CN204243211U

CN204243211U - There is the antenna system of low passive intermodulation

Info

Publication number: CN204243211U
Application number: CN201420532174.8U
Authority: CN
Inventors: 黄国俊; 黄伟达; J·黄志明
Original assignee: Laird Technologies Inc
Current assignee: Te Connectivity Solutions Ltd
Priority date: 2013-09-17
Filing date: 2014-09-16
Publication date: 2015-04-01
Anticipated expiration: 2024-09-16
Also published as: CN104518288B; CN104518288A; TWI538303B; WO2015041768A1; TW201517385A; TWM504361U

Abstract

The utility model relates to a kind of antenna system with low passive intermodulation.According to various aspects, disclose the illustrative embodiments of antenna system.In the exemplary embodiment, described antenna system consists essentially of ground plane and the first antenna and the second antenna.The first isolator is furnished with between described first antenna and the second antenna.Second isolator stretches out from described ground plane.This antenna system is constructed to operate with low passive intermodulation.

Description

There is the antenna system of low passive intermodulation

Technical field

The disclosure relates to a kind of antenna system with low PIM or favourable PIM (passive intermodulation) on the whole, and this antenna system can also have improvement and/or good shielding and bandwidth.

Background technology

This part will provide the background information relevant to the disclosure, but not necessarily prior art.

The example of foundation structure antenna system comprises ustomer premises access equipment (CPE), satellite navigation system, warning system, terminal, master station and domestic aerial.By the technology of fast development, along with will by the demand of the minimized in size of the size of CPE device or antenna system to keep little profile, the beamwidth of antenna have become a huge challenge.In addition, the multiaerial system with more than one antenna has been used to capacity increasing, coverage and cell throughout.

Equally by the technology of fast development, many devices have become multiple antennas all to meet the demand of terminal client.Such as, multiple antennas is used to multiple-input and multiple-output (MIMO) purposes so that adding users capacity, coverage and cell throughout.Along with current market trends towards economy, small and exquisite and compact device, use with the situation of multiple same antennas of form very close each other placement much because of size and spatial limitation.In addition, usually must have little profile for the antenna of ustomer premises access equipment, terminal station, master station or domestic aerial system, quality is light and physical size is compact, this make planar inverted-F antenna (PIFA) for these types application there is special attraction.

Fig. 1 shows conventional plane inverse-F antenna (PIFA).As shown in fig. 1, this basic engineering is made up of radiating patch elements 12, ground plane 14, short-circuit component 16 and electricity supply element 18.The width of radiating patch elements 12 and length determine the resonance frequency of expectation.The width of radiating patch elements 12 and the summation of length, be approximately quarter-wave (λ/4).Radiating patch elements 12 can be supported on the top of ground plane 14 by dielectric substrate.

Utility model content

This part will provide an overall outline of the present disclosure, instead of its all scope or whole feature intactly be disclosed.

According to various aspects, disclose the exemplary embodiment of antenna system example.In exemplary execution mode, antenna system consists essentially of ground plane and the first and second antennas.First isolator is arranged between described first and second antennas.Second isolator stretches out from this ground plane.Antenna system is configured to operate with low passive modulation.

There is an antenna system for low passive intermodulation, described in there is low passive intermodulation antenna system comprise: ground plane; First antenna and the second antenna; Be arranged in the first isolator between described first antenna and described second antenna; And from outward extending second isolator of described ground plane; Thus described antenna system is configured to operate with low passive intermodulation.

Described ground plane, described isolator and described first antenna and described second antenna are made by nonferromagnetic material; And/or described antenna system does not comprise any ferromagnetic material or ferromagnetic parts.

Described antenna system can operate with the passive intermodulation lower than-150 decibels to about 960 megahertzes and/or the carrier wave (dBc) from about 1710 megahertzes to the frequency of about 2700 megahertzes relative to from about 698 megahertzes.

The antenna system of described low passive intermodulation comprises further: the first connector and the second connector, and described first connector and the second connector all have at least one and be electrically connected at least one central contact portion of described first antenna or described second antenna accordingly and be electrically connected to the external contacts of described ground plane; And first electrical insulator and the second electrical insulator, described first electrical insulator and the second electrical insulator be respectively positioned described first connector and described ground plane and between described second connector and described ground plane to reduce described first connector and the electrical-contact area between the second connector and described ground plane, thus reduce passive intermodulation; Wherein, described ground plane and described first electrical insulator and the second electrical insulator comprise the opening run through wherein, with make the described central contact portion of described first connector and the second connector and described external contacts through and be electrically connected to described first antenna and the second antenna and be connected to described ground plane in the opposition side of described ground plane accordingly.

Described ground plane comprises the features be integrally formed, the features be integrally formed described in cable braid over braid is soldered to, thus described in the features that is integrally formed be configured for the direct electrical contact surface reduced between described cable braid over braid and described ground plane.

The features be integrally formed described in described ground plane comprises first pair of fin and second pair of fin, and described first pair of fin and second pair of fin are stamped and bend with acute angle relative to described ground plane from described ground plane.

Described ground plane and/or pedestal comprise the features be integrally formed, and are substantially perpendicular to described ground plane for being remained by described first isolator.

The described features be integrally formed comprises through opening from the outwardly multiple parts of described pedestal, and wherein said multiple partial cooperative is to remain on described first isolator between described multiple part by friction.

The described features be integrally formed comprises and being stamped and the first fin being substantially perpendicular to described ground plane and bending and the second fin from described ground plane, described first isolator comprises the upright wall type isolator with the first contrary side and the second side, described upright wall type isolator is located relative to described first fin and the second fin, make described first fin along described first side of described upright wall type isolator and described second fin along described second side of described upright wall type isolator, thus described first fin and the cooperation of the second fin are to remain on described upright wall type isolator between this first fin and second fin by friction.

Described second isolator comprises the extension being roughly T-shaped roughly between described first antenna and the second antenna of described ground plane, thus described in be roughly T-shaped extension increase the described ground plane that can be energized, this ground plane improves the isolation when low frequency.

The described antenna system with low passive intermodulation comprises further and is arranged in described ground plane and the dielectric adhesive tape between described first antenna and the second antenna, thus stops described first antenna and the direct electrical contact between the second antenna and described ground plane.

The described antenna system with low passive intermodulation comprises first parasitic antenna adjacent with the second antenna with corresponding described first antenna and the second parasitic antenna further to increase bandwidth, and wherein said first parasitic antenna and the second parasitic antenna do not carry out direct electrical contact with described first antenna and the second antenna.

Described antenna system can at least from about 698 megahertzes to the first frequency scope of about 960 megahertzes and from about 1710 megahertzes to the second frequency range of operation of about 2700 megahertzes; Or described antenna system can operating to the frequency range of about 2700 megahertzes from about 698 megahertzes.

Become obvious in the description that from then on place provides of the further scope of application.Description in this general introduction and particular example are only intended to carry out example and are not intended to limit the scope of the present disclosure.

Accompanying drawing explanation

View described herein is only used for selected execution mode is described and not all possible enforcement, and does not really want to limit the scope of the present disclosure.

