CN102956991B - Antenna - Google Patents
Antenna Download PDFInfo
- Publication number
- CN102956991B CN102956991B CN201210293271.1A CN201210293271A CN102956991B CN 102956991 B CN102956991 B CN 102956991B CN 201210293271 A CN201210293271 A CN 201210293271A CN 102956991 B CN102956991 B CN 102956991B
- Authority
- CN
- China
- Prior art keywords
- insulation board
- external connection
- capacitor
- pattern
- loop antenna
- 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.)
- Expired - Fee Related
Links
Classifications
-
- 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
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
- G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
- G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
- G06K19/077—Constructional details, e.g. mounting of circuits in the carrier
-
- 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
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
- H01Q1/2208—Supports; Mounting means by structural association with other equipment or articles associated with components used in interrogation type services, i.e. in systems for information exchange between an interrogator/reader and a tag/transponder, e.g. in Radio Frequency Identification [RFID] systems
- H01Q1/2225—Supports; Mounting means by structural association with other equipment or articles associated with components used in interrogation type services, i.e. in systems for information exchange between an interrogator/reader and a tag/transponder, e.g. in Radio Frequency Identification [RFID] systems used in active tags, i.e. provided with its own power source or in passive tags, i.e. deriving power from RF signal
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
- H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
Landscapes
- Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Details Of Aerials (AREA)
- Support Of Aerials (AREA)
Abstract
The antenna (A) of the present invention possesses: loop antenna element portion (1), is made up of the conductor (11a ~ 11d) extended in the form of a ring；Interposer (2), connects the end in loop antenna element portion (1).Interposer (2) possesses: insulation board (20)；External connection pad (21,22)；Element connection gasket (23a ~ 23h)；And capacitor pattern (24,25).External connection pad (21,22) is located at the surface of insulation board (20), is connected with the conductor of transceiver.Element connection gasket (23a ~ 23h) is located at any one of the surface of insulation board (20) and the back side, connects the end in loop antenna element portion (1).Capacitor pattern (24,25) is among the back side of insulation board (20), it is located at and clips insulation board (20) region opposed with external connection pad (21,22) and electrically connect with element connection gasket (23a, 23h), between capacitor pattern (24,25) and external connection pad (21,22), form capacitor.Thus provide parts number of packages few, there is the antenna in the wave filter portion that area reduces.
Description
Technical field
The present invention relates to antenna.
Background technology
Carrying out the RFID(Radio Frequency of wireless near field communication
IDentification, RF identification) transmitting-receiving in, employ loop aerial (loop
Antenna).Such as, in patent documentation 1, it is shown that such RFID antenna: by connecting many respective antenna at the connecting portion being arranged at shell, form multiple ring at the many respective antenna being connected in series.
In such RFID antenna, in order to reduce the noise arriving the radio communication beyond RFID, or in order to reduce and the coupling of the wireless communication system beyond RFID, it may be considered that carry traffic filter.
Such as, in patent documentation 2, it is shown that possessing the flexible membrane of dielectric medium resonant device, arrange and form constituting of the opposed facing conductive pattern of capacitor and the wave filter portion that is made up of plane coil pattern.
Patent documentation 1: Japanese Unexamined Patent Publication 2009-60519 publication
Patent documentation 2: Japanese Unexamined Patent Publication 10-242706 publication.
Summary of the invention
But, in this dielectric medium resonant device, owing to being configured with the pattern special as capacitor, so the area that wave filter portion occupies on the flexible film is big.Further, since need the connecting portion for the L-shaped being connected with bulky resonator, so in addition to becoming the hard substrate of substrate of dielectric medium resonant device, in addition it is also necessary to flexible membrane.Therefore, parts number of packages can increase.
It is an object of the invention to, solve the problems referred to above point, it is provided that reduce parts number of packages, there is the antenna in the wave filter portion that area reduces.
