CN101305496B - Dual-band antenna front-end system - Google Patents
Dual-band antenna front-end system Download PDFInfo
- Publication number
- CN101305496B CN101305496B CN2006800415624A CN200680041562A CN101305496B CN 101305496 B CN101305496 B CN 101305496B CN 2006800415624 A CN2006800415624 A CN 2006800415624A CN 200680041562 A CN200680041562 A CN 200680041562A CN 101305496 B CN101305496 B CN 101305496B
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- antenna
- signal
- frequency band
- reception
- circuit
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/28—Combinations of substantially independent non-interacting antenna units or systems
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
- H01Q13/08—Radiating ends of two-conductor microwave transmission lines, e.g. of coaxial lines, of microstrip lines
- H01Q13/085—Slot-line radiating ends
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- Variable-Direction Aerials And Aerial Arrays (AREA)
- Transceivers (AREA)
Abstract
The present invention relates to a multiple-port dual- band antenna system and the associated interface formed by DPDT or SPDT switches, that can be integrated on one and the same multi-layer structure.
Description
Technical field
The present invention relates to a kind of by several dual-ported dual-band antennas and be used to receive and launch the system that the interface of electromagnetic signal forms.The invention still further relates to the arbitrary signal treatment facility that is equipped with this system.
Background technology
Now, radio modem can be used in the base station and be equipped with between the terminal of unruled card setting up link.Most products on the market are followed the IEEE802.11b standard of in the 2.4GHz frequency band, working.This standard allows the bit rate up to 11Mbps.
To higher bit rate, the highest in theory 54Mbps that can be, this product needed is followed the IEEE802.11g standard and the IEEE802.11a standard of in the 5GHz frequency band, working.
Some products are simultaneously according to b and g standard operation.Other products are according to a standard operation.Finally, because will be with the existing product compatibility and in order to use maximum available, most base stations are these three operating suchs with all simultaneously, and promptly therefore IEEE802.11a, b and g need and can on 2.4GHz and 5GHz frequency, work.
Document US 6 246 377 has been described the signal transmitting and receiving machine in a kind of 2.4-5GHz frequency band.Use the broad-band antenna of two Vivaldi types respectively, one is used for receiving, and another is used for emission, thereby avoids the use of the RX/TX switch.Yet this system does not provide antenna diversity.
For robustness and the scope of improving Radio Link, can have that to be at least 2 rank antenna diversities be favourable.Can be needed dual receiving subsystem by the diversity scheme that reality is considered.
At this moment, do not exist to having the requirement of satisfying various standards and the scheme of the system of the antenna diversity of the dual receiving subsystem of needs not.
Summary of the invention
Therefore, the present invention proposes a kind of dual-band antenna system and associated interface, be used for utilizing wideband antenna diversity to transmit and receive according to different standards (IEEE802.11a, b and g).
The present invention has advised a kind of dual-band antenna system with branch collection, is used to transmit and receive electromagnetic signal, and this antenna system comprises at least two antennas and interface arrangement, and this interface arrangement is connected to signal processing circuit with antenna chains.Each antenna all has two independent ports, the reception in each port and the definite frequency band and/or launch correspondingly, and said interface arrangement can be used for selecting and launching the signal of confirming in the frequency band.
Preferably, this system comprises two double frequency band aerials with two independent ports, and this interface arrangement comprises at least one switching device at least one frequency band in said two frequency bands, thereby guarantees the branch collection of the reception and the emission of signal in this frequency band.This switching device is preferably DPDT (DPDT) switch.
According to variant of the present invention, this system comprises three double frequency band aerials with two independent ports, and this interface arrangement comprise with two frequency bands in the receiving port associated switch arrangement, thereby guarantee the branch collection of the reception in these frequency bands.
Preferably, this switching device is SPDT (single-pole double throw) switch.
In an embodiment, can utilize branch collection and be incorporated in to the antenna that two independent frequency bands receive on the side of ground level of sandwich construction, this side is relative with the layer of power line that supports receiving circuit and switch; And the third antenna that can launch is realized on the opposite side of ground level, and this opposite side is relative with the layer of power line that supports radiating circuit and switch.In another embodiment, can utilize branch collection and the antenna that receives to two independent frequency bands and the third antenna that can launch are incorporated on the side of ground level of sandwich construction.
