CN1870799A - Mobile wireless communications device comprising multi-frequency band antenna and fabrication method - Google Patents
Mobile wireless communications device comprising multi-frequency band antenna and fabrication method Download PDFInfo
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- CN1870799A CN1870799A CNA2006100908765A CN200610090876A CN1870799A CN 1870799 A CN1870799 A CN 1870799A CN A2006100908765 A CNA2006100908765 A CN A2006100908765A CN 200610090876 A CN200610090876 A CN 200610090876A CN 1870799 A CN1870799 A CN 1870799A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
- H01Q9/04—Resonant antennas
- H01Q9/30—Resonant antennas with feed to end of elongated active element, e.g. unipole
- H01Q9/42—Resonant antennas with feed to end of elongated active element, e.g. unipole with folded element, the folded parts being spaced apart a small fraction of the operating wavelength
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
- H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
- H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
- H01Q1/242—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use
- H01Q1/243—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use with built-in antennas
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
- H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/30—Arrangements for providing operation on different wavebands
- H01Q5/307—Individual or coupled radiating elements, each element being fed in an unspecified way
- H01Q5/342—Individual or coupled radiating elements, each element being fed in an unspecified way for different propagation modes
- H01Q5/357—Individual or coupled radiating elements, each element being fed in an unspecified way for different propagation modes using a single feed point
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q7/00—Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop
Abstract
A mobile wireless communications device may include a housing and a multi-frequency band antenna carried within the housing. The multi-frequency band antenna may include a main loop conductor having a gap therein defining first and second ends of the main loop conductor, a first branch conductor having a first end connected adjacent the first end of the main loop conductor and having a second end defining a first feed point, and a second branch conductor having a first end connected adjacent the second end of the main loop conductor and a second end defining a second feed point. A third branch conductor has a first portion within the main loop conductor, and a second portion connected to the second feed point. A tuning branch conductor may have a first end connected to the main loop conductor between the respective first ends of the first and second branches.
Description
Technical field
The present invention relates to the field of communication equipment, more specifically, relate to mobile radio communication apparatus and correlation technique.
Background technology
Cellular communication system continues to popularize, and has become the necessary part of individual and business communication.Cell phone allows the user almost can both carry out and receive audio call Anywhere what they advanced to.And along with the growth of cellular telephony, the function of cellular device is also developed.For example, now, many cellular devices comprise the PDA(Personal Digital Assistant) feature, such as calendar, address book, task list etc.And for example, such multifunctional equipment also can allow the user wirelessly to send and receive Email (email) message and access the Internet via cellular network and/or wireless lan (wlan).
Even so, because the continuation of functionality of cellular communications devices increases, so concerning the user, be easier to and the also sustainable growth of demand of the more mini-plant that the user that is more convenient for carries.As a result, obtaining extensively universal a kind of cellular-telephone type is collapsible or " renovating " formula phone.Typically, liding machine comprises upper casing (upper housing) with display and loud speaker and the lower casing (lower housing) or the lower plate (flap) of carrying microphone.According to particular model, the keyboard on the such words machine not only can upper casing, but also can be at lower casing.Lower plate links to each other with upper casing by hinge, makes when not using lower casing, they can be folded up with compacter.
An example of liding machine is disclosed in the U.S. Patent No. 5,337,061 of authorizing people such as Pye.Phone has two antennas, and first is installed on the lower plate and comprises ground plane and by the active unipole antenna from the coaxial feeder feed of phone internal circuit.Main part or the first half of lower plate and shell are pivotally connected, and folding to main part when not in use.The similar antenna of another root is installed in the main part, and two antennas all link to each other with transceiver circuit in the phone.Designing antenna with under the situation that does not need separate circuit elements, is provided at the system of effectively switching between antenna to introduce accurate mismatch (deliberate mismatch).
Cellular antenna configurations can also greatly influence the size of population or the floor space (footprint) of phone.Typically, cell phone has the antenna structure of supporting the communication in a plurality of working bands.Use dissimilar antennas to be used for mobile device, for example, spirality, " F " shape, folded dipole and retractable antenna.Typically, spirality and telescopic antenna are used for the outside of mobile device, that is, and and in the outside of mobile device, and typically, close its top of shape of falling F and folded dipole in mobile device housing or shell (in the inside of mobile device).
Usually in fact, built-in aerial allows the floor space of cellular floor space less than the mobile phone with external antenna.And for the reason of machinery and ergonomics, built-in aerial also is better than external antenna.Built-in aerial also is subjected to the protection of mobile device shell, thereby more durable than external antenna.External antenna can be trouble and make mobile device be difficult to use, especially in the environment of the confined space.
Yet a latent defect of the built-in cellular phone antennas of typical case is, when phone in use the time, built-in aerial relatively approaches user's head.When the same day, the line-spacing user's body was near more, typically, the radio frequency of absorption of human body (RF) energy emission increased.When using mobile phone, the RF energy total amount that is absorbed by the body is called specific absorption rate (SAR), and typically, the admissible SAR of government regulation restriction mobile phone that is suitable for is to guarantee safe user RF energy exposure grade.