The antenna of the present invention reaching above-mentioned purpose is characterised by possessing:
Loop antenna element portion, is made up of the conductor extended in the form of a ring；And
Interposer, the signal relayed between above-mentioned loop antenna element portion and transceiver is connected with the end in above-mentioned loop antenna element portion,
Above-mentioned interposer possesses:
Insulation board；
External connection pad (pad), the conductor on the surface and above-mentioned transceiver that are located at above-mentioned insulation board is connected；
Element connection gasket, any one being located at the surface of above-mentioned insulation board and the back side is connected with the end in above-mentioned loop antenna element portion；
Capacitor pattern, among the back side of above-mentioned insulation board, is located at and clips the region that this insulation board is opposed with said external connection gasket, and electrically connect with said elements connection gasket, forms capacitor between this capacitor pattern and said external connection gasket；And
Inductor element.
In the antenna of the present invention, directly form capacitor at the interposer that the signal between loop antenna element portion and transceiver is relayed.It addition, form of the pair of electrodes of capacitor, it is also used as external connection pad.Therefore, the parts number of packages of antenna reduces, it addition, the area of substrate reduces.
Here, in the antenna of the invention described above, the most above-mentioned inductor element is connected with said external connection gasket and above-mentioned capacitor pattern respectively on the surface of above-mentioned insulation board and the back side, the region mutually opposing at the insulation board clipping surface and the back side extends in swirling respectively, and the through insulation board in each front end extended in swirling respectively is connected with each other.
Due to inductor element utilize clip the mutually opposing region of insulation board both and configure, it is possible to smaller area configure.Therefore, the area of substrate reduces further.
As described above, according to the present invention, it is achieved the antenna in the wave filter portion that parts number of packages is few, have area reduces.
Accompanying drawing explanation
Fig. 1 is the outside drawing of the RFID antenna as an embodiment of the invention.
Fig. 2 is the outside drawing illustrating the interposer shown in Fig. 1.The part (A) of Fig. 2 be surface, partly (B) be the back side.
Fig. 3 is the circuit diagram of the equivalent circuit illustrating the RFID antenna shown in Fig. 1 and Fig. 2.
Description of reference numerals
A:RFID antenna；1: loop antenna element portion；11a, 11b, 11c, 11d: electric wire；2: interposer；20: insulation board；21,22: external connection pad；23a ~ 23h: element connection gasket；24,25: capacitor pattern；26a, 27a: surface conductor pattern；26b, 27b: backside inductors pattern.
Detailed description of the invention
With reference to the following drawings, embodiments of the present invention are described.
Fig. 1 is the outside drawing of the RFID antenna as an embodiment of the invention.
RFID antenna A shown in Fig. 1 is the device for carrying out the radio communication in RFID.RFID antenna A is connected and action with not shown transceiver.
RFID antenna A possesses loop antenna element portion 1 and interposer 2.
Loop antenna element portion 1 is made up of a plurality of electric wire 11a ~ 11d extended in the form of a ring.More specifically, loop antenna element portion 1 is to be covered each by 4 individual wire 11a ~ 11d and ties to be the multicore cable C of.Each the two ends of four electric wire 11a ~ 11d that multicore cable C has are connected with interposer 2.Be there is by use the multicore cable C of four electric wire 11a ~ 11d, only cable C be cut to certain length and remove the covering at two ends, it becomes possible to being inexpensively made and there is the most identical length and repeatedly around the antenna element in identical region.
Article four, each the two ends of electric wire 11a ~ 11d are connected to interposer 2.It addition, be provided with two external connection pads 21,22 at interposer 2.The externally connected connection gasket of not shown transceiver 21,22.
Fig. 2 is the outside drawing illustrating the interposer shown in Fig. 1.Part (A) at Fig. 2 illustrates the surface of the interposer 2 shown in Fig. 1；Illustrate from the back side seen with part (A) opposite side in part (B).
Interposer 2 shown in Fig. 2 has: insulation board 20 and be located at surface and the conductive pattern on the back side (surface) of insulation board 20.Insulation board 20 is the plate being made up of insulant (electrolyte).But, the film being made up of insulant also can be used at insulation board 20.It addition, conductive pattern is made up of metal material.
