Isolation antenna for repeater
First Claim
1. A transmitting/receiving isolation antenna for a repeater for maintaining isolation between transmission and reception signals in a unidirection, comprising:
- a shielding unit including an electric conductor;
a first antenna of a dipole antenna type in one side of the shielding unit; and
a second antenna of a loop antenna type in an opposite side of the shielding-unit; and
an antenna device supporting unit setting up in center of the first antenna and second antenna to support the first antenna and the second antenna;
wherein the first antenna generates a radiated wave;
wherein the radiated wave forms a scattered wave in the antenna device supporting unit;
wherein the antenna device supporting unit symmetrically sets up in the center to transmit symmetrically the scattered wave to the second antenna.
1 Assignment
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Accused Products
Abstract
Provided is an isolation antenna for a repeater which can acquire high isolation by using loop and dipole antennas, which are positioned in opposite directions to each other based on a shielding means, in a unidirectional repeater generally used in broadcasting or wireless communications even though transmitting antenna/receiving antennas having a co-channel are set up closely to each other. The transmitting/receiving isolation antenna includes: a shielding means including an electric conductor; a first antenna of a dipole antenna type in one side of the shielding means; and a second antenna of a loop antenna type in an opposite side of the shielding means where the first antenna is positioned.
30 Citations
20 Claims
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1. A transmitting/receiving isolation antenna for a repeater for maintaining isolation between transmission and reception signals in a unidirection, comprising:
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a shielding unit including an electric conductor; a first antenna of a dipole antenna type in one side of the shielding unit; and a second antenna of a loop antenna type in an opposite side of the shielding-unit; and an antenna device supporting unit setting up in center of the first antenna and second antenna to support the first antenna and the second antenna; wherein the first antenna generates a radiated wave; wherein the radiated wave forms a scattered wave in the antenna device supporting unit; wherein the antenna device supporting unit symmetrically sets up in the center to transmit symmetrically the scattered wave to the second antenna. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A transmitting/receiving isolation antenna for a repeater for maintaining isolation between transmission and reception signals in a unidirection, comprising
a shielding unit including an electric conductor; -
a first antenna of a dipole antenna type in one side of the shielding unit; a second antenna of a loop antenna type in an opposite side of the shielding unit; wherein the first antenna includes; a left antenna device with a predetermined length and a straight line shape; a right antenna device which has the same size and shape as the left antenna and is symmetrically positioned adjacently to the left antenna; a feeding unit for feeding by being positioned between the left and right antenna devices; a left antenna device supporting unit for fixing the left antenna device at a predetermined distance from the shielding; and a right antenna device supporting unit which has the same size and shape as the left antenna device supporting unit and is symmetrically positioned to the left antenna device supporting unit in order to fix the right antenna device on the shielding unit at the same distance as the distance between the left antenna device and the shielding unit. - View Dependent Claims (9, 10, 11)
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12. A transmitting/receiving isolation antenna for a repeater for maintaining isolation between transmission and reception signals in a unidirection, comprising;
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a shielding unit including an electric conductor; a first antenna of a dipole antenna type in one side of the shielding unit; a second antenna of a loop antenna type in an opposite side of the shielding unit; wherein the second antenna includes; an upper antenna device which is positioned in an upper part of the shielding unit; a lower antenna device which has the same size and shape as the upper antenna device in a lower part of the shielding unit and is symmetrically positioned to the upper antenna device; a left feeding unit for feeding by being positioned in the left end of the upper antenna device; a right feeding unit for feeding by being positioned in the right end of the lower antenna device; an upper antenna device supporting unit for fixing the upper antenna device at a predetermined distance from the shielding unit and horizontally in one side of the shielding unit; and a lower antenna device supporting unit for fixing the lower antenna device at a predetermined distance from the shielding unit and horizontally in one side of the shielding unit. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19)
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20. A transmitting/receiving isolation antenna for a repeater for maintaining isolation between transmission and reception signals in a unidirection, comprising:
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a shielding unit including an electric conductor; a first antenna of a dipole antenna type in one side of the shielding unit the first antenna comprising; a left antenna device positioned in the left part of the shielding unit and a right antenna device positioned in the right part of the shielding unit, the left and right antenna devices having the same size and shape and being positioned symmetrically; and a left antenna device supporting unit and a right antenna device supporting unit fixing the left antenna device and the right antenna device, respectively, to the shielding unit, the left and right antenna device supporting units having the same size and shape and being positioned symmetrically such that the distance between the left antenna device and the shielding unit is the same as the distance between the right antenna device and the shielding unit; a second antenna of a loop antenna type in an opposite side of the shielding unit, the second antenna comprising; a lower antenna device positioned in the lower part of the shielding unit and an upper antenna device positioned in the upper part of the shielding unit, the upper and lower antenna devices having the same size and shape and being positioned symmetrically an upper antenna device supporting unit and a lower antenna device supporting unit for fixing the upper antenna device and the lower antenna device, respectively, to the shielding unit, the upper and lower antenna device supporting units having the same size and shape and being positioned symmetrically such that the distance between the upper antenna device and the shielding unit is the same as the distance between the lower antenna device and the shielding unit.
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Specification