Aerial radiation body device and Wireless Telecom Equipment
Technical field
The present invention relates to a kind of aerial radiation body device and the Wireless Telecom Equipment that comprises the wireless radiation body device.The present invention is used in particular for but needn't be limited to, and has four band radio communication equipments of built-in aerial.
Background of invention
Wireless Telecom Equipment needs all channel antenna to be used for sending and receiving wireless communication signals usually.For example, use the gsm system of 900Mhz frequency band that professional Virtual network operator is provided, also use the DCS system of the 1800MHz frequency band of using the Europe typical case the Asia typical case.Therefore, the gsm wireless communication equipment as cellular radio, should have double frequency band aerial so that can communicate in said frequencies at least effectively.And in some countries, the service provider moves on 850MHz or 1900MHz frequency band.
The present small-sized Wireless Telecom Equipment of consumer demand, these equipment typically have built-in aerial, and have replaced the antenna stub that the user can see.The antenna of the aerial radiation body structure that some cell phones need comprising of miniaturization now and couple with ground plane, ground plane are typically on the circuit board of phone or its inner formation.And the aerial radiation body structure is installed in phone inside, and congested electric conductor and " loss " element are placed near it.Antenna must can adapt to 850MHz, 900MHz, 1800MHz and 1900MHz frequency band when it is miniaturized with box lunch by the covering wide frequency band.Therefore, need a kind of small-sized relatively built-in four frequency-band antenna radiator structure.
In this manual, be included in claims, term " comprises " or similar terms is intended to mean comprising of nonexcludability, therefore, comprises that the method for listed element or equipment not only comprise these elements, but more may comprise the element that other are unlisted.
Summary of the invention
According to an aspect of the present invention, provide a kind of aerial radiation body device to comprise:
Active emitter element and passive radiation body member, active emitter element has the radiant body edge, and the passive radiation body member has the base edge near this radiant body edge;
With active emitter element be couple to telecommunication circuit feedback point and with active emitter element be couple to ground first grounding connector;
The passive radiation body member is couple to second grounding connector on ground;
Active groove extends to active emitter element inside from active notch in the radiant body edge; And
Passive groove is extending to the passive radiator element internal in the face of in the edge from passive notch.
Suitably, at least a portion radiant body edge and base edge are faced mutually.
Preferably, in using active emitter element, first and second resonance frequencys are provided, and the passive radiation body member is as parasitic antenna, and provide third and fourth resonance frequency, wherein the first and the 3rd resonance frequency is approaching toward each other, and the second and the 4th resonance frequency is also approaching toward each other.
Suitably, active emitter element and passive radiation body member have coplanar surface.
Preferably, active notch and passive notch are offset each other.This notch and passive notch be suitably skew each other when described active emitter element is watched with plan view.In a kind of replacement, this notch and passive notch be suitably skew each other when described active emitter element is watched with end view.Suitably, active notch and passive notch are close to each other.
Active notch and passive notch have essentially identical size.Preferably, passive notch does not overlap with the mirror image of active notch basically.In a kind of replacement, passive groove is the accurate mirror image that is parallel to the active groove plane at radiant body edge.Suitably, the entire length of passive groove is positioned within the scope of active groove entire length+/-10%.Preferably, the size of passive radiation body member and passive radiation body member are basic identical.
According to another aspect of the present invention, provide a kind of Wireless Telecom Equipment, having comprised:
Be coupled to the transceiver of radio frequency amplifier;
Active emitter element and passive radiation body member, active emitter element has the radiant body edge, and the passive radiation body member has the base edge (proximaledge) near this radiant body edge;
With active emitter element be couple to radio frequency amplifier feedback point and with active emitter element be couple to ground first grounding connector;
The passive radiation body member is couple to second grounding connector on ground;
Active groove extends to active emitter element inside from active notch in the radiant body edge; And
Passive groove is extending to the passive radiator element internal in the face of in the edge from passive notch.
Suitably, at least a portion radiant body edge and base edge are faced mutually.
Preferably, in using active emitter element, first and second resonance frequencys are provided, and the passive radiation body member is as parasitic antenna, and provide third and fourth resonance frequency, wherein the first and the 3rd resonance frequency is approaching toward each other, and the second and the 4th resonance frequency is also approaching toward each other.
