Search International and National Patent Collections
Some content of this application is unavailable at the moment.
If this situation persists, please contact us atFeedback&Contact
1. (EP0805506) ANTENNA

Office : European Patent Office
Application Number: 96937561 Application Date: 12.11.1996
Publication Number: 0805506 Publication Date: 05.11.1997
Publication Kind : A1
Designated States: DE, FI, FR, GB
Prior PCT appl.: Application Number:JP1996003315 ; Publication Number: Click to see the data
IPC:
H 01Q
H 01Q
H01Q 1/10
H01Q 1/24
H01Q 1/27
H01Q 1/36
H01Q 9/32
H01Q 11/08
H ELECTRICITY
01
BASIC ELECTRIC ELEMENTS
Q
AERIALS
21
Aerial arrays or systems
30
Combinations of separate aerial units operating in different wavebands and connected to a common feeder system
H ELECTRICITY
01
BASIC ELECTRIC ELEMENTS
Q
AERIALS
1
Details of, or arrangements associated with, aerials
12
Supports; Mounting means
22
by structural association with other equipment or articles
24
with receiving set
H ELECTRICITY
01
BASIC ELECTRIC ELEMENTS
Q
AERIALS
1
Details of, or arrangements associated with, aerials
08
Means for collapsing aerials or parts thereof
10
Telescopic elements
H ELECTRICITY
01
BASIC ELECTRIC ELEMENTS
Q
AERIALS
1
Details of, or arrangements associated with, aerials
12
Supports; Mounting means
22
by structural association with other equipment or articles
24
with receiving set
H ELECTRICITY
01
BASIC ELECTRIC ELEMENTS
Q
AERIALS
1
Details of, or arrangements associated with, aerials
27
Adaptation for use in or on movable bodies
H ELECTRICITY
01
BASIC ELECTRIC ELEMENTS
Q
AERIALS
1
Details of, or arrangements associated with, aerials
36
Structural form of radiating elements, e.g. cone, spiral, umbrella
H ELECTRICITY
01
BASIC ELECTRIC ELEMENTS
Q
AERIALS
9
Electrically-short aerials having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
04
Resonant aerials
30
with feed to end of elongated active element, e.g. unipole
32
Vertical arrangement of element
H ELECTRICITY
01
BASIC ELECTRIC ELEMENTS
Q
AERIALS
11
Electrically-long aerials having dimensions more than twice the shortest operating wavelength and consisting of conductive active radiating elements
02
Non-resonant aerials, e.g. travelling-wave aerial
08
Helical aerials
CPC:
H01Q 1/244
Applicants: NIPPON ANTENA KABUSHIKI KAISYA
Inventors: MAKINO MITSUYA
Priority Data: 32624995 22.11.1995 JP
9603315 12.11.1996 JP
Title: (DE) ANTENNE
(EN) ANTENNA
(FR) ANTENNE
Abstract: front page image
(EN) When the antenna element of an antenna is expanded, a helical element (4) acts as a parasitic element, and a high-frequency current flows through an element conductor (3), causing the element (4) to act as a parasitic element which is excited in a high frequency wave way. When the antenna element is housed, electrical energy is fed to the upper end of the element (4) from the upper end of an upper conductor section (6), and the overlapping parts of the element (4) and section (6) form an L-C parallel resonance circuit. Therefore, the antenna makes two-resonance operation.
Also published as:
CN1172555KR1019980701595WO/1997/019488