Fig. 1 shows traditional planar inverted-F antenna (PIFA);

Fig. 2 is the exploded perspective view of the multiband antenna system being configured to the low PIM (passive intermodulation) had according to illustrative embodiment;

Fig. 3 is another exploded perspective view of antenna system shown in Fig. 2, and wherein ground plane (and upright wall type isolator and the antenna that is connected thereto) is mounted to pedestal;

Fig. 4 is that antenna system shown in Fig. 2 and Fig. 3 has been assembled into the plane graph on pedestal and/or after being installed to pedestal at various antenna element;

Fig. 5 is the stereogram of antenna system shown in Fig. 4 and also show the exemplary coaxial cable being connected to antenna;

Fig. 6 is the partial perspective view of coaxial cable shown in Fig. 5 and antenna, and shows as follows by way of illustration, and cable bearer can directly be formed from ground plane;

Fig. 7 is another partial perspective view of coaxial cable and antenna shown in Fig. 5 and Fig. 6, and shows as follows by way of illustration, and the center conductor of coaxial cable can be connected to antenna;

Fig. 8 shows the conventional method for coaxial cable braid over braid being welded to ground plane;

Fig. 9 shows the exemplary methods for coaxial cable braid over braid being welded to cable bearer, and this cable bearer is formed by the ground plane according to illustrative embodiment;

Figure 10 A and Figure 10 B are the stereogram of the exemplary NF bulk-head connector that can use together with antenna system shown in Fig. 2 to Fig. 5 according to illustrative embodiment and exemplary insulator respectively, the contact area that wherein this insulator contributes near ground plane minimize (or at least reducing) and thus by PIM minimise problems (or at least reducing);

Figure 11 is the cross-sectional view illustrated by way of illustration, and the NF bulk-head connector wherein shown in Figure 10 and insulator can be connected to ground plane and the antenna of antenna system shown in Fig. 2 to Fig. 5;

Figure 12 A, Figure 12 B and Figure 12 C are respectively the end view of the NF bulk-head connector shown in Figure 11 and look closely portion, which provide the exemplary dimensions (in millimeter, after coating) only illustrated according to illustrative embodiment;

Figure 13 is the partial perspective view illustrated by way of illustration, and wherein the center conductor of NF bulk-head connector and four external conductor/contact sites can be connected respectively to ground plane and the antenna of antenna system shown in Fig. 2 to Fig. 5;

Figure 14 be can with the stereogram of the exemplary antenna used together with the antenna system of illustrative embodiment, wherein this antenna comprises for the removable portion of solder connector, the fin that reduces for the additional fin and small-sized and/or size welding center conductor so that minimized (or at least reducing) PIM problem and inconsistent welding;

Figure 15 A, Figure 15 B and Figure 15 C be respectively can with in Fig. 2 to Fig. 5 according to the perspective interior view of the pedestal used together with the antenna system of illustrative embodiment, exterior perspective view and partial perspective view;

Figure 16 A can be used for the stereogram according to the ground plane in the antenna system of illustrative embodiment and parasitic antenna shown in Fig. 2 to Fig. 5, wherein ground plane comprises for the hole of the contact site of the connector of NF shown in Figure 10 and the opening of PCB support for directly forming (such as injection mo(u)lding etc.) in a substrate, and the size and dimension in gap wherein between parasitic antenna and ground plane can be used for the resonance regulating high frequency band and low-frequency band;

Figure 16 B can be used for the stereogram according to the part of the ground plane in the antenna system of another illustrative embodiment shown in Fig. 2 to Fig. 5, wherein ground plane comprise for the contact site of the connector of NF shown in Figure 10 hole and for by ground plane directly or form the PCB support of (such as punching type and bending fin etc.);

Figure 17 A is mounted to the ground plane of pedestal and the stereogram of parasitic antenna in Figure 16 A, and demonstrate by way of illustration, printed circuit board (PCB) (PCB) or upright wall type isolator can be supported by the PCB support of the pedestal through opening in the ground plane shown in Figure 16 A;

Figure 17 B shows the way of example that printed circuit board (PCB) (PCB) or upright wall type isolator can be supported by the PCB support of the ground plane shown in Figure 16 B;

Figure 18 A, Figure 18 B and Figure 18 C are vertical view, end view and the upward view of the antenna system shown in Fig. 2 to Fig. 5 after being positioned in the inner casing limited by pedestal and radome cooperation respectively;

Figure 19 A and 19B is the face upwarding stereogram of the antenna system shown in Fig. 2 to Fig. 5 after being positioned in the inner casing limited by pedestal and radome cooperation and top perspective view respectively, and shows the example of fixing N-type female (NF) the bulk-head connector configuration according to illustrative embodiment;

Figure 20 comprise measure for shown in Fig. 2 to Fig. 5, in radome there is voltage standing wave ratio (the VSWR) (S11 of the prototype of the example antenna system of the exit connector shown in Figure 18 B, the exemplary line graph of the shielding (S21, in units of decibel) S22) with to frequency;

It is directed and relative to the plane of antenna prototype with exit connector that Figure 21 shows radiating pattern test period figure;

Figure 22 to Figure 29 shows the radiating pattern (azimuthal plane, Phi 0 ゜ plane and Phi 90 ゜ plane) of first and second multiband antennas (showing with dotted line and solid line) of the prototype of the example antenna system measured for having exit connector shown in Fig. 2 to Fig. 5 and the figure of shown frequency respectively when 698 megahertzes (MHz), 824MHz, 894MHz, 960MHz, 1785MHz, 1910MHz, 2110MHz and 2700MHz is directed in figure 21;

Figure 30 and Figure 31 be measure for shown in Fig. 2 to Fig. 5, the PIM of the port one of the prototype of the example antenna system with the exit connector shown in Figure 18 B and port 2 is (relative to carrier wave (dBc) and frequency (unit is MHz), in units of decibel) exemplary line graph, wherein this Line Chart shows the low PIM performance (such as, lower than-150dBc etc.) when being in low-frequency band (Figure 30) and high frequency band (Figure 31);

Figure 32 comprise measured for shown in Fig. 2 to Fig. 5, in radome there is voltage standing wave ratio (the VSWR) (S11 of the prototype of the example antenna system of the fix N F bulk-head connector shown in Figure 19 A, the exemplary line graph of the shielding (S21, in units of decibel) S22) with to frequency;

Figure 33 to Figure 40 show measure for have shown in Fig. 2 to Fig. 5 the fix N F bulk-head connector shown in Figure 19 A, frequency is about in 698MHz, 824MHz, 894MHz, 960MHz, 1785MHz, 1910MHz, 2110MHz and 2700MHz respectively time the radiation diagram (azimuthal plane, Phi 0 ゜ plane and Phi 90 ゜ plane) of the first and second multiband antennas (illustrating with solid line and dotted line) of prototype of example antenna system; And

Figure 41 and Figure 42 be measure for shown in Fig. 2 to Fig. 5, the PIM (unit is dBc) of the port one of the prototype of the example antenna system with the fix N F bulk-head connector shown in Figure 19 A and port 2 to the exemplary line graph of frequency (unit is MHz), wherein this Line Chart shows low PIM performance when being in low-frequency band (Figure 41) and high frequency band (Figure 42) (such as lower than-150dBc, lower than-153dBc etc.).

Embodiment

More intactly illustrative embodiments is described now with reference to accompanying drawing.

The present inventor has realized that, need the antenna system of relatively little profile, this system has low PIM (passive intermodulation) (such as can as low PIM rated designs etc.), good or the bandwidth (such as meeting the LTE/4G application bandwidth of 698 megahertz to 960 megahertzes and 1710 megahertz to 2700 megahertzes) improved, isolation (such as when low-frequency band etc.) that is good or that improve, and/or provides more VSWR allowance aborning.Therefore, illustrative embodiment (such as 100 (Fig. 2 to Fig. 5) of antenna system disclosed herein, 200 (Figure 18 A, Figure 18 B, Figure 18 C), 300 (Figure 19 A and Figure 19 B) etc.) all there is low PIM rated designs or configuration.

In exemplary execution mode, along with bandwidth that is good or that improve and the isolation that obtains by introducing parasitic antenna and unique isolator structure, can by reducing the electric current on metal-metal contact surface and bonding area being minimized the design that (or at least reduction) realizes low PIM.The design of low PIM also has design flexibility and accommodation and has the two ability of the exit connector type (such as Figure 18 B and Figure 21 etc.) of consistency of performance that is good or that improve and fixed connector type (such as Figure 10 A and Figure 19 A etc.).Disclosed illustrative embodiment has bandwidth that is splendid or that increase, the isolation improved when not affecting whole bandwidth and improvement or low PIM.