According to variant of the present invention, this interface arrangement comprises and is used for amplifier that the signal of launching/receiving towards signal processing circuit is amplified.
Preferably, this antenna is the slot aerial of the Vivaldi type of supplying power through electromagnetic coupled, and the reception of signal and emission and the standard that is under the jurisdiction of standard IEEE 802.11a, b or g compatibility mutually.
The invention still further relates to a kind of signal handling equipment that comprises this antenna system.
Description of drawings
According to the hereinafter description taken together with the accompanying drawings, above-mentioned characteristic of the present invention and advantage and other will become apparent, wherein:
-Fig. 1 a representes first configuration according to system of the present invention, and Fig. 1 b representes to support the sectional view according to the substrate of the antenna of this first configuration;
-Fig. 2 a representes second configuration according to system of the present invention, and Fig. 2 b representes to support the sectional view according to the substrate of the antenna of this second configuration;
-Fig. 3 a and 3b represent the 3rd configuration according to system of the present invention, and Fig. 3 a representes receiver side view (Rx), and Fig. 3 b representes emitting side view (Tx), and Fig. 3 c representes to support the sectional view according to the multilager base plate of the antenna of the 3rd configuration.
Embodiment
In order to simplify description, use identical reference marker to represent to have the element of identical function in the accompanying drawing.
In three concrete configurations, antenna front-end system 1 according to the present invention is made up of antenna element 2 and another so-called interface (or front end) parts 3, and is positioned at the upper reaches of RFIC (RF IC) circuit 4 of signal reception/emission subsystem.This front end system 1 has and is used for 4 input/output terminals linking to each other with the RFIC circuit, corresponds respectively to the reception Rx and emission Tx port at 2.4GHz frequency place, and the reception Rx at 5GHz frequency place and emission Tx port.
According to first embodiment shown in Figure 1; System 1 comprises two broadbands or double frequency band aerial A1 and A2; Covered the 2.4GHz that distributed by a, b and g standard and all frequency bands at 5GHz place, allowed the simple reception at 5GHz frequency place and the reception that only utilizes 2 rank antenna diversities at 2.4GHz frequency place.This has vertical radiation to slot aerial (slot antenna), Vivaldi type for example, and A1 and A2 have independent dual-port N1 and the N2 that are used for 2.4GHz and 5GHz frequency, and this antenna receives in these frequency bands and transmits allowing.
The port N1 of antenna A1 and the port N1 of antenna A2 link to 2.4GHz Tx and the 2.4GHz Rx terminal of RFIC via interface 31.For example, this interface 31 is dual input, the dual output switching circuits with the arrowband DPDT type in the 2.4GHz frequency band.Among this switching circuit managing antenna A1 and the A2 in 2.4GHz port N1 of each and the RFIC circuit and emission Tx or the signal that receives between corresponding each the 2.4GHz port of Rx port switch.Therefore, the management of this switching circuit is to the selection of a 2.4GHz receive channel of antenna (antenna diversity), or to the selection of a 2.4GHz send channel of or other antennas.
The 5GHz port N2 that is used to receive of the 5GHz port N2 that is used to launch of antenna A1 and antenna A2 directly links with the 5GHz Tx and the Rx port of RFIC circuit respectively.This interface scheme only uses single external module, i.e. DPDT switching circuit, and it can merge to realizing and will describe this below in the structure that this antenna advises.In addition, this assembly is operated under low frequency and narrow band mode, because it only is limited in the 2.4GHz frequency band.Therefore, reduced the inherent loss of assembly.
Fig. 1 b representes to support the sectional view according to the substrate of the antenna of this first configuration.Dwi hastasana is formed on the substrate S, for example very cheap substrate as FR4.The ground level M that comprises the section of two antennas is positioned on the bottom of substrate.Through being electromagnetically coupled to etched little band power line on the substrate offside, supply power to the Vivaldi antenna.Therefore, top layer A is used for power circuit and switch interface 31.
Possibly, if desired, in order to launch, the outside power amplifier 37 of RFIC can be connected to the emission terminal Tx of RFIC circuit, to amplify armed signal.Similarly, if desired, in order to receive, low noise amplifier 38 can be connected to the reception terminal of RFIC circuit, to amplify the signal that is received.