On the surface of the insulation board 20 shown in the part (A) of Fig. 2, outside the external connection pad 21,22 of front explanation, it is additionally provided with 6 element connection gasket 23a ~ 23h and two surface conductor pattern 26a, 27a.It addition, at the back side of the insulation board 20 shown in the part (B) of Fig. 2, be provided with two capacitor pattern 24,25 and two backside inductors pattern 26b, 27b.
The externally connected connection gasket of not shown transceiver 21,22, in transceiver and RFID antenna A(with reference to Fig. 1) between can Change Power and signal.The terminal of not shown transceiver contacts with external connection pad 21,22.But, at outside connection gasket 21,22, in addition to the contact of terminal, the most such as, solder connection can also have the wire extended from transceiver.External connection pad 21,22 at least has the area for connecting the contact site of transceiver, wire.
At element connection gasket 23a ~ 23h, solder connection have constitute loop antenna element portion 1(with reference to Fig. 1) the two ends of electric wire 11a ~ 11d.As being connected in series in four electric wire 11a ~ 11d, element connection gasket 23a ~ the some of 23h are connected with each other via conductive pattern.Therefore, only by the two ends of four electric wire 11a ~ 11d and element connection gasket 23a ~ 23h solder connection, it becomes possible to make four circle loop aerials.Among 8 element connection gasket 23a ~ 23h, two ends configuration 2 elements connection gasket 23a, 23h as the loop antenna element portion 1(being made up of four rings with reference to Fig. 1) terminal work.
Capacitor pattern 24,25 is located at and clips the region that insulation board 20 is the most opposed with external connection pad 21,22.It addition, capacitor pattern 24,25 is connected with above-mentioned two element connection gasket 23a, 23h via conductive pattern and through hole 24h, 25h respectively.
Among capacitor pattern 24,25, a capacitor pattern 24 clips insulation board 20 between itself and external connection pad 21, forms capacitor element between itself and external connection pad 21.It addition, another capacitor pattern 25 clips insulation board 20 between itself and external connection pad 22, between itself and external connection pad 22, form capacitor element.Capacitor pattern 24,25 clips insulation board 20 and the overlapping area of external connection pad 21,22, is thickness and the dielectric constant of consideration insulation board 20, sets in the way of obtaining required electric capacity.
In the present embodiment, external connection pad 21,22 is also used as the electrode of capacitor element.Therefore, the total area shared by insulation board 20 of capacitor element reduces.
It addition, be formed with two inductor elements at interposer 2.Here, be conceived to two surface conductor pattern 26a shown in part (A) of Fig. 2,27a one of them surface conductor pattern 26a and one of them the backside inductors pattern 26b of two backside inductors pattern 26b, 27b shown in part (B) of Fig. 2.These surface conductor pattern 26a and backside inductors pattern 26b, be that swirling extends clipping insulation board 20 region opposite one another, and each front end extended in swirling respectively is interconnected by the through hole 26h of through insulation board 20.About whirlpool and the whirlpool of backside inductors pattern 26b of surface conductor pattern 26a, the electric current spreading all over both flowings forms the direction rotated in same direction.The combination of surface conductor pattern 26a and backside inductors pattern 26b is equivalent to an example of the inductor element described in the present invention.
Surface conductor pattern 26a and backside inductors pattern 26b extend in swirling respectively, are respectively provided with inductance.In the present embodiment, owing to surface conductor pattern 26a and backside inductors pattern 26b are clipping the extension in swirling respectively of insulation board 20 region opposite one another, so the mutual inductance between surface conductor pattern 26a and backside inductors pattern 26b increases further.Therefore, with such as two conductor pattern in the same face situation arranged side by side, situation about being formed with a swirls compared with, reduce for obtaining the total configuration area of required inductance.This situation is for another surface conductor pattern 27a and backside inductors pattern 27b too.The combination of these another surface conductor pattern 27a and backside inductors pattern 27b also corresponds to an example of the inductor element described in the present invention.
