EP0884796A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Antenna device consisting of bent or curved portions of linear conductor
Assignee: Panasonic Holdings Corp
•
Filing: 1998-06-10
•
Granted: —
•
Expires: 2018-06-10
Abstract
Abstract An antenna device has at least one linear conductor each having one or more bent or curved portions for a feeder section.
Inventors
- 👤 Joji Kane
- 👤 Takasi Yosida
- 👤 Noboru Nomura
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 11:24
CPC Classifications
H; H01; H01Q; H01Q9/00; H01Q9/04; H01Q9/30; H01Q9/42; H01Q1/00; H01Q1/27; H01Q1/32; H01Q1/325; H01Q1/36; H01Q5/00; H01Q5/30; H01Q5/307; H01Q5/314; H01Q5/342; H01Q5/357; H01Q9/16; H01Q9/26; H01Q9/27
Claims Analysis
Total Claims: 88
Claim 1
Independent Claim
22 words
An antenna device, comprising: one or more linear
conductor each having at least one bent or curved portions
for a feeder section.
Claim 2
Dependent Claim
21 words
An antenna device as claimed in claim 1, wherein the
linear conductor has four or more even bent or curved
portions.
Claim 3
Dependent Claim
14 words
An antenna device, comprising: one or more spiral
linear conductor for the feeder section.
Claim 4
Dependent Claim
45 words
An antenna device as claimed in claim 1, 2 or 3,
wherein there are two linear conductors for said feeder
section, and the directions of bending, curving of the
two linear conductors or spirally winding are identical
with each other viewed from said feeder section.
Claim 5
Dependent Claim
45 words
An antenna device as claimed in claim 1, 2 or 3,
wherein there are two linear conductors for said feeder
section, and the directions of bending, curving of the
two linear conductors or spirally winding are different
from each other viewed from said feeder section.
Claim 6
Dependent Claim
51 words
An antenna device as claimed in claim 1, wherein a
length of from the feeder section to a first bent point
or a curved point is relatively longer or shorter than
a length of from said first bent point or curved point
to a second bent point or a curved point.
Claim 7
Dependent Claim
29 words
An antenna device which is disposed in the vicinity
of a conductive base plate so that an earth terminal of
the antenna is connected to said conductive base plate.
Claim 8
Dependent Claim
32 words
An antenna device which is disposed in the vicinity
of a conductive base plate, wherein a switching element
is disposed between an earth terminal of the antenna and
the conductive base plate.
Claim 9
Dependent Claim
39 words
An antenna device as claimed in claim 7 or 8, wherein
a feeding terminal of the antenna penetrates said
conductive base plate so that electricity is fed from a
side opposite to a side where said antenna is located.
Claim 10
Dependent Claim
39 words
An antenna device as claimed in claim 8, wherein
connection switching control between the earth terminal
of said antenna and said conductive base plate is conducted
by using a switching element to obtain a desired
directivity or polarization surface.
Claim 11
Dependent Claim
26 words
An antenna device as claimed in claim 8, wherein a
polarization surface that obtains a maximum efficiency
becomes horizontal polarization by turning on the
switching element.
Claim 12
Dependent Claim
26 words
An antenna device as claimed in claim 8, wherein a
polarization surface that obtains a maximum efficiency
becomes vertical polarization by turning off the
switching element.
Claim 13
Dependent Claim
25 words
An antenna device as claimed in any one of claims 8
to 12, wherein the connection switching of the switching
element can be remotely controlled.
Claim 14
Dependent Claim
37 words
An antenna device as claimed in any one of claims 7
to 9, wherein the characteristic of the antenna is
controlled to a desired characteristic by changing a
distance between said antenna and said conductive base
plate.
Claim 15
Dependent Claim
39 words
An antenna device as claimed in any one of claims 7
to 9, wherein the characteristic of the antenna is
controlled to a desired characteristic by changing an
angle between said antenna plane and said conductive base
plate plane.
Claim 16
Dependent Claim
35 words
An antenna device as claimed in any one of claims 7
to 15, wherein a spacer is inserted between the antenna
and said conductive base plate, and the spacer is made
of a low-dielectric material.
Claim 17
Dependent Claim
44 words
An antenna device as claimed in any one of claims 7
to 16, wherein the conductive base plate is a part of a
movable body, a part of a building, a part of a structural
substance or a part of a radio using device.
