CN104485503A - Planar inverted F antenna (PIFA) - Google Patents
Planar inverted F antenna (PIFA) Download PDFInfo
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- CN104485503A CN104485503A CN201410797594.3A CN201410797594A CN104485503A CN 104485503 A CN104485503 A CN 104485503A CN 201410797594 A CN201410797594 A CN 201410797594A CN 104485503 A CN104485503 A CN 104485503A
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Abstract
The invention discloses a planar inverted F antenna (PIFA). The PIFA comprises a radiating element, wherein a short-circuit point and a signal feed-in point are respectively arranged at the two ends of the outer edge of a main matching line of the radiating element, a main impedance matching access is formed between the signal feed-in point and the short-circuit point, and the radiating element comprises a main radiating section, a signal transmission section connected with the main radiating section into an L shape, an impedance matching section connected with the signal transmission section and a signal feed-in section connected with the impedance matching section; the total length of the main radiating section, the signal transmission section, the impedance matching section and the signal feed-in section is 1/4 wavelength of first assigned frequency; the total length of the signal transmission section, the impedance matching section and the signal feed-in section is 1/4 wavelength of second assigned frequency. Therefore, the PIFA realizes a double-frequency function and has the advantages of high gain, simple structure and high convenience in use.
Description
Technical field
The present invention relates to antenna technical field, particularly relate to a kind of plane inverse F type PIFA antenna.
Background technology
Now along with the progress and development of society's science and technology, hand-held mobile communicating equipment has become the indispensable a kind of instrument of daily life.Various mobile terminal device popularity rate hoisting velocity socially quickly, at this wherein, most convenient, the most efficiently mode are exactly wireless access way, because wireless access way has saved a large amount of network construction expenses, can plan fast, Fast Installation, to come into operation fast, safeguard also relatively succinct.How to design a kind of miniaturization, difficult point and bottleneck that the built-in aerial of low section and multiband becomes mobile communication development, so the feature in order to meet this product, corresponding built-in aerial just needs same light, thin, little, and the performance of antenna self but can not obviously reduce, present built-in aerial generally uses the design form of PIFA (Planar Inverted F-shaped Antenna, planar inverted F-shape antenna).
Conventional plane inverted F shaped antenna have structure simple, lightweight, can the particular advantages such as conformal, low cost of manufacture, radiation efficiency be high.Planar inverted-F antenna adds a Structure composing of falling L at vertical first end of the antenna of falling L.It uses the additional structure of falling L to adjust the coupling of antenna and feeding coaxial lines.This antenna has low profile structure, and radiation field has horizontal and vertical two kinds polarization, and in addition due to compact conformation and the direction radiation characteristic such as to have, its good grounding design effectively can improve the operating efficiency of antenna simultaneously.
But this antenna has a very fatal defect, gain is on the low side, and conventional omnidirectional's average gain value cannot more than 1.5dBi, and the antenna structure of general employing multifrequency is complicated, it is not too convenient to use, and this has just had a strong impact on the result of use of mobile terminal product in weak signal environment.
Summary of the invention
The object of this invention is to provide a kind of plane inverse F type PIFA antenna, to realize double frequency function, high-gain and structure are simple, easy to use.
For solving the problems of the technologies described above, the invention provides a kind of plane inverse F type PIFA antenna, comprise radiating element, the two ends, outer of the main matched line of described radiating element are respectively arranged with short dot and signal feed-in point, form main impedance matching path between described signal feed-in point and described short dot, described radiating element comprises:
Primary radiation section;
The Signal transmissions section that be connected L-shaped with described primary radiation section;
The impedance matching section be connected with described Signal transmissions section;
The signal feed-in section be connected with described impedance matching section;
Wherein, the total length of described primary radiation section, Signal transmissions section, impedance matching section and signal feed-in section is 1/4 wavelength of the first assigned frequency; The total length of described Signal transmissions section, impedance matching section and signal feed-in section is 1/4 wavelength of the second assigned frequency.
