Dual band antenna for radio terminal
First Claim
1. A dual band antenna for a radio terminal comprising:
- a helical antenna including first and second helical portions, having first and second constant pitches, respectively, the first and second helical portions being independently operable at different frequency bands;
a whip antenna including a conductive core line, a conductive substance covering a first portion of the conductive core line to serve as a choke and an isolation element extending from an upper end of the conductive core line, for filling a gap between the conductive core line and the conductive substance, wherein only the first portion of the conductive core line is operable at a first frequency band and the entire conductive core line is operable at a second frequency band; and
a fixing element for fixing the helical antenna and the whip antenna to a radio terminal, said fixing element having an upper end connected to a lower end of said helical antenna, said conductive substance extending from said lower end of said helical antenna to a point beyond said helical antenna when said whip antenna is in an extended position.
1 Assignment
0 Petitions
Accused Products
Abstract
A dual band antenna for a radio terminal consists of a retractable whip antenna and a helical antenna with irregular pitches, wherein the whip antenna is independent of the helical antenna. The helical antenna includes first and second helical portions having first and second pitches, respectively and the first and second helical portions are operable at different frequency bands independently. The whip antenna includes a conductive core line, a conductive substance covering a first portion of the conductive core line to serve as a choke and an isolation element extending from an upper end of the conductive core line, for filling a gap between the conductive core line and the conductive substance. Here, only the first portion of the conductive core line is operable at a first frequency band and the entire conductive core line is operable at a second frequency. A fixing element fixes the helical antenna and the whip antenna to the radio terminal. The fixing element has an upper end connected to a lower end of the helical antenna and a through hold via which the whip antenna is inserted into an interior of the radio terminal.
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Citations
29 Claims
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1. A dual band antenna for a radio terminal comprising:
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a helical antenna including first and second helical portions, having first and second constant pitches, respectively, the first and second helical portions being independently operable at different frequency bands;
a whip antenna including a conductive core line, a conductive substance covering a first portion of the conductive core line to serve as a choke and an isolation element extending from an upper end of the conductive core line, for filling a gap between the conductive core line and the conductive substance, wherein only the first portion of the conductive core line is operable at a first frequency band and the entire conductive core line is operable at a second frequency band; and
a fixing element for fixing the helical antenna and the whip antenna to a radio terminal, said fixing element having an upper end connected to a lower end of said helical antenna, said conductive substance extending from said lower end of said helical antenna to a point beyond said helical antenna when said whip antenna is in an extended position. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A dual band antenna including a helical antenna for a radio terminal, comprising:
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a whip antenna including a conductive core line, a conductive substance covering a first portion of the conductive core line to serve as a choke and an isolation element extending from an upper end of the conductive core line, for filling a gap between the conductive core line and the conductive substance, wherein only the first portion of the conductive core line is operable at a first frequency band and the entire conductive core line is operable at a second frequency band; and
a fixing element for fixing the helical antenna and the whip antenna to the radio terminal, the fixing element having an upper end connected to a lower end of the helical antenna, said conductive substance extending from said lower end of the helical antenna to a point beyond the helical antenna when said whip antenna is in an extended position. - View Dependent Claims (11, 12, 13, 14)
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15. A dual band antenna for a radio terminal, comprising:
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a helical antenna including first and second helical portions having first and second constant pitches, respectively, the first and second helical portions being independently operable at different frequency bands;
a whip antenna including a conductive core line, a conductive substance covering a first portion of the conductive core line to serve as a choke and an isolation element extending from an upper end of the conductive core line, for filling a gap between the conductive core line and the conductive substance; and
a fixing element for fixing the helical antenna and the whip antenna to the radio terminal, said fixing element having an upper end connected to a lower end of said helical antenna, said conductive substance extending from said lower end of said helical antenna to a point beyond the helical antenna when said whip antenna is in an extended position. - View Dependent Claims (16, 17, 18, 19, 20, 21)
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22. A dual band antenna for a radio terminal, comprising:
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a helical antenna including first and second helical portions having first and second constant pitches, respectively, the first and second helical portions being operable at different frequency bands;
a whip antenna including a conductive core line, a conductive substance covering a first portion of the conductive core line and an isolation element extending from an upper end of the conductive core line, wherein the whip antenna is operable at the two different frequency bands using a periodic resonant frequency thereof; and
a fixing element for fixing the helical antenna and the whip antenna to the radio terminal, wherein the fixing element has an upper end connected to a lower end of the helical antenna and a through hole via which the whip antenna is inserted into an interior of the radio terminal, said conductive substance extending from said lower end of said helical antenna to a point beyond the helical antenna when said whip antenna is in an extended position. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29)
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Specification