According to many aspects of the present disclosure, exemplary execution mode can comprise one or more (or all) following characteristics and realizes or reach the object of low PIM.In an exemplary execution mode, antenna system does not preferably comprise any ferromagnetic material or comprises the ferromagnetic parts of correct coating, otherwise this ferromagnetic parts may become the source of PIM.Instead, radiant element and ground plane (antenna 110 in such as Fig. 2 and Fig. 3 and ground plane 112 etc.) all can be made up of brass or other nonferromagnetic material be applicable to.Connector and cable are all preferably PIM rated parts.

The radiant element of ground connection can according to the direct electrical contact that realize local coupling ground connection coming by introducing dielectric adhesive tape (in broad terms, dielectric members) below this radiant element and prevent between radiant element and ground plane.Dielectric adhesive tape 113 such as align in figure 3 to be positioned between antenna and ground plane.

For can be relatively little area by the contact weld of connector to the area of ground plane.Therefore, the solder contacts of relative small size can be utilized to be connected by connector or be grounded to ground plane.Such as in fig. 13, four relatively little bonding areas are set the contact 122 of connector 114 (Figure 10 A) is welded to ground plane 112 (Figure 13).

Dielectric components can be positioned between the upper surface of connector and ground plane to make the direct electrical contact electric insulation between the upper surface of connector and ground plane and to minimize (or at least reducing).Such as in fig. 2, circular dielectric or insulator 116 (the FR-4 fibrous glass etc. of such as reinforced epoxy laminated material) are alignd to be positioned between the upper surface of connector 114 and ground plane 112.

In addition, ground plane can comprise integral type and forms the features of (such as, punching press etc.) and carry out welding cable braid over braid.This features cable braid band with provide between ground plane minimized (or at least reducing) directly unique cross section of features of being formed as integral type of electrical contact surface contacting ground plane.Advantageously, this contributes to preventing (or at least reducing) any inconsistency of contact between cable braid band and ground plane.Such as in Fig. 6, Fig. 7 and Fig. 9, cable bearer 124 is directly formed (such as punching press etc.) by ground plane 112.Fig. 9 shows the cable braid band 126 being welded to punching press cable bearer 124.By comparing, Fig. 8 shows traditional approach coaxial cable braid over braid being welded to ground plane, and it especially can introduce inconsistent contact along the bottom of the cable braid band that there is not welding.In fig .9, there is not the contact of the bottom along cable braid band 126, this cable braid band because of punching press and reset ground plane but hollow or open to manufacture cable bearer 124.

Ground plane and/or pedestal can also comprise (such as punching press etc.) features of one or more integral type formation to keep PCB or upright wall type isolator to reduce bonding area, such as by eliminating pad required on ground plane, this pad can in addition for being attached to ground plane by PCB.The bonding area reduced decreases the PIM and inconsistency that occur due to welding.Such as in Fig. 2, Figure 16 A and Figure 17 A, PCB support 128 is by directly outwardly from this pedestal 133 by pedestal 133 (such as plastic base etc.) injection mo(u)lding.Multiple parts of PCB support 128 or multiple opening 123 (Figure 16 A) partially passed through in ground plane 112.As shown in Figure 17 A, multiple parts of PCB support 128 can keep or support PCB or upright wall type isolator 130, make only to need one or two pad 129 that PCB or isolator 130 are electrically connected to ground plane 112.Alternatively, Figure 16 B and Figure 17 B shows an example, and wherein ground plane 112 comprises the PCB support directly being formed (such as, punching press or bending fin 128 etc.) by this ground plane 112.The PCB support of ground plane 112 can keep or support PCB or upright wall type isolator 130, makes only to need single pad 129 that PCB or isolator 130 are electrically connected to ground plane 112.

According to another aspect of the present disclosure, exemplary execution mode can comprise one or more features to realize or reach bandwidth that is good or that improve.In an illustrative embodiment, be close to or between radiator, keep good isolation in the interpolation of radiant element side or introducing parasitic antenna with the bandwidth strengthening low-frequency band and high frequency band simultaneously.Such as in figures 4 and 5, the first and second parasitic antennas 132 are respectively positioned in the first and second antenna 110 sides or contiguous position, and not direct with its generation electrical contact.

According to another aspect of the present disclosure, illustrative embodiment can comprise one or more features to realize and to reach isolation that is good or that improve.In an illustrative embodiment, between two radiant elements, add isolator thus by increasing the electric current of ground plane and improving low-frequency band time isolation.Such as in Figure 5, T-shaped isolator 134 stretches out and increases the electric current of ground plane from ground plane 112.The isolation improved make more multiple antennas radiant element be positioned in same space volume or make overall less antenna module be used to equal number radiating element of antenna (such as limited space or need compact time final use etc.).

Fig. 2 to Fig. 5 shows and adopts the antenna system of one or more aspect of the present disclosure or the illustrative embodiment of antenna module 100.As disclosed herein, antenna system 100 is configured to have lower PIM and good bandwidth sum isolation.

Antenna system 100 comprises two antennas be spaced apart from each other on ground plane 112 110.In this example, antenna 110 is identical each other and relatively places near symmetrical each other on ground plane 112.In the execution mode of alternative, antenna 110 asymmetricly can be placed, it can be dissimilar or different, and/or is different from antenna 110 and configures.By illustrative mode, another exemplary execution mode can comprise one or more antenna (such as, PIFA etc.), as disclosed in pct international patent application WO 2012/112022, the full content of this application is incorporated herein by reference at this.

As shown in Figure 3, insulating adhesive tape 113 (in broad terms, dielectric components) is used between the bottom surface of antenna 110 and ground plane 112, to prevent the direct electrical contact between antenna 110 and ground plane 112.Therefore, in this example the radiant element of ground connection based on adjacent coupled ground connection.

Antenna 110 can be attached to pedestal 133 via machanical fastener etc., and such as antenna 110 and band 113 comprise and run through opening for receiving machanical fastener.In addition, dielectric support 136 can be located or be inserted between the upper surface of radiating patch elements 138 of pedestal 133 and antenna 110.This support 136 is configured for physically or mechanically supports the upper radiating patch elements 138 with the antenna 110 of enough structural intergrities.The execution mode of alternative can be configured to difference, such as when there is no support or have different, for support radiating patch elements and/or for antenna is connected to pedestal device.

Continue with reference to Fig. 2 to Fig. 5, the first and second parasitic antennas 132 are respectively positioned in the position of contiguous first and second antennas 110 or are arranged on its side, make parasitic antenna 132 not with antenna 110 or ground plane 112 directly electrical contact.In this example, the first and second parasitic antennas 132 be identical and connection (such as mechanical type is fastening) to time pedestal 133 (such as substrate etc.) relative to placing with being mutually symmetrical.The beamwidth of antenna that introducing parasitic antenna 132 enhances for low-frequency band and high frequency band ensure that isolation good between antenna 110 simultaneously.Similarly, the size and dimension in gap 149 can be adjusted to provide the slight adjustment on resonance for high frequency band and low-frequency band (Figure 16 A).

Antenna system 100 comprises the first and second isolators 130 and 134.The size of isolator 130,134, shape and position can be determined relative to antenna 110 and ground plane 112 (such as optimizing) to improve isolation and/or to increase bandwidth.

As shown in Figure 5, the second isolator 134 is essentially T-shaped and stretches out from ground plane 112 thus increase the electric current of ground plane.Isolator 134 is located substantially between antenna 110, makes to improve isolation when low-frequency band by increasing the electric current of ground plane.In this example, isolator 134 is single-piece or the part for ground plane 112, and it is formed (such as punching press etc.) for having the T-shape coplanar with ground plane 112.The execution mode of alternative can comprise the isolator of non-T-shaped and/or non-integration part that is independent, that be connected to ground plane.