Preferably, active notch and passive notch are offset each other.This notch and passive notch be suitably skew each other when described active emitter element is watched with plan view.In a kind of replacement, this notch and passive notch be suitably skew each other when described active emitter element is watched with end view.Suitably, active notch and passive notch are close to each other.
Description of drawings
In order to be more readily understood the present invention and to make it produce actual effect, will be with reference to reference to preferred embodiment shown in the drawings, wherein:
Fig. 1 is according to the block diagram that the present invention includes the Wireless Telecom Equipment of wireless radiation body device;
Fig. 2 is the perspective view according to the various piece of the Wireless Telecom Equipment among the Fig. 1 that the present invention includes the wireless radiation body device;
Fig. 3 is the plan view of first embodiment of antenna radiator device feature among Fig. 2;
Fig. 4 is according to the plan view of second embodiment of antenna radiator device feature of the present invention;
Fig. 5 is the cross section view that passes the 5-5 place of antenna radiator device feature among Fig. 4; And
Fig. 6 is frequency response of the present invention.
Embodiment
In whole accompanying drawing, the same numbers among the different figure is used to represent components identical.With reference to figure 1, wherein example a kind of Wireless Telecom Equipment of radio telephone 1 form, this radio telephone comprises the radio frequency communications unit 2 that is couple to processor 3 and communicates with.Input interface screen 5 and keyboard 6 also are couple to processor 3 and communicate with.
Processor 3 comprises encoder/decoder 11, and has the relevant read-only memory (ROM) 12 of memory encoding and decoded voice or other signals, and these signals may be sent or be received by radio telephone 1.Processor 3 also comprises microprocessor 13, and it is couple to encoder/decoder 11 by common data and address bus 16, character read-only memory (ROM) 14, random asccess memory (RAM) 4, static programmable memory 16 and the sim module 18 that can move.Each can both store selected Incoming text message and phone directory database TDb from other message static programmable memory 16 and sim module 18.
Microprocessor 13 has the port that couples keyboard 6, screen 5 and alarm module 15, and alarm module typically comprises loud speaker, vibrating motor and associated drive.Character read-only memory (ROM) 14 storage is used to decode or encode and may receives the code of the text message of keyboard 6 inputs by communication unit 2.In the present embodiment, character read-only memory 14 is the command code of storage microprocessor 13 (OC) also.Those of ordinary skill in the art will be appreciated that radio telephone 1 also has loud speaker and microphone and other assembly (not shown).
Radio frequency communications unit 2 is a kind of combination receiver and transmitters with aerial radiation body structure 7.Communication unit 2 has telecommunication circuit, and this circuit comprises the transceiver 8 that is couple to active emitter element 22 by radio frequency amplifier 9.Active emitter element 22 is related with passive radiation body member 23, and active emitter element 22 and passive radiation body member 23 all couple ground.Transceiver 8 also is couple to the combined modulator/demodulator 10 that communication unit 2 and processor 3 are coupled.The active emitter element 22 that couples with transceiver 8 has according to aerial radiation body device of the present invention with passive radiation body member 23.
In Fig. 2 and 3 example the parts of Wireless Telecom Equipment of radio telephone 1 form, this phone comprises, support the circuit board 21 and the conductive plate 24 (because it illustrates with shade in the middle of being clipped in circuit board 21) of radio frequency amplifier 9, transceiver 8, this conductive plate has the parts of the ground plane that is formed for circuit board 21 circuit grounds.And, have to form ground plane, be installed on or other typical components/modules and other (not shown for the sake of simplicity) conductive plates of electrical couplings circuit board 21 make up.Radio telephone 1 comprises the aerial radiation body device 30 with active emitter element 22, and is couple to transceiver 8 by the feedback point of feedback point pin 34 forms, and comprises radio frequency amplifier 9 and film trap 25 (the every other film trap on the circuit board 21 is not shown).Active emitter element 22 also is couple to ground by first grounding connector that couples pin 35 forms that couples with conductive plate 24.
Radiant body device 30 also has passive radiation body member 23, and this emitter element is couple to ground by second grounding connector with the form of the ground plane coupling pin 36 that is couple to conductive plate 24.Active emitter element 22 and passive radiation body member 23 typically are installed on the dielectric mount 27 with resonant cavity shell 27 forms and (are typically formed by the plastic dielectric material), and loud speaker is equipped with in its inside.
