CN109103566A - FM antenna structure - Google Patents
FM antenna structure Download PDFInfo
- Publication number
- CN109103566A CN109103566A CN201710474050.7A CN201710474050A CN109103566A CN 109103566 A CN109103566 A CN 109103566A CN 201710474050 A CN201710474050 A CN 201710474050A CN 109103566 A CN109103566 A CN 109103566A
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- CN
- China
- Prior art keywords
- antenna
- wire
- wound coils
- solid
- back segment
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/14—Supports; Mounting means for wire or other non-rigid radiating elements
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q7/00—Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop
- H01Q7/06—Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop with core of ferromagnetic material
- H01Q7/08—Ferrite rod or like elongated core
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
- H01Q9/04—Resonant antennas
- H01Q9/16—Resonant antennas with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole
- H01Q9/26—Resonant antennas with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole with folded element or elements, the folded parts being spaced apart a small fraction of operating wavelength
- H01Q9/27—Spiral antennas
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- Details Of Aerials (AREA)
Abstract
The invention discloses a kind of FM antenna structures comprising at least a wire-wound coils antenna and at least a solid-state material；The wire-wound coils antenna has a front end, which is signal feed-in point；The solid-state material is placed through the wire-wound coils inner antenna, and only occupies the part paragraph of the wire-wound coils antenna, so that it is hollow that the segment space of the wire-wound coils inner antenna, which has the solid-state material, its complementary space,.Whereby, the present invention has the advantages that antenna length is short, signal energy loss less and is easy to reach impedance matching.
Description
Technical field
The present invention relates to a kind of antenna structure, espespecially a kind of automobile-used FM antenna structure.
Background technique
The shark fins antenna of known technology is fixedly arranged on automobile top and electricity is connected to seat radio, to listen to the radio station of FM
Program.The inside of this shark fins antenna has an antenna made of conductive metal, for example, TaiWan, China announces M457311
Number " the shark fins antenna structure of improvement " patent has disclosed a kind of shark fins antenna and has included a circuit board and be welded in the circuit board
On a magnetic core wire-wound coils antenna, to receive FM signal.The inside of this magnetic core wire-wound coils antenna is entirely by magnetic core
It is taken, therefore the received FM signal energy of institute causes energy loss there are many that can be absorbed by magnetic core.
For another example antenna structure disclosed by TaiWan, China bulletin M297054 patent is then by two upright half-waves side by side
Long antenna is constituted, and each half-wavelength antenna is circled round the circulation of formation by a metal wire.In addition, TaiWan, China is announced
No. I520433 shark fin type car antenna also discloses a kind of gradually floor ladder for bending in continous way trapezoidal shape and being gradually increased backward
Shape antenna.It is hollow wire-wound coils antenna, this hollow windings' formula antenna entirely that wherein disclosed antenna, which is all inside this,
Although caused energy loss is less than magnetic core wire-wound coils antenna above-mentioned, relatively long length is needed.
It can be seen that known magnetic core wire-wound coils antenna still has improved necessity in terms of energy loss and length.
Summary of the invention
Although known FM wire-wound coils antenna is as already mentioned and there are many structure, it is, however, still a need to continue development one
Kind length is shorter, energy loss is less and is easy to the new-type FM wire-wound coils antenna of impedance matching.
In view of this, the present invention provides a kind of FM antenna structure comprising at least a wire-wound coils antenna and at least a solid-state
Material；The wire-wound coils antenna has a leading portion, connects a middle section of the leading portion and connect a back segment in the middle section, before this
Section has a front end, which is signal feed-in point；The solid-state material is placed through the leading portion of the wire-wound coils antenna, in this
The inside of section or the back segment, and make the segment space of the wire-wound coils inner antenna that there is the solid-state material, its complementary space
It is hollow.It wherein, can be that hollow part is bent further directed to the wire-wound coils inner antenna, so that the Wound-rotor type
Coil antenna is arc-shaped, or the leading portion of the wire-wound coils antenna is made to be parallel to the back segment and perpendicular to the middle section, the back segment
Perpendicular to the middle section.