As shown in Fig. 5 and Figure 17 A to 17B, the first isolator 130 comprises upright wall type isolator.This upright wall type isolator 130 can be configured so that the free edge on its top is identical with the height of the upper surface of the radiating patch elements 138 of antenna 110 above ground plane 112.The execution mode of alternative can comprise isolator between antenna 110, and it is configured to be different (such as non-rectangles, non-perpendicular to ground plane, higher or shorter etc.) from shown isolator.

Upright wall type isolator 130 is held in place by the global feature of pedestal 133 and/or ground plane 112, and this such as reduces bonding area by eliminating on ground plane for the demand of pad, and this pad can be used to PCB to be attached to ground plane 112 in addition.The bonding area reduced decreases the PIM and inconsistency that may occur due to welding.Such as in Fig. 2, Figure 16 A and Figure 17 A, PCB retainer 128 is directly outwardly from it by pedestal 133 (such as plastic base etc.) injection mo(u)lding.Multiple parts of PCB support 128 or the multiple of PCB support partially pass through the opening 123 in ground plane 112.As shown in figure 17 a, multiple parts of PCB support 128 can keep or support PCB or upright wall type isolator 130, make single or two pads 129 of only need that this PCB or isolator 130 are electrically connected to ground plane 112.

Alternatively, Figure 16 B and Figure 17 B shows another exemplary execution mode, and wherein ground plane 112 comprises the PCB support directly being formed (such as punching press and bending fin 128 etc.) by ground plane 112.The PCB support of this ground plane 112 can keep or support PCB or upright wall type isolator 130, makes only to need single pad 129 that this PCB or isolator 130 are electrically connected to ground plane 112.As illustrated in figure 16b, ground plane 112 comprises the first and second punching presses and bending fin 128, and they are substantially relatively or with the 3rd punching press and bending fin 128 is relative.Fin 128 is substantially perpendicular to ground plane 112.Upright wall type isolator 130 can keep or support in place by punching press and bending fin 128, and making only needs single pad 129 (Figure 17 B) that isolator 130 is electrically connected to ground plane 112.Such as, upright wall type isolator 130 has the first contrary side and the second side.This upright wall type isolator 130 is located relative to fin 128, make at least one fin along the first side of this upright wall type isolator 130 and the fin of at least one opposition side along the second side of this upright wall type isolator 130, make these fins 128 cooperate to be kept between which by upright wall type isolator 130 by friction.This isolator erecting device such as advantageously reduces bonding area to the demand of pad by eliminating on ground plane 112, and this pad can be used to isolator 130 to be attached to ground plane 112 in addition.The bonding area reduced decreases the PIM and inconsistency that may occur due to welding.

Upright wall type isolator 130 is substantially perpendicular to ground plane 112 and is vertical relative to this ground plane 112.In the execution mode that this specifically illustrates, antenna 110 is equally spaced with upright wall type isolator 130.Antenna 110 limits on the relative both sides that symmetry axis is arranged in upright wall type isolator 130 symmetrically or by upright wall type isolator 130, makes each antenna 110 be the mirror image of other antenna substantially.

During operation, upright wall type isolator 130 improves isolation.Frequency when isolator 130 works first by the length of isolator 130 horizontal segment and height determine.Ground plane 112 is arranged essentially parallel in the execution mode that horizontal segment is shown herein.

As shown in Fig. 2, Fig. 6, Fig. 7 and Fig. 9, ground plane 112 comprises integral type and forms the feature 124 of (such as punching press and bending fin 124 etc.) for welding cable braid over braid 126.Which feature provides the electrical contact surface of minimized between cable braid band 126 with ground plane 112 (or being at least reduce) using unique cross section of the features formed as integral type to contact ground plane 112.Advantageously, this contributes to preventing the inconsistency in (being at least reduce) contact between any cable braid band 126 and ground plane 112.In the execution mode that this is exemplary, ground plane 112 comprises first to second pair of punching press and bending fin 124, they relative to ground plane 112 with sharp bend (such as 30 degree etc.).By example, each fin 124 all can relative to ground plane 112 one-tenth 30 degree of angles, make first to and second pair of fin 124 in often pair of fin between approximately become 60 degree of angles.Fig. 9 shows welding point 125 and the cable braid band 126 of the whole cable bearer 124 being welded to ground plane 112.In fig .9, there is not the contact of the bottom 127 along cable braid band 126, this cable braid band is because of punching press and reorientate ground plane material but hollow or open, to manufacture cable bearer 124.By comparing, Fig. 8 shows for welding the conventional method of coaxial cable braid over braid 126 to ground plane, especially can introduce inconsistent contact along the bottom 127 of cable braid band 126 like this, wherein weld with not existing between ground plane at cable braid band 126.

With reference to Fig. 6, Fig. 7, Figure 11, Figure 13 and Figure 14, the center conductor 131 of coaxial cable 137 can connect (such as welding etc.) to the center conductor of antenna 110 and connector 114 or contact 120.Look from below, connector 114 can be located so that, the center contact 120 of connector is through the hole (Figure 11 and Figure 13) in the fin 140 of antenna 110.Go seen from above, the center conductor 131 of coaxial cable 137 can be arranged on fin 140 with physical electrical contact or near the mode of the center conductor 120 of connector, and welds together afterwards.

In order to realize welding object, as shown in figs. 13 and 14, a part 142 for antenna 110 can be removed (such as excision etc.).Antenna 110 also comprises fin 144, and it is less and/or reduces the size PIM problem that (or at least reducing) may occur due to welding minimizing and nonuniformity.

Antenna system 100 is also configured to have relatively little area and the external contacts 122 of connector 114 is welded to ground plane 112.As shown in figure 13, there are four relatively little bonding areas for the contact 122 of connector 114 is soldered to ground plane 112 (Figure 10 A).As shown in Figure 16, ground plane 112 comprises opening 117 and extends there through with the center contact 120 and four external contacts 122 that make connector.Less bonding area also contributes to the design providing low PIM.

Figure 10 to Figure 12 C shows the exemplary execution mode of of connector 114, and it can use together with antenna system 100.As shown in the figure, connector 114 comprises central contact or pin 120 and four external contacts or pin 122.Connector 114 also comprises nut 146, stop washer 148 and O shape ring 150.

Advantageously, connector 114 is designed to have less welding pin to reduce bonding area, thus reduces PIM.The base material of connector shell is nonferromagnetic material, such as three metal alloys or Albaloy.These pins or contact are also made up of nonferromagnetic material, such as copper beryllium alloy.By using nonferromagnetic material, antenna system will have better or lower PIM performance.

In a special example, connector body/shell coating is the brass with Albaloy surface.Contact 120,122 is the copper beryllium alloy with gold surface.O shape ring 150 is silicon rubber.Stop washer 148 and nut 146 are the brass with Albaloy/copper surface.In the example that this is special, connector 114 also has the impedance of 50 ohm, scope is in the operating temperature of maximum VSWR and-55 ゜ C to+125 ゜ C of the frequency of 0 to 6GHz, overfrequency scope 1.2 times.Special material, size and technical data are just to the object of example instead of the object in order to limit.The execution mode of alternative can comprise connector, and it is configured to different, such as, be made from a variety of materials, different sizes, different technical data etc.

As shown in Figure 2, dielectric components or insulator 116 are positioned between the upper surface of connector 114 and ground plane 112 to make the direct electrical contact between the upper surface of connector and ground plane 112 insulate and to minimize (or at least reducing).In the execution mode that this is exemplary, insulator 116 is circular and is made up of FR-4 fibrous glass reinforced epoxy resin laminate.As shown in Figure 10 B, insulator 116 comprises opening 118 and extends there through for being electrically connected (such as welding etc.) respectively to antenna 110 and ground plane 112 to make the center contact 120 of connector and four external contacts 122.The execution mode of alternative can comprise the insulator of different configuration, such as not rounded and/or be made up of different materials.

