CN102347526B - Double-frequency antenna - Google Patents
Double-frequency antenna Download PDFInfo
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- CN102347526B CN102347526B CN201010246157.4A CN201010246157A CN102347526B CN 102347526 B CN102347526 B CN 102347526B CN 201010246157 A CN201010246157 A CN 201010246157A CN 102347526 B CN102347526 B CN 102347526B
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- radiation
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- band antenna
- microstrip line
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Abstract
The invention provides a double-frequency antenna. The double-frequency antenna comprises a feed part, a radiating body and a grounding part which are arranged on the first surface of a substrate, wherein the feed part is used for feeding an electromagnetic wave signal; the radiating body is connected with the feed part, is used for radiating the electromagnetic wave signal and comprises an inverted F-shaped radiating part, a C-shaped radiating part and a parasitic microstrip line; the inverted F-shaped radiating part comprises a first radiating part and a second radiating part which are mutually parallel as well as a third radiating part which is vertically connected with the first radiating part and the second radiating part; the third radiating part comprises a closed section and an opening section; the C-shaped radiating part is connected with the opening section of the third radiating section, and the opening of the C-shaped radiating part faces to the second radiating part; the parasitic microstrip line is of a strip shape and is vertically connected with the second radiating part; and the grounding part is connected with the radiating body. The double-frequency antenna can cover two frequency bands.
Description
Technical field
The present invention relates to antenna, relate in particular to a kind of dual-band antenna.
Background technology
For various criterion, application has different band limits to wireless communication field, wherein, micro-wave access global inter communication (World Interoperability for Microwave Access, WiMAX) frequency range that standard covers has 2.3GHz～2.4GHz, 2.496GHz～2.690GHz and 3.3GHz～3.8GHz, the frequency range that WiMAX (Wireless Fidelity, Wi-Fi) standard covers has 2.412GHZ～2.472GHZ and 5.170GHz～5.825GHz.The frequency that aerial radiation in the prior art goes out is often merely able to cover some single frequency band, if realize multiband, covers, and just must cover a plurality of frequency ranges with the different antenna of various structures.In Wireless Telecom Equipment, the occupied area of antenna just certainly will increase like this, does not meet the development trend of current Wireless Telecom Equipment miniaturization.So, how to meet under the band limits of different wireless communication standard, with less area, designing microstrip antenna is a major challenge, is also that current industry is badly in need of improved target.
Summary of the invention
In view of this, need to provide a kind of antenna, to realize multiband, cover.
The dual-band antenna that embodiment of the present invention provides, is arranged on substrate, and described dual-band antenna comprises feeding portion, radiant body and grounding parts, and wherein, described radiant body comprises inverted-F Department of Radiation, C shape Department of Radiation and parasitic microstrip line.Feeding portion is arranged at the first surface of described substrate, for feed-in electromagnetic wave signal.Radiant body is connected with described feeding portion, is arranged at the first surface of described substrate, for radiated electromagnetic wave signal.Inverted-F Department of Radiation comprise the first Department of Radiation of being parallel to each other, the second Department of Radiation and with equal vertical the 3rd Department of Radiation being connected of described the first Department of Radiation and described the second Department of Radiation, described the 3rd Department of Radiation comprises closed section and open segment.C shape Department of Radiation is connected with the described open segment of described the 3rd Department of Radiation, and opening is towards described the second Department of Radiation.Parasitic microstrip line is elongated, with described vertical being connected of the second Department of Radiation.Grounding parts is arranged at the first surface of described substrate, and is connected with described radiant body, and wherein, the described open segment of described the second Department of Radiation, described the 3rd Department of Radiation, described C shape Department of Radiation and described parasitic microstrip line jointly surround and form inverted-F headroom district.
Preferably, described the 3rd Department of Radiation is described closed section between described the first Department of Radiation and described the second Department of Radiation, from described closed section, to the direction away from described the second Department of Radiation, extends to described open segment.
Preferably, the width of the described open segment of described the 3rd Department of Radiation is greater than the width of described closed section.
Preferably, described parasitic microstrip line is parallel with described the 3rd Department of Radiation.
