EP 0209220 B1 19930915 - DUAL END RESONANT SLOT ARRAY ANTENNA FEED
Title (en)
DUAL END RESONANT SLOT ARRAY ANTENNA FEED
Publication
Application
Priority
US 73600985 A 19850520
Abstract (en)
[origin: EP0209220A1] An antenna with a dual end resonant slot array feed improves the bandwidth performance of a resonant slotted waveguide planar array antenna. The dual end resonant slot array feed includes a tee junction (28) which may be either an E-plane or H-plane, two waveguide sections (32, 34), and two E-plane waveguide bends (36, 38). The two waveguide sections (32, 34) are formed by a septum (40) mounted in a slotted waveguide (42) for separating the input tee junction (28), from the slots (44) of the slotted waveguide. The ends of the septum (40) coacting with the ends of the waveguide to form the E-plane waveguide bends (36, 38). Thus, resonant feeding of the series-slot waveguides (50) is achieved by the opposing traveling waves thereby eliminating the need to use resonant short circuits, cavities, or folded short circuits. Further direct coupling to the series slots (44) directly adjacent to the E- or H-plane feed point (50) is avoided by introducing the septum (40) between the feed point (50) and the row of slots (44).
IPC 1-7
IPC 8 full level
H01P 5/16 (2006.01); H01Q 13/10 (2006.01); H01Q 21/00 (2006.01); H01Q 21/08 (2006.01)
CPC (source: EP)
H01Q 21/0043 (2013.01)
Citation (examination)
GB 813934 A 19590527 - MARCONI WIRELESS TELEGRAPH CO
Designated contracting state (EPC)
DE FR GB IT NL
DOCDB simple family (publication)
EP 0209220 A1 19870121; EP 0209220 B1 19930915; DE 3689015 D1 19931021; DE 3689015 T2 19940217; JP 2612849 B2 19970521; JP S6230409 A 19870209
DOCDB simple family (application)
EP 86303580 A 19860512; DE 3689015 T 19860512; JP 11447386 A 19860519