The configuration of ground plane 112 can be depended on, depends on the final use be intended to for antenna system 100 at least partly.Therefore, the special shape of ground plane 112, size and material (such as brass, other nonferromagnetic material etc.) can change or customize to adapt to different operability, functional and/or physics needs.But consider the lower surface that antenna 110 is relatively little, ground plane 112 is configured to enough large to become the ground plane played one's part to the full for antenna system 100.

In the execution mode shown in Figure 16, ground plane 112 has trapezoidal part and the part of circle.Ground plane 112 can be sized or prune to match relatively little radome pedestal (pedestal 233 in such as Figure 18 C, the pedestal 333 etc. in Figure 19 A) and goes up and adapt to radome or housing (radome 235 in such as Figure 18 A, the radome 335 etc. in Figure 19 A).The execution mode of alternative can comprise the ground plane of the difference configuration with other shape, all shapes as shown in Figure 11 of other shape, and non-trapezoidal, non-rectangle, entirety be rectangle, entirety is trapezoidal etc.

Utilize ground plane, can increase or maximize length to increase bandwidth.As mentioned above, but the size of ground plane 112 can be enough little, and it can be limited in relatively little radome assembly.Such as, exemplary execution mode can comprise the ground plane 112 that is configured (such as determining shape and size) in case be installed in there is about 219 millimeters or more minor diameter circular antenna cover pedestal 233 on (being presented in Figure 18 C).

Less ground plane may not have enough for the current length of some terminal uses.As shown in FIG. 4, ground plane 112 comprises T-shaped extension or isolator 134.This isolator is by increasing the current length of ground plane 112 and improving isolation and play the object improving bandwidth.

With reference to Figure 14, the driving radiant section of antenna 110 comprises radiating patch elements 138 (or more broadly, upper radiating surface or planar radiator).Radiating patch elements 138 comprises for the formation of multi-frequency (such as from 698 megahertzes to 960 megahertzes and from 1710 megahertzes to the frequency etc. of 2700 megahertzes) and the slot 139 for the modulating frequency when high band.Slot 139 can be configured so that, antenna 110 improves return loss level for higher repairing when high-frequency or high band.For the selection that little profile is repaired, slot in other embodiments can without the need to improving high band.In this exemplified exemplary embodiment, slot 139 is substantially rectangle (part 142 except removing) and splits radiating patch elements 138 so that antenna 110 is configured to resonance or at least first frequency scope and can be different from the second frequency range of operation of the first frequency scope such as (such as non-overlapped, disjoint, higher).Such as, this first frequency scope can be from about 698 megahertzes to about 960 megahertzes, and this second frequency scope can be from about 1710 megahertzes to about 2700 megahertzes simultaneously.Or such as antenna 110 can operate across the single broadband from about 698MHz to about 2700MHz.But when not departing from disclosure scope, slot 139 configurable for different frequency ranges and/or have any other be applicable to shape, such as straight line, curve, wave, meander line, rhizoma nelumbinis line and/or non-linear shape etc.Slot 139 is the parts removing electric conducting material in radiating patch elements 138.Such as, radiating patch elements 138 can be formed with slot 139 at first, or slot 139 can be formed from radiating patch elements 138 by removing conductive material, such as, etch, cut, punching press etc.In another other execution mode, slot 139 can be formed by non-conductive or dielectric material, and it is such as added on upper radiating patch elements 138 by modes such as printings.

Radiating patch elements 138 is isolated with the lower surface 141 of antenna 110 and is arranged above it.By means of only citing, radiating patch elements 138 can comprise top surface, its position of about 20 millimeters above the bottom of lower surface.All only for the object of example in this this size provided and other sizes all, because other execution mode can be different size.

In this example, radiating patch elements 138 and lower surface 141 substantially parallel to each other and be also plane or smooth.The execution mode of alternative can comprise different configurations, such as non-planar, non-flat forms formula and/or non-parallel radiant element and lower surface.

Antenna 110 comprises feed element 143 (Fig. 2, Fig. 3 and Fig. 7).Fin 140 (Fig. 7) provides along the bottom of this feed element 143 or is operable as feed point.The center conductor 131 of coaxial cable 137 and the center contact 120 of connector 141 can be electrically connected to each other (such as weld) and be electrically connected to fin 114 for being fed to antenna 110.

When operating, the feed point of antenna 110 can receive signal to be irradiated by aerial radiation surface mount elements 138 from coaxial cable 137, and these signals can by coaxial cable 137 from receptions such as transceivers.On the contrary, coaxial cable 137 can from the feed point Received signal strength of antenna 110, and these signals are received by radiating patch elements 138.The execution mode of alternative can comprise other feeding means or the device for being fed to antenna 110 on coaxial cable (such as transmission line etc.) side.

With reference to Fig. 3, feed element 143 to be electrically connected between radiating patch elements 138 and lower surface 141 and to extend at this.Because feed element 143 can be defined or regard as antenna 110 between radiating patch elements 138 and lower surface 141 by the side shown in entirety, so feed element 143 can be wider.In the execution mode that this is exemplary, feed element 143 to be electrically connected between the edge of radiating patch elements 138 and lower surface 141 and to extend at this.In other embodiments, but, feed element with inside isolated position, edge on can be electrically connected to the lower surface of radiating patch elements and/or antenna.

Also as shown in Figure 3, feed element 143 comprises the taper of the opposed side portions along this feed element 143 or inside tapered features 145.Have that the feed element 143 in tapered feature portion 145 is configurable widens the beamwidth of antenna for the object of impedance matching, make it possible to carry out operational antennas 110 with at least two frequency ranges.

In this illustrated embodiment, tapered feature portion 145 comprises the lateral edge portions of feed element 143, the centre of its little by little or angularly inwardly this feed element 143.Unlike the lateral edge portions 145 of, feed element 143 along these marginal portions from radiating patch elements 138 to downstream on the direction of lower surface 141 little by little or angularly inwardly each other.Therefore, to be close to and the upper part being connected to the feed element 143 of radiating patch elements 138 reduces width because of tapered feature portion or inside angled side edge portions 145.In the execution mode of alternative, feed element 143 can comprise only one or do not comprise tapered feature portion.

The lower surface 141 of antenna 110 can also be considered to ground plane.But according to special final use, the size of lower surface 141 can be relatively little and be not enough to provide fully effective ground plane.In such execution mode, lower surface 141 mainly can be used for antenna 110 to be mechanically attached to pedestal 133, this pedestal and then be connected to enough large ground plane.

Antenna 110 also comprises the first and second short circuit parts 160,162.This first and second short circuits part 160,162 to be electrically connected between radiating patch elements 138 and lower surface 141 and to extend at this.In the execution mode that this is exemplary, the first and second short circuit parts 160,162 are electrically connected by along the edge of radiating patch elements 138 and lower surface 141.In other embodiments, but the first and/or second short circuit part 160,162 can be electrically connected to radiating patch elements 138 and/or lower surface 141 on the inside position of opening with marginating compartment.In addition, the first and second short circuit parts 160,162 also can contribute to the top of the lower surface 141 radiating patch elements 138 being mechanically supported on antenna 110.

First short circuit part 160 is configurable or formed to provide operation or the function of base antenna.Such as, the first short circuit part 160 is configurable or be formed as using less radiating patch elements 138, such as, be less than the paster antenna of a half-wavelength.By way of example, the size of radiating patch elements 138 can be defined as making, the summation of its length and width is 1/4th wavelength length (1/4 λ) of approximately required resonance frequency.

