CN102738579A - Small-sized ceramic antenna - Google Patents
Small-sized ceramic antenna Download PDFInfo
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- CN102738579A CN102738579A CN2012102392200A CN201210239220A CN102738579A CN 102738579 A CN102738579 A CN 102738579A CN 2012102392200 A CN2012102392200 A CN 2012102392200A CN 201210239220 A CN201210239220 A CN 201210239220A CN 102738579 A CN102738579 A CN 102738579A
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Abstract
The invention discloses a small-sized ceramic antenna. The small-sized ceramic antenna comprises a ceramic block 1 with a dielectric constant within a range of 30-100, and two metal electrodes 11 printed on the bottom surface of the ceramic block 1, wherein one metal electrode is connected with a feed power supply and the other metal electrode is connected with a grounding surface of a circuit printed board 2 through a frequency modulation device 3; and the ceramic block 1 is in a square structure; and the length of the ceramic block is 5-20mm, the width of the ceramic block is 2-10mm and the height of the ceramic block is 2-10mm.
Description
Technical field
The present invention relates to the communications field, particularly a kind of small-sized ceramic antenna.
Background technology
In recent years, the wireless communication technology fast development is widely used in mobile terminal devices such as mobile phone, notebook computer, bluetooth earphone, wireless mouse, Wireless Keyboard.For the ease of carrying, the demand of the low section miniaturization of electronic product also just becomes the main flow in market.Ceramic antenna commonly used at present mainly is a metal antenna, comprises inverted F shaped antenna or one pole subtype antenna.The technology that is adopted is the complicated radiation pattern of printing on ceramic block normally, perhaps adopts LTCC (LTCC) technology printing multiple layer metal pattern, complex process, and need to consume a large amount of metals.And traditional DRA (dielectric resonator antenna) general size is bigger, and the very difficult adjustment of resonance frequency, is difficult to be applied on the wireless terminal.
Summary of the invention
The objective of the invention is: a kind of small-sized ceramic antenna based on DRA is provided, need not printing or a small amount of type metal pattern, simple in structure, radiation efficiency is high, and is easy to adjust resonance frequency.
In order to achieve the above object: the invention provides a kind of small-sized ceramic antenna.Said small-sized ceramic antenna comprises: dielectric constant in 30 to 100 scopes ceramic block 1 and be printed on two metal electrodes 11 of ceramic block 1 bottom surface; One of them metal electrode is connected with the feed power supply, and the another one metal electrode is connected with printed circuit board (PCB) 2 ground planes through frequency modulation device 3; Said ceramic block 1 is a square structure, and length is 5mm to 20mm, and width is 2mm to 10mm, highly is 2mm to 10mm.
The all or part of side metal pattern 13 that is printed with in the side of said ceramic block 1.
The summit portion of said ceramic block 1 is printed with end face metal pattern 12.
Beneficial effect: this ceramic antenna comprises the low ceramic block of high conformity loss, bottom-side electrodes (end face and side can type metal pattern also can not print).Metal electrode is used for this antenna is welded to printed circuit board (PCB), and metal pattern is used to guide the radiation efficiency that electromagnetic field comes enhance antenna.Antenna size of the present invention is little, and radiation efficiency is high, and the adjustment resonance frequency is convenient.
Description of drawings
Fig. 1 is the small-sized ceramic antenna of the present invention and printed circuit board (PCB), frequency modulation device annexation vertical view.
Fig. 2 is the small-sized ceramic antenna of the present invention and printed circuit board (PCB), frequency modulation device annexation three-dimensional view.
Fig. 3 is the ceramic block stereogram of the small-sized ceramic antenna of the present invention.
Fig. 4 is the ceramic block front view of the small-sized ceramic antenna of the present invention.
Fig. 5 is the ceramic block upward view of the small-sized ceramic antenna of the present invention.
Fig. 6 is the ceramic block vertical view of the small-sized ceramic antenna of the present invention.
Fig. 7 is the ceramic block end view of the small-sized ceramic antenna of the present invention.
