CN101707284A - LTCC electrically small integrated antenna for radio-frequency front-end system - Google Patents
LTCC electrically small integrated antenna for radio-frequency front-end system Download PDFInfo
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- CN101707284A CN101707284A CN 200910246033 CN200910246033A CN101707284A CN 101707284 A CN101707284 A CN 101707284A CN 200910246033 CN200910246033 CN 200910246033 CN 200910246033 A CN200910246033 A CN 200910246033A CN 101707284 A CN101707284 A CN 101707284A
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Abstract
The invention discloses an LTCC electrically small integrated antenna for a radio-frequency front-end system, which belongs to the technical field of micro/millimeter wave communication and relates to antenna technology and LTCC technology. The antenna is manufactured by using an LTCC process and comprises a radiation part and a medium substrate, wherein the radiation part consists of a metal conduction band, a metal grounding region, four metal strips and four radiation elements. The metal conduction band and the four metal strips are positioned on one side of the medium substrate; and the metal grounding region and the four radiation elements are positioned on the other side of the medium substrate. The middle part of the metal conduction band has perpendicularly bent shape; and the linear parts at two ends of the metal conduction band are connected with two metal strips vertical to the metal conduction band respectively. The four radiation elements are four metal open-circuit current-loop resonators which are the same; and the positions, on the medium substrate, of the four radiation elements correspond to those of the four metal strips on the other side of the medium substrate. In the antenna, due to the adoption of the folded metal conduction band and the open-circuit current-loop resonators, the section is ultra low and the shape is extremely small; at the same time, due to the adoption of the LTCC process, the integration and packaging are convenient.
Description
Technical field
The invention belongs to the microwave and millimeter wave communication technical field, relate to antenna technology and LTCC (LTCC) technology, relate in particular to the omni-directional wideband electrically small integrated antenna that a kind of 5.8GHz frequency range is used for radio-frequency front-end system.
Background technology
Along with popularizing with applying of wireless PDA of notebook computer impelled developing rapidly of short-distance wireless access technology such as bluetooth and wireless local area network technology, and as the requisite parts-antenna of radio subsystem, also inevitablely develop to broadband, miniaturization, high efficiency direction.
In the prior art, often volume is bigger to be applied to the traditional antenna of 5.8GHz frequency range, is not easy to use and carry, and debugging is installed all very difficult.
In the past few years, LTCC (LTCC) technology is used for radio-frequency (RF) front-end circuit in a large number, but the Antenna Design and the making that are based on the LTCC technology are scarcely out of swaddling-clothes, only about the report and the patent application of simple meander configuration microstrip antenna and multiple-layered patches antenna, and also do not have at the report of the ultralow section of LTCC lamination omnidirectional micro-strip paster antenna.And the antenna size length of existing this frequency range is generally more than 15mm, and sectional thickness surpasses 2mm, is difficult to carry out system in package with other devices and forms modularization.
Summary of the invention
The objective of the invention is to overcome the shortcoming and defect of above-mentioned prior art,, provide a kind of broadband electrically small integrated antenna that is used for the integrated encapsulation of radio-frequency front-end system based on LTCC technology.
Technical solution of the present invention is as follows:
A kind of LTCC electrically small integrated antenna that is used for radio-frequency front-end system, shown in Fig. 1,2 and 3, adopt LTCC technology to make, comprise radiant section and dielectric substrate, described radiant section is made of a metal conduction band 4, a metal access area 1, four bonding jumpers 5 and four radiation elements 3.Described radiant section is distributed in the two sides of described medium substrate 2: one side is metal conduction band 4 and four bonding jumpers 5, and another side is metal access area 1 and four radiation elements 3.The rectangular bending shape of the mid portion of described metal conduction band 4 (shown in the icon among Fig. 3 6) makes it increase the electric current finite length in the confined space, thereby reaches near resonance 5.8GHz; The two ends straight line portion of described metal conduction band 4 connects two bonding jumpers 5 perpendicular to metal conduction band 4 respectively, and two bonding jumpers 5 that are positioned at metal conduction band 4 same side straight line portioies are that the center is symmetrical distribution with metal conduction band central axis.Described metal access area 1 is the rectangle bonding jumper, is positioned at the medium substrate edge and perpendicular to the two ends straight line portion of metal conduction band 4; Described four radiation elements 3 are four identical metal open-circuit current ring resonators, and the position of four bonding jumpers in four positions of radiation element 3 on dielectric substrate and dielectric substrate another sides is corresponding.
Broadband provided by the invention electrically small integrated antenna adopts coaxial feed, and feeder line comprises internal core wire and screen, and wherein internal core wire links to each other with metal conduction band 4, and screen links to each other with metal access area 1.
Compared to prior art, remarkable advantage of the present invention: adopt folded metal conduction band and open-circuit current ring resonator, change CURRENT DISTRIBUTION on the sheet, break through the size of traditional PCB antenna, have ultralow section and minimum profile.Adopt LTCC technology, enable to carry out the system integration and encapsulation with the specific function active circuit better, form modularization, become possibility thereby make it be used for portable set.In addition, the LTCC medium substrate can provide effective support to radiating element, prolongs the life-span of antenna.
