CN1244974A - Radio telephone with separate antenna for stand-by mode - Google Patents
Radio telephone with separate antenna for stand-by mode Download PDFInfo
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- CN1244974A CN1244974A CN96180585A CN96180585A CN1244974A CN 1244974 A CN1244974 A CN 1244974A CN 96180585 A CN96180585 A CN 96180585A CN 96180585 A CN96180585 A CN 96180585A CN 1244974 A CN1244974 A CN 1244974A
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Abstract
A radio telephone for use in wireless telecommunication has a transmitter/receiver unit (4), a control unit (5), a first antenna (1), the properties of which are optimized for use in stand-by mode, and a second antenna (2), the properties of which are optimized for use during ongoing calls, said second antenna being electrically engageable and disengageable with the transmitter/receiver unit. The radio telephone further has an antenna switch (3), which is arranged to operatively connect the transmitter/receiver unit (4) to either the first antenna (1) or the second antenna (2), said antenna switch supplying the control unit (5) with control signals (7) in response to at least the electrical engagement status of the second antenna. The control unit prevents ingoing as well as outgoing calls from being established, as long as the second antenna according to said control signals is indicated to be electrically disengaged.
Description
Technical field
The present invention relates to be used for a kind of radio telephone of aerogram, comprise an emittor/receiver unit, a control unit, for use first antenna of optimizing its characteristic at backup mode, with in the calling of just carrying out, using second antenna optimize its characteristic, described second antenna can engage with emittor/receiver unit electricity and separate.The invention still further relates to the method for control foundation calling that come in and that go out in such radio telephone.
Background technology
Now, aerogram is the same common with more conventional wired form of telecommunications at least.In each country almost, increasing people use wireless radio telephone, especially cellular phone in daily life.Term " radio telephone " comprises that all can be used for the portable equipment of radio communication, i.e. cellular phone, so-called personal communicator or organizer etc.To the prediction in future also represent such phone use in addition more frequent and in the near future radio telecommunications system will become more universal than wired system.
In mobile telephone system, or in the so-called cellular telephone system, public or commercial telephone operator provides the base station of a large amount of geographical distribution.Each base station is arranged to such an extent that cover a particular locality, so-called mesh and select each area so that they cover a continuous geographic area together as far as possible extensively in this way.The base station be designed to be from to mobile radio station as appear at wireless or mobile phone this area and transmit calling and give orders or instructions calling and from then on each base station be connected to public wireline communication network.Mobile radio station in modern telecommunication systems such as GSM (global mobile service system) have two kinds of main working methods, and its first kind of mode conversed with high density communication between mobile radio station of being discussed and base station.Second kind of working method is standby mode, promptly when mobile radio station does not provide any conversation of carrying out, still normally carrying out but communicate by letter with certain of base station.For example, when the user opens his mobile radio station, mobile radio station will be searched for available base stations and select to have of highest signal strength.Mobile radio station is reported his existence to selected base station then.Mobile radio station normally receives information, for example frequency synchronization information then from the base station.If seeming, signal strength signal intensity is lower than the signal strength signal intensity of any other available base stations, the latter that generally can switch (the so-called switching).In addition, two-way so-called handshake communication takes place, when incoming call will be set up between mobile radio station and base station.Describedly service be might provide by top, roaming (etching system detects and keeps user record when crossing the border), SMS (Short Message Service resembled; On telephone displays, show the transmission of short-text message) and CB (mesh broadcasting; Promptly from the some mobile phone broadcasts of public authority to appearing at mesh).
Other kind of aerogram is known, and these kinds are free of attachment to public wired telephone network.An example is a dispatch application, i.e. the non-public wireless system that is used by taxi trade, police authorities or carrier.Another example is this locality or global paging system and to also have another example be cordless telephone system such as DECT (digital European cordless telephone system).