When Fig. 8 is respectively 2.6nH and 2.3pF for antenna frequency modulation device, the curve chart of antenna resonant frequency.
Fig. 9 highly is respectively H=4mm respectively for antenna, H=3mm, and during H=2.5mm, the resonance frequency curve chart of antenna.
Figure 10 highly is respectively H=4mm respectively for antenna, H=3mm, and during H=2.5mm, the curve chart of aerial radiation characteristic.
Figure 11 is respectively D=4mm for antenna side metal pattern length, D=2mm, and during D=0mm, the antenna resonant frequency curve chart.
Figure 12 is respectively D=4mm for antenna side metal pattern length, D=2mm, and during D=0mm, the aerial radiation performance diagram.
Figure 13 is respectively W=3mm for antenna end face metal pattern length, during W=0mm, and the antenna resonant frequency curve chart.
Figure 14 is respectively W=3mm for antenna end face metal pattern length, during W=0mm, and the aerial radiation performance diagram.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is elaborated.
Fig. 3 to Fig. 7 is a ceramic antenna structure sketch map in the embodiment of the invention.Ceramic antenna comprises the ceramic block that the high conformity loss is low, and the metal electrode 11 of bottom surface, end face metal pattern 12 and side metal pattern 13.Wherein side metal pattern 13 makes electromagnetic field in the ceramic block more near the end face of ceramic block and away from the ground plane of galley, making increases to extraradial electromagnetic wave, has increased the radiation efficiency of antenna in this invention.
Ceramic antenna is connected with printed circuit board (PCB) 2 through the bottom surface electric metal utmost point 11, and one of them electrode is connected with the feed power supply, and the another one electrode is connected with printed circuit board (PCB) 2 ground planes through frequency modulation device 3, like Fig. 1 and shown in Figure 2.
Below with reference to accompanying drawing 8 to Figure 14 practical embodiments of the present invention is described, is used to explain the characteristic of the present invention when different parameters.
Fig. 8 is an antenna frequency modulation device when being respectively 2.6nH and 2.3pF, the curve chart of antenna resonant frequency.Have this to find out, the scope that the applying FM device is adjusted frequency is very big, so this invention antenna both can be applied to GPS (global positioning system), can be applied to Bluetooth system and wireless local area network (WLAN) system again.
Fig. 9 and Figure 10 are that antenna highly is respectively H=4mm respectively, H=3mm, and during H=2.5mm, the resonance frequency of antenna and the curve chart of radiation characteristic.Be not difficult to find out through figure, when the antenna height not simultaneously, make resonance frequency consistent through adjustment frequency modulation device, antenna height is high more, the radiation efficiency of antenna is big more, communication efficiency is good more.Because when antenna is high more, printed circuit board (PCB) is more little to the constraint of the electromagnetic field around the antenna, and the radiation efficiency of antenna is big more.
Figure 11 and Figure 12 are that antenna side metal pattern length is respectively D=4mm, D=2mm, and during D=0mm, the curve chart of antenna resonant frequency and radiation characteristic.As can be seen from the figure, when the side metal pattern length not simultaneously, the value through adjustment frequency modulation device makes antenna resonant frequency consistent.Metal pattern length D is long more, and antenna radiation efficiency is big more, and the respective communication effect is good more.Vibrate in ceramic block because the metal pattern of two sides of antenna can be guided electromagnetic field, metal pattern is long more, and the electromagnetic field in the ceramic block is more near the end face of ceramic block and away from the ground plane of galley, antenna radiation efficiency is big more.
Figure 13 and Figure 14 are that antenna end face metal pattern length is respectively W=3mm, during W=0mm, and the curve chart of antenna resonant frequency and radiation characteristic.As can be seen from the figure, when end face did not have metal pattern (W=0mm), the radiation efficiency of antenna was bigger.Because when end face has metal pattern, can tail off to extraradial electromagnetic field, corresponding radiation efficiency has just diminished.
Above content is to combine optimal technical scheme to the further explain that the present invention did, and can not assert that the practical implementation of invention only limits to these explanations.Under the present invention, the those of ordinary skill of technical field, under the prerequisite that does not break away from design of the present invention, simple deduction and replacement can also be made, all protection scope of the present invention should be regarded as.