Preferably, described primary radiation section is the first Department of Radiation that described Signal transmissions section extends out.
Preferably, described radiating element also comprises: the impedance end matching section being arranged at the extension of described main impedance matching path.
Preferably, described plane inverse F type PIFA antenna is connected by the printing board PCB of plug-in unit with the circuitry of described reversed F-typed PIFA antenna.
Preferably, described PCB is reflecting plate.
A kind of plane inverse F type PIFA antenna provided by the present invention, comprise radiating element, the two ends, outer of the main matched line of described radiating element are respectively arranged with short dot and signal feed-in point, form main impedance matching path between described signal feed-in point and described short dot, described radiating element comprises: primary radiation section; The Signal transmissions section that be connected L-shaped with described primary radiation section; The impedance matching section be connected with described Signal transmissions section; The signal feed-in section be connected with described impedance matching section; Wherein, the total length of described primary radiation section, Signal transmissions section, impedance matching section and signal feed-in section is 1/4 wavelength of the first assigned frequency; The total length of described Signal transmissions section, impedance matching section and signal feed-in section is 1/4 wavelength of the second assigned frequency.Visible, total length due to described primary radiation section, Signal transmissions section, impedance matching section and signal feed-in section is 1/4 wavelength of the first assigned frequency, and the total length of described Signal transmissions section, impedance matching section and signal feed-in section is 1/4 wavelength of the second assigned frequency, then this plane inverse F type PIFA antenna realizes double frequency function, high-gain and structure are simple, easy to use.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments of the invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to the accompanying drawing provided.
The structural representation of a kind of plane inverse F type PIFA antenna that Fig. 1 provides for the embodiment of the present invention.
Embodiment
Core of the present invention is to provide a kind of plane inverse F type PIFA antenna, and to realize double frequency function, high-gain and structure are simple, object easy to use.
The present invention program is understood better in order to make those skilled in the art person, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Please refer to Fig. 1, the structural representation of a kind of plane inverse F type PIFA antenna that Fig. 1 provides for the embodiment of the present invention, this plane inverse F type PIFA antenna comprises radiating element, the two ends, outer of the main matched line of described radiating element are respectively arranged with short dot 11 and signal feed-in point 12, form main impedance matching path between described signal feed-in point 12 and described short dot 11, described radiating element comprises:
Primary radiation section 50;
The Signal transmissions section 60 that be connected L-shaped with described primary radiation section 50;
The impedance matching section 30 be connected with described Signal transmissions section 60;
The signal feed-in section 20 be connected with described impedance matching section 30;
Wherein, the total length of described primary radiation section 50, Signal transmissions section 60, impedance matching section 30 and signal feed-in section 20 is 1/4 wavelength of the first assigned frequency; The total length of described Signal transmissions section 60, impedance matching section 30 and signal feed-in section 20 is 1/4 wavelength of the second assigned frequency.
Visible, the total length of described primary radiation section, Signal transmissions section, impedance matching section and signal feed-in section is 1/4 wavelength of the first assigned frequency, the total length of described Signal transmissions section, impedance matching section and signal feed-in section is 1/4 wavelength of the second assigned frequency, thus can double frequency be realized, can form such as a 2.4G primary radiation section and a 5G primary radiation section, and structure is simple.And then greatly improve the signal transmitting and receiving effect of user in weak signal environment, can avoid, in order to provide gain to use oversize antenna, reducing the pocket of whole terminal equipment and type easy to use.And ensure that the miniaturization of antenna, the feature of low-profile size, provides cost savings, and maintains the overall appearance of product simultaneously.
Concrete, described primary radiation section 50 is the first Department of Radiation that described Signal transmissions section 60 extends out.
Described radiating element also comprises: the impedance end matching section 40 being arranged at the extension of described main impedance matching path.