The U.S. Patent No. 6,741,215 of authorizing people such as Grant has proposed a kind of trial that is used for reducing from the radioactive exposure of cellular phone antennas.This patent disclosure have the multiple cell phone of built-in and external antenna configuration, wherein, antenna is positioned at the bottom of phone, promptly by antenna far being left user's brain, reduces the radiation intensity that the user is subjected to.And in certain embodiments, the shell of phone forms the obtuse angle, makes the bottom of shell leave user's face.
The antenna configurations of even now can reduce radioactive exposure, but still need to further develop antenna configurations, especially built-in aerial, so that further reduce overall device size, relatively low SAR value still is provided simultaneously.
Summary of the invention
A kind of Wireless Telecom Equipment can comprise shell and the multiband antenna that is carried in the shell.More specifically, multiband antenna can comprise: have the main loop conductor (main loopconductor) in slit, wherein, the slit defines first end and second end of main loop conductor; First branch conductors (branch conductor) has near first end first end of the main loop conductor of being connected and has second end that defines first load point; And second branch conductors, have near first end second end of the main loop conductor of being connected and second end that defines second load point.And, the second portion that the 3rd branch conductors has the first in main loop conductor and links to each other with second load point.Antenna can also comprise tuning branch conductors, has first end that links to each other with main loop conductor, and first end of described tuning branch conductors is between first and second branch conductors, first end separately.
Therefore, can arrange multiband antenna, required performance still is provided when occupying relatively little area.And antenna configurations can be positioned at printed circuit board (PCB) (PCB) the mobile device bottom of (as, cell phone) easily, and this helps to meet suitable SAR requirement.This structure also can realize the less influence of the obstruct of user's hand to antenna performance.That is to say that typically, the user holds the middle and upper part of cell phone phone shell, therefore compare that the user more may cover their hand on such antenna with near the situation of Antenna Positioning shell the latter half.
As example, the first of the 3rd branch conductors can comprise ring and/or paster.And the second portion of the 3rd branch conductors can pass through second branch conductors, links to each other with second load point.
Main loop conductor can have the shape that is roughly rectangle, has first and second relative limits and the first and second relative ends, and the slit can be in first limit of main loop conductor.And first branch conductors, second branch conductors and tuning branch conductors first end separately can link to each other with first limit of main loop conductor.Particularly, for example, main loop conductor can comprise non-flat portion, with further saving space.
Advantageously, main loop conductor can have at least one tuning feature.As example, so tuning feature can comprise indentation (meanders), Z-shaped, annular and other geometry.First, second and/or tuning branch conductors also can comprise similar tuning feature.Mobile radio communication apparatus can also comprise the dielectric substrate (dielectricsubstrate) that supports multiband antenna, and in main loop conductor, first and second branch conductors and the tuning branch conductors each can comprise the conducting path that is positioned at separately on the dielectric substrate.Mobile radio communication apparatus can also comprise by dielectric substrate radio transceiver circuitry carrying and that link to each other with multiband antenna.
Method scheme of the present invention is used to make mobile radio communication apparatus, and can comprise: shell is set and locatees aforesaid multiband antenna in the enclosure.
Description of drawings
Fig. 1 is the schematic block diagram according to mobile radio communication apparatus of the present invention, shows the specific internal components of mobile radio communication apparatus.
Fig. 2 is the front view of mobile radio communication apparatus shown in Figure 1.
Fig. 3 is the general schematic diagram that the multiband antenna of the mobile radio communication apparatus that is used for Fig. 1 is described.
Fig. 4-the 6th, the schematic diagram of the different embodiment of tuning feature, these tuning features can be used for the various piece of antenna shown in Figure 3.
Fig. 7 is the perspective view that is used for the embodiment of the dielectric substrate of mobile radio communication apparatus shown in Figure 1 and associated antenna.
Fig. 8 is the rearview of dielectric substrate shown in Figure 7.
Fig. 9 and 10 is the perspective views that are used for another embodiment of the dielectric substrate of mobile radio communication apparatus and associated antenna, illustrates and look up from the bottom of substrate from the overhead view of substrate respectively to illustrate.
Figure 11 and 12 is the flow charts that are used to make the method for mobile radio communication apparatus according to the present invention.
Figure 13 is to use the schematic diagram of typical mobile radio communication apparatus of the present invention.
Figure 14-the 16th, the schematic diagram of the optional embodiment of multiband antenna shown in Figure 3.
Figure 17 is the gain-frequency curve chart of antenna shown in Figure 14.
Embodiment
The preferred embodiments of the present invention shown in the drawings below with reference to accompanying drawings the present invention are more fully described.Yet the present invention can be by the multiple multi-form specific implementation of coming, and should not be construed as and be confined to embodiment as described herein.But, these embodiment are provided, so that for a person skilled in the art, the disclosure will be thorough and completely and will give expression to scope of the present invention all sidedly.Identical reference number is represented components identical in whole specification, and uses ' number indicate element similar among the different embodiment.
Now, more specifically see figures.1.and.2, at first the mobile radio communication apparatus such as mobile cellular equipment 20 according to the present invention is described.Cellular device 20 schematically comprises shell 21 with the first half 46 and lower part 47 and the main dielectric substrate 67 such as printed circuit board (PCB) (PCB) substrate that is carried by shell.The shell 21 that illustrates is fixed shells, for example, as be used for many cell phones towards renovating or the shell of slip lid.Yet, also can use these and other shell mechanism.