Claims (3)
1. small-sized ceramic antenna; It is characterized in that; Said small-sized ceramic antenna comprises: dielectric constant in 30 to 100 scopes ceramic block (1) and be printed on two metal electrodes (11) of ceramic block (1) bottom surface; One of them metal electrode is connected with the feed power supply, and the another one metal electrode is connected with printed circuit board (PCB) (2) ground plane through frequency modulation device (3); Said ceramic block (1) is a square structure, and length is 5mm to 20mm, and width is 2mm to 10mm, highly is 2mm to 10mm.
2. small-sized ceramic antenna according to claim 1 is characterized in that, all or part of side metal pattern (13) that is printed with in the side of said ceramic block (1).
3. small-sized ceramic antenna according to claim 1 and 2 is characterized in that, the summit portion of said ceramic block (1) is printed with end face metal pattern (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102392200A CN102738579A (en) | 2012-07-12 | 2012-07-12 | Small-sized ceramic antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102392200A CN102738579A (en) | 2012-07-12 | 2012-07-12 | Small-sized ceramic antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102738579A true CN102738579A (en) | 2012-10-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012102392200A Pending CN102738579A (en) | 2012-07-12 | 2012-07-12 | Small-sized ceramic antenna |
Country Status (1)
| Country | Link |
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| CN (1) | CN102738579A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105680170A (en) * | 2016-02-01 | 2016-06-15 | 广东风华高新科技股份有限公司 | Ltcc antenna |
| US10109922B2 (en) | 2015-09-30 | 2018-10-23 | Microsoft Technology Licensing, Llc | Capacitive-fed monopole antenna |
| CN109687112A (en) * | 2019-01-22 | 2019-04-26 | 南通大学 | A kind of miniaturization dielectric patch antenna |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0982799A2 (en) * | 1998-08-17 | 2000-03-01 | Philips Corporate Intellectual Property GmbH | Dielectric resonator antenna |
| CN1495967A (en) * | 2002-09-09 | 2004-05-12 | ��ķɭ���ó��˾ | Medium resonator antenna |
| CN101399397A (en) * | 2007-09-26 | 2009-04-01 | Tdk株式会社 | Antenna apparatus and method for adjusting characteristics thereof |
| CN201975506U (en) * | 2010-12-17 | 2011-09-14 | Tdk大连电子有限公司 | Small-sized ultra-thin Bluetooth ceramic antenna |
| CN202712420U (en) * | 2012-07-12 | 2013-01-30 | Tdk大连电子有限公司 | Small-sized ceramic antenna |
-
2012
- 2012-07-12 CN CN2012102392200A patent/CN102738579A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0982799A2 (en) * | 1998-08-17 | 2000-03-01 | Philips Corporate Intellectual Property GmbH | Dielectric resonator antenna |
| CN1495967A (en) * | 2002-09-09 | 2004-05-12 | ��ķɭ���ó��˾ | Medium resonator antenna |
| CN101399397A (en) * | 2007-09-26 | 2009-04-01 | Tdk株式会社 | Antenna apparatus and method for adjusting characteristics thereof |
| CN201975506U (en) * | 2010-12-17 | 2011-09-14 | Tdk大连电子有限公司 | Small-sized ultra-thin Bluetooth ceramic antenna |
| CN202712420U (en) * | 2012-07-12 | 2013-01-30 | Tdk大连电子有限公司 | Small-sized ceramic antenna |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10109922B2 (en) | 2015-09-30 | 2018-10-23 | Microsoft Technology Licensing, Llc | Capacitive-fed monopole antenna |
| CN105680170A (en) * | 2016-02-01 | 2016-06-15 | 广东风华高新科技股份有限公司 | Ltcc antenna |
| CN109687112A (en) * | 2019-01-22 | 2019-04-26 | 南通大学 | A kind of miniaturization dielectric patch antenna |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C05 | Deemed withdrawal (patent law before 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20121017 |