Description of drawings
Fig. 1 is the STRUCTURE DECOMPOSITION schematic diagram that is used for the LTCC electrically small integrated antenna of radio-frequency front-end system provided by the invention.
Fig. 2 is the upward view that is used for the LTCC electrically small integrated antenna of radio-frequency front-end system provided by the invention.
Fig. 3 is the vertical view that is used for the LTCC electrically small integrated antenna of radio-frequency front-end system provided by the invention.
Fig. 4 is a kind of LTCC electrically small integrated antenna medium frequency of radio-frequency front-end system and relation between the reflection loss S11 of specifically being used for provided by the invention.
Fig. 5 is a kind of E face directional diagram that specifically is used for the LTCC electrically small integrated antenna of radio-frequency front-end system provided by the invention.
Fig. 6 is a kind of H face directional diagram that specifically is used for the LTCC electrically small integrated antenna of radio-frequency front-end system provided by the invention.
Embodiment
Below in conjunction with accompanying drawing the present invention is described in further detail.
As Fig. 1, Fig. 2 and the disclosed a kind of LTCC electrically small integrated antenna that is used for radio-frequency front-end system of Fig. 3, adopt LTCC technology to make, comprise radiant section and dielectric substrate, described radiant section is made of a metal conduction band 4, a metal access area 1, four bonding jumpers 5 and four radiation elements 3.Described radiant section is distributed in the two sides of described medium substrate 2: one side is metal conduction band 4 and four bonding jumpers 5, and another side is metal access area 1 and four radiation elements 3.The rectangular bending shape of the mid portion of described metal conduction band 4 (shown in the icon among Fig. 3 6) makes it increase the electric current finite length in the confined space, thereby reaches near resonance 5.8GHz; The two ends straight line portion of described metal conduction band 4 connects two bonding jumpers 5 perpendicular to metal conduction band 4 respectively, and two bonding jumpers 5 that are positioned at metal conduction band 4 same side straight line portioies are that the center is symmetrical distribution with metal conduction band central axis.Described metal access area 1 is the rectangle bonding jumper, is positioned at the medium substrate edge and perpendicular to the two ends straight line portion of metal conduction band 4; Described four radiation elements 3 are four identical metal open-circuit current ring resonators, and the position of four bonding jumpers in four positions of radiation element 3 on dielectric substrate and dielectric substrate another sides is corresponding.
By very ripe at present LTCC technology, produce a kind of concrete LTCC electrically small integrated antenna that is used for radio-frequency front-end system, wherein: metal access area 1 length is 7mm, and wide is 1mm; Dielectric substrate 2 long 8mm, wide 7mm, thick 0.8mm, the tape casting diaphragm lamination that to adopt 8 thickness be 0.1mm forms.
In below describing, all its thickness that relates to metal is 0.096mm, the sectional thickness of antenna is that the thickness that double layer of metal adds medium substrate is that four radiation elements of 0.992mm., 3 sizes are identical, and big or small ring all is that square and both opening directions are opposite, and the length of side of big ring is 1.5mm, little ring length of side 0.9mm, opening is 0.3mm, and the width of big or small ring all is 0.2mm, and the spacing between the big or small ring is 0.10mm. metal conduction band 4 long 7.6mm, wide 1.2mm, middle right angle bends 6 live width 1.6mm; Right angle bending 6 comprises two bendings, and overall dimension is 2.7mm along metal conduction band 4 long side directions, is 4.4mm. along metal conduction band 4 broadsides
Fig. 4 is the reflection coefficient S11 figure that is obtained by the emulation of 3 D electromagnetic simulation software, visible centre frequency f=5.76GHz, and reflection coefficient is-19.45dB.In the 5.45GHz-6.03GHz scope, voltage standing wave ratio VSWR＜3, bandwidth reaches 0.58GHz, and relative bandwidth is 10.1%.Fig. 4 and Fig. 5 are respectively the E face and the H side gains figure of antenna, are omnidirectional antennas in this antenna horizontal plane as seen from the figure, gain 0.8dBi, and directivity factor is 1.22, and radiation efficiency reaches 98%, and cross polarization obtains good restraining, less than-30dBi.
