Title:
ANTENNA SYSTEM
Document Type and Number:
Japanese Patent JP2559001
Kind Code:
B2
Abstract:
PURPOSE: To facilitate also stack and reflector combination in response to a desired directivity and gain without need of complicated feeding and support structure even when the antenna system comprising the combination of dipole antennas is used for a high frequency band with shorter wavelengths such as quasi-microwave band.
CONSTITUTION: Dipole elements 12a, 12b and 15a, 15b formed as two stacks energized via microstrip lines 13, 16 and phase inverting circuits 14, 17 from a central feeding point 18 are formed on a front side by using a printed circuit board 11, an earth face 20 is formed on a rear side of the printed circuit board 11, a center conductor 19a of a coaxial plug 19 is connected to the feeding point 18 and an outer conductor 19b is connected to the earth face 20 respectively and a short stub 22 is formed by a line used to connect the feeding point 18 and the short pin 21 of the earth face 20.
Inventors:
OZAWA MASAHIKO
YAMAMOTO TAKUMI
FUJITA RIKUO
YAMAMOTO TAKUMI
FUJITA RIKUO
Application Number:
JP24815292A
Publication Date:
November 27, 1996
Filing Date:
September 17, 1992
Export Citation:
Assignee:
YAGI ANTENNA
International Classes:
H01Q1/38; H01Q1/50; H01Q9/16; H01Q9/28; H01Q11/14; H01Q13/08; (IPC1-7): H01Q13/08; H01Q1/38; H01Q9/16
Domestic Patent References:
| JP1173905A | ||||
| JP62122304A |
Attorney, Agent or Firm:
Takehiko Suzue