For above-mentioned in communication system with wireless mode transferring voice or data, need the transmitter and receiver of electricity-magnetic energy.No matter in analogue system or digital system, information is electric treatment in transmitter and receiver.Transmitter and receiver all is connected on the conversion equipment, as antenna, is used for the conversion between electricity and electricity-magnetic energy.The wireless messages transmission is by producing radio frequency electromagnetic field and realizing with light velocity arrival receiver antenna from outside the propagation then of antenna around transmitter antenna.
Since antenna converse and backup mode during use in a large number, as mentioned above, in modern mobile telephone system, various requirement is proposed the mobile radio station antenna.The requirement economically and the requirement of cost-effectively are conspicuous.Another general requirement is that the farm labourer between battery charge does the time and must keep a large amount of available electrical energy for satisfying this mobile radio station that requires, and needs a high antenna conversion efficiency thus.Usually, the requirement of antenna and signal quality is stricter during conversing than during backup mode.
In addition, the physical size of mobile phone is very important.The user of today thinks useful mobile phone needs low weight, compactness and solid pattern; Mobile phone preferably is fit to be placed in the interior pocket of jacket, the handbag etc., maybe might be with the belt clamp subband on waistband.Compact and solid requirement also obviously are applied on the mobile phone antenna.
During conversing mobile phone be close to generally that the user places and, user's hand and especially will influence the characteristics of signals of antenna inevitably as a result.Influencing each other between health and the antenna near-field causes antenna performance to weaken usually, mainly is because reflection and absorption loss.Especially, if the distance between antenna and the health reduces, signal weakening will increase and be difficult to obtain simultaneously the compactness of high antenna efficiency and physics and solid significantly.
Various antenna types on mobile phone, have been used today, for example half-wavelength or quarter-wave whip antenna, doublet antenna, helical antenna etc.When considering characteristics of signals and antenna efficiency, different antenna types is suitable for different scopes.For example, helical antenna since it spiral-shaped can provide compact size and good anti-damageability and often be used., helical antenna can not show half-wave antenna good antenna efficiency like that.
Because the consideration mobile phone on the space is also often equipped extensile whip antenna, it is replenishing by independent exterior antenna in some cases in order to be used for backup mode, because whip antenna is fully retracted to and just it is transmitted in the metal shell and surrounding environment is isolated.The open WO9301659 of the international monopoly of motorola inc discloses a kind of radio telephone, and its antenna can move between contraction and expanding location.This phone has two working methods, depends on that whether antenna expand.These working methods for example can engage or not engage with display lighting or not luminous, keypad or the varying level of launching effect relevant.
Summary of the invention
The objective of the invention is to optimize the design of mobile radio station antenna at above-mentioned requirements and problem.Target of the present invention especially provides a kind of high performance antenna system that has during conversing and under backup mode.Realize this purpose by using two kinds of different antennas, first kind of antenna has the backup mode that little and compact form can be resisted outside mechanical stress and is used to mobile radio station, be during long antenna often only is used to converse and have following characteristic with second kind of antenna, promptly produce the physical length and the position of unconspicuous signal weakening and high antenna efficiency.In addition, best retraction shell or lean against the shell edge contraction and take measures according to the present invention wholly or in part under second kind of antenna other situation during not conversing so that use first antenna that is often used for backup mode during preventing from conversing.
Brief description of drawings
The present invention is described below with reference to accompanying drawings in more detail, wherein
Fig. 1 is wireless telephonic schematic diagram, has wherein used the present invention,
Fig. 2 is the block diagram of the emittor/receiver unit among Fig. 1,
Fig. 3 and 4 is profiles of the preferred embodiment of antenna among Fig. 1,
Fig. 5 is the equivalent circuit diagram of part in Fig. 3 and 4,
Fig. 6 a is the wireless telephonic front view that band protecgulum or lid are opened, and the antenna arrangement according to remodeling embodiment of the present invention is described,
Fig. 6 b represents the same wireless phone that protecgulum is folded up,
Fig. 6 c is the wireless telephonic cross-sectional view according to Fig. 6 a,
The wireless telephonic front view that Fig. 7 a band protecgulum is opened illustrates the antenna arrangement according to second remodeling embodiment of the present invention,
Fig. 7 b represents the same wireless phone that protecgulum is folded up,
Fig. 7 c is the wireless telephonic cross-sectional view according to Fig. 7 a,
Fig. 8 a is the wireless telephonic front view that protecgulum is opened, and the antenna arrangement according to second remodeling embodiment of the present invention is described,
Fig. 8 b is the wireless telephonic cross-sectional view according to Fig. 8 a.