Preferably, described parasitic microstrip line extends to described the first Department of Radiation, and forms gap between the two.
Preferably, the other end of described parasitic microstrip line extends to described C shape Department of Radiation, and forms gap between the two.
Preferably, described C shape Department of Radiation comprises the 5th Department of Radiation, the 6th Department of Radiation and the 7th Department of Radiation, and wherein, described the 5th Department of Radiation and described the 6th Department of Radiation are parallel to each other, described the 7th Department of Radiation is with the described the 5th Department of Radiation is vertical is connected, and the other end is with the described the 6th Department of Radiation is vertical is connected.
Preferably, described the 5th Department of Radiation is connected with the described open segment of described the 3rd Department of Radiation, and is parallel to each other between described the 5th Department of Radiation, described the 6th Department of Radiation and described parasitic microstrip line.
Preferably, described feeding portion is square, and is electrical connected with described the 3rd Department of Radiation.
The mode that above-mentioned dual-band antenna adopts inverted-F Department of Radiation, C shape Department of Radiation and strip Department of Radiation to combine, can cover a plurality of frequency ranges, meets the demand of different user.
Accompanying drawing explanation
Fig. 1 is the overall schematic of dual-band antenna 100 in an embodiment of the present invention.
Fig. 2 is the local enlarged diagram of dual-band antenna 100 in an embodiment of the present invention
Fig. 3 and Fig. 4 are the dimensional drawing of dual-band antenna 100 in an embodiment of the present invention.
Fig. 5 is the return loss resolution chart of dual-band antenna 100 in an embodiment of the present invention
Main element symbol description
Dual-band antenna 100
Radiant body 20
Inverted-F Department of Radiation 200
The first Department of Radiation 201
The second Department of Radiation 202
The 3rd Department of Radiation 203
Closed section 203a
Space 204at204b
C shape Department of Radiation 300
The 5th Department of Radiation 205
The 6th Department of Radiation 206
The 7th Department of Radiation 207
Embodiment
Refer to Fig. 1, be depicted as the overall schematic of dual-band antenna 100 in an embodiment of the present invention.In the present embodiment, dual-band antenna 100 is arranged on substrate, comprises feeding portion 10, radiant body 20 and grounding parts 30.Feeding portion 10 is square, is arranged at the first surface of substrate, for feed-in electromagnetic wave signal.
Refer to Fig. 2, be depicted as the local enlarged diagram of dual-band antenna 100 in an embodiment of the present invention.In the present embodiment, radiant body 20 is connected with feeding portion 10, is arranged at the first surface of substrate, for radiated electromagnetic wave signal, comprises inverted-F Department of Radiation 200, C shape Department of Radiation 300 and parasitic microstrip line 204.
Inverted-F Department of Radiation 200 comprise the first Department of Radiation 201 of being parallel to each other, the second Department of Radiation 202 and with equal vertical the 3rd Department of Radiation 203 being connected of the first Department of Radiation 201 and the second Department of Radiation 202.The 3rd Department of Radiation 203 comprises closed section 203a and open segment 203b, and closed section 203a, between the first Department of Radiation 201 and the second Department of Radiation 202, extends to open segment 203b from closed section 203a to the direction away from the second Department of Radiation 202.In the present embodiment, the width of the open segment 203b of the 3rd Department of Radiation 203 is greater than the width of closed section 203a, and the 3rd Department of Radiation 203 is electrical connected with feeding portion 10.
C shape Department of Radiation 300 is connected with the open segment 203b of the 3rd Department of Radiation 203, and opening is towards the second Department of Radiation 202.In the present embodiment, C shape Department of Radiation 300 comprises the 5th Department of Radiation 205, the 6th Department of Radiation 206 and the 7th Department of Radiation 207.The 5th Department of Radiation 205 and the 6th Department of Radiation 206 are parallel to each other, and one end of the 7th Department of Radiation 207 is with the 5th Department of Radiation 205 is vertical is connected, and the other end is with the 6th Department of Radiation 206 is vertical is connected.In the present embodiment, the 5th Department of Radiation 205 is connected with the open segment 203b of the 3rd Department of Radiation 203, and is parallel to each other between the 5th Department of Radiation 205, the 6th Department of Radiation 206 and parasitic microstrip line 204.In the present embodiment, the other end of parasitic microstrip line 204 extends to C shape Department of Radiation 300, and forms with it gap 204b.By the open segment 203b of the second Department of Radiation 202, the 3rd Department of Radiation 203, C shape Department of Radiation 300 and common encirclement of parasitic microstrip line 204, forms inverted-F headroom district, by closed section and the common encirclement of parasitic microstrip line 204 of the first Department of Radiation 201, the second Department of Radiation 202, the 3rd Department of Radiation 203, form rectangle headroom district.
