CN1812193B - Inverted-F antenna with double-branch, short-circuit structure - Google Patents
Inverted-F antenna with double-branch, short-circuit structure Download PDFInfo
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- CN1812193B CN1812193B CN 200510005760 CN200510005760A CN1812193B CN 1812193 B CN1812193 B CN 1812193B CN 200510005760 CN200510005760 CN 200510005760 CN 200510005760 A CN200510005760 A CN 200510005760A CN 1812193 B CN1812193 B CN 1812193B
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Abstract
This invention relates to a kind of inverse F type antenna with double braches short circuit structure. The antenna concludes: a main radiating metal sheet, a accessory radiating metal sheet, a ground connected face, a dielectric base, a double branches short circuit metal sheet and a feeding metal sheet. The main radiating metal sheet concludes a first sub-radiating metal sheet, a secondary sub-radiating metal sheet, a feeding point and a first short circuit point. The first sub-radiating metal sheet forms a long electric current path, which generates first (low-frequency) operation mode of the antenna. The secondary sub-radiating metal sheet forms a short electric current path, which generates second (high-frequency) operation mode of the antenna. The accessory radiating metal sheet is used for increasing the operating frequency band of second (high-frequency) operation mode of the antenna. The accessory radiating metal sheet concludes a secondary short circuit point. One end of thedouble branches short circuit metal sheet connects to the ground connected face, the other end has a double branches structure which connects to the first short circuit point of main radiating sheet and the secondary short circuit point of accessory radiating metal sheet respectively. One end connects to the feeding point of main radiating metal sheet, the other end to system signal source so as to transferring signal. This invention has multi-frequency ability. Its frequency band is defined that it can reach 90MHz and 300MHz respectively at low-frequency and high-frequency range. It can easily cover GSM 900/1800 and DCS three-frequency frequency band of mobile communication.
Description
Technical field
The present invention relates to a kind of inverted F shaped antenna (inverted-F antenna), particularly be applied to the antenna on the wireless communications products.
Background technology
Along with the fast development of wireless telecommunications in recent years, on the performance requirement of antenna, also improve gradually, except the downsizing that requires size, on antenna performance, also must possess characteristics such as multiband or big frequency range are arranged, just can accord with the demands of the market.And on outward appearance and practical convenience also gradually towards the design of the built-in antenna of miniaturization, and in order to reach the downsizing of size, and on antenna performance, still must keep the characteristic of multiband or wideband, can make the design of built-in antenna be tending towards complicated usually.Therefore how in limited environment and space, utilize effective antenna parameter to reach the required specification of product, become the important pointer of built-in antenna design.
Be applied to mobile communication equipment at present as mobile phone, the built-in antenna of products such as PDA(Personal Digital Assistant), usually adopt reversed F-typed Antenna Design, conventional inverted F shaped antenna design is as United States Patent (USP) the 6th, 727, No. 854 " reversed F-typed plate aerials " (Fig. 1), it discloses a kind of built-in antenna that is applied to mobile phone, the main radiation sheet metal part of its antenna, set out by load point 15 and short dot 16 and can roughly be divided into three current paths 10,13,14, utilize this difference path to inspire different resonance frequencys, the synthetic dual frequency operation that meets the GSM/DCS bandwidth requirements; The design of this type of inverted F shaped antenna only has the short-circuiting jumper of single branch road usually, and its structure is comparatively complicated, and current path wriggles more, causes that its frequency range is narrower only can reach dual frequency operation, and in practical application antenna characteristics to adjust difficulty higher.For solving this problem, a kind of inverted F shaped antenna innovative design with double-branch, short-circuit sheet metal structure is proposed in the present invention, utilize this double-branch, short-circuit sheet metal, can be connected to a primary radiation sheet metal and a collateral radiation sheet metal respectively, wherein this primary radiation sheet metal can produce one first (low frequency) and one second (high frequency) resonance mode, this collateral radiation sheet metal then can produce an electromagnetic coupled resonance mode, can effectively increase the impedance frequency range of this second (high frequency) resonance mode, and reach the Antenna Design of multifrequency or wideband, and utilize the branch road length and the width of this double-branch, short-circuit sheet metal, can adjust the input impedance of this antenna, to reach good impedance matching.Therefore antenna of the present invention can reach the band system band demand of wideband or multifrequency under the situation that does not increase the antenna overall complexity, is the innovative design that has the industry using value.
