Title:
ROTARY JOINT OF MICROWAVE TRANSMISSION AND RECEPTION PART
Document Type and Number:
Japanese Patent JP3708279
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To simplify a structure and to provide a light-weight small-sized rotary joint of microwave transmission/reception part by directly connecting a motor for rotating an antenna part to a dielectric connected to a rotator in a rotary mechanism.
SOLUTION: To a fixed waveguide 1, the thin and long dielectric 10 of an almost round bar shape is installed almost vertically to a magnetic field surface inside the tube of the fixed waveguide 1 from the rotator 4 so as to be passed through the fixed waveguide 1. One end of the dielectric 10 is connected to the antenna part. The other end of the dielectric 10 is connected to the motor 8 and the antenna part, the rotator 4 in the rotary mechanism 9 and a probe 2 are rotated. The rotary mechanism 9 is formed by the rotator 4, a bearing part 5, the motor 8 and a boss 12 for choke and the antenna part connected to the rotator 4 is rotated. Then, when microwaves are outputted, the microwaves are transmitted to the rotated antenna part and radiated in all directions. Thus, the fixed transmission/reception part of a pulse radar and the rotated antenna part are smoothly connected.
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Inventors:
Ikuro Kisanuki
Tomita Manabu
Tomita Manabu
Application Number:
JP9476597A
Publication Date:
October 19, 2005
Filing Date:
March 27, 1997
Export Citation:
Assignee:
New Japan Radio Co., Ltd.
International Classes:
H01P1/06; H01P5/02; (IPC1-7): H01P1/06; H01P5/02
Domestic Patent References:
| JP7111416A | ||||
| JP7312501A | ||||
| JP6303002A | ||||
| JP9008510A | ||||
| JP2108411U |