US4333076A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ultra-high frequency simultaneous transmission and reception head, millimeter wave transmitter - receiver and radar using such a head
Assignee: Thales SA
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Filing: 1980-06-09
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Granted: 1982-06-01
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Expires: 2000-06-09
Abstract
Abstract A millimeter wave transmitting and receiving head having an excellent technical quality, which is inexpensive to produce and has minimum overall dimensions. The head has for example a guide with a square cross-section connected by a duplexer provided with fins to two guides having rectangular cross-sections and with crossed polarizations. One of the rectangular guides is semicircular so that it can receive through an opening an orifice of the other rectangular guide. A symmetrical mixer having two diodes receives the signal from the two guides and has two outputs. A Gunn diode-type or avalanche-type oscillator serves as the transmitter and the local signal generator. The head is completed by a receiving amplifier and an antenna for constituting a transmitter-receiver. A radar can be obtained by addition of a quarter-wave plate level with antenna.
Inventors
- 👤 Gerard Cachier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:39
CPC Classifications
H; H03; H03D; H03D9/00; H03D9/06; H03D9/0608; H03D9/0616; G; G01; G01S; G01S13/00; G01S13/02; G01S13/50; G01S7/00; G01S7/02
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
151 words
An ultra-high frequency head comprising: a microwave oscillator which can be used both as a transmission source and as a local oscillator; a polarization duplexer having a first, a second and a third port, said first port opening onto a two-way square cross-section guide destined to be connected with transmitting and/or receiving antenna, said second port opening onto a first rectangular cross-section guide coupled with said microwave oscillator and having a straight longitudinal shape, and said third port opening onto a second rectangular cross-section guide having a shape bent in such a manner that it intersects with said first rectangular guide, the rectangular cross-section of both rectangular guides being arranged so as to have the electrical components of the electrical fields to be orthogonal in first and second retangular guides; a mixer situated in said second rectangular guide in the vicinity of the intersection of said first and second rectangular guides.
Claim 2
Dependent Claim
151 words
An ultra-high frequency head comprising: a microwave oscillator which can be used both as a transmission source and as a local oscillator; a polarization duplexer having a first, a second and a third port, said first port opening onto a two-way square cross-section guide destined to be connected with transmitting and/or receiving antenna, said second port opening onto a first rectangular cross-section guide coupled with said microwave oscillator and having a straight longitudinal shape, and said third port opening onto a second rectangular cross-section guide having a shape bent in such a manner that it intersects with said first rectangular guide, the rectangular cross-section of both rectangular guides being arranged so as to have the electrical components of the electrical fields to be orthogonal in first and second retangular guides; a mixer situated in said second rectangular guide in the vicinity of the intersection of said first and second rectangular guides.
Claim 3
Dependent Claim
147 words
An ultra-high frequency head comprising: a microwave oscillator which can be used both as a transmission source and as a local oscillator; a polarization duplexer having a first, a second and a third port, said first port opening onto a two-way square cross-section guide destined to be connected with transmitting and/or receiving antenna, said second port opening onto a first rectangular cross-section guide coupled with said microwave oscillator and having a bent longitudinal shape, and said third port opening onto a second rectangular cross-section guide having a straight longitudinal shape and intersecting with said first rectangular guide, the rectangular cross-section of both rectangular guides being arranged so as to have the electrical components of the electrical fields to be orthogonal in first and second rectangular guides; a mixer situated in said second rectangular guide in the vicinity of the intersection of said first and second rectangular guides.
Claim 4
Dependent Claim
147 words
An ultra-high frequency head comprising: a microwave oscillator which can be used both as a transmission source and as a local oscillator; a polarization duplexer having a first, a second and a third port, said first port opening onto a two-way square cross-section guide destined to be connected with transmitting and/or receiving antenna, said second port opening onto a first rectangular cross-section guide coupled with said microwave oscillator and having a bent longitudinal shape, and said third port opening onto a second rectangular cross-section guide having a straight longitudinal shape and intersecting with said first rectangular guide, the rectangular cross-section of both rectangular guides being arranged so as to have the electrical components of the electrical fields to be orthogonal in first and second rectangular guides; a mixer situated in said second rectangular guide in the vicinity of the intersection of said first and second rectangular guides.
Claim 5
Dependent Claim
30 words
A head accordinfg to claim 1 or 2, wherein the mixer has two diodes enclosed in two modules arranged in such a way that their metal coatings face one another.
Claim 6
Dependent Claim
68 words
A head according to claim 1 or 2, wherein the oscillator is constituted by a negative resistance module having a conductive support, a semiconductor diode in contact with said support by one of its electrodes, a layer of dielectric material placed on the support and surrounding the diode and a metal coating deposited on the layer and which is in contact with the other electrode of the diode.
Claim 7
Dependent Claim
30 words
A head according to claim 1 or 2, wherein the oscillator, duplexer and mixer, as well as the wave guides connected to the duplexer are incorporated in the same block.
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) | 1985-05-31 | 1985-11-30 | 1986-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-05-31 | 1989-11-30 | 1990-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-05-31 | 1993-11-30 | 1994-06-01 | $7700.00 | Window Closed / Lapsed |