EP 0108693 A1 19840516 - High-power rotating joint for a double-waveband antenna.
Title (en)
High-power rotating joint for a double-waveband antenna.
Title (de)
Hochleistungsdrehbare Verbindung für eine Doppelband-Antenne.
Title (fr)
Joint tournant de puissance pour antenne double-bande.
Publication
Application
Priority
FR 8218803 A 19821109
Abstract (en)
1. Power rotary coupling for a two-band antenna for establishing a connection between the fixed and movable antenna parts for transmitting electromagnetic waves belonging to two bands with different frequencies (X, W) comprising a cylindrical super-high frequency waveguide (1) having a fixed part (2) and a movable part (3), characterized in that it is able to transmit a composite wave beam constituted by a first wave beam whose frequency belongs to the first band (X) and second wave beam whose frequency belongs to the second band (W) and is at least four times higher than the first frequency, the transmission being such that the waves of the first band (X) are guided and the waves of the second band (W) are propagated as in free space, that the cylindrical waveguide (1) comprises at the end of its fixed part a first input comprising a first spatial frequency filter (6), at the periphery of said end a second input being disposed provided with a first rectangular waveguide (4), that the spatial frequency filter has the ability to allow to pass the waves of the second frequency band (W) transmitted by a first source (S1) and to reflect the waves of the other band (X) which arrive at the input (4) and are transmitted by a second source (S2), that the cylindrical waveguide (1) comprises at the end of its movable part a first output having a second spatial frequency filter (7) and at the periphery of said end a second output is provided comprising a second rectangular waveguide (5) and that the spatial frequency filter is able to allow to pass the waves of the second band (W) and reflect the waves of the other band (X), the two wave beams being available at the output during the entire rotation of the coupling.
Abstract (fr)
L'invention concerne un joint tournant de puissance destiné à équiper une antenne fonctionnant simultanément sur deux bandes de fréquences différentes (C-KA ou KA-X ou X-W). Le joint comporte un guide hyperfréquence cylindrique (1) dont chaque extrémité est fermée par un filtre spatial de fréquence (8, 9) transparent aux ondes électromagnétiques de l'une des bandes de fréquence (KA ou X ou W), les ondes de l'autre bande de fréquence (C ou KA ou X) étant guidées par deux guides rectangulaires (4, 5) chacun étant relié à l'une des extrémités du joint. Application aux radars de poursuite.
IPC 1-7
IPC 8 full level
H01P 1/06 (2006.01); H01Q 5/00 (2006.01); H01Q 5/45 (2015.01)
CPC (source: EP)
H01P 1/067 (2013.01); H01Q 5/45 (2015.01)
Citation (search report)
- US 2523348 A 19500926 - WHITE ALBERT S, et al
- FR 2429505 A1 19800118 - THOMSON CSF [FR]
- US 2835871 A 19580520 - RAABE HERBERT P
- FR 2281660 A1 19760305 - THOMSON CSF [FR]
- AP-S INTERNATIONAL SYMPOSIUM 1977, Session 19, 22 juin 1977, San Francisco, IEEE, New York (US)
Designated contracting state (EPC)
DE GB IT NL
DOCDB simple family (publication)
EP 0108693 A1 19840516; EP 0108693 B1 19880127; DE 3375543 D1 19880303; FR 2535904 A1 19840511; FR 2535904 B1 19850802
DOCDB simple family (application)
EP 83402150 A 19831104; DE 3375543 T 19831104; FR 8218803 A 19821109