Fig. 2 a representes second configuration according to system of the present invention, needs the antenna diversity on 2.4GHz and the 5GHz for this reason.The slot aerial of Vivaldi type makes it possible to receive the signal in these frequency bands to port N1 and N2 that A1 and A2 have two independent 2.4GHz and 5GHz respectively.The 2.4GHz port N1 of antenna A1 and A2 and 5GHz port N2 are a plurality of ports.They are used for transmitting and receiving of data, and link to coupling circuit 32 and 33, this coupling circuit 32 and 33 and the RFIC circuit form interface unit.
For example, this circuit 32 is the arrowband DPDT switching circuits in the 2.4GHz frequency band.It can be used among antenna A1 and the A2 each is switched to and Tx or corresponding each input of Rx port.Therefore, the selection that the management of this switching circuit is gone up a receive channel of antenna (antenna diversity) to 2.4GHz is perhaps to the selection of a send channel of or other antennas.
Similarly, for example circuit 33 is the arrowband DPDT switching circuits in the 5GHz frequency band.It can be used among antenna A1 and the A2 each is switched to Tx or corresponding each input of Rx port with RFIC circuit 4.Therefore, the selection that the management of this switching circuit is gone up a receive channel of antenna to 5GHz is perhaps to the selection of a send channel of or other antennas.
This scheme is used two external modules, and these assemblies can merge in the structure of being advised to the realization of this antenna with the described mode of Fig. 2 b, and it is identical with Fig. 2 a.
Possibly, if desired, in order to launch, the outside power amplifier 37 of RFIC can be connected to the emission terminal Tx of RFIC circuit, to amplify armed signal.Similarly, if desired, in order to receive, low noise amplifier 38 can be connected to the reception terminal of RFIC circuit, to amplify the signal that is received.
Fig. 2 b representes to support the sectional view according to the substrate of the antenna of this second configuration, and its mode is with identical during first disposes.Top layer A is used to realize power circuit and two switch interfaces 32 and 33.
Fig. 3 representes the 3rd configuration according to system of the present invention, needs the antenna diversity on 2.4GHz and the 5GHz for this reason.The 3rd configuration is described by the realization on the sandwich construction with 3 antennas shown in Fig. 3 c.In a side of this structure, the slot aerial that forms the Vivaldi type has two independent 2.4GHz and 5GHz port N1 and N2 to A1 and A2, only allows to receive the signal in these frequency bands.Interface 34 makes it possible to selective reception signal from two signals of 2.4GHz frequency reception.Similarly, interface 35 makes it possible to selective reception signal from two signals of 5GHz frequency reception.Switch such as SPDT (single-pole double throw) circuit is represented suitable switch.This interface makes it possible to receive the signal on 2.4GHz and the 5GHz, and it is formed by two SPDT circuit 34 and 35, is therefore minimized, and this is owing to no longer need the send-receive port be coupled to CF.These circuit can merge on the side of sandwich construction, shown in Fig. 3 c.
The slot aerial that is intended to launch the 3rd Vivaldi type of the signal in 2.4GHz and the 5GHz frequency band is positioned on the opposite side of substrate (Fig. 3 c).The input terminal Tx of armed signal is directly linked to the different port of this antenna.Under emission mode, RFIC element and the direct coupling between the antenna of emission subsystem makes it possible to eliminate before the loss that the existence owing to the DPDT circuit causes.
Can realize the Vivaldi antenna with the mode shown in Fig. 3 c.Etching is used for dividing the antenna that collects two Vivaldi types of carrying out Data Receiving at 2.4GHz and the utilization of 5GHz frequency band on the top side of ground level M, is positioned on two limits of 90 ° of the traditional F R type multi-layer PCB that supports motherboard.Etching third antenna on the bottom side is positioned at the corner of FR4 type sandwich construction.Through being electromagnetically coupled to etched little band power line on the substrate offside, supply power to the Vivaldi antenna.The power circuit A that is used to launch
TXBe positioned on the bottom side of sandwich construction of substrate, and the power circuit A that is used to receive
RXBe positioned on the top side of sandwich construction of substrate.In the better insulation between the etched power circuit that has the also feasible power circuit that can be provided for launching of structure of three Vivaldi antennas and be used to receive on the both sides of public ground level.
Simplify other layouts of associated interface thereby it is contemplated that to be separated transmitting and receiving of data.