Described plane inverse F type PIFA antenna is connected by the printing board PCB of plug-in unit with the circuitry of described plane inverse F type PIFA antenna.
Described PCB is reflecting plate.
Visible, astronomical cycle mode is plug-in unit, and merge into a single whole with the printing board PCB of the circuitry using this antenna, described PCB is reflecting plate, reaches the target realizing high-gain.
Concrete, the body of described antenna can by hardware dies punch forming, and astronomical cycle mode is plug-in unit, merges into a single whole, reach the target realizing high-gain with the printing board PCB of the circuitry using this antenna; The body of described antenna can use plastic cement to melt to form and be integrated, and astronomical cycle mode is still plug-in unit, merges into a single whole, reach the target realizing high-gain with the printing board PCB of the circuitry using this antenna.
A kind of plane inverse F type PIFA antenna provided by the present invention, the total length of described primary radiation section, Signal transmissions section, impedance matching section and signal feed-in section is 1/4 wavelength of the first assigned frequency, the total length of described Signal transmissions section, impedance matching section and signal feed-in section is 1/4 wavelength of the second assigned frequency, double frequency can be realized, and structure is simple.
Further, described plane inverse F type PIFA antenna is connected by the printing board PCB plate of plug-in unit with the circuitry of described reversed F-typed PIFA antenna, and described PCB is reflecting plate, can realize high-gain, and easy to use.Visible, this plane inverse F type PIFA antenna realizes double frequency function, and high-gain and structure are simple, easy to use.
Above a kind of plane inverse F type PIFA antenna provided by the present invention is described in detail.Apply specific case herein to set forth principle of the present invention and execution mode, the explanation of above embodiment just understands method of the present invention and core concept thereof for helping.It should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention, can also carry out some improvement and modification to the present invention, these improve and modify and also fall in the protection range of the claims in the present invention.
Claims (5)
1. a plane inverse F type PIFA antenna, comprise radiating element, the two ends, outer of the main matched line of described radiating element are respectively arranged with short dot and signal feed-in point, form main impedance matching path between described signal feed-in point and described short dot, it is characterized in that, described radiating element comprises:
Primary radiation section;
The Signal transmissions section that be connected L-shaped with described primary radiation section;
The impedance matching section be connected with described Signal transmissions section;
The signal feed-in section be connected with described impedance matching section;
Wherein, the total length of described primary radiation section, Signal transmissions section, impedance matching section and signal feed-in section is 1/4 wavelength of the first assigned frequency; The total length of described Signal transmissions section, impedance matching section and signal feed-in section is 1/4 wavelength of the second assigned frequency.
2. plane inverse F type PIFA antenna as claimed in claim 1, it is characterized in that, described primary radiation section is the first Department of Radiation that described Signal transmissions section extends out.
3. plane inverse F type PIFA antenna as claimed in claim 1, it is characterized in that, described radiating element also comprises: the impedance end matching section being arranged at the extension of described main impedance matching path.
4. plane inverse F type PIFA antenna as claimed in claim 1, it is characterized in that, described plane inverse F type PIFA antenna is connected by the printing board PCB of plug-in unit with the circuitry of described plane inverse F type PIFA antenna.
