CN100349325C - Dipole antenna array - Google Patents
Dipole antenna array Download PDFInfo
- Publication number
- CN100349325C CN100349325C CNB031019870A CN03101987A CN100349325C CN 100349325 C CN100349325 C CN 100349325C CN B031019870 A CNB031019870 A CN B031019870A CN 03101987 A CN03101987 A CN 03101987A CN 100349325 C CN100349325 C CN 100349325C
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- China
- Prior art keywords
- dipole antenna
- antenna array
- microstrip
- antenna
- dipole
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Abstract
The present invention provides a dipole antenna array, which connects a plurality of dipole antennae together to form a dipole antenna array. One end of the dipole antenna array adjusts the band width, the impedance matching and the transmission gain thereof by a balanced line and an open cutting line. Both ends of each dipole antenna can also be additionally provided with a loading device which is similar to an antenna, such as a small-sized helical antenna, and a reflector is selectively and additionally arranged on the end of the dipole antenna array.
Description
Technical field
The present invention relates to a kind of dipole antenna array, relate to especially, utilize aerial array (antenna array) mode to increase frequency range and gain, make it have double frequency or multifrequency function based on dipole antenna (dipole antenna).
Background technology
Mobile phone is asked city's initial stage, mostly with the helical structure coil that the exposes main element as antenna.Now the institute widely used this type of coil antenna in, it is broadly divided into telescopic and fixed two kinds of main kenels.Though but use which kind of structure, it is still outstanding from the body end face of mobile phone with length-specific under normal conditions.Therefore there are various microplate antennas to produce, use the microplate antenna to have complanation, the concealed characteristic that does not account for volume that reaches.
United States Patent (USP) the 3rd, 921, No. 177 and the 3rd, 810, No. 183 and so on microplate antennas are normally formed with circle or rectangle foil, fill dielectric material between itself and ground connection, but this type of microplate antenna are only allowed narrower frequency range.Taiwan patent No. 81108896 (No. 07/798700, Application No.) then provides a kind of and has dwindled and be the microplate antenna of wideband.But its shortcoming then is to make the helical antenna element be located at the ground plate of separation, and therebetween is provided with specific thicknesses dielectric and support materials, and the entire antenna size still is difficult to further dwindle.
And now with plane inverse F type circuit (Planar Inverted-F antenna, PIFA), constitute double frequency (Dual-Frequency) antenna (IEEE TRANSACTIONS ON ANTENNASANDPROPAGATlON, VOL 45, NO.10, OCTOBER 1997), then be a kind of desirable Miniaturized Microstrip Antennas form, but because:
Therefore as long as with antenna planeization, miniaturization, its frequency bandwidth and radiation efficiency all can reduce, thereby necessity of being improved is arranged.
Summary of the invention
Purpose of the present invention is promptly providing a kind of microstrip-type dipole antenna array, and it can solve the problem of microstrip antenna frequency bandwidth and radiation efficiency deficiency, thereby can effectively be applicable on the various portable type communication apparatus, as double frequency or multifrequency antenna.
Technical scheme of the present invention is:
A kind of microstrip-type dipole antenna array, it is characterized in that, with a plurality of microstrip-type dipole antennas also, being serially connected becomes a microstrip-type dipole antenna array, described each microstrip-type dipole antenna two ends also can add the antenna charger, and this microstrip-type dipole antenna array one end is to adjust its frequency range, impedance matching and gain with a balanced circuit and an open stub;
Described antenna charger is a small helical antenna;
Described dipole antenna array one end can select to add reflector;
For implementing above-mentioned purpose, the present invention links together a plurality of microstrip-type dipole antennas becomes a dipole antenna array, and this dipole antenna array one end is more adjusted its frequency range, impedance matching and gain with a balanced circuit and an open stub.
Beneficial effect of the present invention is: can solve the problem of microstrip antenna frequency bandwidth and radiation efficiency deficiency, it can effectively be applicable on the various portable type communication apparatus, really value on the tool industry.
Description of drawings
Fig. 1 is existing dipole antenna configuration figure;
Fig. 2 is a first embodiment of the present invention structure chart:
Fig. 3 is the further enforcement illustration according to the 2nd figure;
Fig. 4 is the H plane electromagnetic radiation resolution chart of Fig. 3 embodiment at 2400MHz;
Fig. 5 is the H plane electromagnetic radiation resolution chart of Fig. 3 embodiment at 5150NHz;
Fig. 6 is the E plane electromagnetic radiation resolution chart of Fig. 3 embodiment at 2400MHz;
Fig. 7 is the real E plane electromagnetic radiation resolution chart that drags example at 5150MHz of Fig. 3.
