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US3713166A
Expired / Lapsed
US
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Flush mounted antenna and receiver tank circuit assembly
Assignee: BAE Systems Space & Mission Systems Inc
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Filing: 1970-12-18
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Granted: 1973-01-23
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Expires: 1990-12-18
Abstract
Abstract An assembly for transmitting and receiving communication signals is disclosed and generally includes a first or inner cylindrical conductor, the length of which is substantially equal to one-half wavelength at a predetermined operating frequency and a second concentrically positioned outer cylindrical conductor, the length of which is substantially equal to one-half that of the inner conductor. The conductors are electrically connected at adjacent transverse edges so as to define a one-quarter wavelength openended coaxial cavity. A coaxial line, connected to the conductors at the opening of the cavity, is provided for joining the device to a transmitter or receiver. The device, constructed in this manner, electrically becomes a half-wave dipole antenna operating at the aforementioned predetermined frequency. In addition, the assembly may include a third cylindrical conductor which is also positioned concentrically about the first conductor and which operates at a second predetermined frequency as a second halfwave dipole antenna.
Inventors
- 👤 R Munson
- 👤 J Krutsinger
- 👤 J Polson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 08:41
CPC Classifications
H; H01; H01Q; H01Q1/00; H01Q1/27; H01Q1/28; H01Q1/286
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
179 words
An assembly for transmitting and receiving communication signals of differing frequencies, said assembly comprising: a common conductor of predetermined length; a first conductor substantially shorter in length than said common conductor and spaced from a first portion of said common conductor; first conductive means connecting said common conductor with said first conductor; a second conductor substantially shorter in length than said common conductor and spaced from a second portion of said common conductor, said first And second portions of said common conductor being spaced with respect to one another; second conductive means connecting said common conductor with said second conductor; and first and second electrical signal transfer means one of which is connected to said first conductor and said common conductor and the second of which is connected to said second conductor and said common conductor, whereby said first conductor and said common conductor are adapted to transmit and receive communication signals at a first predetermined frequency and whereby said second conductor and said common conductor are adapted to transmit and receive communication signals at a second predetermined frequency.
Claim 2
Dependent Claim
179 words
An assembly for transmitting and receiving communication signals of differing frequencies, said assembly comprising: a common conductor of predetermined length; a first conductor substantially shorter in length than said common conductor and spaced from a first portion of said common conductor; first conductive means connecting said common conductor with said first conductor; a second conductor substantially shorter in length than said common conductor and spaced from a second portion of said common conductor, said first And second portions of said common conductor being spaced with respect to one another; second conductive means connecting said common conductor with said second conductor; and first and second electrical signal transfer means one of which is connected to said first conductor and said common conductor and the second of which is connected to said second conductor and said common conductor, whereby said first conductor and said common conductor are adapted to transmit and receive communication signals at a first predetermined frequency and whereby said second conductor and said common conductor are adapted to transmit and receive communication signals at a second predetermined frequency.
Claim 3
Dependent Claim
50 words
An assembly according to claim 1, including choke means between and spaced with respect to said first and second conductors for electrically isolating said second conductor and common conductor from said first conductor and common conductor, whereby said second and common conductors operate independent of said first and common conductors.
Claim 4
Dependent Claim
44 words
An assembly according to claim 2 wherein said choke means includes a third conductor spaced from a third portion of said common conductor between said first and second portions of said common conductor, and conductive means connecting said common conductor with said third conductor.
Claim 5
Dependent Claim
166 words
An assembly according to claim 1, including first connecting means for connecting said first conductor with said first portion of said common conductor, second connecting means for connecting said second conductor with said second portion of said common conductor, and wherein said electrical signal transfer means comprises a first coaxial line having an inner cable connected to said first conductor at a point spaced from said first connecting means approximately one-quarter wavelength at said first predetermined frequency and an outer cable connected to said common conductor at a point spaced from said first connecting means approximately one-quarter wavelength at said first predetermined frequency, said electrical signal transfer means further including a second coaxial line having an inner cable connected to said second conductor at a point spaced from said second connecting means approximately one-quarter wavelength at said second predetermined frequency and an outer cable connected to said common conductor at a point spaced from said second connecting means approximately one-quarter wavelength at said second predetermined frequency.
Claim 6
Dependent Claim
50 words
An assembly according to claim 3 wherein said common conductor is in the form of an elongated cylinder and wherein said first, second and third conductors are in the form of cylinders axially spaced with respect to one another and positioned concentrically around the exterior surface of said common conductor.
Claim 7
Dependent Claim
68 words
An assembly according to claim 1 wherein said electrical signal transfer means includes a first coaxial line, the inner conductor of which is connected to said first conductor and an outer conductor of which is connected to said common conductor; and a second coaxial line, the inner conductor of which is connected to said second conductor and the outer conductor of which is connected to said common conductor.