Person of skill in the art will appreciate that the multiple circuit 48 of dielectric substrate 67 carrying, as microprocessor, memory, one or more transceiver (as, honeycomb, WLAN etc.), audio frequency and power supply circuits etc., and will be further discussed below.Preferably, the battery (not shown) is used for to circuit 48 power supplies also by shell 21 carryings.
And, audio frequency output translator 49 (as, loud speaker) carry by shell 21 the first half 46, and link to each other with circuit 48.Preferably, the one or more user interface facilities such as keyboard 23 are also carried by shell 21, and link to each other with circuit 48.Other example of user's input interface device comprises, roller 37 and back 36.It will be appreciated, of course, that also can use in other embodiments other user's input interface device (as, writing pen or touch screen interface).
More specifically, typically, the user will hold the first half of shell 21, be close to very much head, make audio frequency output translator 49 directly press close to ear.Yet audio frequency input converter (as, microphone) the latter half 47 of residing shell 21 does not need to be positioned at the place of the mouth of directly being close to the users, and typically, away from user's mouth.That is to say, hold the audio frequency input converter near user's mouth, not only can be uncomfortable concerning the user, and can make user's audio distortions in some cases.In addition, advantageously, the latter half 47 that antenna 45 is positioned near shell 21 can also make antenna further from user's brain.
Another important benefits that antenna 45 is positioned at the latter half 47 of close shell 21 is to realize the less influence of the obstruct of user's hand to antenna performance.That is to say that typically, the user holds the middle and upper part of cell phone phone shell, so compare that the user more may cover their hand on such antenna with near the situation the latter half 47 that antenna is installed in shell 21.In addition, can be by antenna 45 being positioned at the latter half 47 near shell 21, the more reliable performance that obtains.
Another benefit of this structure is, for one or more auxiliary I/O (I/O) equipment 50 that will be carried on shell the first half 46 places provides more space.And, by antenna 45 is separated with auxiliary I/O equipment 50, reduced the interference between them.
Just as skilled in the art will recognize, some examples of auxiliary I/O equipment 50 comprise, be used to provide the WLAN communication capacity WLAN (as, bluetooth, IEEE 802.11) antenna and/or be used to provide stationkeeping ability global position system (as, GPS, Galileo etc.) antenna.Other example of auxiliary I/O equipment 50 comprise the second audio frequency output translator (as, the loud speaker that is used for speakerphone operation), and be used to provide the digital camera ability pick-up lens, electronic device connector (as, USB, earphone, secure digital (SD) or storage card etc.).
Should be noted that to be used for assisting the term " I/O " of I/O equipment 50 to represent that these equipment can have input and/or fan-out capability here, but needn't have the input and output ability in all embodiments.That is to say, for example, can receive only the optics input such as the such equipment of pick-up lens, and earphone jack can only provide audio frequency output.
At first pressing or activating optional function key 25, following line unit 26 can also be used for input " * " symbol.Similarly, by at first activating optional function key 25, space bar 27, switch key 28 and backspace key 30 can be used for input " 0 " and " # " separately.Just as skilled in the art will recognize, keyboard 23 also schematically comprises transmission key 31, end key 32 and quick (being menu) key 39, is used to initiate cellular calls.
And the symbol arrangement on each button 24 is at top line or end row.When the user does not at first press optional function key 25, and directly pushed button 24 o'clock, the symbol in the input end row, and, import the top line symbol by at first pressing the optional function key.As shown in Figure 2, many symbol keys 24 are arranged in to be positioned at and send and the first three rows of the keyboard 23 that end key 31,32 is following.And, arrange letter character on each button with limit standard QWERTY layout.That is to say that the letter on the keyboard 23 occurs with three-row format, the letter in every row has order and the relative position identical with the standard qwerty keyboard.
Every capable button (comprising fourth line function key 25-29) is arranged as five row.Having on the multifunction push key 24 of second, third of first, second, third row, the 4th row can be by at first activating the numerical chracter that optional function key 25 visits (promptly 1 to 9).Just as skilled in the art will recognize, as mentioned above, with following line unit, space bar and the switch key 26,27,28 of importing " * ", " 0 " and " # " by at first activating optional function key 25 respectively, standard telephone keypad layout that this cover has been pressed key definition is as can finding in the conventional keys phone.
In addition, advantageously, mobile cellular equipment 20 not only can be used as traditional cellular phone, and can be advantageously used in sending and/or receive data by honeycomb or other network, such as internet and e-mail data.Certainly, in other embodiments, also can use other keyboard configuration.Just as skilled in the art will recognize, repeatedly knock (multi-tap) or predict that input pattern (predictive entry mode) can be used to key in Email etc.