The radio telephone of having represented the mobile radio station effect in Fig. 1 is wherein used according to antenna system of the present invention.For the disclosed mobile phone of reason for example and not limitation is the type of using in the modern telephone system, as GSM or NMT.Phone comprises shell 6, miniature antenna 1, and big antenna 2, duplexer 3, emittor/receiver unit 4, control unit 5 and the various devices and the equipment that do not show, as keypad, display, battery, earphone, microphone etc.
When the communication of user control does not take place and therefore miniature antenna 1 is often used for the backup mode of mobile phone, and promptly miniature antenna 1 has the compact form that is suitable for this purpose.Below will be called the antenna 1 that backs up antenna and preferably have and compare in fact short physical length with its electrical length, it can relevantly be wound in spiral type with electric lead and realize.The performance requirement of antenna 1 is not strict with to 2 requirements of antenna, because antenna 1 only is used for backup mode.For the compactest, antenna 1 is the quarter-wave type preferably.
By the working method of control mobile radio station as described above, can guarantee to use the antenna of the most suitable each working method (being respectively backup mode and talking mode).
Control unit is preferably realized with relevant software program by a microprocessor, even the function that describes below can be carried out with many distinct methods in hardware, for example, easily realize as technical staff by numeral exchange field by a digital switching network.For making the cost minimum, preferably use identical CPU (CPU), its control mobile radio station main operation, or in conventional mobile radio station already used any other coprocessor.
The block diagram of in Fig. 2, having represented emittor/receiver unit 4.The emittor/receiver unit be basically conventional design and therefore below its work is only described generally.In radiation pattern emission information, promptly baseband signal 41 (" TX " base band) arrives modulator 42 with numeral or analog form from control unit 5.Baseband signal 41 modulation receive the clock signal from clock circuit 44 subsequently from the intermediate-freuqncy signal of transmitter local oscillator 43 there.Intermediate-freuqncy signal after the modulation is synthesized the carrier frequency mixing that device 46 produces then in frequency mixer 46.The high-frequency signal that is obtained amplifies and filtering in amplifier 47 and filter 48 respectively, and this signal is sent to the antenna of being selected by duplexer 3 at present then.
The signal that is received by antenna in receive mode is provided for filter 50 and amplifier 51 to carry out filtering and amplification.Be down-converted to intermediate frequency at frequency mixer 52 medium-high frequency signals by signal from synthesizer 45.In filter 53 and amplifier 54, carry out filtering and amplification then respectively once more, in demodulator 55, carry out demodulation then by intermediate-freuqncy signal from receiver local oscillator 56.The baseband signal 57 that is obtained then (" RX " base band) can be decoded or carry out signal processing in unshowned circuit with well-known mode.
Fig. 3 and 4 is cross-sectional views of preferred embodiment of two antennas of Fig. 1.Miniature antenna 1 among Fig. 1 is realized by the helical antenna 11a that is often used for the mobile radio station backup mode, and the big antenna 2 among Fig. 1 is by the whip antenna 10a realization of half-wave type.Two antennas are installed on the shell 6.As described below, antenna 10a still is the collapsible shell of going into.Helical antenna 11a is wrapped in by dielectric substance 11b, provides robustness and to the protection of mechanical stress, this is a particular importance at backup mode because mobile radio station often by band in pocket, bag or analog.Whip antenna 10a is placed among the cavity 11d of dielectric substance 11b.Represented whip antenna launches fully and is electrically connected by the impedance matching network with metal tongue 32 with coaxial cable 34 in Fig. 3.The other end of coaxial cable 34 is electrically connected with emittor/receiver unit 4 according to Fig. 1 and 2.
