IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0692556
(2010-01-22)
|
등록번호 |
US-8203500
(2012-06-19)
|
발명자
/ 주소 |
- Honda, Royden M.
- Conley, Robert J.
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
3 인용 특허 :
27 |
초록
▼
Antennas that can transceive signals in an elliptically-polarized, omni-directional manner are described. In an example embodiment, an antenna comprises two elements proximally located to each other at a predetermined distance, such that two orthogonally-polarized omni-directional electromagnetic wa
Antennas that can transceive signals in an elliptically-polarized, omni-directional manner are described. In an example embodiment, an antenna comprises two elements proximally located to each other at a predetermined distance, such that two orthogonally-polarized omni-directional electromagnetic waves are tranceived. In a further example, the two elements are supported by an internal printed circuit, the printed circuit including conductors configured to supply a feed to the elements, which may be contained within a radome. Alternate embodiments comprise a plurality of elements of varying lengths.
대표청구항
▼
1. An antenna comprising: a first electrically conductive surface and a second electrically conductive surface, the first surface forming a first internal cavity and the second surface forming a second internal cavity, the first surface forming a first opening configured to allow radio frequency (RF
1. An antenna comprising: a first electrically conductive surface and a second electrically conductive surface, the first surface forming a first internal cavity and the second surface forming a second internal cavity, the first surface forming a first opening configured to allow radio frequency (RF) energy access to the first internal cavity,wherein the first surface is positioned proximate to the second surface, the first surface and the second surface being collinearly aligned, the first surface and the second surface being separated by a predetermined distance; anda structural member comprising a printed circuit, the structural member coupled to the first surface and the second surface, the structural member supporting the first surface and the second surface, the printed circuit comprising a plurality of conductors electrically coupled to the first surface and the second surface. 2. The antenna as recited in claim 1, the printed circuit comprising a first electrically conductive feed configured to induce a first electric field across the first opening to energize a horizontal component of an electromagnetic wave, and a second electrically conductive feed electrically coupled to the first surface and configured to induce a second electric field across the first and second surfaces to energize a vertical component of the electromagnetic wave. 3. The antenna as recited in claim 1, wherein the first surface has a cross-sectional shape comprising at least one of a substantially circular shape, a substantially elliptical shape, a substantially spiraling shape, or a substantially polygonal shape; and wherein the second surface has a cross-sectional shape comprising at least one of a substantially circular shape, a substantially elliptical shape, a substantially spiraling shape, or a substantially polygonal shape. 4. The antenna as recited in claim 1, wherein the first surface is electrically coupled to the second surface. 5. The antenna as recited in claim 1, wherein the conductors comprise a first distribution member electrically coupled to the first surface to distribute electrical energy to substantially evenly energize the first surface, and a second distribution member electrically coupled to the second surface to distribute electrical energy to substantially evenly energize the second surface. 6. The antenna as recited in claim 5, wherein the first distribution member and the second distribution member are substantially planar, are coplanar, and are separated by a predetermined gap. 7. The antenna as recited in claim 1, wherein the printed circuit comprises: a first layer comprising a first electrical conductor, the first electrical conductor configured to energize a horizontal component of an electromagnetic wave;a second layer comprising a dielectric material;a third layer comprising a second electrical conductor, the second electrical conductor configured as a ground for the first and third electrical conductors, the second electrical conductor being electrically coupled to the first surface or the second surface;a fourth layer comprising a dielectric material;a fifth layer comprising a third electrical conductor, the third electrical conductor configured to energize a vertical component of the electromagnetic wave;a sixth layer comprising a dielectric material; anda seventh layer comprising a fourth electrical conductor, the fourth electrical conductor configured as a ground for the third electrical conductor, the fourth electrical conductor being electrically coupled to the first surface and the second surface. 8. The antenna as recited in claim 1, wherein the first surface and the second surface are configured to form a dipole, the dipole configured to produce a first omni-directional electromagnetic wave, the first electromagnetic wave being linearly-polarized, and wherein the first opening and a second opening in the second surface are configured to produce a second omni-directional electromagnetic wave, the second electromagnetic wave being orthogonally-polarized relative to the first electromagnetic wave. 9. The antenna as recited in claim 1, further comprising: a first phase modulator configured to adjust a phase of a first signal being carried on at least one of the plurality of conductors;a first amplitude modulator configured to adjust a magnitude of the first signal; anda second amplitude modulator configured to adjust a magnitude of a second signal being carried on at least one other of the plurality of conductors, wherein a vector sum of the first signal and the second signal is configurable to produce a desired gain and a desired polarization. 