Referring now to Fig. 3 to 10, the exemplary embodiments of antenna 45 is discussed.Preferably, antenna 45 is multiband antennas that transmit and receive characteristic that enhancing is provided by a plurality of operating frequencies.More specifically, designing antenna 45 with on wide relatively bandwidth and a plurality of cellular band, provides high-gain, required impedance matching, the also satisfied SAR requirement that is suitable for.As example, although antenna 45 also can be used for other bands/frequencies, but preferably, antenna 45 is worked on five frequency bands, promptly, 850MHz global system for mobile communications (GSM) frequency band, 900MHz GSM frequency band, DCS frequency band, PCS frequency band and WCDMA frequency band (that is, up to about 2100MHz).
Although antenna 45 can realize that also for conserve space, advantageously, antenna 45 is realized with three dimensional form, shown in Fig. 7 to 10 with two dimension or plane embodiment.Antenna 45 schematically comprises the first 61 on the PCB 67.Second portion 62 is bent to L shaped dielectric from PCB 67 and extends on (dielectric extension) or the Antenna Positioning framework (retainer frame) 63, and L shaped dielectric is extended or Antenna Positioning framework 63 comprises from PCB 67 outward extending vertical components 51 and from the vertical component of PCB and stretches out and be positioned at the outer outstanding part (overhang portion) 68 on the part of closing on of PCB.In certain embodiments, if desired, also sidewall 55 can be positioned the opposite end (opposing end) of L shaped dielectric extension 63, so that additional support (seeing Fig. 7 and 9) to be provided.
The second portion 62 of antenna 45 schematically comprises the main ring antenna conductor 64 with slit, defines first and second ends 52,53 of main loop conductor.The first 61 of antenna 45 schematically comprises first branch conductors 70, second branch conductors 71 and tuning branch conductors 72.More specifically, first branch conductors 70 has near first end the main loop conductor of being connected 64 first ends 52 and second end that defines first load point, in the example that illustrates, second end and signal source 54 (as, transceiver) link to each other.Second branch conductors 71 has near first end the main loop conductor of being connected 64 second ends 53 and second end that defines second load point, in the example that illustrates, and second end link to each other with the ground plane conductor 69 of PCB (Fig. 8).
Tuning branch conductors 72 has first end that links to each other with main loop conductor 64, and first end of tuning branch conductors 72 is between first and second branch conductors, first end separately.That is to say that certain some place of first end of tuning branch conductors 72 length between first and second branch conductors 70,71 links to each other with main loop conductor 64.Frequency parameter not being produced under the situation of significant impact, can change the position of branch conductors 72 between part 77 and 78 easily.In this example, main loop conductor 64 is roughly rectangle, has first limit that comprises part 75-78 and slit, relative second limit 74 and first and second ends 79,80 respect to one another.Shown in Fig. 7-10, the order wire circuit path that can use printing or have a pattern forms first and second parts 61,62 of antenna 45.
Although in the illustrated embodiment, first branch conductors 70, second branch conductors 71 and tuning branch conductors 72 first end separately link to each other with first limit of main loop conductor 64, and other configuration also is possible.For example, tuning branch conductors 72 can link to each other with second limit 74 or link to each other with in first and second ends 79,80 any one.
As mentioned above, the second portion 62 of antenna 45 can be positioned on the vertical component 51 of L shaped dielectric extension 63.Advantageously, this allows to reduce significantly total floor space (that is circuit) of antenna 45 on the top side of PCB 67.And, on the various piece of main loop conductor 64 also can be extended 63 outer outstanding part 68 around dielectric, with further conserve space.Yet, should be noted that in a particular embodiment, if enough spaces are arranged, can realize antenna 45 (that is, first and second parts 61,62 are at grade) with two-dimensional approach; And just as skilled in the art will recognize, also can use other 3D configuration.
Usually in fact, branch 70,71 and 72 length are used for being provided with the central task frequency.Branch conductors 70 and 72 square indentation (square meandering) or back and forth (back-and-forth) pattern be the tuning feature that can be used for changing electrical length, wherein, electrical length changes centre frequency.And the difformity of branch 70,71,72 also can be used for being provided with different frequency.For example, except indentation shown in Fig. 3 and linear, these branches can use other geometry, comprise the branch 41 (Fig. 4 B) of zigzag or triangle indentation 40 (Fig. 4 A), band etc.Just as skilled in the art will recognize, different shape and combination also can be used to the frequecy characteristic that provides different.
The part 73 of main loop conductor 64 also can be used for the Control work frequency.Part 73 can be used different shapes and/or cut-outs.Tuning feature so for example can comprise " dog bone " shape 90 (Fig. 5 A), half dog bone shape 91 (Fig. 5 B), hair clip shape 92 (Fig. 5 C), two hair clip shape 93 (Fig. 5 D), band hair clip shape 94 (Fig. 5 E), indentation 95 (Fig. 5 F) and zigzag 96 (Fig. 5 G).And in certain embodiments, except above-mentioned various piece, all main loop conductor 64 can also adopt one of above-mentioned or other shape.
Just as skilled in the art will recognize, if the bandwidth that needs circuit element to adjust input impedance and/or widen in a particular embodiment, then can use circular pattern, this can produce the tuning level of additional resonance (resonant tuning stage).If enough spaces can be used, then can use the straight line portion of suitable length.Yet typically, for built-in cellular device antenna, especially for compact models, the space is very limited, thereby preferably, more may use one of above-mentioned shape (or other).