Solid-state material of the invention can be placed through leading portion, the middle section or the back segment of the wire-wound coils antenna again, preferably
It is to be set in inside the back segment.Wherein, after which is straightened, the length in the middle section is greater than the length of the back segment,
And the length of the back segment is greater than the length of the leading portion.
In addition, FM antenna structure of the invention further includes another solid-state material, so that the wire-wound coils inner antenna is same
When tool there are two solid-state material.Wherein, two solid-state materials be set in respectively the leading portion of the wire-wound coils antenna with
The inside of the back segment, the leading portion and the inside in the middle section or the inside of the back segment and the middle section.
In addition, the present invention also provides another FM antenna structures comprising a dipole antenna and two solid-state materials；The idol
Pole antenna include two wire-wound coils antennas, the two wire-wound coils antenna alignments in line, wherein a Wound-rotor type
The front end of coil antenna as signal feed-in point, the front end of another wire-wound coils antenna as ground connection, and two it is described around
The front end of wire type coil antenna faces；Two solid-state materials respectively correspond be placed through the two wire-wound coils antennas after
Intersegmental part, so that it is hollow that each wire-wound coils antenna, which only has back segment inside to have the solid-state material, remaining inside,.
Wherein, each wire-wound coils antenna can be bent l-shaped again respectively, so that two solid-state materials face.
Furthermore FM antenna structure of the invention further includes other two solid-state material, and in addition two solid-state materials then divide
Dui Ying not be placed through inside the leading portion of the two wire-wound coils antennas so that each wire-wound coils antenna only have it is described before
It is occupied inside section, the back segment by the corresponding solid-state material, is then hollow inside middle section.
Each solid-state material in above-mentioned FM antenna structure of the invention can be a magnetic core or a ceramic material again.
Relative to prior art, FM antenna structure of the invention, which is taken, " allows wire-wound coils antenna part to be hollow, part
Occupied by solid-state material " the practice, therefore have the advantages that length is short, energy loss is few and be easy to reach impedance matching.
Detailed description of the invention
The following drawings are only intended to schematically illustrate and explain the present invention, not delimit the scope of the invention.Wherein:
The perspective view of first preferred embodiment Fig. 1 of the invention.
The side view of Fig. 2 present invention first preferred embodiment.
The side view of second preferred embodiment Fig. 3 of the invention.
The perspective view of third preferred embodiment Fig. 4 of the invention.
The perspective view of 4th preferred embodiment Fig. 5 of the invention.
The perspective view of 5th preferred embodiment Fig. 6 of the invention.
The perspective view of 6th preferred embodiment Fig. 7 of the invention.
The perspective view of 7th preferred embodiment Fig. 8 of the invention.
Accompanying drawings symbol description:
1 shark fin-shaped shell
2 circuit boards
20 conductive welding pad, 21 independent soldering pad
3 wire-wound coils antennas
31 leading portions
32 middle sections
33 back segments
4,4a, 4b, 4c solid-state material
L conducting wire C connector
Specific embodiment
In order to have clearer understanding to technical solution of the present invention, purpose and effect, now in conjunction with the Detailed description of the invention present invention
Specific embodiment.
First preferred embodiment of Fig. 1,2 displays FM antenna structure of the invention, is essentially the automobile-used shark fins of a FM
Antenna, to receive FM signal.In more detail, FM antenna structure of the invention includes a shark fin-shaped shell 1, is set to the shark
A circuit board 2 in fin shape shell 1, the wire-wound coils antenna 3 and a solid-state material 4 for connecting the circuit board 2.The electricity
One surface of road plate 2 has a conductive welding pad 20, which is used to collect the radio signal of bandwidth,
In this embodiment for collecting FM signal.Wherein, a front end 30 of the wire-wound coils antenna 3 is welded in the conductive welding pad
20, make the wire-wound coils antenna 3 be fixed on the circuit board 2 whereby.The front end 30 of the wire-wound coils antenna 3 is used as signal
Load point is connected to a connector C by a conducting wire L, and connector C can be bolted in a coaxial cable (not shown),
So that FM signal collected by the wire-wound coils antenna 3 can be via the front end 30, conducting wire L, connector C and the coaxial cable
One radio of feed-in, such as seat radio.