The impedance matching network that comprises coil 20, metal tube 21, dielectric body 15 and two ring- type connectors 16 and 22 can be replaced between according to the higher bonding station of Fig. 3 and the low bonding station according to Fig. 4 respectively vertically.On the higher conjugation position according to Fig. 3, metal tube 21 contacts by ring flange 24 electric currents with threaded anchor clamps 13, and described anchor clamps are screwed in the shell 6 of mobile radio station subsequently, guide to earthing potential for metal tube 21 like this.Impedance matching network can think that so-called pi type filter is used for the input impedance 58 (Z at whip antenna 10a on according to the bonding station of Fig. 3
ANT) with the output impedance 59 (Z of emittor/receiver unit 4
RX/TX) between carry out impedance matching.Usually, the latter is 50 Ω, and as the impedance of coaxial cable, and the whip antenna of end feedback half-wave type antenna has the big impedance of theory unlimited but in fact has the value of about 200 to 250 Ω.It is well-known needing impedance matching when using half-wave antenna in mobile radio station.The known workaround in past comprises separately lays filter circuit, and this method takes up room and increases cost.
In Fig. 5, roughly represented pi type filter.Electric charge on inductance 60 corresponding coils 20 and electric capacity 61 and the 62 corresponding coils, described electric charge and above-mentioned grounded metal pipe 21 separate by dielectric substance 15.In addition, the key function of impedance matching filter is known for those skilled in the art and therefore is not described further.
For avoid having arranged around intercoupling the higher-end at whip antenna 10a between two antennas dielectric segments 10c and whip antenna 10a than having arranged another dielectric segments 10b around the low side.On section 10c, lay aerial head 10d and this aerial head and preferably made integral unit of formation.
When the user of mobile radio station pushes whip antenna 10a in the shell 6, therefore section 10c contacts with ring-type connector 16 than lower part, with impedance matching network therefore when its lower position is transferred in its higher position, carried out actual switching from the expanding location of whip antenna to its punctured position.When the user grasps aerial head 10d and launches whip antenna 10a, when therefore holdout device 10e and dielectric segments 10b engaged with ring- type connector 22 and 16 respectively, impedance matching network was transferred to its higher position from its lower position in the corresponding way.
By above-mentioned antenna switched design, duplexer 3 (in Fig. 1 expression and be described in more detail below its function) realizes with the space requirement and a few components of minimum, by means of the antenna switched design that comprises with the fully-integrated impedance matching network of actual antennas system.
Duplexer 3 is suitable for determining effective engagement state of second antenna 2; 10a-e, promptly whether antenna is electrically connected or engages with emittor/receiver unit 4.The coupling of any electric current, electric capacity or inductance represented in the case in term " electrical connection ", or any their combination.Like this, according to a preferred embodiment of the invention, duplexer 3 has been equipped being used for of not showing in the drawings and has been determined the contraction of second antenna 2 and the device of expanding location respectively; 10a-e.Described device can or well known to a person skilled in the art the transducer from various machineries, electricity or optical switch and select, and lays described device so that the control unit 5 of the control signal 7 with the response aerial position that detected to be provided.Also may determine that indirectly the electricity of second antenna engages by detecting the disengaging of first antenna.
To describe now according to mobile radio station of the present invention or wireless telephonic operation.Beginning suppose that mobile radio station is a backup mode, so mobile radio station did not provide any conversation of carrying out at that time.General communication between mobile radio station and the selected base station is by backup antenna 1; 11a-d, conversation antenna 2; 10a-e electricity disconnection simultaneously also collapses into shell 6 fully.