The width and the shape of part 74 influence antenna gain.The length of part 74 also influences operating frequency.Yet, should be noted that as under the situation of typical dipole antenna part 70,71,72 and 73 length (that is the length of entire antenna 45) also influence operating frequency.
And part 74 also can have groove, paster (patch) etc.Paster can be used to increase surface area, thereby makes part 74 carry out shaping to wave beam.Should be noted that under cellular situation preferably, wave beam should send from phone straight, that is, vertical with the plane of PCB 37.As example, according to the execution mode that provides, the width of antenna 45 can be about 7cm or less than 7cm, the height of first 61 can be about 0.5 to 3cm, and the height of second portion 62 can be about 0.5 to 3cm.Certainly, also can use other size.
Just as skilled in the art will recognize, provide the S11 impedance operator of wider bandwidth relevant with antenna 45, need be in the matched well in the frequency range of being concerned about.Like this, need dwindle S11 circle round and that will dwindle and move to 50 ohm center point.Zone 73 is the same with the other parts of antenna 45, can be used to dwindle and/or mobile S11 circle, preferably, realizes in distributed mode.And the matching network of antenna 45 and complications (meandering) part also can be used for the S11 circle is shifted to 50 required ohm center point.According to description of the invention, because the S11 circle that dwindles can advantageously be shifted to 50 ohm point, the center of the S11 that dwindles circle is not very important as above.
Usually in fact, above-mentioned antenna 45 allows different shape and length, is used for being provided with suitable electrical length and CURRENT DISTRIBUTION.Some shapes are simple delay lines, and other shaped design is for influencing the electric current of specific region.As mentioned above, if provide immensity, then above-described many shapes and geometric figure are dispensable.Yet in the limited space environment as mobile radio communication apparatus such as cell phones, above-mentioned antenna features has significant advantage for the desired properties that provides the multiplex (MUX) to do on the frequency band.
Can make different changes in the basic layout to antenna 45 in a particular embodiment.As example, can move tuning branch conductors 72, make tuning branch conductors 72 extend from part 74, rather than 73 extensions from the zone.Just as skilled in the art will recognize, also can make other change.
PCB 67 has positioning circuit 48 first surface and location ground plane conductor 69 second surface thereon thereon.Preferably, relatively locate the part of main loop conductor 64 on the outer outstanding part 68 of L shaped dielectric extension 63, make it not overlapping with ground plane conductor 69.Have been found that the antenna performance characteristics that enhancing can be set like this.Similarly, preferably, any one in first, second or the tuning branch conductors 70,71,72 is not overlapping with ground plane conductor 69.
According to another embodiment that reference Figure 14 discusses, advantageously, antenna 45 ' can also be included in the 3rd branch conductors 100 ' that high frequency treatment increases the beamwidth of antenna.As example, on the multiband that comprises said GSM, DCS, PCS frequency band and universal mobile telecommunications service (UMTS) frequency band, antenna 45 ' can be used to provide high relatively antenna gain and low relatively RL return loss.Certainly, just as skilled in the art will recognize, can designing antenna 45 ', in order on different frequency bands, to work.
Particularly, the 3rd branch conductors 100 ' schematically comprises first 101 ' in the main loop conductor 64 ' and the second portion 102 ' that links to each other with second load point, and wherein, second portion 102 ' is ground connection connection in the illustrated embodiment.According to concrete application, the 3rd branch conductors 100 ' can take different shapes/dispose.In the example that illustrates, the second portion 102 ' of the 3rd branch conductors 100 ' links to each other with second load point (promptly) by second branch conductors 71 '.
In another embodiment shown in Figure 15, second portion 102 " can directly link to each other with load point (being ground here).First and/or second portion 101 ", 102 " also can limit different tuning features, ring as shown.Another possibility is that 101 of first can be paster (Figure 16).Just as skilled in the art will recognize, also, also can use many other tuning feature and configurations as discussion to other branch conductors 70-72.
Curve chart among Figure 17 shows the measurement RL return loss with the antenna that disposes shown in Figure 14.Comprised that the 3rd branch conductors 100 ' has advantageously provided the gain that increases and for the S11 bandwidth of the antenna shown in Fig. 3 45.The frequency and the S11 value that are used for the correspondence of the some 1-8 shown in the survey map are listed in following table 1.
| Period | Frequency (MHz) | S11(dB) |
| 1 | 824.0000 | -9.493 |
| 2 | 880.0000 | -8.070 |
| 3 | 915.0000 | -8.428 |
| 4 | 960.0000 | -7.185 |
| 5 | 1710.0000 | -8.268 |
| 6 | 1828.0000 | -13.150 |
| 7 | 1960.0000 | -10.319 |
| 8 | 2170.0000 | -11.880 |
Table 1
Referring now to Figure 11, the first method scheme that the present invention is used to make mobile radio communication apparatus 20 is described.This method begins (square frame 110), at square frame 111 places, setting has the shell 21 of the first half 46 and the latter half 47, by the dielectric substrate 67 of shell carrying, by the circuit 48 of dielectric substrate carrying, by the audio frequency output translator 49 the first half carrying and that link to each other with circuit of shell and by shell user's input interface device carrying and that be connected with circuit (as, keyboard 23).This method also schematically comprises, at square frame 112 places, locatees at least one auxiliary input-output apparatus 50 in the first half 46 of shell 21, and links to each other with circuit 48; And at square frame 113 places, positioning antenna 45 and on dielectric substrate, comprise the pattern of conducting path in the latter half 47 of shell, like this, the method that obtains illustrating (square frame 114).