The solid-state material 4 is placed through inside a back segment 33 of the wire-wound coils antenna 3, so that the wire-wound coils antenna
There is the solid-state material 4, remaining paragraph is hollow inside 3 back segment 33.The solid-state material 4, which can also change, is placed through the Wound-rotor type line
Middle section 32 or the leading portion 31 of antenna 3 are enclosed, remaining paragraph is hollow, but is preferably set in the back segment 33, because working as the solid-state material
When material 4 is located at the back segment 33 of the wire-wound coils antenna 3, the energy absorbed in the FM signal can be relatively low, therefore can subtract
The energy loss of few FM signal.
The solid-state material 4 includes core material and dielectric material, such as a magnetic core or a ceramic member, and the material of the magnetic core can
For a kind of sintered metal oxide being made of various iron oxide mixtures, for example, by manganese-zinc ferrite or nickel-zinc ferrite
Made magnetic core.In this embodiment, which is a hollow cylinder, but can also be solid cylinder or other
The hollow or solid cylinder of shape.It anyway, can be by the suitable of antenna structure of the invention by the setting of the solid-state material 4
It is adjusted with frequency to 88~108MHz, and shortens 3 length of wire-wound coils antenna and increase reception efficiency.Wherein, the solid-state
The length of material 4 is inversely proportional with overall antenna length degree.
Since the solid-state material 4 only occupies 3 a part of the wire-wound coils antenna, thus the wire-wound coils antenna 3 its
Its part (i.e. internal is hollow part) is with the characteristic that can be bent, in this embodiment, the wire-wound coils antenna 3
Three paragraphs are bent into, those paragraphs are respectively to connect the front end 30 and stand on the leading portion 31 of the circuit board 2, be connected in this
It leading portion 31 and is horizontally placed on the middle section 32 of 2 top of the circuit board and is connected in the middle section 32 and stands on the back segment of the circuit board 2
33, which has an end 330, which, which is fixed on the circuit board 2 and does not constitute with the front end 30, electrically connects
It connects.Preferably, having an independent soldering pad 21 on the circuit board 2, which is not constituted with the conductive welding pad 20 electrically connects
It connects, which is welded in the independent soldering pad 21, is used only to fix the back segment 33.
In Fig. 1,2, the wire-wound coils antenna 3 bent and generally in ㄇ type but it is also possible to be inverted u-shaped or arc.
In addition, the leading portion 31 (containing front end 30) of the wire-wound coils antenna 3, middle section 32 and back segment 33 (containing end 330), after being straightened
Length preferably respectively may be about 172mm, 282mm and 188mm, be 642mm in total, wherein with 32 longest of middle section, secondary is back segment 33,
And leading portion 31 is most short.And leading portion 31 (containing front end 30), middle section 32 and the back segment 33 (containing end 330) of the wire-wound coils antenna 3
Wire circle preferably respectively may be about 5.5 circles, (corresponding length is respectively 2.5 centimeters, 3.5 centimeters and 2 public for 9 circles and 6 circles
Point), wherein being enclosed with middle section 32, number is most, and secondary is back segment 33, and leading portion 31 is minimum.
Referring to Fig. 3, the second preferred embodiment of display FM antenna structure of the invention, it is substantially the same in above-mentioned the
One preferred embodiment, the difference is that, second preferred embodiment more a solid-state material 4a, solid-state material 4a are located at
Inside the leading portion 31, it can optionally select to take or part occupies inside the leading portion 31.Wherein, the part in the middle section 32 still maintains
It is all hollow.
Referring to Fig. 4, showing in the third preferred embodiment of FM antenna structure of the invention, it is preferably real to be different from first
In place of applying example, it is only that the wire-wound coils antenna 3 is of a straight line type, and favour circuit board 2, so that its end 330 is hanging.