So, capacitor element and inductor element are formed at interposer 2.By the capacitor element formed and inductor element, shaping filter circuit.
Fig. 3 is the circuit diagram of the equivalent circuit illustrating the RFID antenna shown in Fig. 1 and Fig. 2.Each element in circuit diagram, is illustrated by the label corresponding with the key element shown in Fig. 1 and Fig. 2.
Between outside connection gasket 21 and loop antenna element portion 1, it is connected in parallel to the capacitor element (21,22) being made up of external connection pad 21 and capacitor pattern 24 and the inductor element (26a, 26b) being made up of surface conductor pattern 26a and backside inductors pattern 26b.Additionally, between another external connection pad 22 and loop antenna element portion 1, it is connected in parallel to the capacitor element (25,22) being made up of external connection pad 22 and capacitor pattern 25 and the inductor element (27a, 27b) being made up of surface conductor pattern 27a and backside inductors pattern 27b.
By these capacitor elements (21,24), (25,22), inductor element (26a, 26b), (27a, 27b) and the inductance in loop antenna element portion 1, constitute band resistance (band elimination) wave filter.By this wave filter, it is possible to from the signal of communication band of RFID antenna A radiation RFID, and reduce the effect of noise of other radio communication functions of electronic equipment for carrying RFID antenna A, reduce and the coupling of other wireless communication systems.
Additionally, in the above-described embodiment, as the example of the antenna described in the present invention, it is shown that RFID antenna A.But, the invention is not restricted to RFID antenna, it is also possible to be the communication antenna of other purposes, frequency band.
It addition, capacitor element, inductor element in above-mentioned embodiment constitute band elimination filter.But, the invention is not restricted to this, it is also possible to be high pass filter, low pass filter or band filter.
It addition, interposer 2 in the above-described embodiment, capacitor element, inductor element form two respectively.But, the invention is not restricted to this, it is also possible to form 1 or the element of more than 3.It addition, element connection gasket can also be located at the back side of insulation board.It addition, the radical of the number of turns of the ring in loop antenna element portion 1, i.e. electric wire can also be the quantity beyond 4.
It addition, in the above-described embodiment, as external connection pad 21,22, it is shown that element connection gasket 23a ~ 23h is arranged in the example on the surface of insulation board 20.But, the element connection gasket of the present invention can also be arranged in the back side of such as insulation board.
It addition, in the above-described embodiment, it is shown that electric wire is as the example of the conductor in the loop antenna element portion described in the present invention.But, the conductor of the present invention is not limited to electric wire, it is also possible to be the pattern of the ring such as formed on interposer.
Claims (1)
1. an antenna, it is characterised in that possess:
Loop antenna element portion, is made up of the conductor extended in the form of a ring；And
Interposer, relays the signal between described loop antenna element portion and transceiver, is connected with the end in described loop antenna element portion,
Described interposer possesses:
Insulation board；
External connection pad, the conductor on the surface and described transceiver that are located at described insulation board is connected；
Element connection gasket, any one being located at the surface of described insulation board and the back side is connected with the end in described loop antenna element portion；
Capacitor pattern, among the back side of described insulation board, is located at and clips this insulation board and the region opposed with described external connection pad, and electrically connect with described element connection gasket, forms capacitor between described capacitor pattern and described external connection pad；And
Inductor element,