Referring now to Figure 12, the other method scheme that the present invention is used to make mobile radio communication apparatus 20 is described.This method begins (square frame 120), at square frame 121 places, forms L shaped dielectric extension 63, comprises vertical component 51 and hang part 68 outside vertical component is extended, has a conducting path at least on the outstanding outside part.This method also schematically comprises, at square frame 122 places, the vertical component 51 of L shaped dielectric extension 63 is linked to each other with main dielectric substrate 67, so that vertical component stretches out from main dielectric substrate 67, make outer outstanding part 68 above the adjacent part of main dielectric substrate 67, extend, and at least one conducting path not with dielectric substrate on ground plane conductor 69 overlapping.And at square frame 123 places, main dielectric substrate 67 can be installed in the shell 21, has obtained the method (square frame 124) that illustrates like this.Certainly, person of skill in the art will appreciate that the order of describing step in the said method only is exemplary, and can in different embodiment, carry out different steps with different order.
With reference to Figure 13, in the example below, further described another example that goes for hand-held mobile radio communication equipment 1000 of the present invention.Equipment 1000 schematically comprises, shell 1200, keyboard 1400 and output equipment 1600.The output equipment that illustrates is a display 1600, and preferably, display 1600 is full graphics LCD.Can optionally use the output equipment of other type.Treatment facility 1800 is contained in the shell 1200, and is connected between keyboard 1400 and the display 1600.Treatment facility 1800 response users control the operation of display 1600 and the overall operation of controlling mobile equipment 1000 to the activation of the button on the keyboard 1400.
Except treatment facility 1800, also schematically show the other parts of mobile device 1000 among Figure 13.These comprise, communication subsystem 1001; Short-range communication subsystem 1020; Keyboard 1400, display 1600, and other input- output apparatus 1060,1080,1100 and 1120.Preferably, mobile device 1000 is the two-way RF communication equipments with voice communications versus data communications ability.In addition, preferably, mobile device 1000 has the ability of communicating by letter with other computer system by the internet.
Preferably, the operating system software that is carried out by treatment facility 1800 is stored in the permanent memory, as flash memory 1160, but also can be stored in the memory device of other type, as, read-only memory (ROM) or similar memory element.In addition, systems soft ware, specific device applications or their part temporarily can be written in the volatile memory, as random-access memory (ram) 1180.The signal of communication that is received by communication equipment also can be stored among the RAM 1180.
Except the operation system function of treatment facility 1800, treatment facility 1800 can also be on equipment 100 executive software application program 1300A-1300N.The predetermined application program of one cover of control basic device operations such as data and voice communication 1300A and 1300B, can be installed in during making on the equipment 1000.In addition, personal information manager (PIM) application program can be installed during making.Preferably, PIM can the organization and management data items, as, Email, calendar event, voice mail, appointment, and task items.Preferably, the PIM application program can also be by wireless network 1401 item that transmits and receive data.Preferably, the pim data item is by wireless network 1401, with store or with host computer system relevant equipment user's corresponding data item seamlessly integrated, synchronously and renewal.
By communication subsystem 1001 and may pass through short range communication systems, carry out the communication system functionality that comprises data and voice communication.This communication subsystem 1001 comprises, receiver 1500, transmitter 1520 and one or more antenna 1540 and 1560.In addition, communication subsystem 1001 also comprises processing module, as digital signal processor (DSP) 1580 and local oscillator (LOs) 1601.The particular design of communication subsystem 1001 and realize depending on that mobile device 1000 wants the communication network of operating therein.For example, mobile device 1000 can comprise communication subsystem 1001, and Mobitex is used in design
TM, DataTAC
TM, or GPRS (GPRS) mobile data communication network operate and design any communication subsystem of operating 1001 of using such as various voice communication networks such as AMPS, TDMA, CDMA, PCS, GSM.Can also use the data and voice network (separation with integrated) of other types to mobile device 1000.
Network access requirements changes according to communication system types.For example, at Mobitex
TMAnd DataTAC
TMIn the network, mobile device uses with each device-dependent unique PIN or PIN and registers on network.Yet in GPRS network, access to netwoks is associated with the subscriber or the user of equipment.Therefore, at the enterprising line operate of GPRS network, GPRS equipment need be commonly called SIM card User Recognition pattern.
When finishing required network registration or activation, mobile device 1000 can send and receiving communication signal by communication network 1401.To be routed to receiver 1500 from the signal that communication network 1401 receives by antenna 1540, in order to signal amplification, frequency down-converts, filtering, channel selection etc. to be provided, and can provide analog-to-digital conversion.The analog-to-digital conversion of received signal allows DSP 1580 to carry out complicated more communication function, as, the demodulation sign indicating number.In a similar fashion, handle the signal that (as modulation and coding) will be sent to network 1401 by DSP 1580, then signal is offered transmitter 1520 by antenna 1560, be used for digital-to-analogue conversion, frequency up-converted, filtering, amplification and be transmitted into communication network 1401 (or network) via antenna 1560.
