CN102136847A - Wideband antenna matching device and method thereof - Google Patents
Wideband antenna matching device and method thereof Download PDFInfo
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- CN102136847A CN102136847A CN2010101058533A CN201010105853A CN102136847A CN 102136847 A CN102136847 A CN 102136847A CN 2010101058533 A CN2010101058533 A CN 2010101058533A CN 201010105853 A CN201010105853 A CN 201010105853A CN 102136847 A CN102136847 A CN 102136847A
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Abstract
The invention discloses a wideband antenna matching device and a wideband antenna matching method thereof, which are applied to a wireless communication device with a plurality of operating bands. The wideband antenna matching device comprises a band matching module, a first band selection unit and a second band selection unit. The band matching module comprises N band matching networks. In one of the operating bands, one of the band matching networks realizes impedance matching between a wideband antenna of the wireless communication device and a radio frequency transceiver. The first band selection unit connects the wideband antenna and the band matching module, and the second band selection unit connects the radio frequency transceiver and the band matching module. The first band selection unit and the second band selection unit simultaneously select one of the band matching networks according to a current operating band of the wireless communication device to realize the impedance matching between the wideband antenna and the radio frequency transceiver.
Description
Technical field
The present invention relates to the method for Antenna Impedance Matching (antenna impedance matching), and be particularly related to a kind of wide frequency antenna coalignment and method thereof.
Background technology
Present wireless communication apparatus, for example mobile phone just develops towards the little direction of volume.But wireless communication apparatus still has a plurality of operational frequency bands simultaneously, for example, 4 frequency bands that global system for mobile communications (globalsystem for mobile communications abbreviates GSM as) is commonly used such as 850MHz, 900MHz, 1800MHz and 1900MHz etc.When the smaller volume of wireless communication apparatus, the factors such as circuit of mechanism, antenna body and wireless communication apparatus can make wireless signal Transceiver Features variation, the especially antenna of wireless communication apparatus integral body can reduce at the gain usefulness and the impedance frequency range (impedancebandwidth) of each frequency band.
Fig. 1 is the schematic diagram of a kind of known wide frequency antenna impedance matching network system.See also Fig. 1, wide frequency antenna impedance matching network system 100 comprises a wide frequency antenna 110, frequency band matching network (band matching network) 120 and radio-frequency (RF) transceiver 132.Wide frequency antenna 110 is connected to frequency band matching network 120, and the radio-frequency (RF) transceiver in the wide frequency antenna impedance matching network system 100 (radiofrequency transceiver) 132 also connects frequency band matching network 120, reaches the impedance matching of radio-frequency (RF) transceiver 132 and wide frequency antenna 110 with expection.Yet the common frequency band matching technique that adopts of known technology only designs frequency band matching network 120 at the employed operational frequency bands of wireless communication apparatus.For example, only the 900MHz at normal service band carries out the frequency band coupling in frequency band matching network 120, and in other frequency bands of operation such as 850MHz, 1800MHz and 1900MHz, still shared this frequency band matching network 120.Hence one can see that, in the time of other frequency bands of operation such as 850MHz, 1800MHz and 1900MHz, radio-frequency (RF) transceiver 132 can't obtain good impedance matching with wide frequency antenna 110, makes wireless communication apparatus can't obtain good impedance frequency range, so that whole wireless signal Transceiver Features worsens.
Summary of the invention
From the above, according to example embodiment of the present invention, the invention provides a kind of wide frequency antenna coalignment and method thereof.The wide frequency antenna coalignment is according to the present operational frequency bands of wireless communication apparatus, choose a frequency band matching network of corresponding this operational frequency bands in the middle of a plurality of frequency band matching networks by the frequency band selected cell, reach the impedance matching between wide frequency antenna and the radio-frequency (RF) transceiver.In view of the above, can obtain the whole wireless signal Transceiver Features of preferable wireless communication apparatus.
According to example embodiment of the present invention, the present invention proposes a kind of wide frequency antenna coalignment, is applicable to the wireless communication apparatus with a plurality of operational frequency bands.Above-mentioned wide frequency antenna coalignment comprises frequency band matching module, the first frequency band selected cell and the second frequency band selected cell.The frequency band matching module, comprise N frequency band matching network, wherein, these a little operational frequency bands one of them the time, one of them of N frequency band matching network makes the wide frequency antenna of wireless communication apparatus and the impedance matching of radio-frequency (RF) transceiver, and N is the positive integer more than or equal to 2.The first frequency band selected cell links wide frequency antenna and frequency band matching module, and the second frequency band selected cell links radio-frequency (RF) transceiver and frequency band matching module.In addition, the first frequency band selected cell and the second frequency band selected cell are according to the present operational frequency bands of wireless communication apparatus, select to connect one of them of N frequency band matching network simultaneously, make the impedance matching in this present operational frequency bands of wide frequency antenna and radio-frequency (RF) transceiver.