Wherein, by described capacitor, described inductor element and the inductance in described loop antenna element portion, constitute band elimination filter, described inductor element is connected with described external connection pad and described capacitor pattern respectively on the surface of described insulation board and the back side, being that swirling extends in the region that this insulation board clipping this surface and this back side is mutually opposing, each front end this insulation board through extended in swirling respectively is connected with each other.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011-178463 | 2011-08-17 | ||
| JP2011178463A JP5709690B2 (en) | 2011-08-17 | 2011-08-17 | antenna |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102956991A CN102956991A (en) | 2013-03-06 |
| CN102956991B true CN102956991B (en) | 2016-12-07 |
Family
ID=47765462
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210293271.1A Expired - Fee Related CN102956991B (en) | 2011-08-17 | 2012-08-17 | Antenna |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP5709690B2 (en) |
| KR (1) | KR20130020563A (en) |
| CN (1) | CN102956991B (en) |
| TW (1) | TWM448806U (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI509891B (en) * | 2013-11-22 | 2015-11-21 | Wistron Neweb Corp | Loop antenna |
| KR102092837B1 (en) * | 2018-05-11 | 2020-03-24 | 남기창 | Filter combined microstrip antenna |
| KR102348470B1 (en) | 2019-04-04 | 2022-01-06 | 동우 화인켐 주식회사 | Antenna device and display device including the same |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101404354A (en) * | 2007-10-03 | 2009-04-08 | 索尼株式会社 | Antenna substrate for non-contact communication apparatus and non-contact communication apparatus |
| WO2010066955A1 (en) * | 2008-12-11 | 2010-06-17 | Yves Eray | Rfid antenna circuit |
| WO2011002049A1 (en) * | 2009-07-03 | 2011-01-06 | 株式会社村田製作所 | Antenna and antenna module |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4472408B2 (en) * | 2004-04-08 | 2010-06-02 | 富士通株式会社 | Mobile terminal device |
| JP2006191194A (en) * | 2004-12-28 | 2006-07-20 | Sumitomo Electric Ind Ltd | Collective electric cable, coil antenna, ic card, and mobile radio set |
| JP2007214646A (en) * | 2006-02-07 | 2007-08-23 | Fdk Corp | Antenna for noncontact communication |
| JP4762960B2 (en) * | 2007-09-03 | 2011-08-31 | タイコエレクトロニクスジャパン合同会社 | Loop antenna and manufacturing method of loop antenna |
| JP5066425B2 (en) * | 2007-10-16 | 2012-11-07 | 株式会社フジクラ | Coil antenna |
| KR100928119B1 (en) * | 2007-10-30 | 2009-11-24 | 삼성에스디아이 주식회사 | Printed Circuit Board and Secondary Battery Using the Same |
| JP4462388B2 (en) * | 2007-12-20 | 2010-05-12 | 株式会社村田製作所 | Wireless IC device |
| CN103500875B (en) * | 2007-12-26 | 2015-12-02 | 株式会社村田制作所 | Antenna assembly and Wireless IC device |
| CN101953025A (en) * | 2008-04-14 | 2011-01-19 | 株式会社村田制作所 | Radio IC device, electronic device, and method for adjusting resonance frequency of radio IC device |
-
2011
- 2011-08-17 JP JP2011178463A patent/JP5709690B2/en not_active Expired - Fee Related
-
2012
- 2012-06-07 TW TW101210979U patent/TWM448806U/en not_active IP Right Cessation
- 2012-07-31 KR KR1020120083836A patent/KR20130020563A/en not_active Application Discontinuation
- 2012-08-17 CN CN201210293271.1A patent/CN102956991B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101404354A (en) * | 2007-10-03 | 2009-04-08 | 索尼株式会社 | Antenna substrate for non-contact communication apparatus and non-contact communication apparatus |
| WO2010066955A1 (en) * | 2008-12-11 | 2010-06-17 | Yves Eray | Rfid antenna circuit |
| WO2011002049A1 (en) * | 2009-07-03 | 2011-01-06 | 株式会社村田製作所 | Antenna and antenna module |
| WO2011001709A1 (en) * | 2009-07-03 | 2011-01-06 | 株式会社村田製作所 | Antenna and antenna module |
Also Published As
| Publication number | Publication date |
|---|---|
| TWM448806U (en) | 2013-03-11 |
| JP2013042391A (en) | 2013-02-28 |
| KR20130020563A (en) | 2013-02-27 |
| JP5709690B2 (en) | 2015-04-30 |
| CN102956991A (en) | 2013-03-06 |
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Granted publication date: 20161207 Termination date: 20210817 |
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| CF01 | Termination of patent right due to non-payment of annual fee |