
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a ground plane; a first layer of dielectric material having a first surface overlying said ground plane and an opposing second surface; a first electrically conductive layer overlying said second opposing surface of said first dielectric layer, said first electrically conductive layer being differentiated into a plurality of antenna elements including a fed antenna element and at least one parasitic antenna element, individual ones of said parasitic antenna elements being disposed on opposite sides of said fed antenna element, each of said antenna elements being in the shape of a parallelogram and having one of rectangular and a non-rectangular aperture having a length that extends along a first edge of said electrically conductive layer of said element and a width that extends towards an oppositely disposed second edge of said element; a second layer of dielectric material having a first surface overlying said first electrically conductive layer and an opposing second surface; a second electrically conductive layer overlying said second opposing surface of said second dielectric layer, said second electrically conductive layer being differentiated into a plurality of antenna elements including a fed antenna element and at least one parasitic antenna element, individual ones of said parasitic antenna elements being disposed on opposite sides of said fed antenna element, each of said antenna elements being in the shape of a parallelogram and having one of rectangular and a non-rectangular aperture having a length that extends along a first edge of said electrically conductive layer of said element and a width that extends towards an oppositely disposed second edge of said element; each of said antenna elements including means for shorting said electrically conductive layer to said ground plane at a region adjacent to a third edge of said electrically conductive layer; and means for coupling radio frequency energy to said electrically conductive layer of one of said fed antenna elements for directly feeding said fed antenna element, wherein the other fed antenna element is conductively fed from said directly fed element. - View Dependent Claims (5, 6, 7, 8, 9)
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10. A cellular telephone, comprising:
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a transmitter; a receiver; and a stacked, shorted double C-patch antenna comprising gap-coupled parasitic elements and one directly fed antenna element that is conductively coupled to an output of said transmitter and to an input of said receiver, wherein said stacked, shorted double C-patch antenna comprises a first antenna element assembly comprised of at least one gap-coupled parasitic element and said one directly fed antenna element, said stacked, shorted double C-patch antenna further comprising a second antenna element assembly comprised of at least one gap-coupled parasitic element and one antenna element that is conductively-fed from said directly fed antenna element, said first antenna element assembly being disposed in a spaced-apart fashion from said second antenna element assembly by an intervening layer of dielectric material. - View Dependent Claims (11, 12)
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13. A PCMCIA module, comprising:
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a transmitter; a receiver; and a stacked, shorted double C-patch antenna comprising gap-coupled parasitic elements and one directly fed antenna element that is conductively coupled to an output of said transmitter and to an input of said receiver, wherein said stacked, shorted double C-patch antenna comprises a first antenna element assembly comprised of at least one gap-coupled parasitic element and said one directly fed antenna element, said stacked, shorted double C-patch antenna further comprising a second antenna element assembly comprised of at least one gap-coupled parasitic element and one antenna element that is conductively-fed from said directly fed antenna element, said first antenna element assembly being disposed in a spaced-apart fashion from said second antenna element assembly by an intervening layer of dielectric material. - View Dependent Claims (14)
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15. A wireless telephone, comprising:
- a transmitter;
a receiver; and a stacked, shorted double C-patch antenna comprising gap-coupled parasitic elements and one directly fed antenna element that is conductively coupled to an output of said transmitter and to an input of said receiver, wherein said stacked, shorted double C-patch antenna comprises a first antenna element assembly comprised of at least one gap-coupled parasitic element and said one directly fed antenna element, said stacked, shorted double C-patch antenna further comprising a second antenna element assembly comprised of at least one gap-coupled parasitic element and one antenna element that is conductively-fed from said directly fed antenna element, said first antenna element assembly being disposed in a spaced-apart fashion from said second antenna element assembly by an intervening layer of dielectric material. - View Dependent Claims (16)
- a transmitter;
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17. A base station for conducting bidirectional communications with a wireless telephone, comprising:
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a transmitter; a receiver; and a stacked, shorted double C-patch antenna comprising gap-coupled parasitic elements and one directly fed antenna element that is conductively coupled to an output of said transmitter and to an input of said receiver, wherein said stacked, shorted double C-patch antenna comprises a first antenna element assembly comprised of at least one gap-coupled parasitic element and said one directly fed antenna element, said stacked, shorted double C-patch antenna further comprising a second antenna element assembly comprised of at least one gap-coupled parasitic element and one antenna element that is conductively-fed from said directly fed antenna element, said first antenna element assembly being disposed in a spaced-apart fashion from said second antenna element assembly by an intervening layer of dielectric material. - View Dependent Claims (18)
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Specification