According to example embodiment of the present invention, the present invention proposes a kind of wide frequency antenna matching process, be applicable to the wireless communication apparatus with a plurality of operational frequency bands, and wireless communication apparatus comprises the first frequency band selected cell, the second frequency band selected cell and frequency band matching module.Above-mentioned wide frequency antenna matching process may further comprise the steps.At first, link wide frequency antenna and frequency band matching module by the first frequency band selected cell.Then, link radio-frequency (RF) transceiver and frequency band matching module by the second frequency band selected cell.Then, present operational frequency bands according to wireless communication apparatus, one of them of N frequency band matching network of selection connection frequency band matching module is to wide frequency antenna and radio-frequency (RF) transceiver, make the impedance matching in this present operational frequency bands of wide frequency antenna and radio-frequency (RF) transceiver, wherein, N is the positive integer more than or equal to 2.
Based on above-mentioned, example embodiment of the present invention provides a kind of wide frequency antenna coalignment and method thereof.The wide frequency antenna coalignment is according to the present operational frequency bands of wireless communication apparatus, by the frequency band selected cell among a plurality of frequency band matching networks, the frequency band matching network that dynamic is chosen corresponding this operational frequency bands connects wide frequency antenna and radio-frequency (RF) transceiver, makes the impedance matching in this operational frequency bands of wide frequency antenna and radio-frequency (RF) transceiver.So, wireless communication apparatus can obtain preferable impedance frequency range, and then improves whole wireless signal transmitting-receiving performance (over-the-air performance abbreviates OTAperformance as).
Example embodiment of the present invention cited below particularly, and conjunction with figs. is described in detail below, so that above-mentioned feature and advantage can be become apparent.
Description of drawings
Fig. 1 is the schematic diagram of a kind of known wide frequency antenna impedance matching network system.
Fig. 2 is the system block diagrams that an example embodiment according to the present invention illustrates a kind of wide frequency antenna coalignment.
Fig. 3 is the flow chart that an example embodiment according to the present invention illustrates a kind of wide frequency antenna matching process.
[main element symbol description]
110: 230: the first frequency band selected cells of wide frequency antenna
120: 240: the second frequency band selected cells of frequency band matching network
132: radio-frequency (RF) transceiver S302～S310: a demonstration of the present invention
210: antenna matching unit embodiment illustrates a kind of wide frequency antenna match party
220: each step of frequency band coupling module method
2201 ..., 220N: the 1st frequency band
The distribution road ..., N frequency band matching network
Embodiment
Now will be in detail with reference to disclosed example embodiment, described example embodiment is illustrated in the accompanying drawing more, and subsidiary one what carry is that identical reference marker is used to represent same or analogous element in the whole accompanying drawing.
According to example embodiment of the present invention, the invention provides a kind of wide frequency antenna coalignment and method thereof.The wide frequency antenna coalignment is according to the present operational frequency bands of wireless communication apparatus, by the frequency band selected cell among a plurality of frequency band matching networks, a frequency band matching network choosing corresponding this operational frequency bands connects wide frequency antenna and radio-frequency (RF) transceiver, makes impedance matching between wide frequency antenna and the radio-frequency (RF) transceiver.So, wireless communication apparatus can obtain preferable whole wireless signal Transceiver Features.
Fig. 2 is the system block diagrams that an example embodiment according to the present invention illustrates a kind of wide frequency antenna coalignment.Please refer to Fig. 2, in this example embodiment, system 200 is arranged in the wireless communication apparatus, and system 200 comprises wide frequency antenna 110, antenna matching unit 210 and radio-frequency (RF) transceiver 132.And antenna matching unit 210 comprises the first frequency band selected cell 230, frequency band matching module (bandmatching module) 220, the second frequency band selected cell 240.