Claim 18
Dependent Claim
26 words
An antenna device wherein the antenna is structured
by an antenna element group where a plurality of antenna
elements are unified at a single feeder section.
Claim 19
Dependent Claim
30 words
An antenna device as claimed in claim 18, wherein taps
are formed at predetermined positions of a plurality of
antenna elements, and joined together to form said single
feeder section.
Claim 20
Dependent Claim
27 words
An antenna device as claimed in claim 18 or 19, wherein
a plurality of antenna elements are identical in tuning
frequency to obtain a predetermined antenna efficiency.
Claim 21
Dependent Claim
45 words
An antenna device as claimed in claim 18 or 19, wherein
a plurality of antenna elements are antennas
corresponding to a plurality of divided frequency bands
obtained by dividing a desired frequency band,
respectively, and a predetermined band is realized by said
antenna element group.
Claim 22
Dependent Claim
23 words
An antenna device as claimed in claim 21, wherein the
tuning frequencies of the respective antenna elements are
set with a predetermined interval.
Claim 23
Dependent Claim
34 words
An antenna device as claimed in claim 18 or 19, wherein
a covered frequency band is set to the upper or the lower
than the tuning frequency when the respective antenna
elements are single.
Claim 24
Dependent Claim
34 words
An antenna device as claimed in claim 18 or ,19, wherein
the width of a set frequency band is adjusted by setting
the number of antenna elements to be connected to a
predetermined number.
Claim 25
Dependent Claim
98 words
An antenna device as claimed in claim 18 or 19, wherein,
provided that any one antenna plane of said plurality of
antenna elements is a reference plane, the arrangement
state of said respective antenna elements is any one of
a state where the respective antennas are close to each
other or concentrated on the reference plane, a state where
the respective antenna planes are disposed
perpendicularly with respect to said reference plane so
that the respective antenna planes are in the form of
layers, or a state where the respective antenna planes
are disposed vertically and shifted horizontally.
Claim 26
Dependent Claim
36 words
An antenna device as claimed in claim 18 or 19, wherein
a longer antenna element is set to a relatively lower
tuning frequency, whereas a shorter antenna element is
set to a relatively higher tuning frequency.
Claim 27
Dependent Claim
28 words
An antenna device as claimed in claim 18 or 19, wherein
a longer antenna element is disposed relatively outside,
whereas a shorter antenna element is disposed relatively
inside.
Claim 28
Dependent Claim
23 words
An antenna device as claimed in claim 18 or 19, wherein
a balanced-to-unbalanced transformer is used for the
feeder section of the antenna.
Claim 29
Dependent Claim
27 words
An antenna device as claimed in claim 18 or 19, wherein
the feeder section of the antenna is connected with an active
element or an amplifier element.
Claim 30
Dependent Claim
50 words
An antenna device as claimed in claim 18 or 19, wherein
an impedance transformer is used to the feeder section
of the antenna, a coil one end of which is grounded and
the other of which is a feeding terminal is disposed
closely, or a balanced coil is disposed closely.
Claim 31
Dependent Claim
24 words
An antenna device as claimed in claim 18 or 19, wherein
an isolator is used to a feeder section of the respective
antenna elements.
Claim 32
Dependent Claim
24 words
An antenna device as claimed in claim 19, wherein a
direction of taking a tap is set arbitrarily for each of
the antenna elements.
Claim 33
Dependent Claim
28 words
An antenna device as claimed in claim 19, wherein an
electrode extending from a feeding terminal to the tap
positions of the respective antenna elements is commonly
used.
Claim 34
Dependent Claim
20 words
An antenna device as claimed in claim 33, wherein said
common electrode is disposed in parallel with said antenna
element.
Claim 35
Dependent Claim
27 words
An antenna device as claimed in claim 19, wherein the
taps of the respective antenna elements are taken through
a reactance element or a variable reactance element.
Claim 36
Dependent Claim
34 words
An antenna device as claimed in claim 35, wherein a
predetermined impedance, a predetermined frequency band,
a predetermined directivity or maximum efficiency is
obtained by adjusting the reactance value of the
respective antenna elements.
Claim 37
Dependent Claim
22 words
An antenna device wherein a tuning frequency is
controlled by setting the coupling of opposed open
terminal portions of an antenna element.