Summary of the invention
As mentioned above, the object of the present invention is to provide a kind of innovative design, can effectively increase the impedance frequency range of antenna, to reach the band system band demand of wideband or multifrequency with inverted F shaped antenna of double-branch, short-circuit structure.Antenna of the present invention comprises: a primary radiation sheet metal, a collateral radiation sheet metal, a ground plane, a medium substrate, a double-branch, short-circuit sheet metal and a feed-in sheet metal; Wherein, this primary radiation sheet metal comprises one first sub-radiation sheet metal, one second sub-radiation sheet metal, a load point and one first short dot, wherein this first sub-radiation sheet metal forms long current path, in order to produce first (low frequency) operator scheme of this antenna, this second sub-radiation sheet metal then forms short current path, in order to produce second (high frequency) operator scheme of this antenna; One collateral radiation sheet metal, in order to the operation frequency range of second (high frequency) operator scheme of increasing this antenna, this collateral radiation sheet metal comprises one second short dot; One ground plane; One end of this double-branch, short-circuit sheet metal is connected with this ground plane, the other end then has a pair of and props up line structure, be respectively first branch road and second branch road, wherein this first branch road is connected with this first short dot of this primary radiation sheet metal, this second branch road then is connected and a feed-in sheet metal with this second short dot of this collateral radiation sheet metal, the one end is connected with this load point of this primary radiation sheet metal, and the other end then is connected to the system signal source, in order to transmission signals.
In the present invention, this primary radiation sheet metal is used for producing first (low frequency) and second (high frequency) operator scheme of this antenna, this collateral radiation sheet metal then can produce an electromagnetic coupled pattern, suitably adjust the path and the width of this collateral radiation sheet metal, can make this electromagnetic coupled pattern and this second (high frequency) operator scheme be combined into the operator scheme of a wideband, can effectively increase the frequency range of high frequency band, and this first and second branch road of this double-branch, short-circuit sheet metal, then can be used for adjusting the input impedance of this primary radiation sheet metal and this collateral radiation sheet metal, length and width via this two branch road of suitable adjustment, can obtain good impedance matching, the present invention can set the impedance frequency range in 3.5: under the definition of 1VSWR, 90MHz and 300MHz can be reached respectively in low frequency and high frequency, mobile communication GSM/DCS/PCS three bandwidth requirements of system frequently can be met.
Description of drawings
Fig. 1 is the structure chart of conventional inverted F shaped antenna one embodiment;
Fig. 2 is the structure chart of antenna one embodiment of the present invention;
Fig. 3 returns the loss experimental result for antenna one embodiment's of the present invention;
Fig. 4 is another example structure figure of antenna of the present invention;
The 5th figure is the another example structure figure of antenna of the present invention.