Second short circuit part 162 configurable or formed so as first, low-frequency range or bandwidth (such as from 698 megahertzes to the frequency etc. of 960 megahertzes) time improve or improve the bandwidth of antenna 110.Therefore, the second short circuit part 162 can make to use less paster by broadened bandwidth.Therefore this exemplary antenna 110 radiant element 138 of comprising two short circuit (via element 160,162) and having a slot 139 is with the bandwidth exciting multiple frequency to improve antenna 110 simultaneously.

In the execution mode that this is exemplary, the first short circuit part 160 is smooth or plane formula, rectangular and perpendicular to upper radiating patch elements 138 and lower surface 141 substantially.The execution mode of alternative can comprise the first short circuit part of different configuration, and such as non-flat forms formula short circuit part and/or short circuit part are not orthogonal to radiating patch elements 138 and/or lower surface 141.

Same in this illustrative embodiment, the second short circuit part 162 is configured such that, its entire length is greater than the spacing or gap of radiating patch elements 138 and lower surface 141 being separated.In this example, the second short circuit part 162 has non-planar or the configuration of non-flat forms formula.As shown in Figure 14, the second short circuit part 162 comprises first or lower part 164 that be smooth or plane formula.Part I 164 is contiguous and perpendicular to the lower surface 141 of antenna 110.Second short circuit part 162 also comprises vicinity and is connected to second or the upper part 166 of radiating patch elements 138.This Part II 166 and Part I 164 are not coplanar and outwardly relative to this Part I 164 or extends, therefore provide have three-dimensional, the second short circuit part 162 of non-flat forms formula or non-planar configuration.

By way of example, Part II 166 can comprise sweep, building trapezoidal portions, the part with staged configuration etc.In the execution mode of alternative, the difform first and/or second short circuit part can be arranged between radiating patch elements and the lower surface of antenna.Such as when viewed from the side, the second short circuit part 162 can have smooth configuration.Second short circuit part can perpendicular to the upper surface of antenna 110 and lower surface, wherein when viewed from front or the back side, this the second short circuit part 162 can have tortuous or nonlinear configuration, make its length than antenna upper and lower surface between spacing distance or gap long.Second short circuit part can be not orthogonal to upper surface and the lower surface of antenna, wherein this second short circuit part 162 to have than the upper and lower surface of antenna between the long length of spacing distance or gap.First and second short circuit parts 160,162 should not be only limitted to the given shape shown in accompanying drawing.

Fig. 3 shows the capacitive load part 170 of antenna 110, its configuration or formed (such as bending or fold back) for second, high-frequency range or high bandwidth (such as from 1710 megahertzes to the frequency etc. of 2700 megahertzes) time the capacitive load of the bandwidth for widening antenna 110 is provided.As shown in FIG. 3, this element 170 extends internally from feed element 143 and is substantially disposed between the lower surface 141 of radiating patch elements 138 and antenna 110.The execution mode of alternative can be configured to and shown in Fig. 3 be different (such as, when not having capacitive load or back bending part etc.).

As shown in Figure 14, the execution mode of the antenna 110 illustrated comprises and is positioned at capacitive load part on two anti-both sides of the second short circuit part 162 or stitch 172.These elements 172 are configured or be formed as in case produce be used for by antenna 110 be tuned to the capacitive load of one or more frequency.Such as, element 172 can be arranged to by antenna 110 be tuned to first or low-frequency range or low bandwidth (such as from 698 megahertzes to the frequency etc. of 960 megahertzes) and be tuned to second or high frequency or high bandwidth (such as from 1710 megahertzes to the frequency etc. of 2700 megahertzes).The execution mode of alternative can be configured to be different (such as when not having capacitive load or stitch etc.).

In exemplary execution mode, antenna 110 can conduct electricity nonferromagnetic material (such as brass etc.) by single-piece and form the mode of stamping material part and form as one formula or monomer-type by punching press (such as via single punching press or continuous punching technology etc.) and after this bending, folding or other.Antenna 110 can not comprise any dielectric (such as plastics) substrate, and it mechanically supports above lower surface 141 or above the ground plane of antenna 110 or hangs radiating patch elements 138.Instead, can by the upper radiating patch elements 138 of the short circuit part of antenna mechanically supporting antenna 110 above lower surface 141.Therefore, antenna 110 can be considered to be to have between radiating patch elements 138 and lower surface 141 inflates substrate or air gap, and this makes to have saved cost because eliminating dielectric substrate.The execution mode of alternative can be included in the lower surface of ground plane or antenna and/or one or more non-Unitary is formed but is attached to the dielectric substrate of radiating patch elements on the parts of antenna or the upper support of element respectively.

The material of wide region can be used for the parts of antenna system disclosed herein.By way of example, antenna, isolator and ground plane can be all made up of brass or nonferromagnetic material.In this example, non-any ferromagnetic material or ferromagnetic parts can be preferably, and may be the source of other PIM.According to the adaptability of the material for welding, hardness and the specific nonferromagnetic material of original selection can be become.

Figure 18 A to Figure 18 C shows the illustrative embodiment 200 comprising antenna system 100 (Fig. 2 to Fig. 5).Radome 235 is positioned in the top of antenna system 200 and is connected to pedestal 233.In this example, pedestal 233 has the diameter (such as, 218.7+/-1 millimeter etc.) being about 219 millimeters.Whole radome and base assembly (Figure 18 B) have the whole height (such as, 43.5+/-1 millimeter etc.) being about 43.5 millimeters.Is from the outwardly threaded portion of pedestal 233 equally shown in Figure 18 B.Only exemplarily, threaded portion can have about 50.8 millimeters and 1 " thread size of-8.Also demonstrate from threaded portion outward extending exit formula connector.Can by pedestal 233 to be positioned on surface-supported side and mounting nuts 246 and stop washer or liner 248 (such as, backing plate etc.) to be installed and be tightened to system 200 that the threaded portion on surface-supported opposite side fixes up an aerial wire.In the illustrative embodiments breaking rubber locking liner into two with one's hands, rubber locking liner can be removed and not use when antenna system 200 is installed to ceiling tile rubber to lock liner.The exemplary size provided in accompanying drawing and other sizes all given here are only the use of example, and size can be set to different by the execution mode therefore selected else.

Figure 19 A and Figure 19 B shows the illustrative embodiment 300 also comprising antenna system 100 (Fig. 2 to Fig. 5), and wherein radome 335 is installed in the top of antenna system 300 and is coupled to pedestal 333.But this illustrative embodiment 300 replaces the exit formula connector shown in Figure 18 B and comprises fix N F bulk-head connector.

Figure 20 to Figure 29 provides the Measurement and analysis result of the test model 200 shown in Figure 18 A, Figure 18 B and Figure 18 C.This test model 200 comprises antenna system 100 (Fig. 2 to Fig. 5), and it to be installed in radome and to be configured to have exit formula connector.These analysis results are only the use of example and are not intended to restriction.

More particularly, Figure 20 comprise in order to original antenna system 200 measure voltage standing wave ratio (VSWR) (S11, S22) and isolation (S21 is in units of decibel) to the exemplary line graph of frequency.Substantially, Figure 20 show utilize good voltage standing wave ratio (VSWR) and to utilize between two antennas 110 relatively preferably isolation to operate the process of original antenna system 200.

Figure 22 to Figure 29 show the first and second multiband antennas 110 of the original antenna system 200 with exit formula connector are measured radiation diagram (azimuthal plane, PHi 0 ゜ plane and PHi 90 ゜ plane) (with dotted line and solid shown in) and in figure 21 shown in, the figure orientation of frequency respectively when 698 megahertzes (MHz), 824MHz, 894MHz, 960MHz, 1785MHz, 1910MHz, 2110MHz and 2700MHz.In general, Figure 22 to Figure 29 shows the radiation diagram (little profile antenna radiation diagram) that is equivalent to omnidirectional and the good efficiency of antenna system 200.Therefore, antenna system 200 has large bandwidth, and this is allowed for the multioperation frequency range of the radio communication device comprising FDD and TDD LTE frequency or frequency range.In addition, the antenna system 200 of this illustrative embodiment has the polarization as conventional PIFA antenna (PIFA10 such as, shown in Fig. 1) such vertical direction or horizontal direction.