In the present embodiment, because inverted-F Department of Radiation 200, C shape Department of Radiation 300 and the common encirclement of parasitic microstrip line 204 have formed, be inverted-F headroom district and rectangle headroom district, can make radiant body 20 can give off the electromagnetic wave signal of two frequency ranges.
In the present embodiment, grounding parts 30 is arranged at the first surface of substrate, and stops 20 with radiation and be connected.
Refer to Fig. 3 and Fig. 4, be depicted as the dimensional drawing of dual-band antenna 100 in an embodiment of the present invention.
In the present embodiment, dual-band antenna 100 is arranged on substrate, and substrate is FR4 circuit board, and length is 50mm, and width is 20mm.The length of feeding portion 10 and width are respectively 0.8mm and 0.8mm.Grounding parts 30 comprises that length is 37.3mm, and the rectangle part that width is 20mm and length are 12mm, the ledge that width is 2mm.The length of the first Department of Radiation 201 and width are respectively 4.5mm and 1.7mm.The length of the second Department of Radiation 202 and width are respectively 3.75mm and 0.5mm.The length of the 3rd Department of Radiation 203 is l0mm, and wherein, the width of the open segment 203b of the 3rd Department of Radiation 203 is 2mm, and the width of closed section 203a is 1.5mm.Length and the width of parasitic microstrip line 204 are respectively 8mm and 0.25mm.The length of the 5th Department of Radiation 205 and width are respectively 3mm and 0.5mm.The length of the 6th Department of Radiation 206 and width are respectively 2.5mm and 0.75mm.The length of the 7th Department of Radiation 207 and width are respectively 1.5mm and 1.5mm.
Refer to Fig. 5, be depicted as the return loss resolution chart of dual-band antenna 100 in an embodiment of the present invention.As shown in the figure, when the size of dual-band antenna 100 is as shown in Figure 3 and Figure 4 time, the frequency range that its return loss covers at be less than-l0dB is the 5.225GHz～5.825GHz in 3.3GHz～3.8GHz and WiFi standard in WiMAX standard, meets user's demand.As we know from the figure, in present embodiment, by mode that inverted-F Department of Radiation, C shape Department of Radiation and strip Department of Radiation combine is set, can make frequency coverage that antenna gives off to the 5.225GHz～5.825GHz frequency range in 3.3GHz～3.8GHz frequency range in WiMAX standard and WiFi standard, thereby meet user's demand.
Dual-band antenna 100 in embodiment of the present invention, by the mode that adopts inverted-F Department of Radiation, C shape Department of Radiation and strip Department of Radiation to combine, can cover a plurality of frequency ranges, meets the demand of different user.
Claims (9)
1. a dual-band antenna, is arranged on substrate, it is characterized in that, described dual-band antenna comprises:
Feeding portion, is arranged at the first surface of described substrate, for feed-in electromagnetic wave signal;
Radiant body, is connected with described feeding portion, is arranged at the first surface of described substrate, for radiated electromagnetic wave signal, comprising:
Inverted-F Department of Radiation, comprise the first Department of Radiation of being parallel to each other, the second Department of Radiation and with equal vertical the 3rd Department of Radiation being connected of described the first Department of Radiation and described the second Department of Radiation, described the 3rd Department of Radiation comprises closed section and open segment;
C shape Department of Radiation, is connected with the open segment of described the 3rd Department of Radiation, and opening is towards described the second Department of Radiation; And
Parasitic microstrip line, elongated, with described vertical being connected of the second Department of Radiation; And
Grounding parts, is arranged at the first surface of described substrate, and is connected with described radiant body;
Wherein, the described open segment of described the second Department of Radiation, described the 3rd Department of Radiation, described C shape Department of Radiation and described parasitic microstrip line jointly surround and form inverted-F headroom district.