When base station notice mobile radio station had incoming call, following situation took place.First step control unit 5 checks whether the user takes any action to answer this calling, for example by pressing the suitable key (as " YES " or " OFF-hook " key) on the keypad.If really so, whether the definite conversation of control unit antenna launches fully or in other words is ready to provide further conversation to set up.If really so, give message of user so that notify him these facts.This message can be vision, sound or realizable form, or any combination of these forms.Be preferably in the message that expression " is extracted antenna " immediately on the display of mobile phone.Another form, the loud speaker by mobile phone can send voice signal, or produces vibrations in phone or its any part.As long as the conversation antenna does not launch fully or in other words unripely provides conversation, control unit will forbid that mobile phone sets up the necessary given function of conversation.Before setting up conversation, these preferably exchange necessary data sequence and finish by preventing to transmit data sequence and base station information.Such precautionary measures those skilled in the art can easily obtain, and wherein use a microprocessor, because this action can be carried out separately by software.More the solution of " expert " comprises the device that disconnects simply as microphone or loud speaker.
As long as the user removes above-mentioned disable condition by launching the conversation antenna, the above-mentioned call function of forbidding just correspondingly finishes, and sets up conversation then in a usual manner.Constitute under the situation of separate unit at duplexer 3, this situation is not the situation of above-mentioned preferred antenna system, control unit will provide a control signal to duplexer, and the electricity that described duplexer is carried out backup antenna 1 then disconnects and the also electrical connection of execution conversation antenna 2 simultaneously.
The simple form of above-mentioned series of acts is as follows.In case base station notice mobile radio station incoming call, control unit 5 will be that the needed key of answer calls " YES " or " OFF-hook " break away from simply with the user.Notify the user then as mentioned above, do not engage " YES " or " OFF-hook " key and observe request up to the user, the user then finally can answer calls.
When conversation was finished, mobile radio station returned to backup mode.During backup mode by at that time antenna electricity being engaged the communication of carrying out any necessity.Usually, after conversation is finished, will converse a day linear shrinkage of user, the antenna of conversing thus is disconnected and backs up antenna and is connected, but for example because abominable signal environment, the user can keep the conversation antenna to be connection or engagement state according to own hope.
When the user when the input telephone number is attempted to set up to outcall on the keypad, for example press " YES " key, control unit will detect and be described similar mode and notify the user with top, the antenna of conversing like this must engage.Described similar mode and forbidden any foundation that provides necessary function of conversing with top from that time.Really engaged the conversation antenna up to the user and just removed and forbid, with then as setting up conversation usually.
Above preferred embodiment only as an example.In the additional defined scope of the invention of claim, different embodiment can break away from top description.For example, as mentioned previously, can realize the control unit function according to different hardware and/or software scenario, this is that those skilled in the art realize easily.In addition, except that above-described antenna type other antenna types can with backup antenna and the conversation antenna.Above-described antenna is extensile, but it also can be the collapsible folding and unfolding of another form, and for example antenna can be folded up near mobile phone outer casing when phone does not provide conversation.
In Fig. 6 a-c, represented Antenna Design according to another form of the embodiment of the invention.As usual, radio telephone comprises a telephone outer shell 6, a display 7, keypad 72, a loud speaker 73, with a microphone 74, comprise a collapsible protecgulum in addition or cover 70 with this radio telephone, what this lid designed folds up the front side of the phone that rolls thus according to Fig. 6 b when conversation is not provided.When answering incoming call, maybe when beginning to send calling, the user decontrols protecgulum 70 around rotating shaft 76 in a usual manner according to Fig. 6 a.
As previously mentioned, backup antenna 1 is installed in the top of shell 6.Preferably the conversation antenna 2 that is made of end feedback half-wave type rotable antenna is placed in the long limit of protecgulum 70 inner contiguous one bars.Antenna 2 is rotatably installed on the same axis 76 as protecgulum 70, when the user uses phone, packs up and decontrols correspondingly and follow with protecgulum is folding.Be connected with emittor/receiver unit 4 by conventional electric installation at round end antenna 2, for example coaxial cable.