Show first embodiment of the detailed example of aerial radiation body device 30 parts among Fig. 3 especially.In this embodiment, radiant body device 30 is equipped with 23, two kinds of elements of active emitter element 22 and passive radiation body member and is typically formed by the conductive copper of flat horizontal surface shown in the plan view and comprise dielectric mount 27 on it.Active emitter element 22 has radiant body edge 37 and passive radiation body member 23 has base edge 38, and this edge and radiant body edge 37 are close.In this embodiment, radiant body edge 37 and base edge 38 mutually in the face of and in radiant body edge 37 active groove 39 extend to active emitter element 22 inside from active notch 40.Similarly, extending to passive radiation body member 23 inside in the face of passive groove 41 in the edge 38 from passive notch.As shown in, when with plan view active emitter element 22 and passive radiation body member 23 being shown, but active notch 40 and passive notch 42 are offset close mutually basically each other.And length is that the active groove 39 of (11mm+15mm) is big or small basically identical for passive groove 41 with length (11mm+13mm).More specifically, the entire length of passive groove 41 should be preferably located within the scope of active groove 39 entire length+/-10%.And passive groove 41 is basically along being parallel to the plane at radiant body edge 37 and the mirror image of active groove 39 does not line up.
With reference to figure 2 and 3, active emitter element 22 and passive radiation body member 23 have coplanar surface, and their boundary length, comprise that its each groove that forms the boundary length part is substantially the same.
With reference to Figure 4 and 5, example second embodiment of aerial radiation body device 50 parts.In the present embodiment, radiant body device 50 illustrates with side sectional view and comprises dielectric mount 51,53, two kinds of radiant bodies of active emitter element 52 and passive radiation body member is installed on it is typically formed by flat conductive copper.Active emitter element 52 has radiant body edge 57 and passive radiation body member 53 and has the base edge 58 close with radiant body edge 57.In this embodiment, radiant body edge 57 and base edge 58 face with each other, and active groove 59 extends to active emitter element 52 inside from active notch 60 in radiant body edge 57.Similarly, extending to passive radiation body member 23 inside in the face of passive groove 61 in the edge 58 from passive notch.Shown in plan view, active notch 60 and passive notch 62 are in alignment with each other and are closer to each other basically.And passive groove 61 is the accurate mirror image of active groove 59 along the plane that is parallel to radiant body edge 67.
And as shown in, active emitter element 52 and passive radiation body member 53 have the not flat surface of coplane, therefore when watching active emitter element 52 and passive radiation body member 53 with the side front view, active notch 60 and passive notch 62 do not line up.
The invention provides the small wide frequency band built-in aerial radiant body device that on allocated frequency band, to operate.Should be noted that in this manual, built-in aerial has antenna package and is contained in the communicator or antenna has the implication of the emitter element that forms communicator housing wall part.As shown in Figure 6, shown in embodiment have four frequency bands, these determine the active emitter element 22 or 52 by the first resonance frequency m1 and the second resonance frequency m2 are provided.Passive radiation body member 23 or 53 is as parasitic antenna and provide the 3rd resonance frequency m3 and the 4th resonance frequency m4.Those of ordinary skill in the art will understand, approaching toward each other and the second and the 4th resonance frequency m2 of the first and the 3rd resonance frequency m1, m3, and m4 is approaching toward each other.More specifically, active emitter element 22 or 52 boundary length (peripheral shape or formative factor) are near 820Mhz, provide the first resonance frequency ml at dB (S (1,1))=-9.099 places; Active groove 39,59 provides the second resonance frequency m2 near 1.710Ghz at dB (S (1,1))=-16.797 places; Passive radiation body member 23 or 53 is near 960Mhz, provide the 3rd resonance frequency m3 at dB (S (1,1))=-3.617 places; Passive groove 41,61 is near 1.99GHZ, provide the 4th resonance frequency m4 at dB (S (1,1))=-7.881.
Detailed description only provides preferred schematically embodiment, and is not intended to limit scope of the present invention, uses or structure.On the contrary, the those of ordinary skill in the art that is specifically described as of preferred schematically embodiment only provides the description that allows realization.Should be appreciated that the various changes that may make the function and the structure of element all do not depart from the illustrated the spirit and scope of the present invention of appended claims book.