Figure 30 and Figure 31 is that passive intermodulation (PIM) is to the port one of original antenna system 200 and the exemplary line graph of 2 frequencies measured with exit formula connector (Figure 18 B).As shown in the figure, antenna system 200 all has lower PIM performance (such as lower than-150dBc etc.) in low-frequency band (Figure 30) and high frequency band (Figure 31).Such as antenna system 200 can preferably have-153dBc low PIM or at low-frequency band and the lower PIM of high frequency band.

Below that there is the table 1 and the table 2 that the first and second antennas 110 (Fig. 2 to Fig. 5) of the original antenna system 200 (Figure 18 B) with exit formula connector are carried out to the performance combined data measuring gained.As shown in the tables, the original antenna system 200 with exit formula connector has good efficiency by whole frequency band, and at low-frequency band place, effect is better.

Table 1 (there is the first antenna of exit connector)

Table 2 (there is the second antenna of exit connector)

Figure 32 to Figure 42 provides and measures drawn analysis result to the test model 300 shown in Figure 19 A and Figure 19 B.Test model 300 comprises antenna system 100 (Fig. 2 to Fig. 5), and it to be installed in radome and to be configured with NF bulk-head connector.These analysis results are only the use of example, and not intended to be limiting.

More particularly, Figure 32 comprises and carries out measuring gained voltage standing wave ratio (VSWR) (S11, S22) and isolation (S21 is in units of decibel) to the exemplary line graph of frequency to artificial antenna system 300.As a rule, Figure 32 show with good voltage standing wave ratio (VSWR) and between two antennas 110 relatively preferably isolation carry out the process of operation simulation antenna system 300.

Figure 33 to Figure 40 shows the radiation diagram (azimuthal plane, PHi 0 ゜ plane and PHi 90 ゜ plane) (shown in solid line and dotted line) measured under the frequency of about 698 megahertzes (MHz), 824MHz, 894MHz, 960MHz, 1785MHz, 1910MHz, 2110MHz and 2700MHz respectively the first and second multiband aerials 110 of the artificial antenna system 300 with fixing NF bulk-head connector (Figure 19 B).Figure 21 illustrates the figure orientation of some row tests.As a rule, Figure 33 to Figure 40 shows the radiating pattern (little profile antenna radiation diagram) that is equivalent to omnidirectional and the good efficiency of antenna system 300.Therefore, antenna system 300 has large bandwidth, and this is allowed for the multioperation frequency band of the radio communication device comprising FDD and TDD LTE frequency or frequency band.In addition, the antenna system 300 of this illustrative embodiment has the polarization as conventional PIFA antenna (the traditional PI FA10 such as, shown in Fig. 1) such vertical direction or horizontal direction.

Figure 41 and Figure 42 is to the exemplary line graph of frequency to the port one of the artificial antenna system 300 with fixing NF bulk-head connector (Figure 19 B) and 2 passive intermodulations (PIM) measured.As shown in the figure, antenna system 300 all has lower PIM performance (such as lower than-150dBc etc.) in low-frequency band (Figure 41) and high frequency band (Figure 42).Such as antenna system 300 preferably can have the low PIM of-153dBc or the PIM lower when low-frequency band and high frequency band.

Below that there is the table 3 and the table 4 that the first and second antennas 110 (Fig. 2 to Fig. 5) of the artificial antenna system 300 (Figure 19 B) with fixing NF bulk-head connector are carried out to the performance combined data measuring gained.As shown in the tables, the artificial antenna system 300 with fixing NF bulk-head connector has good effect by whole frequency band, and when low-frequency band, effect is better.

Table 3 (there is the first antenna of fixing NF bulk-head connector)

Table 4 (there is the second antenna of fixing NF bulk-head connector)

The illustrative embodiment of antenna system disclosed herein allows the multioperation frequency band more than radio communication device.By way of example, antenna system disclosed herein can be configured to exercisable or as 3GPP (third generation partner program) the covering FDD (Frequency Division Duplexing (FDD)) that limits and TDD (time division duplex) LTE (Long Term Evolution) frequency range (below table 5).By background technology, different frequency bands is used to be undertaken sending and receiving operation by FDD technology, and namely transmit and receive data signal non-interference.By comparing, TDD technology distributes different time threads for uplink and downgoing line in same frequency band.

Table 5

Frequency band	Uplink MHz	Downgoing line MHz
				1	1920-1980	2110-2170	FDD
2	1850-1910	1930-1990	FDD
				3	1710-1785	1805-1880	FDD
4	1710-1755	2110-2155	FDD
				5	824-849	869-894	FDD
6	830-840	875-885	FDD
				7	2500-2570	2620-2690	FDD
8	880-915	925-960	FDD
				9	1749-1784	1844-1879	FDD
10	1710-1770	2110-2170	FDD
				11	1427-1452	1475-1500	FDD
12	698-716	728-746	FDD
				13	777-787	746-756	FDD
14	788-798	758-768	FDD
				17	704-716	734-746	FDD
18	815-830	860-875	FDD
				19	830-845	875-890	FDD
20	832-862	791-821	FDD
				21	1448-1463	1496-1511	FDD
33	1900-1920	1900-1920	TDD
				34	2010-2025	2010-2025	TDD
35	1850-1910	1850-1910	TDD
				36	1930-1990	1930-1990	TDD
37	1910-1930	1910-1930	TDD
				38	2570-2620	2570-2620	TDD
39	1880-1920	1880-1920	TDD
				40	2300-2400	2300-2400	TDD

In exemplary execution mode, the antenna system comprising one or more multiband can (such as have two short circuit part and from the PIFA antenna amendment shown in Fig. 1, have the amendment PIFA etc. of two short circuit part) can operate to cover and allly listed abovely has the frequency range of good voltage standing wave ratio (VSWR) and have relatively good efficiency.The execution mode of alternative can comprise that can to operate be at least above all fixed or than above all fixed more frequencies and/or the antenna system that can operate the frequency different from above-mentioned fixed frequency.

The illustrative embodiment of antenna system disclosed herein (such as 100,200,300 etc.) is applicable to application widely, such as will use more than one antenna, such as LTE/4G application and/or infrastructure antenna system (such as client device (CPE), satellite navigation system, warning system, terminal, center and domestic aerial etc.).Antenna system (such as 100,200,300 etc.) can be configured to be used as omnidirectional's mimo antenna, although aspect of the present disclosure is not limited in omnidirectional and/or mimo antenna.Antenna system disclosed herein (such as 100,200,300 etc.) can be implemented in the electronic device, such as Machine To Machine, vehicle, building unit etc.In the case, built-in aerial parts usually will be built into electronic equipment casing and are covered by it.As another example, antenna system can instead be accommodated in radome fairing, and this radome fairing can have lower profile.In the latter case, built-in aerial parts will be accommodated in radome fairing and be covered by this radome fairing.Therefore, antenna system disclosed herein should not be limited to any one special terminal use.

Illustrative embodiments is provided as: this will be openly detailed and scope is conveyed to those skilled in the art comprehensively.List many details, such as the embodiment of concrete parts, device and method is thoroughly to understand execution mode of the present utility model.It is to be understood that without the need to adopting detail for those technical staff in this area; Illustrative embodiments can be embodied in many different forms; And illustrative embodiments should be interpreted as restriction scope of the present utility model.In some illustrative embodiments, do not describe known processes, well known device structure and known technology in detail.In addition, object only in order to illustrate provides the advantage and improvement that can realize by one or more execution mode of the present utility model, illustrative embodiments disclosed herein do not limit scope of the present utility model, because can provide all or do not provide above-mentioned advantage and improvement completely and still fall in scope of the present utility model.