2. dual-band antenna as claimed in claim 1, it is characterized in that, described the 3rd Department of Radiation is described closed section between described the first Department of Radiation and described the second Department of Radiation, from described closed section, to the direction away from described the second Department of Radiation, extends to described open segment.
3. dual-band antenna as claimed in claim 2, is characterized in that, the width of the described open segment of described the 3rd Department of Radiation is greater than the width of described closed section.
4. dual-band antenna as claimed in claim 1, is characterized in that, described parasitic microstrip line is parallel with described the 3rd Department of Radiation.
5. dual-band antenna as claimed in claim 4, is characterized in that, extend to described the first Department of Radiation one end of described parasitic microstrip line, and form gap between the two.
6. dual-band antenna as claimed in claim 5, is characterized in that, the other end of described parasitic microstrip line extends to described C shape Department of Radiation, and forms gap between the two.
7. dual-band antenna as claimed in claim 1, it is characterized in that, described C shape Department of Radiation comprises the 5th Department of Radiation, the 6th Department of Radiation and the 7th Department of Radiation, wherein, described the 5th Department of Radiation and described the 6th Department of Radiation are parallel to each other, one end of described the 7th Department of Radiation is with the described the 5th Department of Radiation is vertical is connected, and the other end is with the described the 6th Department of Radiation is vertical is connected.
8. dual-band antenna as claimed in claim 7, is characterized in that, described the 5th Department of Radiation is connected with the open segment of described the 3rd Department of Radiation, and is parallel to each other between described the 5th Department of Radiation, the 6th Department of Radiation and parasitic microstrip line.
9. dual-band antenna as claimed in claim 1, is characterized in that, described feeding portion is square, and is electrical connected with described the 3rd Department of Radiation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010246157.4A CN102347526B (en) | 2010-08-05 | 2010-08-05 | Double-frequency antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010246157.4A CN102347526B (en) | 2010-08-05 | 2010-08-05 | Double-frequency antenna |
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| Publication Number | Publication Date |
|---|---|
| CN102347526A CN102347526A (en) | 2012-02-08 |
| CN102347526B true CN102347526B (en) | 2014-01-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010246157.4A Expired - Fee Related CN102347526B (en) | 2010-08-05 | 2010-08-05 | Double-frequency antenna |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI674706B (en) * | 2018-12-20 | 2019-10-11 | 和碩聯合科技股份有限公司 | Dual-band circularly polarized antenna structure |
| TWI740601B (en) * | 2020-08-10 | 2021-09-21 | 國立高雄科技大學 | Label antennae for installation in conductive materials |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1507113A (en) * | 2002-12-06 | 2004-06-23 | ������������ʽ���� | Pattern antenna |
| CN201038319Y (en) * | 2007-04-27 | 2008-03-19 | 富港电子（东莞）有限公司 | Multi-frequency antenna |
| CN101297440A (en) * | 2005-10-25 | 2008-10-29 | 索尼爱立信移动通信日本株式会社 | Multiband antenna device and communication terminal device |
| CN101677148A (en) * | 2008-09-16 | 2010-03-24 | 鸿富锦精密工业（深圳）有限公司 | Multifrequency antenna |
-
2010
- 2010-08-05 CN CN201010246157.4A patent/CN102347526B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1507113A (en) * | 2002-12-06 | 2004-06-23 | ������������ʽ���� | Pattern antenna |
| CN101297440A (en) * | 2005-10-25 | 2008-10-29 | 索尼爱立信移动通信日本株式会社 | Multiband antenna device and communication terminal device |
| CN201038319Y (en) * | 2007-04-27 | 2008-03-19 | 富港电子（东莞）有限公司 | Multi-frequency antenna |
| CN101677148A (en) * | 2008-09-16 | 2010-03-24 | 鸿富锦精密工业（深圳）有限公司 | Multifrequency antenna |
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| CN102347526A (en) | 2012-02-08 |
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