In data communication mode, handle and be input to treatment facility 1800 by communication subsystem 1001 such as received signals such as text message or page download.Then, further handle received signal by treatment facility 1800, so that to display 1600 outputs, or other auxiliary I/O equipment 1060 outputs to some alternatively.The equipment user also can use keyboard 1400 and/or some other auxiliary I/O equipment 1060 (as the input equipment of touch pad, rocker switch, thumb wheel or some other types) to write the data items such as email message.Can pass through communication subsystem 1001 after the data items of writing, on communication network 1401, send.
In voice communication mode, except received signal being exported to loud speaker 1100 and being generated the signal that is used to transmit by microphone 1120, all operations reality of equipment is all similar to data communication mode.Optionally voice or audio frequency I/O subsystem as the speech message recording subsystem, also can be realized on equipment 1000.In addition, display 1600 also can be used for voice communication mode, for example, and with identity, voice call continuity time or other voice call related of show Calls side.
Short-range communication subsystem can make between mobile device 1000 and other the approaching system or equipment and communicate, and wherein, these equipment need not be similar equipment.For example, short-range communication subsystem can comprise infrared equipment and interlock circuit and assembly or bluetooth
TMCommunication module is enabled communicating by letter of system or equipment to provide with similar.
Have benefited from the religious doctrine that proposes in foregoing description and the relevant drawings, one of skill in the art will appreciate that many modifications of the present invention and other embodiment.Therefore, be appreciated that the present invention is not limited to disclosed specific embodiment, and these are revised and embodiment will comprise within the scope of the appended claims.
Claims (17)
1. mobile radio communication apparatus comprises:
Shell; And
Be carried on the multiband antenna in the described shell, comprise:
Main loop conductor has the slit of first and second ends that define described main loop conductor,
First branch conductors, have be connected described main loop conductor first end near first end and have second end that defines first load point,
Second branch conductors, have be connected described main loop conductor second end near first end and second end that defines second load point,
The 3rd branch conductors, the second portion that has the first in described main loop conductor and link to each other with second load point, and
Tuning branch conductors has first end that links to each other with described main loop conductor, and first end of described tuning branch conductors is between described first and second branch conductors first end separately.
2. mobile radio communication apparatus as claimed in claim 1, wherein, at least one in first and second parts of described the 3rd branch conductors defines ring.
3. mobile radio communication apparatus as claimed in claim 1, wherein, the first of described the 3rd branch conductors comprises paster.
4. mobile radio communication apparatus as claimed in claim 1, wherein, the second portion of described the 3rd branch conductors links to each other with second load point by described second branch conductors.
5. mobile radio communication apparatus as claimed in claim 1, wherein, described main loop conductor has the shape that is roughly rectangle, and described rectangle has first and second relative limits and the first and second relative ends; And the slit is in first limit of described main loop conductor.
6. mobile radio communication apparatus as claimed in claim 5, wherein, described first branch conductors, described second branch conductors and described tuning branch conductors first end separately link to each other with first limit of described main loop conductor.
7. mobile radio communication apparatus as claimed in claim 1, wherein, described main loop conductor comprises non-flat portion.
8. mobile radio communication apparatus as claimed in claim 1, wherein, described main loop conductor has at least one tuning feature.
9. mobile radio communication apparatus as claimed in claim 1, wherein, described first, second, third and tuning branch conductors at least one comprise tuning feature.
10. mobile radio communication apparatus as claimed in claim 1 also comprises the dielectric substrate that supports described multiband antenna; And in described main loop conductor, first and second branch conductors and the tuning branch conductors each comprises conducting path separately on described dielectric substrate.
11. a method that is used to make mobile radio communication apparatus comprises:
Shell is set; And
With the multiband antenna location in the enclosure, comprising:
Main loop conductor has the slit of first and second ends that define described main loop conductor,
First branch conductors, have be connected described main loop conductor first end near first end and have second end that defines first load point,
Second branch conductors, have be connected described main loop conductor second end near first end and second end that defines second load point,
The 3rd branch conductors, the second portion that has the first in described main loop conductor and link to each other with second load point, and
Tuning branch conductors has first end that links to each other with described main loop conductor, and first end of described tuning branch conductors is between described first and second branch conductors first end separately.
12. method as claimed in claim 11, wherein, at least one in first and second parts of described the 3rd branch conductors defines ring.
13. method as claimed in claim 11, wherein, the first of described the 3rd branch conductors comprises paster.
14. method as claimed in claim 11, wherein, the second portion of described the 3rd branch conductors links to each other with second load point by described second branch conductors.
15. method as claimed in claim 11, wherein, described main loop conductor has the shape that is roughly rectangle, and described rectangle has first and second relative limits and the first and second relative ends; And the slit is in first limit of described main loop conductor.
16. method as claimed in claim 11, wherein, described first, second, third and tuning branch conductors at least one comprise tuning feature.