Referring to Fig. 5, showing in the 4th preferred embodiment of FM antenna structure of the invention, it is substantially the same in above-mentioned
Third preferred embodiment, the difference is that, the 4th preferred embodiment more solid-state material 4b, the solid-state material 4b
Inside the leading portion 31 of the wire-wound coils antenna 3, it can optionally select to take or part occupies inside the leading portion 31.Wherein,
The part in the middle section 32 still remains all hollow.
Referring to Fig. 6, showing the 5th preferred embodiment of FM antenna structure of the invention, which constitutes radiation
The preferable dipole antenna of benefit comprising identical two wire-wound coils antenna 3 and identical two solid-state material 4, and it is each
Solid-state material 4 respectively corresponds inside the back segment 33 of each wire-wound coils antenna 3, so that each wire-wound coils antenna 3
It is only occupied inside its back segment 33 by corresponding solid-state material 4, remaining section of each paragraph is then hollow.The two wire-wound coils antenna
3 are arranged in a straight line, and its front end 30 is welded in circuit board 2, and end 330 is then hanging.Two front end 30 faces, and its
In the front end 30 of a wire-wound coils antenna 3 be to be connected to a signal feed-in point, the front end 30 of another wire-wound coils antenna 3 is then
It is to be connected to ground connection.By generally frequently as the coaxial cable of antenna connection cable for, wherein a wire-wound coils antenna 3 is just for this
The center copper wire being connected inside the coaxial cable, another wire-wound coils antenna 3 then connect the outer layer gold of the coaxial cable
Belong to knitmesh.
Referring to Fig. 7, wherein show the 6th preferred embodiment of FM antenna structure of the invention, be approximately identical to this
Five preferred embodiments, the difference is that more two solid-state material 4c, and this extra two solid-state material 4c difference
Correspondence is placed through inside the leading portion of each wire-wound coils antenna 3, so that the leading portion 31 and back segment of each wire-wound coils antenna 3
It is all occupied by corresponding solid-state material 4c, solid-state material 4 inside 33, only middle section 32 is hollow.
Refering to Fig. 8, wherein showing the 7th preferred embodiment of FM antenna structure of the invention, it is approximately identical to the 5th
Preferred embodiment, the difference is that the hollow paragraph of each wire-wound coils antenna 3 is all bent, so that each Wound-rotor type line
Circle antenna 3 is all bent l-shaped, and two solid-state material 4 faces.
In conclusion FM antenna structure of the invention is part quilt because of the inside of its wire-wound coils antenna 3 taken
Solid-state material 4 occupies, partially to be hollow, therefore the FM wire-wound coils antenna taken entirely by magnetic core compared to known inside, this hair
The bright received FM signal energy loss of 3 institute of wire-wound coils antenna is less, and relative to internal all hollow known nothings
Magnetic core FM wire-wound coils antenna, by the setting of the solid-state material 4, wire-wound coils antenna 3 of the invention not only length compared with
It is short and be easier to reach impedance matching.
The foregoing is merely the schematical specific embodiment of the present invention, the range being not intended to limit the invention.It is any
Those skilled in the art, made equivalent changes and modifications under the premise of not departing from design and the principle of the present invention,
It should belong to the scope of protection of the invention.And it should be noted that each component part of the invention is not limited in above-mentioned entirety
Using one can be selected individually to use according to actual needs for each technical characteristic described in specification of the invention or selection is more
Item combines use, and therefore, the present invention covers in the nature of things related with this case inventive point other to be combined and specifically answer
With.
Claims (10)
1. a kind of FM antenna structure, which is characterized in that the FM antenna structure includes:
One wire-wound coils antenna has a leading portion, connects a middle section of the leading portion and connect a back segment in the middle section, before this
Section has a front end, which is signal feed-in point；And
One solid-state material is placed through the inside of the wire-wound coils antenna leading portion, the middle section or the back segment, so that the Wound-rotor type
It is hollow that segment space inside coil antenna, which has the solid-state material, its complementary space,.
2. FM antenna structure as described in claim 1, which is characterized in that the wire-wound coils inner antenna is hollow part
It is bent, so that the wire-wound coils antenna is arc-shaped.
