US3604012A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Binary phase-scanning antenna with diode controlled slot radiators
Assignee: Singer Co
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Filing: 1968-08-19
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Granted: 1971-09-07
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Expires: 1988-08-19
Abstract
Abstract The present invention relates to an antenna having a plurality of radiators energized to produce radiation in at least two adjacent quadrants and having control means for selectively reversing the phase of radiation of individual radiators to thereby provide direction radiation from the array and to scan such radiation.
Inventors
- 👤 Dale C Lindley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 00:00
CPC Classifications
H; H01; H01Q; H01Q3/00; H01Q3/26; H01Q3/30; H01Q3/34; H01Q3/36; H01Q3/38
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
142 words
An improved antenna comprising a large plurality of radiating elements aligned in strips, each strip comprising a waveguide having pairs of slots therein with the slots of each pair being diametrically disposed on opposite sides of the center of the waveguide and diodes connected across each slot, means energizing said elements to radiate energy in at least two adjacent phase quadrants with the phase of elements of any group of adjacent elements substantially different and establishing a nonperiodic phase distribution across the array, and switching means selectively reversing biasing of diodes of each pair of slots for selectively reversing the phase of energy radiated by each radiated element to thereby establish a predetermined radiation beam pattern and further successively reversing the phase of predetermined elements in predetermined order to change the direction or pattern of a radiated beam in a preselected manner.
Claim 2
Dependent Claim
142 words
An improved antenna comprising a large plurality of radiating elements aligned in strips, each strip comprising a waveguide having pairs of slots therein with the slots of each pair being diametrically disposed on opposite sides of the center of the waveguide and diodes connected across each slot, means energizing said elements to radiate energy in at least two adjacent phase quadrants with the phase of elements of any group of adjacent elements substantially different and establishing a nonperiodic phase distribution across the array, and switching means selectively reversing biasing of diodes of each pair of slots for selectively reversing the phase of energy radiated by each radiated element to thereby establish a predetermined radiation beam pattern and further successively reversing the phase of predetermined elements in predetermined order to change the direction or pattern of a radiated beam in a preselected manner.
Claim 3
Dependent Claim
25 words
The antenna of claim 1 further defined by said diodes being disposed across ends of said slots for selectively detuning said slots from said waveguide.
Claim 4
Dependent Claim
113 words
In an antenna structure having at least one waveguide with coupling slots in the wall thereof for coupling waveguide energy to the atmosphere, the improvement comprising each waveguide having pairs of slots spaced along the length thereof with the slots of each pair disposed equidistant on opposite sides of the center of the waveguide, diodes connected one across the end of each waveguide slot with the diodes of each pair of slots being connected in parallel opposed arrangement and being controllably biased by opposite polarity voltage causing either one only of each pair of diodes to conduct for selectively reversing the phase of energy coupled to the atmosphere from each pair of slots.
Claim 5
Dependent Claim
113 words
In an antenna structure having at least one waveguide with coupling slots in the wall thereof for coupling waveguide energy to the atmosphere, the improvement comprising each waveguide having pairs of slots spaced along the length thereof with the slots of each pair disposed equidistant on opposite sides of the center of the waveguide, diodes connected one across the end of each waveguide slot with the diodes of each pair of slots being connected in parallel opposed arrangement and being controllably biased by opposite polarity voltage causing either one only of each pair of diodes to conduct for selectively reversing the phase of energy coupled to the atmosphere from each pair of slots.
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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) | 1974-09-06 | 1975-03-08 | 1975-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-06 | 1979-03-08 | 1979-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-06 | 1983-03-08 | 1983-09-07 | $7700.00 | Window Closed / Lapsed |