Title:
WAVEGUIDE WITH NON-TILTED RADIATION SLOT
Document Type and Number:
Japanese Patent JPH03173205
Kind Code:
A
Abstract:
PURPOSE: To obtain a waveguide having non-inclined radiation slots by providing slots of about half of operating wavelengths on a narrow wall perpendicularly to a waveguide axis and using flat radiation conductive patches near the slots on the narrow wall. CONSTITUTION: Radiation slots 2 and 3 orthogonally cross to the axis of a waveguide 1. Patches 5 and 7 are provided on a dielectric plate 4 fixed to a narrow wall and are associated with transmission lines 6 and 8 crossing the slots 6 and 8 respectively. These sets are arranged at λg /2 pitch, when the operation wavelength of the waveguide 1 is λg . The patches 5 and 7 combine electromagnetic energy that propagates through the waveguide 1 to an antenna. The patches do not face the slots, and leads 6 and 8 extend only λg /4 from their related slot. When the slots are alternately excited, energy can be taken out alternately with a πphase difference from both sides of a corresponding patch. The combined value of a waveguide propagation wave and a patch is decided by the measurements of the patch or the connecting point of the patch and a lead.
Inventors:
DANIERU KAETSU
JIYAN RU FUORU
JIYOSEFU ROJIE
JIYAN RU FUORU
JIYOSEFU ROJIE
Application Number:
JP30229490A
Publication Date:
July 26, 1991
Filing Date:
November 07, 1990
Export Citation:
Assignee:
THOMSON CSF
International Classes:
H01Q21/08; H01Q13/10; H01Q13/18; H01Q13/22; H01Q21/00; (IPC1-7): H01P5/107; H01Q13/18; H01Q13/22; H01Q21/08
Attorney, Agent or Firm:
Kazuo Sato (3 others)