By above-mentioned design, antenna 2 with downward in direction and the perpendicular parallel with protecgulum 70 away from user's head, obtains the ultimate range to head with directed downwards thus during conversing.During conversing, prevent to use backup antenna 1, further reduce interaction between antenna and the user's human body, reduced signal attenuation thus, so improved antenna efficiency according to the Antenna Design of Fig. 6 a-c together with above-mentioned measure.In addition, radio telephone function is with previously described identical.
Another Antenna Design of expression in Fig. 7 a-c is except using shorter antenna as the conversation antenna 2, corresponding to representing antenna among Fig. 6.Preferably this antenna 2 that is made of helical antenna is installed in the bottom (as Fig. 7 finding) of protecgulum 70 and is connected on other phone element, for example is connected to emittor/receiver unit 4 by the coaxial cable of laying along 70 1 long limits of protecgulum 75.
Among Fig. 7 a-c with Fig. 7 a-c in identical reference number represent same part, and no longer be described in more detail.Found out as Fig. 7 b, when protecgulum 70 be in its when high-order conversation antenna 2 be stretched on the phone, but, forbid that in the case the user uses conversation antenna 2 as the front.
Another Antenna Design of expression in Fig. 8 a-b.This embodiment is identical with the represented embodiment of Fig. 6 a-c basically, except when protecgulum whole phones that do not roll when folding up.By means of these features, the user can see display 71, even when protecgulum 70 is folded.
To those skilled in the art, the embodiment that can change in every way among Fig. 6-8 is conspicuous.For example, conversation antenna 2 can be placed in another way and maybe can insert outside the protecgulum 70 in the protecgulum 70 and it can stride across protecgulum 70 extending transverselies but not along a long limit.Except laying around axle 76 rotations, protecgulum 70 can vertically shift between a high position and low level, covers wireless telephonic major part at high-order protecgulum, uses wireless telephone call at low level.In addition, protecgulum 70 is arranged to such an extent that can push away a bit of and pivot then and open.In addition, antenna 2 can promptly preferably have a sheet metal of square by being installed in for example so-called paster antenna realization of protecgulum inside.
Also may keep backing up antenna within the scope of the present invention continues to engage, if with this mode designing antenna system, back up antenna like this and play a part reception antenna with the conversation antenna so that obtain the antenna diversity gain in receive mode or so-called down link mode.
Claims (15)
1. be controlled at a kind of method of setting up calling in the radio telephone and giving orders or instructions to call out, comprise that its characteristic is optimised and be used for first antenna (1 of backup mode; 11a-d) and optimised and second antenna (2 that during conversing, uses of its characteristic; 10a-e), it is characterized in that step:
A) determine second antenna (2 in radio telephone; 10a-e) whether with emittor/receiver unit (4) electricity and/or effectively is connected and, if not this situation, forbid that radio telephone sets up necessary at least one function of conversing,
B) determine according to a) repeating this, the condition in satisfying a) and
C) as long as the condition a) is satisfied, just remove according to forbidding a), after this set up conversation.
2. according to a kind of method of claim 1, it is characterized in that other step:
When a ') condition in a) has been satisfied,, notify wireless telephonic user with visible, sound or realizable method.
3. according to a kind of method of claim 2, it is characterized in that providing according to a ' with the text message on the radio telephone display) notice.
4. according to a kind of method of claim 2, it is characterized in that providing according to a ' with the voice signal on the radio telephone loud speaker) notice.
5. according to a kind of method of claim 2, it is characterized in that providing according to a ' with the vibration on a radio telephone or the wireless telephonic part) notice.
6. according to a kind of method of any front claim, it is characterized in that setting up the necessary function of calling and be made of data sequence, this data sequence is sent the wireless base station signal exchange that is used for and is used for conversing from radio telephone.
7. according to a kind of method of any front claim, it is characterized in that forbidding setting up the necessary function of conversation by at least one key on effective disconnection of wireless telephone keypad.