5. plane inverse F type PIFA antenna as claimed in claim 4, it is characterized in that, described PCB is reflecting plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410797594.3A CN104485503A (en) | 2014-12-19 | 2014-12-19 | Planar inverted F antenna (PIFA) |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410797594.3A CN104485503A (en) | 2014-12-19 | 2014-12-19 | Planar inverted F antenna (PIFA) |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104485503A true CN104485503A (en) | 2015-04-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410797594.3A Pending CN104485503A (en) | 2014-12-19 | 2014-12-19 | Planar inverted F antenna (PIFA) |
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| CN (1) | CN104485503A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104882666A (en) * | 2015-05-07 | 2015-09-02 | 深圳市共进电子股份有限公司 | Small-sized planar high-gain inverted-F antenna |
| CN104966897A (en) * | 2015-07-07 | 2015-10-07 | 深圳市共进电子股份有限公司 | T type dipole antenna |
| CN105186115A (en) * | 2015-06-29 | 2015-12-23 | 福建联迪商用设备有限公司 | Antenna coil for non-contact card readers, antenna for non-contact card readers, antenna coil making method and antenna making method |
| CN105655688A (en) * | 2016-03-04 | 2016-06-08 | 深圳市兰丁科技有限公司 | Bluetooth antenna |
| CN107925166A (en) * | 2015-09-02 | 2018-04-17 | 高通股份有限公司 | Half paster antenna of elevation radiation short connection type |
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| US6738023B2 (en) * | 2002-10-16 | 2004-05-18 | Etenna Corporation | Multiband antenna having reverse-fed PIFA |
| CN1601807A (en) * | 2003-09-26 | 2005-03-30 | 富士康(昆山)电脑接插件有限公司 | Plane reverse F-shape antenna and its mfg method |
| US20050128151A1 (en) * | 2003-12-13 | 2005-06-16 | Info & Communications Univ Educational Foundation | Internal multi-band antenna with multiple layers |
| CN1879256A (en) * | 2003-11-13 | 2006-12-13 | 日立电线株式会社 | Antenna, method for manufacturing the same and portable radio terminal employing it |
| CN102884679A (en) * | 2010-12-24 | 2013-01-16 | 松下电器产业株式会社 | Antenna device |
| CN103545606A (en) * | 2012-07-10 | 2014-01-29 | 三星电子株式会社 | Broadband variable antenna device and portable terminal having the same |
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2014
- 2014-12-19 CN CN201410797594.3A patent/CN104485503A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6738023B2 (en) * | 2002-10-16 | 2004-05-18 | Etenna Corporation | Multiband antenna having reverse-fed PIFA |
| CN1601807A (en) * | 2003-09-26 | 2005-03-30 | 富士康(昆山)电脑接插件有限公司 | Plane reverse F-shape antenna and its mfg method |
| CN1879256A (en) * | 2003-11-13 | 2006-12-13 | 日立电线株式会社 | Antenna, method for manufacturing the same and portable radio terminal employing it |
| US20050128151A1 (en) * | 2003-12-13 | 2005-06-16 | Info & Communications Univ Educational Foundation | Internal multi-band antenna with multiple layers |
| CN102884679A (en) * | 2010-12-24 | 2013-01-16 | 松下电器产业株式会社 | Antenna device |
| CN103545606A (en) * | 2012-07-10 | 2014-01-29 | 三星电子株式会社 | Broadband variable antenna device and portable terminal having the same |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104882666A (en) * | 2015-05-07 | 2015-09-02 | 深圳市共进电子股份有限公司 | Small-sized planar high-gain inverted-F antenna |
| CN105186115A (en) * | 2015-06-29 | 2015-12-23 | 福建联迪商用设备有限公司 | Antenna coil for non-contact card readers, antenna for non-contact card readers, antenna coil making method and antenna making method |
| CN104966897A (en) * | 2015-07-07 | 2015-10-07 | 深圳市共进电子股份有限公司 | T type dipole antenna |
| CN104966897B (en) * | 2015-07-07 | 2018-07-13 | 深圳市共进电子股份有限公司 | T-type dipole antenna |
| CN107925166A (en) * | 2015-09-02 | 2018-04-17 | 高通股份有限公司 | Half paster antenna of elevation radiation short connection type |
| CN105655688A (en) * | 2016-03-04 | 2016-06-08 | 深圳市兰丁科技有限公司 | Bluetooth antenna |
| CN105655688B (en) * | 2016-03-04 | 2019-07-26 | 深圳市海蕴新能源有限公司 | Bluetooth antenna |
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Application publication date: 20150401 |