Please continue with reference to Fig. 2, in this example embodiment, the wide frequency antenna 110 and the first frequency band selected cell 230 are connected in the A point, and the radio-frequency (RF) transceiver 132 and the second frequency band selected cell 240 are connected in the B point.The first frequency band selected cell 230 and the second frequency band selected cell 240 are coupled to frequency band matching module 220 wide frequency antenna 110 and radio-frequency (RF) transceiver 132 respectively.Frequency band matching module 220 comprises N frequency band matching network (band matching network), be respectively the 1st frequency band matching network 2201 ..., N frequency band matching network 220N, wherein, N is the positive integer more than or equal to 2, and N equals the sum of a plurality of operational frequency bands of this wireless communication apparatus.For instance, when the assumed wireless communication device had 4 operational frequency bands of GSM such as 850MHz, 900MHz, 1800MHz and 1900MHz, then N was 4.Yet the present invention is not limited thereto, in other embodiments of the invention, wireless communication apparatus can also comprise the operational frequency bands of other numbers, also can support gsm system wireless telecommunication system in addition, for example: broadband code division is multiple to access (Wideband Code Division Multiple Access, abbreviate WCDMA as) system, sign indicating number divides and multiplely to access 2000 editions (abbreviating cdma2000 as) systems or time division synchronous code division is multiple accesses (Time Division-Synchronous Code Division MultipleAccess abbreviates TD-SCDMA as) system etc.In addition, wireless communication apparatus can be mobile phone, mobile Internet access device (mobile Internet device) or wireless network card (wireless network card).
In this example embodiment, in any one operational frequency bands of a plurality of operational frequency bands of wireless communication apparatus, one of them of N frequency band matching network corresponds to this operational frequency bands, makes the wide frequency antenna 110 and the impedance matching of radio-frequency (RF) transceiver 132 in this operational frequency bands of wireless communication apparatus.In other words, the 1st frequency band matching network 2201 ..., N frequency band matching network 220N is separately corresponding to one of them of a plurality of operational frequency bands, and each frequency band matching network is in pairing operational frequency bands, makes the impedance matching of wide frequency antenna 110 and radio-frequency (RF) transceiver 132.Illustrate, in this example embodiment, the assumed wireless communication device has 4 operational frequency bands such as the 850MHz of GSM, 900MHz, 1800MHz and 1900MHz, then can be with 4 frequency band matching networks as the 1st frequency band matching network 2201, the 2nd frequency band matching network 2202, the 3rd frequency band matching network 2203 and the 4th frequency band matching network 2204 are set to correspond to operational frequency bands 850MHz respectively, 900MHz, 1800MHz and 1900MHz, and the 1st frequency band matching network 2201, the 2nd frequency band matching network 2202, the 3rd frequency band matching network 2203 and the 4th frequency band matching network 2204 are respectively at operational frequency bands 850MHz, 900MHz, among 1800MHz and the 1900MHz, make the impedance matching of wide frequency antenna 110 and radio-frequency (RF) transceiver 132.
In this example embodiment, in order to reach the impedance matching of radio-frequency (RF) transceiver 132 and wide frequency antenna 110, the first frequency band selected cell 230 and the second frequency band selected cell 240 are according to the present operational frequency bands of wireless communication apparatus, select to connect one of them of N frequency band matching network simultaneously, make wide frequency antenna 110 and the impedance matching of radio-frequency (RF) transceiver 132 in present operational frequency bands.In view of the above, wireless communication apparatus can obtain preferable impedance frequency range (impedance bandwidth) and whole wireless signal Transceiver Features.
In this example embodiment, the first frequency band selected cell 230 and the second frequency band selected cell 240 comprise a switch (not illustrating) separately, and the first frequency band selected cell 230 and the second frequency band selected cell 240 select to be connected N frequency band matching network one of them separately by this switch.In other embodiments of the invention, the first frequency band selected cell 230 and the second frequency band selected cell 240 can also comprise at least two diodes and at least one transmission line module (not illustrating) separately, and the first frequency band selected cell 230 and the second frequency band selected cell 240 separately by these diodes therewith the transmission line module select to be connected to one of them of N frequency band matching network.The transmission line module comprises a plurality of transmission lines, and in each operational frequency bands of wireless communication apparatus, one of them of these a little transmission lines is conducting, and all the other transmission lines are for opening circuit.