Number in the figure is described as follows:
20,30 1 dipole antennas
40------------one balanced circuit
50------------one open stub
60------------one * type helical antenna
70------------one reflector
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described:
A kind of microstrip-type dipole antenna array, it is characterized in that, with a plurality of microstrip-type dipole antennas also, being serially connected becomes a microstrip-type dipole antenna array, described each microstrip-type dipole antenna two ends also can add the antenna charger, and this microstrip-type dipole antenna array one end is to adjust its frequency range, impedance matching and gain with a balanced circuit and an open stub;
Described antenna charger is a small helical antenna;
Described dipole antenna array one end can select to add reflector;
At first as shown in Figure 1, dipole antenna 10 mainly is to be provided with two microstrip lines 12,14 that are provided with relatively, for forming required radiation frequency.But it can produce the drawback of Miniaturized Microstrip Antennas form equally, that is frequency bandwidth and radiation efficiency all can reduce, and therefore is difficult to be useful on the various portable type communication apparatus now.
As shown in Figure 2, the present invention is based on dipole antenna, with a plurality of dipole antennas 20,30 also, be serially connected, become a microstrip-type dipole antenna array.Therefore can effectively increase the frequency range and the gain of this kind microstrip antenna, thereby can be widely used on the various portable type communication apparatus.
In further embodiment, each dipole antenna two ends more can add the class antenna charger as small helical antenna.
In desirable embodiment, above-mentioned dipole antenna array more can select to add reflector to increase its gain.
The present invention as shown in Figure 3 does among the further embodiment, and more symmetrical circuit 40 and an open stub (open stub) 50 are adjusted its frequency range, impedance matching and gain at above-mentioned dipole antenna array one end.
Simultaneously, in the above-described embodiments, each dipole antenna 20,30 two ends more can add antenna and load (antenna loading) device, and this device is preferably small helical antenna (mini-apertureantenna) 60.These small helical antennas 60 become inductive and load, and have the function that shortens electrical length, and can form another resonance frequency.Comply with above-mentioned whole dipole antenna array thereby have double frequency or the function of multifrequency.
In better embodiment, above-mentioned dipole antenna array end can select to add a reflector 70, uses the gain that increases entire antenna.
In the resolution chart as Fig. 4-shown in Figure 7, Fig. 4, Fig. 5 are the H plane electromagnetic radiation resolution chart of 2400MHz and 5150MHz, and Fig. 6, Fig. 7 are the E plane electromagnetic radiation resolution chart of 2400MHz and 5150MHz, can find out that it all has good multifrequency functional status.
Above illustrated embodiment is only with for conveniently illustrating, and not from the present invention's spirit category, has the knack of the various simple and easy distortion that this industry personage institute may do and all must include in following claim with modification.
Claims (3)
1, a kind of microstrip-type dipole antenna array, it is characterized in that, with a plurality of microstrip-type dipole antennas also, being serially connected becomes a microstrip-type dipole antenna array, described each microstrip-type dipole antenna two ends also add the antenna charger, and this microstrip-type dipole antenna array one end is to adjust its frequency range, impedance matching and gain with a balanced circuit and an open stub.
2, microstrip-type dipole antenna array according to claim 2 is characterized in that, described antenna charger is a small helical antenna.
According to any described microstrip-type dipole antenna array of claim 1 or 2, it is characterized in that 3, described dipole antenna array one end selects to add reflector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031019870A CN100349325C (en) | 2003-01-30 | 2003-01-30 | Dipole antenna array |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031019870A CN100349325C (en) | 2003-01-30 | 2003-01-30 | Dipole antenna array |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1521893A CN1521893A (en) | 2004-08-18 |
| CN100349325C true CN100349325C (en) | 2007-11-14 |
Family
ID=34281538
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB031019870A Expired - Fee Related CN100349325C (en) | 2003-01-30 | 2003-01-30 | Dipole antenna array |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100349325C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7812768B2 (en) | 2008-04-28 | 2010-10-12 | Hong Fu Jin Precision Industry (Shenzhen) Co., Ltd. | Multiple input multiple output antenna |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4814783A (en) * | 1987-11-09 | 1989-03-21 | Gte Government Systems Corporation | Foreshortened antenna structures |
| JPH0537226A (en) * | 1991-07-31 | 1993-02-12 | Mitsubishi Electric Corp | Print dipole antenna |
| US5898410A (en) * | 1997-04-28 | 1999-04-27 | Allen Telecom Inc. | Pre-tuned hybrid logarithmic yagi antenna system |
-
2003
- 2003-01-30 CN CNB031019870A patent/CN100349325C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4814783A (en) * | 1987-11-09 | 1989-03-21 | Gte Government Systems Corporation | Foreshortened antenna structures |
| JPH0537226A (en) * | 1991-07-31 | 1993-02-12 | Mitsubishi Electric Corp | Print dipole antenna |
| US5898410A (en) * | 1997-04-28 | 1999-04-27 | Allen Telecom Inc. | Pre-tuned hybrid logarithmic yagi antenna system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7812768B2 (en) | 2008-04-28 | 2010-10-12 | Hong Fu Jin Precision Industry (Shenzhen) Co., Ltd. | Multiple input multiple output antenna |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1521893A (en) | 2004-08-18 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20071114 Termination date: 20180130 |