8. according to a kind of method of any front claim, it is characterized in that detecting first antenna (11; 11a-d) the step of electric engagement state and in according to definite step a), use this information.
9. be used in a kind of radio telephone in the aerogram, comprise an emittor/receiver unit (4), a control unit (5), its characteristic is optimised and be used for one first antenna (1 of backup mode; 11a-d) and optimised and one second antenna (2 that during conversing, uses of its characteristic; 10a-e), described second antenna can electric engage and break away from the emittor/receiver unit,
It is characterized in that duplexer (3), this switch is installed with emittor/receiver unit (4) and first antenna (1; 11a-d) or second antenna (2; 10a-e) be electrically connected effectively, described duplexer provides the control signal (7) of the electric engagement state of response at least the second antenna to control unit (5), break away from as long as second antenna is expressed as electricity according to described control signal, described control unit is installed to such an extent that prevent to set up calling and is given orders or instructions and calls out.
10. according to a kind of radio telephone of claim 9, it is characterized in that first antenna (1; Be to constitute 11a-d) by helical antenna (11a-d).
11., it is characterized in that second antenna (2 according to a kind of radio telephone of claim 9 or 10; 10a-e) be installed on the wireless telephonic surface rotatable and/or movably protecgulum (70).
12., it is characterized in that second antenna (2 according to a kind of radio telephone of claim 11; The sensing of antenna is left radio telephone when 10a-e) proper protecgulum (70) being installed opening during conversing in the plane substantially the same with protecgulum.
13., it is characterized in that second antenna (2 according to a kind of radio telephone of claim 11 or 12; 10a-e) constitute by the end feedback half-wave antenna that is installed in the protecgulum (70) along its long limit.
14., it is characterized in that second antenna (2 according to a kind of radio telephone of claim 9 or 10; 10a-e) be made of whip antenna (10a-e), this antenna is installed to such an extent that stretch out and collapse into shell (6) when calling out or fold up along its shell when not providing from shell (6) during conversing.
15. a kind of radio telephone according to claim 14, it is characterized in that impedance matching network, comprise a metal tube (21), be installed in the coil (20) in the metal tube, be installed in the dielectric substance (15) between coil and the metal tube, the first and second ring-type connectors (16,22) with first and second ends of distinguishing connecting coil;
Helical antenna (11a-d) comprises a spiral type electric conductor (11a), around one of this conductor dielectric body of column type (11b) and be arranged in the cavity (11c-d) at this dielectric body center along its length extending basically; With
Whip antenna (10a-e), this antenna is installed in the cavity of helical antenna (11a-d), and can launch and be contracted in wherein from shell (6) respectively,
When this whip antenna launches, said impedance matching network is configured to have primary importance, described whip antenna is electrically connected with the emittor/receiver unit by first ring-type connector (16) coil (20) and the second ring-type connector (22) thus, with have the second place, when this whip antenna shrank, described helical antenna was electrically connected with the emittor/receiver unit by metal tube (21) thus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN96180585A CN1126280C (en) | 1996-12-23 | 1996-12-23 | Radio telephone with separate antenna for stand-by mode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN96180585A CN1126280C (en) | 1996-12-23 | 1996-12-23 | Radio telephone with separate antenna for stand-by mode |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1244974A true CN1244974A (en) | 2000-02-16 |
| CN1126280C CN1126280C (en) | 2003-10-29 |
Family
ID=5128016
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN96180585A Expired - Fee Related CN1126280C (en) | 1996-12-23 | 1996-12-23 | Radio telephone with separate antenna for stand-by mode |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1126280C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100428817C (en) * | 2001-02-06 | 2008-10-22 | 摩托罗拉公司 | Antenna system for wireless information device |
-
1996
- 1996-12-23 CN CN96180585A patent/CN1126280C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100428817C (en) * | 2001-02-06 | 2008-10-22 | 摩托罗拉公司 | Antenna system for wireless information device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1126280C (en) | 2003-10-29 |
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