Claim 38
Dependent Claim
39 words
An antenna device in which a tuning frequency is
controlled by setting the coupling of an open terminal
side of an antenna element and a neutral point thereof
or opposed portions thereof in the vicinity of the neutral
point.
Claim 39
Dependent Claim
25 words
An antenna device as claimed in claim 37 or 38, wherein
the coupling of the opposed portions is set by providing
a predetermined distance therebetween.
Claim 40
Dependent Claim
25 words
An antenna device as claimed in claim 37 or 38, wherein
the coupling of the opposed portions is set by connecting
a concentration constant therebetween.
Claim 41
Dependent Claim
56 words
An antenna device wherein at least one linear
conductor is connected to both poles of a coil,
respectively, and an earth terminal is formed at the
neutral point of the coil, and a tap is formed at a
predetermined position of the respective linear
conductors or the coil, from which a feeding terminal is
led out.
Claim 42
Dependent Claim
18 words
An antenna device wherein one or two linear conductors
are provided for a feeder section through a coil.
Claim 43
Dependent Claim
31 words
An antenna device as claimed in any one of claims 1
to 42, wherein the respective antenna elements are formed
on the same substrate or a multi-layer substrate by printed
wiring.
Claim 44
Dependent Claim
27 words
An antenna device as claimed in any one of claims 1
to 43, wherein at least one antenna is selected from a
plurality of antennas under control.
Claim 45
Dependent Claim
29 words
An antenna device as claimed in claims 44, wherein
an antenna maximum in a receiver input is selected under
control in the control for selecting a plurality of
antennas.
Claim 46
Dependent Claim
29 words
An antenna device as claimed in claim 44, wherein an
antenna minimum in multipath interference level is
selected under control in the control for selecting a
plurality of antennas.
Claim 47
Dependent Claim
27 words
An antenna device as claimed in any one of claims 1
to 46, wherein the antenna element is disposed in a recess
of the conductive base plate.
Claim 48
Dependent Claim
30 words
An antenna device as claimed in any one of claims 7
to 17, wherein the conductive base plate comprises a plate
which is mesh-shaped or has at least one through-hole.
Claim 49
Dependent Claim
78 words
An antenna device, comprising: a main antenna element a predetermined portion of
which is grounded; at least one antenna element which is disposed close
to the main antenna element, which is relatively shorter
than the main antenna element, and both ends of which are
not grounded; and at least one antenna element which is disposed close
to the main antenna element, which is relatively longer
than the main antenna element, and both ends of which are
not grounded.
Claim 50
Dependent Claim
20 words
An antenna device as claimed in claim 49, wherein the
antenna element is of the monopole type or dipole type.
Claim 51
Dependent Claim
26 words
An antenna device as claimed in claim 49 or 50, wherein
the respective antenna element are formed on a printed
board by a printed wiring method.
Claim 52
Dependent Claim
30 words
An antenna device as claimed in claim 7, wherein the
size of the conductive base plate is substantially equal
to or smaller than the size of said antenna element
plane.
Claim 53
Dependent Claim
30 words
An antenna device as claimed in claim 52, wherein the
conductive base plate is not connected to another earth
member which is in the vicinity of the conductive base
plate.
Claim 54
Dependent Claim
51 words
An antenna device as claimed in any one of claims 7
to 17, wherein a distance between the conductive base plate
and said antenna element is set to 0.01 to 0.25 times (that
is, 0.01λ to 0.25λ) as large as the wavelength λ in the
resonance frequency f of the antenna.
Claim 55
Dependent Claim
70 words
An antenna device as claimed in any one of claims 7
to 17, wherein, in the case where a plurality of antenna
elements are disposed, a distance between said conductive
base plate and said respective antenna elements is set
to 0.01 to 0.25 times (that is, 0.01λ to 0.25λ) as large
as the wavelength λ in the resonance frequency f of the
respective antennas for each of the antenna element.
Claim 56
Dependent Claim
30 words
An antenna device as claimed in any one of claims 7
to 17, wherein a high dielectric factor member is disposed
between the conductive base plate and said antenna
element.
Claim 57
Dependent Claim
43 words
An antenna device as claimed in claim 44, wherein a
plurality of antennas are located at a plurality of
positions of a car body pillar portion and a roof member
of an automobile, and diversity structure is comprised
of the plurality of antennas.