Claim 8
Dependent Claim
91 words
An assembly for transmitting and receiving communication signals of differing frequencies, said assembly comprising: an elongated cylindrical common conductor; a first cylindrical conductor connected with said common conductor so as to form a first coaxial cavity therewith; a second cylindrical conductor connected with said common conductor so as to form a second coaxial cavity therewith, said first and second coaxial cavities being of different lengths, and said second conductor being axially spaced from said first conductor; and electrical signal transfer means connected to said first conductor, second conductor and common conductor.
Claim 9
Dependent Claim
91 words
An assembly for transmitting and receiving communication signals of differing frequencies, said assembly comprising: an elongated cylindrical common conductor; a first cylindrical conductor connected with said common conductor so as to form a first coaxial cavity therewith; a second cylindrical conductor connected with said common conductor so as to form a second coaxial cavity therewith, said first and second coaxial cavities being of different lengths, and said second conductor being axially spaced from said first conductor; and electrical signal transfer means connected to said first conductor, second conductor and common conductor.
Claim 10
Dependent Claim
63 words
An assembly according to claim 7, including means for electrically isolating said coaxial cavities from each other, said isolating means including a third cylIndrical conductor adjacent to said elongated cylindrical common conductor and positioned between said first and second conductors with axial spacing therebetween, said third cylindrical conductor being connected with said common conductor so as to from a third coaxial cavity therewith.
Claim 11
Dependent Claim
149 words
An assembly for transmitting and receiving communication signals of differing frequencies, said assembly comprising: a cylindrical support of insulating material; a first cylindrical conductor of conductive material supported on one side of said insulating material; a second cylindrical conductor of conductive material substantially shorter in length than said first conductor and supported on the opposite side of said insulating support; first conductive means connecting said first and second conductors, said conductors and conductive means forming a first antenna operating at a first predetermined frequency; a third cylindrical conductor of conductive material substantially shorter in length than said first conductor and supported on said opposite side of the insulating support, said second and third cylindrical conductors being axially spaced with respect to one another; and second conductive means connecting said first and third conductors, said last-mentioned conductors and conductive means forming a second antenna operating at a second predetermined frequency.
Claim 12
Dependent Claim
149 words
An assembly for transmitting and receiving communication signals of differing frequencies, said assembly comprising: a cylindrical support of insulating material; a first cylindrical conductor of conductive material supported on one side of said insulating material; a second cylindrical conductor of conductive material substantially shorter in length than said first conductor and supported on the opposite side of said insulating support; first conductive means connecting said first and second conductors, said conductors and conductive means forming a first antenna operating at a first predetermined frequency; a third cylindrical conductor of conductive material substantially shorter in length than said first conductor and supported on said opposite side of the insulating support, said second and third cylindrical conductors being axially spaced with respect to one another; and second conductive means connecting said first and third conductors, said last-mentioned conductors and conductive means forming a second antenna operating at a second predetermined frequency.
Claim 13
Dependent Claim
181 words
An assembly for transmitting and receiving communication signals of differing frequencies, said assembly comprising: a support of insulating material; a first conductor of conductive material supported on one side of said insulating material; a second conductor of conductive material substantially shorter in length than said first conductor and supported on the opposite side of said insulating support; first conductive means connecting said first and second conductors, said conductors and conductive means forming a first antenna operating at a first predetermined frequency; a third conductor of conductive material substantially shorter in length than said first conductor and supported on said opposite side of the insulating support; second conductive means connecting said first and third conductors, said last-mentioned conductors and conductive means forming a second antenna operating at a second predetermined frequency; and means for electrically isolating said second antenna from said first antenna, said isolating means including a fourth conductor of conductive material supported on said opposite side of the insulating support and between said second and third conductors, and third conductive means for connecting said fourth conductor with said first conductor.
Claim 14
Dependent Claim
181 words
An assembly for transmitting and receiving communication signals of differing frequencies, said assembly comprising: a support of insulating material; a first conductor of conductive material supported on one side of said insulating material; a second conductor of conductive material substantially shorter in length than said first conductor and supported on the opposite side of said insulating support; first conductive means connecting said first and second conductors, said conductors and conductive means forming a first antenna operating at a first predetermined frequency; a third conductor of conductive material substantially shorter in length than said first conductor and supported on said opposite side of the insulating support; second conductive means connecting said first and third conductors, said last-mentioned conductors and conductive means forming a second antenna operating at a second predetermined frequency; and means for electrically isolating said second antenna from said first antenna, said isolating means including a fourth conductor of conductive material supported on said opposite side of the insulating support and between said second and third conductors, and third conductive means for connecting said fourth conductor with said first conductor.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-01-23 | 1976-07-24 | 1977-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-23 | 1980-07-24 | 1981-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-23 | 1984-07-24 | 1985-01-23 | $7700.00 | Window Closed / Lapsed |