17. method as claimed in claim 11, wherein, described main loop conductor has at least one tuning feature.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP05253974.9 | 2005-06-27 | ||
| EP05253974A EP1739788B1 (en) | 2005-06-27 | 2005-06-27 | Mobile wireless communications device comprising multi-frequency band antenna and fabrication method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1870799A true CN1870799A (en) | 2006-11-29 |
| CN100584066C CN100584066C (en) | 2010-01-20 |
Family
ID=35033349
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200610090876A Active CN100584066C (en) | 2005-06-27 | 2006-06-27 | Mobile wireless communications device comprising multi-frequency band antenna and fabrication method |
Country Status (7)
| Country | Link |
|---|---|
| EP (1) | EP1739788B1 (en) |
| CN (1) | CN100584066C (en) |
| AT (1) | ATE368948T1 (en) |
| CA (1) | CA2549192C (en) |
| DE (1) | DE602005001860T2 (en) |
| ES (1) | ES2287876T3 (en) |
| SG (1) | SG128637A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103247850A (en) * | 2013-04-26 | 2013-08-14 | 上海安费诺永亿通讯电子有限公司 | Antenna suitable for handheld mobile communication terminal with metal outer frame |
| WO2017206814A1 (en) * | 2016-05-28 | 2017-12-07 | 华为技术有限公司 | Antenna structure and communication terminal using same |
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| US7629932B2 (en) | 2007-03-23 | 2009-12-08 | Research In Motion Limited | Antenna apparatus, and associated methodology, for a multi-band radio device |
| EP1973192B1 (en) * | 2007-03-23 | 2017-06-14 | BlackBerry Limited | Antenne apparatus and associated methodology for a multi-band radio device |
| US8509211B2 (en) * | 2009-06-25 | 2013-08-13 | Bose Corporation | Wireless audio communicating method and component |
| WO2011095207A1 (en) * | 2010-02-03 | 2011-08-11 | Laird Technologies Ab | Antenna device and portable electronic device comprising such an antenna device |
| US9673525B2 (en) | 2011-05-23 | 2017-06-06 | Nokia Technologies Oy | Apparatus and methods for wireless communication |
| US9431708B2 (en) * | 2011-11-04 | 2016-08-30 | Dockon Ag | Capacitively coupled compound loop antenna |
| CN107425277B (en) * | 2017-07-25 | 2023-06-02 | 福建福大北斗通信科技有限公司 | Multi-frequency combined satellite navigation terminal antenna |
| US11923622B2 (en) | 2018-08-02 | 2024-03-05 | Nokia Solutions And Networks Oy | Antenna and wireless communication device |
| CN111082205B (en) * | 2019-12-06 | 2022-05-06 | 惠州Tcl移动通信有限公司 | Antenna and electronic device |
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| US5198826A (en) * | 1989-09-22 | 1993-03-30 | Nippon Sheet Glass Co., Ltd. | Wide-band loop antenna with outer and inner loop conductors |
| GB9102935D0 (en) | 1991-02-12 | 1991-03-27 | Shaye Communications Ltd | Improvements in and relating to antennae |
| US6329951B1 (en) * | 2000-04-05 | 2001-12-11 | Research In Motion Limited | Electrically connected multi-feed antenna system |
| DE10052911A1 (en) * | 2000-10-25 | 2002-05-23 | Flexchip Ag | Antenna structure for transponders |
| US6741215B2 (en) | 2001-07-31 | 2004-05-25 | Jerry Allen Grant | Inverted safety antenna for personal communication devices |
| US6600450B1 (en) * | 2002-03-05 | 2003-07-29 | Motorola, Inc. | Balanced multi-band antenna system |
| TW545712U (en) * | 2002-11-08 | 2003-08-01 | Hon Hai Prec Ind Co Ltd | Multi-band antenna |
-
2005
- 2005-06-27 ES ES05253974T patent/ES2287876T3/en active Active
- 2005-06-27 DE DE602005001860T patent/DE602005001860T2/en active Active
- 2005-06-27 EP EP05253974A patent/EP1739788B1/en active Active
- 2005-06-27 AT AT05253974T patent/ATE368948T1/en not_active IP Right Cessation
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2006
- 2006-06-19 CA CA002549192A patent/CA2549192C/en active Active
- 2006-06-21 SG SG200604296A patent/SG128637A1/en unknown
- 2006-06-27 CN CN200610090876A patent/CN100584066C/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103247850A (en) * | 2013-04-26 | 2013-08-14 | 上海安费诺永亿通讯电子有限公司 | Antenna suitable for handheld mobile communication terminal with metal outer frame |
| WO2017206814A1 (en) * | 2016-05-28 | 2017-12-07 | 华为技术有限公司 | Antenna structure and communication terminal using same |
Also Published As
| Publication number | Publication date |
|---|---|
| CA2549192A1 (en) | 2006-10-21 |
| ES2287876T3 (en) | 2007-12-16 |
| DE602005001860T2 (en) | 2008-04-17 |
| EP1739788A1 (en) | 2007-01-03 |
| EP1739788B1 (en) | 2007-08-01 |
| ATE368948T1 (en) | 2007-08-15 |
| SG128637A1 (en) | 2007-01-30 |
| CN100584066C (en) | 2010-01-20 |
| DE602005001860D1 (en) | 2007-09-13 |
| CA2549192C (en) | 2008-04-29 |
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