Claim 58
Dependent Claim
62 words
An antenna device, comprising: a conductive base plate; and an antenna element an earth portion of which is
connected to the conductive base plate and disposed close
to the conductive base plate; wherein at least a region of said conductive base
plate which is opposed to said antenna element is disposed
on a communication counterpart side with respect to said
antenna element.
Claim 59
Dependent Claim
21 words
An antenna device as claimed in claim 58, wherein the
conductive base plate substantially surrounds the
periphery of said antenna element.
Claim 60
Dependent Claim
35 words
An antenna device as claimed in claim 58 or 59, wherein
the conductive base plate is a part of any one of a movable
body, a building, a structural substance, and a radio using
device.
Claim 61
Dependent Claim
53 words
An antenna device, comprising: a conductive base plate; an antenna element an earth portion of which is
connected to the conductive base plate and which is
disposed close to the conductive base plate; and rotating means for rotating said conductive base
plate and said antenna element without any change of its
arrangement state.
Claim 62
Dependent Claim
52 words
An antenna device, comprising: a conductive base plate; an antenna element an earth portion of which is
connected to the conductive base plate and which is
disposed close to the conductive base plate; and ferroelectrics disposed in the periphery of said
antenna element between said conductive base plate and
said antenna element.
Claim 63
Dependent Claim
13 words
An antenna device as claimed in claim 62, wherein the
ferroelectrics are movable.
Claim 64
Dependent Claim
48 words
An antenna device, comprising: a conductive base plate; and an antenna element an earth portion of which is
connected to the conductive base plate and which is
disposed close to the conductive base plate; wherein said antenna element is shaped along the
configuration of said conductive base plate.
Claim 65
Dependent Claim
20 words
An antenna device as claimed in claim 64, wherein the
antenna element is disposed inside of said conductive base
plate.
Claim 66
Dependent Claim
68 words
An antenna device, comprising: a conductive base plate; and a plurality of antenna elements an earth portion of
which is connected to the conductive base plate, which
are disposed close to the conductive base plate in
correspondence with the tuning frequencies of plural
bands, and which is different in length from each other;
and a plurality of feeder sections disposed on each of
the plurality of antenna elements.
Claim 67
Dependent Claim
63 words
An antenna device, comprising: a conductive base plate; and an antenna element an earth portion of which is
connected to the conductive base plate and which is
disposed close to the conductive base plate; wherein said conductive base plate is a part that
forms a substantially vertical wall of an automobile, and
the electric field of the antenna element is formed
substantially horizontally.
Claim 68
Dependent Claim
63 words
An antenna device, comprising: a conductive base plate; and an antenna element an earth portion of which is
connected to the conductive base plate and which is
disposed close to the conductive base plate; wherein said conductive base plate is a part that
forms a substantially horizontal wall of an automobile,
and the electric field of the antenna element is formed
substantially vertically.
Claim 69
Dependent Claim
61 words
An antenna device, comprising: a conductive base plate; and an antenna element an earth portion of which is
connected to the conductive base plate and which is
disposed close to the conductive base plate; wherein said conductive base plate is a part of a
housing wall of a movable unit, and the antenna element
is disposed inside of said housing wall.
Claim 70
Dependent Claim
50 words
An antenna device, comprising: a conductive base plate; and an antenna element disposed close to the conductive
base plate; wherein a predetermined portion of said antenna
element is formed of a coil or zigzag-shaped conductor;
and wherein one end of said antenna element is grounded
to said conductive base plate.
Claim 71
Dependent Claim
51 words
An antenna device as claimed in claim 70, wherein,
in the case where said coil or zigzag-shaped conductor
is formed on the end portion of said antenna element, said
coil or zigzag-shaped conductor are connected to another
portion of said antenna element on an insulator disposed
on said conductive base plate.
Claim 72
Dependent Claim
64 words
An antenna device, comprising: a conductive base plate; and at least two antenna elements which are disposed close
to the conductive base plate and different in length from
each other; wherein the respective predetermined portions of
said antenna elements are formed of coil or zigzag-shaped
conductor; and wherein the respective one ends of said
antenna elements are commonly grounded to said conductive
base plate.
Claim 73
Dependent Claim
66 words
An antenna device, comprising: a conductive base plate; at least two antenna elements which are disposed close
to the conductive base plate and different in length from
each other; and a coil or zigzag-shaped conductor connected to a
common connection point of the respective ends of the
antenna elements; wherein the other end of said coil or zigzag-shaped
conductor is grounded to said conductive base plate.
