Patent US3852762A successfully refreshed from Google Patents.
US3852762A
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US
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Scanning lens antenna
Assignee: Singer Co
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Filing: 1973-11-14
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Granted: 1974-12-03
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Expires: 1993-11-14
Abstract
Abstract An improved microwave antenna for use in aircraft guidance in which respective azimuth and elevation antenna are fed through dielectric lenses by respective rotating scanners to result in scanned planar beams without physical antenna rotation. The respective scanners are mechanically coupled to thereby insure synchronization so that radiation is fed to only one antenna at a time.
Inventors
- 👤 G Henf
- 👤 L Schwartz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 05:34
CPC Classifications
H; H01; H01Q; H01Q15/00; H01Q15/24; H01Q15/242; H01Q15/246; H01Q19/00; H01Q19/10; H01Q19/12; H01Q3/00; H01Q3/12
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
133 words
A scanning lens microwave antenna comprising: a. a fixed circular reflector; b. a scanner comprising an annular shaped rectangular waveguide split in half with the inner half containing a fixed inlet port and forming a stator and the outer half containing a plurality of rotatable outlet ports and forming the rotor and means in said waveguide to cause only one output at a time to couple to said input; c. a parallel plate waveguide directing energy from said scanner to said reflector whereby said scanner will scan energy across said reflector; and d. a parallel plate dielectric lens located at the end of said parallel plate waveguide, said dielectric lens mounted within a thin metal outer casing which is coupled to said waveguide and having a tapered matching section extending into said waveguide.
Claim 2
Dependent Claim
133 words
A scanning lens microwave antenna comprising: a. a fixed circular reflector; b. a scanner comprising an annular shaped rectangular waveguide split in half with the inner half containing a fixed inlet port and forming a stator and the outer half containing a plurality of rotatable outlet ports and forming the rotor and means in said waveguide to cause only one output at a time to couple to said input; c. a parallel plate waveguide directing energy from said scanner to said reflector whereby said scanner will scan energy across said reflector; and d. a parallel plate dielectric lens located at the end of said parallel plate waveguide, said dielectric lens mounted within a thin metal outer casing which is coupled to said waveguide and having a tapered matching section extending into said waveguide.
Claim 3
Dependent Claim
62 words
The invention according to claim 1, wherein said means to couple one output at a time comprises a stationary director in the stator having a mitered H-plane extending partially across the input port and a plurality of rotating directors in said rotor one being provided for each output port and having a mitered H-plane bend extending partially across its associated output port.
Claim 4
Dependent Claim
16 words
a rotatable scanner including means to direct energy toward said curved reflector within said pillbox; and
Claim 5
Dependent Claim
16 words
a rotatable scanner including means to direct energy toward said curved reflector within said pillbox; and
Claim 6
Dependent Claim
13 words
a rotatable scanner including means to direct energy toward said double curved reflector;
Claim 7
Dependent Claim
13 words
a rotatable scanner including means to direct energy toward said double curved reflector;
Claim 8
Dependent Claim
9 words
a parallel plate wave guide enclosing said scanner; and
Claim 9
Dependent Claim
9 words
a parallel plate wave guide enclosing said scanner; and
Claim 10
Dependent Claim
70 words
a first parallel plate dielectric lens interposed between said directing means and said reflector to cause the reflected energy to be collimated as it leaves said curved surface; b. a second scanning lens antenna having its scanner mechanically coupled to the scanner of said first scanning lens antenna such that only one of said first and second lens antennae is able to radiate at one time, said scanning lens comprising:
Claim 11
Dependent Claim
70 words
a first parallel plate dielectric lens interposed between said directing means and said reflector to cause the reflected energy to be collimated as it leaves said curved surface; b. a second scanning lens antenna having its scanner mechanically coupled to the scanner of said first scanning lens antenna such that only one of said first and second lens antennae is able to radiate at one time, said scanning lens comprising:
Claim 12
Dependent Claim
19 words
The invention according to claim 2, wherein said stationary director is extended around the major portion of said stator.
Claim 13
Dependent Claim
26 words
The invention according to claim 2, wherein said parallel plate wave guide comprises a pillbox antenna with the end of said pillbox providing said curved reflector.
Claim 14
Dependent Claim
55 words
a second parallel plate dielectric lens interposed between said directing means and said reflector to cause the reflected energy to be collimated as it leaves said curved surface; c. means to supply microwave energy to said first and second lens antennae; and d. means to rotate the scanners of said first and second lens antennae.
Claim 15
Dependent Claim
55 words
a second parallel plate dielectric lens interposed between said directing means and said reflector to cause the reflected energy to be collimated as it leaves said curved surface; c. means to supply microwave energy to said first and second lens antennae; and d. means to rotate the scanners of said first and second lens antennae.
Claim 16
Dependent Claim
19 words
The invention according to claim 4 and further including a polarization rotator at the output of said pillbox antenna.
Claim 17
Dependent Claim
33 words
The invention according to claim 5, wherein said pillbox has additional parallel plate bends and terminates in an output horn which is perpendicular to the plane of the scanning lens within said pillbox.
Claim 18
Dependent Claim
50 words
The invention according to claim 5, wherein said polarization rotor comprises a plurality of printed circuits comprising a pattern in copper on thin fiber glass and a plurality of low density foam dielectric spacers of a thickness of one quarter wave length sandwiched between said plurality of printed circuit boards.
Claim 19
Dependent Claim
24 words
The invention according to claim 2, wherein said curved reflector is a doubly curved surface having a circular shape in the direction of scanning.
Claim 20
Dependent Claim
22 words
The invention according to claim 8, wherein said parallel plates contain bend of essentially 90* to direct energy to said curved reflector.
Claim 21
Dependent Claim
21 words
The invention according to claim 9, wherein said parallel plates have a circular feed aperture to produce a planar output scan.
Claim 22
Dependent Claim
20 words
The invention according to claim 9, wherein said parallel plates have a linear feed aperture to produce a conical scan.
Claim 23
Dependent Claim
18 words
A scanning lens antenna for providing alternate orthagonally scanned beams comprising: a. a first scanning lens antenna comprising:
Claim 24
Dependent Claim
18 words
A scanning lens antenna for providing alternate orthagonally scanned beams comprising: a. a first scanning lens antenna comprising:
Claim 25
Dependent Claim
83 words
The invention according to claim 12, wherein said means to supply microwave energy comprises: a. an RF source; b. a first three port ferite circulator having one port coupled to said source and a second opposite port coupled to a terminator; c. a second ferite circulator having one port coupled to the input of said first scanning lens antenna, a second opposite port coupled to said second scanning lens antenna and a third port coupled to the third port of said first circulator.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-12-02 | 1978-06-03 | 1978-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-02 | 1982-06-03 | 1982-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-02 | 1986-06-03 | 1986-12-03 | $7700.00 | Window Closed / Lapsed |