3. FM antenna structure as described in claim 1, which is characterized in that the leading portion of the wire-wound coils antenna is parallel to this
Back segment and perpendicular to the middle section, the back segment is perpendicular to the middle section.
4. FM antenna structure as described in claim 1, which is characterized in that after the wire-wound coils antenna is straightened, the middle section
Length is greater than the length of the back segment, and the length of the back segment is greater than the length of the leading portion.
5. FM antenna structure as described in claim 1, which is characterized in that the FM antenna structure further includes another solid-state material
Material, two solid-state materials be placed through respectively the leading portion of the wire-wound coils antenna and the inside of the back segment or the leading portion with
The inside in the middle section or the inside of the back segment and the middle section.
6. the FM antenna structure as described in claim 1,2,3,4 or 5, which is characterized in that each solid-state material is a magnetic
Core or a ceramic material.
7. a kind of FM antenna structure, which is characterized in that the FM antenna structure includes:
One dipole antenna, including two wire-wound coils antennas, the two wire-wound coils antenna alignments in line, wherein an institute
The front end of wire-wound coils antenna is stated as signal feed-in point, the front end of another wire-wound coils antenna is used as ground connection, and
The front end of the two wire-wound coils antennas faces；
Two solid-state materials are respectively corresponded and are placed through inside a back segment of the two wire-wound coils antennas so that it is each it is described around
It is hollow that wire type coil antenna, which only has inside the back segment and has the solid-state material, remaining inside,.
8. FM antenna structure as claimed in claim 7, which is characterized in that each wire-wound coils antenna is respectively bent into
L-type, and two solid-state materials face.
9. FM antenna structure as claimed in claim 7, which is characterized in that the FM antenna structure further includes other two solid-states material
Material, in addition two solid-state materials, which respectively correspond, is placed through inside the leading portion of the two wire-wound coils antennas, so that each institute
It states wire-wound coils antenna and there was only the leading portion, occupied by the corresponding solid-state material inside the back segment, inside middle section then
It is hollow.
10. the FM antenna structure as described in claim 7,8 or 9, which is characterized in that each solid-state material be a magnetic core or
One ceramic material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710474050.7A CN109103566A (en) | 2017-06-21 | 2017-06-21 | FM antenna structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710474050.7A CN109103566A (en) | 2017-06-21 | 2017-06-21 | FM antenna structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109103566A true CN109103566A (en) | 2018-12-28 |
Family
ID=64796071
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710474050.7A Pending CN109103566A (en) | 2017-06-21 | 2017-06-21 | FM antenna structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109103566A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003087031A (en) * | 2001-09-10 | 2003-03-20 | Yokowo Co Ltd | Antenna |
| KR20090072207A (en) * | 2007-12-28 | 2009-07-02 | 알에프컨트롤스 주식회사 | Antenna for shark fin type and receiver thereby |
| JP2011049831A (en) * | 2009-08-27 | 2011-03-10 | Mitsubishi Electric Corp | Coil for antenna and method for manufacturing the same |
| CN104810625A (en) * | 2014-01-28 | 2015-07-29 | 现代自动车株式会社 | Multiple band antenna for vehicle and manufacturing method thereof |
| TWI520433B (en) * | 2012-12-05 | 2016-02-01 |
-
2017
- 2017-06-21 CN CN201710474050.7A patent/CN109103566A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003087031A (en) * | 2001-09-10 | 2003-03-20 | Yokowo Co Ltd | Antenna |
| KR20090072207A (en) * | 2007-12-28 | 2009-07-02 | 알에프컨트롤스 주식회사 | Antenna for shark fin type and receiver thereby |
| JP2011049831A (en) * | 2009-08-27 | 2011-03-10 | Mitsubishi Electric Corp | Coil for antenna and method for manufacturing the same |
| TWI520433B (en) * | 2012-12-05 | 2016-02-01 | ||
| CN104810625A (en) * | 2014-01-28 | 2015-07-29 | 现代自动车株式会社 | Multiple band antenna for vehicle and manufacturing method thereof |
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|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20181228 |
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| WD01 | Invention patent application deemed withdrawn after publication |