Claim 74
Dependent Claim
32 words
An antenna device as claimed in claim 73, wherein said
coil or zigzag-shaped conductor and other portion of said
antenna element are connected on an insulator disposed
on said conductive base plate.
Claim 75
Dependent Claim
51 words
An antenna device as claimed in claim 71 or 75, wherein
said coil or zigzag-shaped conductor is divided into two
pieces, the connection of said divided two portions is
conducted on an insulator which is disposed on said
conductive base plate, and the feeder section is connected
to the connection portion.
Claim 76
Dependent Claim
29 words
An antenna device wherein an antenna element is
wholly formed of a coil or zigzag-shaped conductor and
formed in a shape having at least one bent or curved
portion.
Claim 77
Dependent Claim
52 words
An antenna device, comprising: a conductive base plate; and an antenna element one end of which is grounded to
the conductive base plate and which is disposed close to
the conductive base plate; wherein a feeder section is connected to an insulator
disposed on said conductive base plate as a junction point.
Claim 78
Dependent Claim
75 words
An antenna device, comprising: a conductive base plate; and an antenna element one end of which is grounded to
the conductive base plate and which is disposed close to
the conductive base plate; wherein a through-hole is formed in said conductive
base plate, an insulator is disposed on said conductive
base plate at a side opposite to said antenna element of
the through-hole, and a feeder section is connected on
said insulator through said through-hole.
Claim 79
Dependent Claim
41 words
An antenna device as claimed in claim 78, wherein at
least one different insulator is disposed at a side where
said insulator of said conductive base plate is provided,
and circuit component is connected between the different
insulator and said insulator.
Claim 80
Dependent Claim
89 words
An antenna device, comprising: a conductive base plate; an antenna element disposed close to the conductive
base plate; and a conductive case disposed between the antenna
element and said conductive base plate and having a
through-hole at a predetermined portion; wherein one end of said antenna element is grounded
to said conductive case, a feeder section is connected
through said through-hole to one of a plurality of
insulators disposed on said conductive base plate within
said conductive case, and a circuit component is connected
on said plurality of insulators.
Claim 81
Dependent Claim
110 words
An antenna device, comprising: a conductive base plate; an insulating plate disposed close to the conductive
base plate; an antenna element formed on said insulating plate
at a side far from said conductive base plate; a conductor A that penetrates said insulating plate
from the antenna element; and a conductor B connected to the conductor A and formed on
a surface opposite to a surface on which said antenna
element of said insulating plate is formed; wherein one end of said antenna element is grounded
to said conductive base plate, and the feeder section is
connected in the vicinity of said one end of said conductor B
which is grounded.
Claim 82
Dependent Claim
54 words
An antenna device, comprising: a conductive base plate; an insulating plate disposed on the conductive base
plate; a conductive plate disposed on the insulating plate
and smaller in area than said conductive base plate; and an antenna element disposed close to the conductive
plate, one end of which is grounded to said conductive
plate.
Claim 83
Dependent Claim
28 words
An antenna device as claimed in claim 82, wherein an
area of said conductive plate and an area of said antenna
element are substantially identical with each other.
Claim 84
Dependent Claim
26 words
An antenna device as claimed in any one of claims 72
to 75, wherein said at least two antenna elements are
unified by a single feeder.
Claim 85
Dependent Claim
45 words
An antenna device as claimed in claim 84, wherein said
at least two antenna elements comprise antennas
corresponding to a plurality of division frequency bands
obtained by dividing a target frequency band,
respectively, wherein a desired frequency band is
realized by said antenna element groups.
Claim 86
Dependent Claim
40 words
An antenna device comprising a conductive base plate on which a conductive plate
which is used for earthing, an antenna element which is provided near said
conductive base plate and one edge of which is connected
to said conductive plate.
Claim 87
Dependent Claim
26 words
An antenna device as claimed claim 86 ,wherein a plane of the antenna element and the base plate
are substantially provided in parallel to each other.
Claim 88
Dependent Claim
30 words
An antenna device as claimed claim 86 or 87,wherein an area of plane of the antenna element and an area
of the base plate are substantially same to each other.
References Cited (Backward Citations)
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