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The present invention relates to a portable satellite antenna which is capable of implementing an accurate horizontal and vertical direction movement of a satellite antenna using a worm gear method and a screw type guide as a horizontal and vertical direction rotation unit of a satellite antenna and

The present invention relates to a portable satellite antenna which is capable of implementing an accurate horizontal and vertical direction movement of a satellite antenna using a worm gear method and a screw type guide as a horizontal and vertical direction rotation unit of a satellite antenna and preventing an entangling phenomenon of an electric wire even when an antenna is rotated in a horizontal direction.

대표청구항 ▼

The present invention relates to a portable satellite antenna which is capable of implementing an accurate horizontal and vertical direction movement of a satellite antenna using a worm gear method and a screw type guide as a horizontal and vertical direction rotation unit of a satellite antenna and

The present invention relates to a portable satellite antenna which is capable of implementing an accurate horizontal and vertical direction movement of a satellite antenna using a worm gear method and a screw type guide as a horizontal and vertical direction rotation unit of a satellite antenna and preventing an entangling phenomenon of an electric wire even when an antenna is rotated in a horizontal direction. part interdigitated end portions to provide increased capacitive coupling between the adjacent dipole antenna elements. 17. A wideband phased array antenna according to claim 16 wherein each leg comprises an elongated body portion, an enlarged width end portion connected to an end of the elongated body portion, and a plurality of fingers extending outwardly from said enlarged width end portion. 18. A wideband phased array antenna according to claim 17 wherein the plurality of fingers comprises at least four fingers. 19. A wideband phased array antenna according to claim 16 wherein the wideband phased array antenna has a desired frequency range; and wherein the spacing between the end portions of adjacent legs is less than about one-half a wavelength of a highest desired frequency. 20. A wideband phased array antenna according to claim 16 wherein said array of dipole antenna elements comprises first and second sets of orthogonal dipole antenna elements to provide dual polarization. 21. A wideband phased array antenna according to claim 16 further comprising: a substrate carrying said array of dipole antenna elements; and a ground plane adjacent said array of dipole antenna elements. 22. A wideband phased array antenna according to claim 21 wherein the wideband phased array antenna has a desired frequency range; and wherein said ground plane is spaced from said array of dipole antenna elements less than about one-half a wavelength of a highest desired frequency. 23. A wideband phased array antenna according to claim 16 wherein each dipole antenna element comprises a printed conductive layer. 24. A wideband phased array antenna according to claim 16 said array of dipole antenna elements are arranged at a density in a range of about 100 to 900 per square foot. 25. A wideband phased array antenna according to claim 16 wherein said array of dipole antenna elements are sized and relatively positioned so that the wideband phased array antenna is operable over a frequency range of about 2 to 30 GHz. 26. A wideband phased array antenna according to claim 16 wherein said array of dipole antenna elements are sized and relatively positioned so that the wideband phased array antenna is operable over a scan angle of about ±60 degrees. 27. A wideband phased array antenna according to claim 16 further comprising at least one dielectric layer on said array of dipole antenna elements. 28. A method of making a wideband phased array antenna comprising: providing a flexible substrate; and forming an array of dipole antenna elements on the flexible substrate, each dipole antenna element comprising a medial feed portion and a pair of legs extending outwardly therefrom, wherein forming the array of dipole antenna elements includes shaping and positioning respective spaced apart end portions of adjacent legs of adjacent dipole antenna elements to provide increased capacitive coupling between the adjacent dipole antenna elements. 29. A method according to claim 28 wherein forming the array of dipole antenna elements comprises forming each leg with an elongated body portion, and an enlarged width end portion connected to an end of the elongated body portion. 30. A method according to claim 28 wherein shaping and positioning respective spaced apart end portions comprises forming interdigitated portions. 31. A method according to claim 30 wherein forming the array of dipole antenna elements comprises forming each leg with an elongated body portion, an enlarged width end portion connected to an end of the elongated body portion, and a plurality of fingers extending outwardly from said enlarged width end portion. 32. A method according to claim 28 wherein the wideband phased array antenna has a desired frequency range; and wherein the spacing between the end portions of adjacent legs is less than about one-half a wavelength of a highest desired frequency. 33. A method according to claim 28 wherein forming the array of dipole antenna elements com