Embodiment
Be illustrated in figure 2 as the embodiment 2 with inverted F shaped antenna of double-branch, short-circuit structure of the present invention, this antenna comprises: a primary radiation sheet metal 20, a collateral radiation sheet metal 23, a ground plane 24, a medium substrate 25, a double-branch, short-circuit sheet metal 26 and a feed-in sheet metal 27; Wherein, this primary radiation sheet metal 20 comprises one first sub-radiation sheet metal 201, one second sub-radiation sheet metal 202, a load point 203 and one first short dot 204, wherein this load point 203 and this first short dot 204 are positioned on the identical edge of this primary radiation sheet metal, and this first sub-radiation sheet metal 201 forms long current path, in order to produce first (low frequency) operator scheme of this antenna, 202 of this second sub-radiation sheet metals form short current path, in order to produce second (high frequency) operator scheme of this antenna; This collateral radiation sheet metal 23 can produce an electromagnetic coupled pattern, suitably adjust the path and the width of this collateral radiation sheet metal 23, can make this electromagnetic coupled pattern and this second (high frequency) operator scheme be combined into the operator scheme of a wideband, can increase the operation frequency range of second (high frequency) operator scheme of this antenna, this collateral radiation sheet metal 23 comprises one second short dot 231; One end of this double-branch, short-circuit sheet metal 26 is connected with this ground plane 24, the other end then has a pair of and props up line structure, be respectively first branch road 261 and second branch road 262, this pair branch road is positioned on the same surface of this medium substrate 25, wherein this first branch road 261 is connected with this first short dot 204 of this primary radiation sheet metal 20, this second branch road 262 then is connected with this second short dot 231 of this collateral radiation sheet metal 23, the one 261 and second branch road 262, can be used for adjusting the input impedance of this primary radiation sheet metal 20 and this collateral radiation sheet metal 23, length and width via this two branch road of suitable adjustment, can make the antenna operation pattern obtain good impedance matching, one end of this feed-in sheet metal 27 is connected with this load point 203 of this primary radiation sheet metal 20, the other end then is connected to the system signal source, in order to transmission signals.
Fig. 3 returns the loss experimental result for an embodiment's 2 of antenna of the present invention; Curve 31 is first (low frequency) operator scheme of this antenna among the figure, 32 of curves are second (high frequency) operator scheme of this antenna, the impedance frequency range of this two operator scheme that can be obtained this embodiment by experimental result is in 3.5: 1VSWR (voltage standing wave ratio) definition down, can reach 90MHz and 300MHz, can satisfy mobile phone GSM (880～960MHz), DCS (1710～1880MHz) and the PCS (bandwidth requirements of 1850～1990MHz) systems.
Be illustrated in figure 4 as another embodiment 4 with inverted F shaped antenna of double-branch, short-circuit structure of the present invention, this antenna comprises: a primary radiation sheet metal 40, a collateral radiation sheet metal 43, a ground plane 44, a medium substrate 45, a double-branch, short-circuit sheet metal 46 and a feed-in sheet metal 47; Wherein, this primary radiation sheet metal 40 comprises one first sub-radiation sheet metal 401, one second sub-radiation sheet metal 402, a load point 403 and one first short dot 404, wherein this load point 403 and this first short dot 404 are positioned on the different edge of this primary radiation sheet metal 40, and this first sub-radiation sheet metal 401 forms long current path, in order to produce first (low frequency) operator scheme of this antenna, 402 of this second sub-radiation sheet metals form short current path, in order to produce second (high frequency) operator scheme of this antenna; This collateral radiation sheet metal 43 can produce an electromagnetic coupled pattern, suitably adjust the path and the width of this collateral radiation sheet metal 43, can make this electromagnetic coupled pattern and this second (high frequency) operator scheme be combined into the operator scheme of a wideband, can increase the operation frequency range of second (high frequency) operator scheme of this antenna, this collateral radiation sheet metal 43 comprises one second short dot 431; One end of this double-branch, short-circuit sheet metal 46 is connected with this ground plane 44, the other end then has a pair of and props up line structure, be respectively first branch road 461 and second branch road 462, this pair branch road is positioned on the same surface of this medium substrate 45, wherein this first branch road 461 is connected with this first short dot 404 of this primary radiation sheet metal 40, this second branch road 462 then is connected with this second short dot 431 of this collateral radiation sheet metal 43, the one 461 and second branch road 462, can be used for adjusting the input impedance of this primary radiation sheet metal 40 and this collateral radiation sheet metal 43, length and width via this two branch road of suitable adjustment, can make the antenna operation pattern obtain good impedance matching, one end of this feed-in sheet metal 47 is connected with this load point 403 of this primary radiation sheet metal 40, the other end then is connected to the system signal source, in order to transmission signals.Difference is the shape of the desired location of load point 403 and second branch road 462, collateral radiation sheet metal 43 on present embodiment 4 and embodiment 3 structures.