As stated, possibly, if desired, the low noise amplifier that is used to receive 38 be used for the terminal that emitted power amplifier 37 can be connected to the RFIC circuit.
Claims (3)
1. dual-band antenna system; Be included in three double frequency band aerials (A1, A2, A3) and the interface arrangement (3) realized on the sandwich construction; Each antenna has two independent ports (N1, N2), is used for receiving or launching the signal of two definite frequency bands, and
Said interface arrangement (3) comprise with two frequency bands in the receiving port associated switch arrangement, thereby guarantee branch collection to the reception of the signal in each frequency band,
Said antenna system is characterised in that: two (A1, A2) in said three double frequency band aerials can realize utilizing the reception of signal diversifying; Said switching device is realized on a side of said sandwich construction; And the 3rd double frequency band aerial (A3) on the opposite side of said sandwich construction, realize, and be directly linked to signal processing circuit.
2. antenna system according to claim 1 is characterized in that, said switching device (34,35) is a single-pole double throw SPDT switch.
3. antenna system according to claim 2 is characterized in that, the reception of signal is compatible mutually with the standard that is under the jurisdiction of standard IEEE 802.11a, b or g with emission.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0512148A FR2894079A1 (en) | 2005-11-30 | 2005-11-30 | Dual-band antenna system for transmitting and receiving electromagnetic signals with diversity, comprises at least two antennas, each having two separate ports, and interface to select and transmit signals in determined frequency band |
| FR0512148 | 2005-11-30 | ||
| FR0650299 | 2006-01-27 | ||
| FR0650299 | 2006-01-27 | ||
| PCT/EP2006/069011 WO2007063066A1 (en) | 2005-11-30 | 2006-11-28 | Dual-band antenna front-end system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101305496A CN101305496A (en) | 2008-11-12 |
| CN101305496B true CN101305496B (en) | 2012-11-21 |
Family
ID=37301775
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2006800415624A Expired - Fee Related CN101305496B (en) | 2005-11-30 | 2006-11-28 | Dual-band antenna front-end system |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN101305496B (en) |
| FR (1) | FR2894079A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105958186A (en) * | 2010-10-08 | 2016-09-21 | 康普技术有限责任公司 | Antenna having active and passive feed networks |
| US20220416399A1 (en) * | 2019-12-05 | 2022-12-29 | Saint-Gobain Glass France | Vehicle pane |
| CN113471688B (en) * | 2021-06-15 | 2022-11-29 | 西安电子科技大学 | Dual-frequency antenna loaded by gradual change slot line |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1493094A (en) * | 2001-02-23 | 2004-04-28 | 汤姆森许可贸易公司 | Device for receiving and/or transmitting electromagnetic signals |
| CN1585191A (en) * | 2003-07-02 | 2005-02-23 | 汤姆森许可贸易公司 | Dual-band antenna with twin port |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6686886B2 (en) * | 2001-05-29 | 2004-02-03 | International Business Machines Corporation | Integrated antenna for laptop applications |
| FR2826209A1 (en) * | 2001-06-15 | 2002-12-20 | Thomson Licensing Sa | DEVICE FOR RECEIVING AND / OR TRANSMITTING ELECTROMAGNETIC SIGNALS WITH RADIATION DIVERSITY |
| JP2004007559A (en) * | 2002-04-25 | 2004-01-08 | Matsushita Electric Ind Co Ltd | Multiple-resonance antenna, antenna module, and radio device using the multiple-resonance antenna |
| FR2861222A1 (en) * | 2003-10-17 | 2005-04-22 | Thomson Licensing Sa | Dual-band planar antenna for use in wireless mobile network, has outer and inner annular slots supplied by two common supply line that cuts across slots in directions of respective protrusions |
-
2005
- 2005-11-30 FR FR0512148A patent/FR2894079A1/en active Pending
-
2006
- 2006-11-28 CN CN2006800415624A patent/CN101305496B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1493094A (en) * | 2001-02-23 | 2004-04-28 | 汤姆森许可贸易公司 | Device for receiving and/or transmitting electromagnetic signals |
| CN1585191A (en) * | 2003-07-02 | 2005-02-23 | 汤姆森许可贸易公司 | Dual-band antenna with twin port |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2894079A1 (en) | 2007-06-01 |
| CN101305496A (en) | 2008-11-12 |
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Granted publication date: 20121121 Termination date: 20181128 |
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