Patent US3743933A successfully refreshed from Google Patents.
US3743933A
Expired / Lapsed
US
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Wave guide
Assignee: Societe de Fabrication dInstruments de Mesure SFIM SA
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Filing: 1971-09-09
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Granted: 1973-07-03
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Expires: 1991-09-09
Abstract
Abstract An arrangement including a main wave guide flanked by two auxiliary wave guides, all being arranged parallel to one another. Each lateral wall of the main wave guide is formed with a slot, the slots providing openings between the main wave guide and the auxiliary wave guide. The length of each slot is equal to the wave length in air of the wave which is propagated in the main wave guide. One end of one auxiliary wave guide absorbs an incident wave traveling in one direction, and one end of the other auxiliary wave guide reflects an incident wave traveling in the same direction. At its other end, each auxiliary wave guide may have a crystal for receiving energy flowing in the opposite direction toward that other end. The wave guide arrangement may form part of a detection means including a source of microwaves for providing signals traveling along the main wave guide in said one direction, an aerial for transmitting and also for providing signals traveling along the wave guide in the opposite direction, an amplifier chain connected to each of the crystals, and a phase comparator connected to the amplifier chains.
Inventors
- 👤 J Preti
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 07:00
CPC Classifications
G; G01; G01S; G01S13/00; G01S13/88; G01S13/91; G01S13/92; D; D03; D03C; D03C3/00; D03C3/24; H; H03; H03D; H03D9/00; H03D9/06; H03D9/0608; H03D9/0616
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
152 words
A wave guide arrangement comprising a main wave guide having two opposed lateral walls and having an axis, two auxiliary wave guides each having an axis, said auxiliary wave guides flanking said walls respectively, the axes of said auxiliary wave guides being parallel to the axis of the main wave guide, a slot in each of said walls, said slots being opposite one another and providing openings between said main wave guide and said auxiliary wave guides, the length of each slot being equal to the wave length in air of the wave which is propagated in said main wave guide, one of said auxiliary wave guides having an end which absorbs an incident wave traveling in one direction, the other auxiliary wave guide having an end which reflects an incident wave traveling in said one direction, the other ends of both auxiliary wave guides each being provided with energy detector means.
Claim 2
Dependent Claim
152 words
A wave guide arrangement comprising a main wave guide having two opposed lateral walls and having an axis, two auxiliary wave guides each having an axis, said auxiliary wave guides flanking said walls respectively, the axes of said auxiliary wave guides being parallel to the axis of the main wave guide, a slot in each of said walls, said slots being opposite one another and providing openings between said main wave guide and said auxiliary wave guides, the length of each slot being equal to the wave length in air of the wave which is propagated in said main wave guide, one of said auxiliary wave guides having an end which absorbs an incident wave traveling in one direction, the other auxiliary wave guide having an end which reflects an incident wave traveling in said one direction, the other ends of both auxiliary wave guides each being provided with energy detector means.
Claim 3
Dependent Claim
16 words
A wave guide arrangement as defined in claim 1 wherein said energy detector means are crystals.
Claim 4
Dependent Claim
227 words
Detection means comprising a main wave guide having two opposed lateral walls and having an axis, two auxiliary wave guides each having an axis, said auxiliary wave guides flanking said walls respectively, the axes of said auxiliary wave guides being parallel to the axis of the main wave guide, a slot in each of said walls, said slots being opposite one another and providing openings between said main wave guide and said auxiliary wave guides, the length of each slot being equal to the wave length in air of the wave which is propagated in said main wave guide, one of said auxiliary wave guides having an end which absorbs an incident wave traveling in one direction, the other auxiliary wave guide having an end which reflects an incident wave traveling in said one direction, the other ends of both auxiliary wave guides each being provided with detector crystals, a source of continuous microwaves connected to that end of the main wave guide which is the same relative end as the said ends of the auxiliary wave guides which are provided with crystals, a transmission and reception aerial connected to the other end of the main wave guide, an amplifier chain connected to one of the crystals, another amplifier chain connected to the other of the crystals, and a phase comparator connected to the two amplifier chains.
Claim 5
Dependent Claim
227 words
Detection means comprising a main wave guide having two opposed lateral walls and having an axis, two auxiliary wave guides each having an axis, said auxiliary wave guides flanking said walls respectively, the axes of said auxiliary wave guides being parallel to the axis of the main wave guide, a slot in each of said walls, said slots being opposite one another and providing openings between said main wave guide and said auxiliary wave guides, the length of each slot being equal to the wave length in air of the wave which is propagated in said main wave guide, one of said auxiliary wave guides having an end which absorbs an incident wave traveling in one direction, the other auxiliary wave guide having an end which reflects an incident wave traveling in said one direction, the other ends of both auxiliary wave guides each being provided with detector crystals, a source of continuous microwaves connected to that end of the main wave guide which is the same relative end as the said ends of the auxiliary wave guides which are provided with crystals, a transmission and reception aerial connected to the other end of the main wave guide, an amplifier chain connected to one of the crystals, another amplifier chain connected to the other of the crystals, and a phase comparator connected to the two amplifier chains.
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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) | 1976-07-02 | 1977-01-01 | 1977-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-02 | 1981-01-01 | 1981-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-02 | 1985-01-01 | 1985-07-03 | $7700.00 | Window Closed / Lapsed |