Claims (2)
1. a LTCC electrically small integrated antenna that is used for radio-frequency front-end system adopts LTCC technology to make, and comprises radiant section and dielectric substrate, it is characterized in that,
Described radiant section is made of a metal conduction band (4), a metal access area (1), four bonding jumpers (5) and four radiation elements (3);
Described radiant section is distributed in the two sides of described medium substrate (2): one side is metal conduction band (4) and four bonding jumpers (5), and another side is metal access area (1) and four radiation elements (3);
The rectangular bending shape of mid portion of described metal conduction band (4);
The two ends straight line portion of described metal conduction band (4) connects two bonding jumpers perpendicular to metal conduction band (4) (5) respectively, and two bonding jumpers (5) that are positioned at metal conduction band (4) same side straight line portion are that the center is symmetrical distribution with metal conduction band central axis;
Described metal access area (1) is the rectangle bonding jumper, is positioned at the medium substrate edge and perpendicular to the two ends straight line portion of metal conduction band (4);
Described four radiation elements (3) are four identical metal open-circuit current ring resonators, and the position of four radiation elements (3) on dielectric substrate is corresponding with the position of four bonding jumpers of dielectric substrate another side.
2. the LTCC electrically small integrated antenna that is used for radio-frequency front-end system according to claim 1 is characterized in that, metal access area (1) is long to be 4mm～7mm, and wide is 1mm～2mm; Dielectric substrate (2) is long to be 7mm～8mm, wide is 7mm～8mm, thick is 0.5mm～0.9mm, 1.4mm～2mm that the big ring length of side of four radiation elements (3) is, the little ring length of side is 0.7mm～0.9mm, big ring is identical with the extended distance of little ring, is 0.15mm～0.3mm, and the spacing of two rings is 0.1mm～0.3mm; The length of four bonding jumpers (5) is 4.5mm～6.5mm, width is 0.4mm～0.9mm, two bonding jumpers in bending part left side, metal conduction band (4) right angle are 5.8mm～6.5mm apart from the left hand edge distance of metal conduction band (4), and two bonding jumpers on bending part right side, metal conduction band (4) right angle are 1.6mm～1.9mm apart from the left hand edge distance of metal conduction band (4); Metal conduction band (4) is long to be 7.4mm～7.7mm, wide is 0.5mm～1.2mm, the live width of right angle bending (6) is 0.4mm～0.8mm, right angle bending (6) is of a size of 4mm～5mm along metal conduction band (4) long side direction, and right angle bending (6) is of a size of 2.5mm～3mm along metal conduction band (4) broadside; Dielectric substrate (2) is relative dielectric constant ε
rBe ceramic dielectric between 4～12.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 200910246033 CN101707284B (en) | 2009-11-20 | 2009-11-20 | LTCC electrically small integrated antenna for radio-frequency front-end system |
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| CN 200910246033 CN101707284B (en) | 2009-11-20 | 2009-11-20 | LTCC electrically small integrated antenna for radio-frequency front-end system |
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| CN101707284B CN101707284B (en) | 2013-01-09 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103066385A (en) * | 2012-12-22 | 2013-04-24 | 西安电子科技大学 | Low temperature co-fired ceramic (LTCC) double-layer microstrip antenna used for system-in-package |
| CN104953297A (en) * | 2015-07-14 | 2015-09-30 | 哈尔滨工业大学 | Electrically small triple-band multi-mode antenna |
| CN104617057B (en) * | 2013-11-05 | 2018-07-31 | 矽品精密工业股份有限公司 | Electronic package |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4793584B2 (en) * | 2007-01-10 | 2011-10-12 | 戸田工業株式会社 | A substrate with a magnetic antenna |
| CN101026259B (en) * | 2007-03-13 | 2010-12-29 | 华南理工大学 | Zigzag LTCC dual-band chip antenna |
| CN101118985B (en) * | 2007-07-20 | 2012-10-03 | 天津大学 | Low temperature cofired ceramic antenna and very high frequency RF identification tag antenna formed of the same |
| CN101237081B (en) * | 2008-01-18 | 2011-07-06 | 东南大学 | Multi-resistance band and ultra-broadband antenna realized by split ring resonancer coupling feedback antenna |
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2009
- 2009-11-20 CN CN 200910246033 patent/CN101707284B/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103066385A (en) * | 2012-12-22 | 2013-04-24 | 西安电子科技大学 | Low temperature co-fired ceramic (LTCC) double-layer microstrip antenna used for system-in-package |
| CN103066385B (en) * | 2012-12-22 | 2015-08-05 | 西安电子科技大学 | For the LTCC Two--Layer Microstrip Antenna of system in package |
| CN104617057B (en) * | 2013-11-05 | 2018-07-31 | 矽品精密工业股份有限公司 | Electronic package |
| CN104953297A (en) * | 2015-07-14 | 2015-09-30 | 哈尔滨工业大学 | Electrically small triple-band multi-mode antenna |
| CN104953297B (en) * | 2015-07-14 | 2017-11-03 | 哈尔滨工业大学 | The small three frequencies multimode antenna of electricity |
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Effective date of registration: 20210113 Address after: No.2006 Xiyuan Avenue, Chengdu, Sichuan 611731 Patentee after: University of Electronic Science and technology of Sichuan foundation for education development Address before: Room 402, area a, Liye building, science and Technology Park, China sensor network university, Taike Park, New District, Wuxi City, Jiangsu Province, 214135 Patentee before: WUXI UESTC TECHNOLOGY DEVELOPMENT Co.,Ltd. |