Fig. 3 is the flow chart that an example embodiment according to the present invention illustrates a kind of wide frequency antenna matching process.Please be simultaneously with reference to Fig. 2 and Fig. 3, in this example embodiment, wide frequency antenna matching process 300 is from step S302, and continues and carry out step S304.In step S304, wide frequency antenna matching process 300 links wide frequency antenna 110 and frequency band matching module 220 by the first frequency band selected cell 230.Behind the step S304, continue and carry out step S306.In step S306, wide frequency antenna matching process 300 links radio-frequency (RF) transceiver 132 and frequency band matching module 220 by the second frequency band selected cell 240.Behind the step S306, continue and carry out step S308.In step S308, wide frequency antenna matching process 300 is according to the present operational frequency bands of wireless communication apparatus, one of them of N frequency band matching network that select to connect frequency band matching module 220 makes wide frequency antenna 110 and the impedance matching of radio-frequency (RF) transceiver 132 in present operational frequency bands.Behind the step S308, continue and carry out step S310, wide frequency antenna matching process 300 so far finishes.What deserves to be mentioned is that at this above-mentioned step S304 can carry out simultaneously to step S308, and above-mentioned order can be changed.
In sum, according to example embodiment of the present invention, the invention provides a kind of wide frequency antenna coalignment and method thereof.The wide frequency antenna coalignment is according to the present operational frequency bands of wireless communication apparatus, by the frequency band selected cell among a plurality of frequency band matching networks, the frequency band matching network that dynamic is chosen corresponding this operational frequency bands connects wide frequency antenna and radio-frequency (RF) transceiver, makes the impedance matching in this operational frequency bands of wide frequency antenna and radio-frequency (RF) transceiver.So, wireless communication apparatus can obtain preferable impedance frequency range, and then improves whole wireless signal transmitting-receiving performance (OTA performance).
Though openly as above with example embodiment; right its is not in order to limiting embodiment of the present invention, and those skilled in the art are in the spirit and scope that do not break away from disclosed embodiment; when doing a little change and retouching, so protection range is as the criterion when looking the appended claims person of defining.
Claims (12)
1. a wide frequency antenna coalignment is applicable to the wireless communication apparatus with a plurality of operational frequency bands, and this wide frequency antenna coalignment comprises:
One frequency band matching module, comprise N frequency band matching network, wherein, these operational frequency bands one of them the time, one of them of this N frequency band matching network makes a wide frequency antenna of this wireless communication apparatus and the impedance matching of a radio-frequency (RF) transceiver, and N is the positive integer more than or equal to 2; And
One first frequency band selected cell links this wide frequency antenna and this frequency band matching module;
One second frequency band selected cell links this radio-frequency (RF) transceiver and this frequency band matching module; And
Wherein, this first frequency band selected cell and this second frequency band selected cell are also according to a present operational frequency bands of this wireless communication apparatus, select to connect one of them of this N frequency band matching network simultaneously, make the impedance matching in this present operational frequency bands of this wide frequency antenna and this radio-frequency (RF) transceiver.
2. this wide frequency antenna coalignment as claimed in claim 1, wherein, this N frequency band matching network be separately corresponding to one of them of these operational frequency bands, and each frequency band matching network is in pairing operational frequency bands, makes the impedance matching of this wide frequency antenna and this radio-frequency (RF) transceiver.
3. this wide frequency antenna coalignment as claimed in claim 1, wherein, N equals a sum of these operational frequency bands.
4. this wide frequency antenna coalignment as claimed in claim 1, wherein, this first frequency band selected cell and this second frequency band selected cell comprise a switch separately, and this first frequency band selected cell and this second frequency band selected cell select to be connected to this N frequency band matching network one of them separately by this switch.
5. this wide frequency antenna coalignment as claimed in claim 1, wherein, this first frequency band selected cell and this second frequency band selected cell comprise at least two diodes and at least one transmission line module separately, and by these diodes with should be at least one the selection of transmission line module be connected to one of them of this N frequency band matching network, wherein, this transmission line module comprises a plurality of transmission lines, and in each operational frequency bands, one of them is conducting for these transmission lines, and all the other transmission lines are for opening circuit.
6. this wide frequency antenna coalignment as claimed in claim 1, wherein, this wireless communication apparatus is a mobile phone, a mobile Internet access device or a wireless network card.