Be illustrated in figure 5 as the another embodiment 5 with inverted F shaped antenna of double-branch, short-circuit structure of the present invention, this antenna comprises: a primary radiation sheet metal 50, a collateral radiation sheet metal 53, a ground plane 54, a medium substrate 55, a double-branch, short-circuit sheet metal 56 and a feed-in sheet metal 57; Wherein, this primary radiation sheet metal 50 comprises one first sub-radiation sheet metal 501, one second sub-radiation sheet metal 502, one load point 503 and one first short dot 504, wherein this load point 503 is positioned on the edge of this primary radiation sheet metal 50, this first short dot 504 then is positioned at the inside of this primary radiation sheet metal 50, and this first sub-radiation sheet metal 501 forms long current path, in order to produce first (low frequency) operator scheme of this antenna, 502 of this second sub-radiation sheet metals form short current path, in order to produce second (high frequency) operator scheme of this antenna; This collateral radiation sheet metal 53 can produce an electromagnetic coupled pattern, suitably adjust the path and the width of this collateral radiation sheet metal 53, can make this electromagnetic coupled pattern and this second (high frequency) operator scheme be combined into the operator scheme of a wideband, can increase the operation frequency range of second (high frequency) operator scheme of this antenna, this collateral radiation sheet metal 53 comprises one second short dot 531; One end of this double-branch, short-circuit sheet metal 56 is connected with this ground plane 54, the other end then has a pair of and props up line structure, be respectively first branch road 561 and second branch road 562, this pair branch road is positioned on the different surfaces of this medium substrate 55, wherein this first branch road 561 is connected with this first short dot 504 of this primary radiation sheet metal 50, this second branch road 562 then is connected with this second short dot 531 of this collateral radiation sheet metal 53, the one 561 and second branch road 562, can be used for adjusting the input impedance of this primary radiation sheet metal 50 and this collateral radiation sheet metal 53, length and width via this two branch road of suitable adjustment, can make the antenna operation pattern obtain good impedance matching, one end of this feed-in sheet metal 57 is connected with this load point 503 of this primary radiation sheet metal 50, the other end then is connected to the system signal source, in order to transmission signals.Difference is that the set positions of first short dot 504 is in the inside of this primary radiation sheet metal 50, the desired location of second short dot 531 and the shape of collateral radiation sheet metal 53 on present embodiment 5 and embodiment 3 structures.
Only be explanation principle of the present invention and effect thereof at the embodiment described in the present invention's explanation, and unrestricted the present invention.Therefore, those skilled in the art can make amendment to the foregoing description without prejudice to spirit of the present invention and change.Interest field of the present invention claims as described later is listed.
Claims (6)
1. inverted F shaped antenna with double-branch, short-circuit structure comprises:
One primary radiation sheet metal, this primary radiation sheet metal comprises one first sub-radiation sheet metal, one second sub-radiation sheet metal, a load point and one first short dot, wherein this first sub-radiation sheet metal forms long current path, in order to produce the first low frequency operator scheme of this antenna, this second sub-radiation sheet metal then forms short current path, in order to produce the second high-frequency operation pattern of this antenna;
One collateral radiation sheet metal, in order to the operation frequency range of the second high-frequency operation pattern that increases this antenna, this collateral radiation sheet metal comprises one second short dot;
One ground plane;
One medium substrate;
One double-branch, short-circuit sheet metal, one end of this double-branch, short-circuit sheet metal is connected with this ground plane, the other end then has a pair of and props up line structure, be respectively first branch road and second branch road, wherein this first branch road is connected with this first short dot of this primary radiation sheet metal, and this second branch road then is connected with this second short dot of this collateral radiation sheet metal; And
One feed-in sheet metal, the one end is connected with this load point of this primary radiation sheet metal, and the other end then is connected to the system signal source, in order to transmission signals.