10. The antenna as recited in claim 1, wherein the first surface and the second surface each have two ends, and wherein at least one end of the first surface and/or at least one end of the second surface is electrically coupled to an electrically conductive end cap. 11. The antenna as recited in claim 1, wherein a length of the antenna is responsive to a wavelength of a wireless signal to be transceived by the antenna, the antenna further comprising a radome that at least partially surrounds the antenna, the radome having a cross-sectional shape, the cross-sectional shape being a substantially circular shape, or a substantially elliptical shape, or a substantially rectangular shape,wherein the radome is a structural radome, and wherein a smallest dimension of the cross-sectional shape of the structural radome is less than 0.2 times the wavelength of the wireless signal being transceived by the antenna. 12. The antenna as recited in claim 1, wherein a length of the antenna is responsive to a wavelength of a wireless signal to be transceived by the antenna, the antenna further comprising a radome that at least partially surrounds the antenna, the radome having a cross-sectional shape, the cross-sectional shape being a substantially circular shape, or a substantially elliptical shape, or a substantially rectangular shape,wherein the radome is a non-structural radome, and wherein a smallest dimension of the cross-sectional shape of the non-structural radome is less than 0.1 times the wavelength of the wireless signal being tranceived by the antenna. 13. An array comprising a plurality of the antennas as recited in claim 1. 14. The antenna as recited in claim 1, wherein the printed circuit is located partially within the first internal cavity and partially within the second internal cavity, the printed circuit further configured to provide structural support to the first surface and the second surface. 15. The antenna as recited in claim 1, wherein the first surface and the second surface are unequal in length and wherein a shorter of the first and second surfaces includes an end cap sealed at an end proximal to the longer of the surfaces, and the shorter surface is configured to act as an RF choke for the antenna. 16. An antenna comprising: a first electrically conductive surface and a second electrically conductive surface, the first surface forming a first internal cavity and the second surface substantially forming a plane, the first surface forming an opening configured to allow radio frequency (RF) energy access to the first internal cavity,wherein the first surface has a cross-sectional shape comprises at least one of a substantially circular shape, a substantially elliptical shape, a substantially spiraling shape, or a substantially polygonal shape, andwherein an end of the first surface is positioned proximate to the second surface, the first surface being normal to the second surface, the first surface and the second surface being separated by a predetermined distance;a first electrically conductive feed, the first electrically conductive feed configured to induce a first electric field across the opening to energize a horizontal component of an omni-directional electromagnetic wave;a second electrically conductive feed, the second electrically conductive feed electrically coupled to the first surface and configured to induce a second electric field to energize a vertical component of the omni-directional electromagnetic wave; anda first phase modulator to adjust a phase of one of the vertical or horizontal components of the omni-directional electromagnetic wave;a first amplitude modulator configured to adjust a magnitude of the horizontal component of the omni-directional electromagnetic wave; anda second amplitude modulator to adjust a magnitude of the vertical component of the omni-directional electromagnetic wave, wherein a vector sum of the horizontal and vertical components of the omni-directional electromagnetic wave is configurable to produce a desired gain and a desired polarization. 17. The antenna as recited in claim 16, wherein a length of the antenna is set responsive to a wavelength of a wireless signal to be transceived by the antenna, the antenna further comprising a radome that at least partially surrounds the antenna, the radome having a cross-sectional shape, the cross-sectional shape being a substantially circular shape, or a substantially elliptical shape, or a substantially rectangular shape,wherein when the radome comprises: a structural radome, a smallest dimension of the cross-sectional shape of the structural radome is less than 0.2 times the wavelength of the wireless signal being transceived by the antenna, ora non-structural radome, the smallest dimension of the cross-sectional shape of the non-structural radome is less than 0.1 times the wavelength of the wireless signal being transceived by the antenna. 18. An array comprising a plurality of the antennas as recited in claim 16. 19. The antenna as recited in claim 16, wherein the second surface comprises a printed circuit, the printed circuit comprising a plurality of conductors electrically coupled to the first surface and the second surface.
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