7. wide frequency antenna matching process, be applicable to a wireless communication apparatus with a plurality of operational frequency bands, wherein, this wireless communication apparatus comprises one first frequency band selected cell, one second frequency band selected cell and a frequency band matching module, and this wide frequency antenna matching process comprises:
Link this wide frequency antenna and this frequency band matching module by this first frequency band selected cell;
Link this radio-frequency (RF) transceiver and this frequency band matching module by this second frequency band selected cell;
According to this wireless communication apparatus one present operational frequency bands, one of them of N frequency band matching network of this frequency band matching module of selection connection is to this wide frequency antenna and this radio-frequency (RF) transceiver, make the impedance matching in this present operational frequency bands of this wide frequency antenna and this radio-frequency (RF) transceiver, wherein, N is the positive integer more than or equal to 2.
8. this wide frequency antenna matching process as claimed in claim 7, wherein, this N frequency band matching network separately corresponding to these operational frequency bands one of them, and each frequency band matching network is in pairing operational frequency bands, makes the impedance matching of this wide frequency antenna and this radio-frequency (RF) transceiver.
9. this wide frequency antenna matching process as claimed in claim 7, wherein, N equals a sum of these operational frequency bands.
10. this wide frequency antenna matching process as claimed in claim 7, wherein, this first frequency band selected cell and this second frequency band selected cell comprise a switch separately, and this first frequency band selected cell and this second frequency band selected cell select to be connected to this N frequency band matching network one of them separately by this switch.
11. this wide frequency antenna matching process as claimed in claim 7, wherein, this first frequency band selected cell and this second frequency band selected cell comprise at least two diodes and at least one transmission line module separately, and by these diodes with should be at least one the selection of transmission line module be connected to one of them of this N frequency band matching network, wherein, this transmission line module comprises a plurality of transmission lines, and in each operational frequency bands, one of them is conducting for these transmission lines, and all the other transmission lines are for opening circuit.
12. this wide frequency antenna matching process as claimed in claim 7, wherein, this wireless communication apparatus is a mobile phone, a mobile Internet access device or a wireless network card.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010101058533A CN102136847A (en) | 2010-01-26 | 2010-01-26 | Wideband antenna matching device and method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010101058533A CN102136847A (en) | 2010-01-26 | 2010-01-26 | Wideband antenna matching device and method thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103079146A (en) * | 2012-12-27 | 2013-05-01 | 青岛歌尔声学科技有限公司 | Matching circuit for antenna of Bluetooth headset |
| CN103731175A (en) * | 2012-10-10 | 2014-04-16 | 深圳富泰宏精密工业有限公司 | Antenna assembly and wireless communication device provided with antenna assembly |
| CN105406176A (en) * | 2015-12-09 | 2016-03-16 | 广东欧珀移动通信有限公司 | Antenna system for mobile terminal and mobile terminal |
| CN111351807A (en) * | 2020-04-18 | 2020-06-30 | 李赞 | Dielectric spectroscopy microscopy using near-field microwaves |
| CN115458954A (en) * | 2022-09-19 | 2022-12-09 | 航天恒星科技有限公司 | Transmitting-receiving common-caliber multi-beam active phased array antenna with expandable brick type framework |
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| TWI261977B (en) * | 2005-03-11 | 2006-09-11 | Mitac Int Corp | Wireless communication system with plural matching devices |
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| US20080238789A1 (en) * | 2007-03-30 | 2008-10-02 | Sony Ericsson Mobile Communications Ab | Antenna interface circuits including multiple impedance matching networks that are respectively associated with multiple frequency bands and electronic devices incorporating the same |
| TW200926504A (en) * | 2007-12-12 | 2009-06-16 | Wistron Neweb Corp | Transceiver device of wireless signals and related device |
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| CN2046694U (en) * | 1988-09-12 | 1989-10-25 | 中国人民解放军57351部队 | Pin diode broad band switch |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103731175A (en) * | 2012-10-10 | 2014-04-16 | 深圳富泰宏精密工业有限公司 | Antenna assembly and wireless communication device provided with antenna assembly |
| CN103079146A (en) * | 2012-12-27 | 2013-05-01 | 青岛歌尔声学科技有限公司 | Matching circuit for antenna of Bluetooth headset |
| CN105406176A (en) * | 2015-12-09 | 2016-03-16 | 广东欧珀移动通信有限公司 | Antenna system for mobile terminal and mobile terminal |
| CN111351807A (en) * | 2020-04-18 | 2020-06-30 | 李赞 | Dielectric spectroscopy microscopy using near-field microwaves |
| CN115458954A (en) * | 2022-09-19 | 2022-12-09 | 航天恒星科技有限公司 | Transmitting-receiving common-caliber multi-beam active phased array antenna with expandable brick type framework |
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Application publication date: 20110727 |