2. the inverted F shaped antenna with double-branch, short-circuit structure as claimed in claim 1, wherein, this load point is positioned on the identical edge of this primary radiation sheet metal with this first short dot.
3. the inverted F shaped antenna with double-branch, short-circuit structure as claimed in claim 1, wherein, this load point is positioned on the different edge of this primary radiation sheet metal with this first short dot.
4. the inverted F shaped antenna with double-branch, short-circuit structure as claimed in claim 1, wherein, this load point and this first short dot are positioned at the inside of this primary radiation sheet metal.
5. the inverted F shaped antenna with double-branch, short-circuit structure as claimed in claim 1, wherein, two branch roads of this double-branch, short-circuit sheet metal are positioned on the same surface of this medium substrate.
6. the inverted F shaped antenna with double-branch, short-circuit structure as claimed in claim 1, wherein, two branch roads of this double-branch, short-circuit sheet metal lay respectively on the end face and side of this medium substrate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510005760 CN1812193B (en) | 2005-01-25 | 2005-01-25 | Inverted-F antenna with double-branch, short-circuit structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510005760 CN1812193B (en) | 2005-01-25 | 2005-01-25 | Inverted-F antenna with double-branch, short-circuit structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1812193A CN1812193A (en) | 2006-08-02 |
| CN1812193B true CN1812193B (en) | 2011-01-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 200510005760 Expired - Fee Related CN1812193B (en) | 2005-01-25 | 2005-01-25 | Inverted-F antenna with double-branch, short-circuit structure |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101335375B (en) * | 2007-06-26 | 2013-01-16 | 启碁科技股份有限公司 | Three-frequency antenna and electronic apparatus applying the same |
| FI120427B (en) * | 2007-08-30 | 2009-10-15 | Pulse Finland Oy | Adjustable multiband antenna |
| CN101459272B (en) * | 2007-12-14 | 2013-04-24 | 国巨股份有限公司 | Integrated antenna used for global microwave access mutual operability and wireless LAN |
| CN101471484B (en) * | 2007-12-27 | 2012-07-18 | 耀登科技股份有限公司 | Multi-frequency antenna |
| CN101740861B (en) * | 2008-11-27 | 2013-10-09 | 启碁科技股份有限公司 | Broadband antenna and electronic device with broadband antenna |
| CN103682638B (en) * | 2012-09-17 | 2016-10-05 | 智易科技股份有限公司 | There is antenna structure and the manufacture method thereof of three operational frequency bands |
| CN113964501A (en) * | 2021-11-22 | 2022-01-21 | 江西创新科技有限公司 | Novel 5G communication antenna |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001033665A1 (en) * | 1999-11-04 | 2001-05-10 | Rangestar Wireless, Inc. | Single or dual band parasitic antenna assembly |
| US20030052824A1 (en) * | 2001-09-14 | 2003-03-20 | Nokia Mobile Phones Ltd. | Internal multi-band antenna with improved radiation efficiency |
| WO2004038856A1 (en) * | 2002-10-22 | 2004-05-06 | Sony Ericsson Mobile Communications Ab | Multiband radio antenna |
-
2005
- 2005-01-25 CN CN 200510005760 patent/CN1812193B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001033665A1 (en) * | 1999-11-04 | 2001-05-10 | Rangestar Wireless, Inc. | Single or dual band parasitic antenna assembly |
| US20030052824A1 (en) * | 2001-09-14 | 2003-03-20 | Nokia Mobile Phones Ltd. | Internal multi-band antenna with improved radiation efficiency |
| WO2004038856A1 (en) * | 2002-10-22 | 2004-05-06 | Sony Ericsson Mobile Communications Ab | Multiband radio antenna |
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| CN1812193A (en) | 2006-08-02 |
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Owner name: LIANZHAN SCIENCE ELECTRONIC ( KUNSHAN ) CO., LTD. Free format text: FORMER OWNER: VIEWTRAN (SHENZHEN) INC. Effective date: 20070720 |
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