Concrete size disclosed herein, concrete material and/or concrete shape are in fact embodiments, do not limit scope of the present utility model.The special value of given parameters disclosed herein and the scope of special value are not got rid of may other numerical value useful in one or more the embodiment disclosed herein and number range.And, it is contemplated that: any two special values of design parameter described herein can limit the end points of the number range being suitable for given parameters (the first numerical value of such as given parameters and openly can being interpreted to of second value: the arbitrary numerical value between the first numerical value and second value also can be used for given parameters).Such as, if parameter X is illustrated as to have numerical value A and be illustrated as at this have numerical value Z, so it is contemplated that: parameter X can have the number range from about A to about Z.Similar, it is contemplated that: whether open (no matter these scopes intussusception, overlap or difference) of two or more number ranges of parameter is included the combination of all possible number range, may require the end points combinationally using disclosed scope of this number range.Such as, if parameter X is illustrated as at this numerical value had in 1 to 10 or 2 to 9 or 3 to 8 scopes, it is contemplated that so equally: parameter X can have other number range comprising 1 to 9,1 to 8,1 to 3,1 to 2,2 to 10,2 to 8,2 to 3,3 to 10 and 3 to 9.

Term is only to describe detailed illustrative embodiments as used herein, is not intended to limit.As used herein, singulative " " and " this/that " also can be intended to comprise plural form, clearly represent unless context separately has.Term " comprises ", " comprising " and " having " be inclusive, and thus specifically illustrate the existence of described feature, entirety, step, operation, element and/or parts, but do not get rid of the existence or additional of one or more further feature, entirety, step, operation, element, parts and/or its combination.Not the step of method described here, process and operation will be built into necessarily require it to perform, unless this detailed sequence is specifically defined as execution sequence according to described or shown detailed sequence.Also it should be understood that and can adopt step that is additional or alternative.

When element or layer be called as "---on ", " being engaged to ", " being connected to " or " being attached to " another element or layer time, element or layer may directly exist----go up, engage, connect or be attached to other element or layer, or intermediary element or layer may be there is.By comparison, when element be called as " directly exist---on ", " being directly engaged to ", " being connected directly to " or " being attached directly to " another element or layer time, intermediary element or layer may not be there is.Other word for describing relation between element (such as " between---between " and " directly exist---", " adjoining " are relative to " directly adjoining " etc.) should be explained in an identical manner.As used in this, term " and/or " comprise association one or more list in any one or all combinations.

Term " about " represents when being used for numerical value: allow result of calculation or measurement result to owe accurately (close to exact value a little in numerical value; Approximate or reasonably near numerical value; Almost).For a certain reason, if the inaccuracy provided by " about " in addition not with this usual meaning by this area understand, so as used herein " about " represent can by the change at least measured or use the conventional method of these parameters and produce.Such as, term " roughly ", " about " and " substantially " can be used to refer within the scope of fabrication tolerance (such as, angle +/-30 ', 0 plane system is +/-0.5, and 1 plane system is +/-0.25, and 2 plane systems are +/-0.13 etc.) at this.Whether no matter changed by term " about ", claim all comprises equivalent amount.

Although term first, second, third, etc. can be used to describe Various Components, parts, region, layer and/or part at this, these elements, parts, region, layer and/or part should not limited by these terms.These terms can only for distinguishing an element, parts, region, layer or part and other region, layer or partly different.Do not imply order or order when the term using at this such as " first ", " second " with other many term and so on, clearly represent unless context has.Therefore, the first element below discussed, parts, region, layer or part can be referred to as the second element, parts, region, layer arc part and do not depart from the teaching of illustrative embodiments.

The spatially relevant term of such as " inside " " outside " " down below " " in below ", " bottom " " up " " top " etc. and so on can be used for being convenient to describe with the relation describing the element of shown in accompanying drawing or feature and another element or feature at this.Spatially relevant term also can be intended to the different azimuth be included in device or operation except comprising the orientation described in accompanying drawing.Such as, if the device in accompanying drawing is operated, be so described as be at element below other element or feature or beneath and then can be oriented in above other element or feature.Therefore, embodiment term " in below " can comprise " up " and " in below " two orientation.Device by addition directed (90-degree rotation or with other orientation rotation), thus can correspondingly explain description language spatially relevant as used herein.

In order to the object illustrated with describe provide execution mode in front description.Be not intended limit or restriction the utility model.The discrete component of embodiment, expection or described purposes or feature be not substantially restricted to this embodiment, but even if clearly do not illustrate or describe out, be tradable in appropriate circumstances and can be used in selected execution mode.Also same execution mode can be changed in many ways.These changes are not considered to depart from the utility model, and all these modification ought to be included in scope of the present utility model.

The cross reference of related application

The claimed application number submitted on September 17th, 2013 of the utility model is rights and interests and the priority of Malaysia's application of No.PI2013701673.Whole disclosures of above-mentioned application will be incorporated herein with for referencial use.

Claims

1. there is an antenna system for low passive intermodulation, it is characterized in that, described in there is low passive intermodulation antenna system comprise:

Ground plane;

First antenna and the second antenna;

Be arranged in the first isolator between described first antenna and described second antenna; And

From outward extending second isolator of described ground plane;

Thus described antenna system is configured to operate with low passive intermodulation.

2. the antenna system with low passive intermodulation according to claim 1, is characterized in that, described ground plane, described isolator and described first antenna and described second antenna are made by nonferromagnetic material; And/or

Described antenna system does not comprise any ferromagnetic material or ferromagnetic parts.

3. the antenna system with low passive intermodulation according to claim 1 and 2, it is characterized in that, described antenna system can operate to about 960 megahertzes and/or from about 1710 megahertzes to the carrier wave of about 2700 megahertzes with the passive intermodulation lower than-150 decibels from about 698 megahertzes relative to frequency.

4. the antenna system with low passive intermodulation according to claim 1 and 2, is characterized in that, this antenna system with low passive intermodulation comprises further:

First connector and the second connector, described first connector and the second connector all have at least one and are electrically connected at least one central contact portion of described first antenna or described second antenna accordingly and are electrically connected to the external contacts of described ground plane; And

First electrical insulator and the second electrical insulator, described first electrical insulator and the second electrical insulator be respectively positioned described first connector and described ground plane and between described second connector and described ground plane to reduce described first connector and the electrical-contact area between the second connector and described ground plane, thus reduce passive intermodulation;

Wherein, described ground plane and described first electrical insulator and the second electrical insulator comprise the opening run through wherein, with make the described central contact portion of described first connector and the second connector and described external contacts through and be electrically connected to described first antenna and the second antenna and be connected to described ground plane in the opposition side of described ground plane accordingly.

5. the antenna system with low passive intermodulation according to claim 1 and 2, it is characterized in that, described ground plane comprises the features be integrally formed, the features be integrally formed described in cable braid over braid is soldered to, thus described in the features that is integrally formed be configured for the direct electrical contact surface reduced between described cable braid over braid and described ground plane.

6. the antenna system with low passive intermodulation according to claim 5, it is characterized in that, the features be integrally formed described in described ground plane comprises first pair of fin and second pair of fin, and described first pair of fin and second pair of fin are stamped and bend with acute angle relative to described ground plane from described ground plane.

7. the antenna system with low passive intermodulation according to claim 1 and 2, is characterized in that, described ground plane and/or pedestal comprise the features be integrally formed, and is substantially perpendicular to described ground plane for being remained by described first isolator.

8. the antenna system with low passive intermodulation according to claim 7, it is characterized in that, the described features be integrally formed comprises through opening from the outwardly multiple parts of described pedestal, and wherein said multiple partial cooperative is to remain on described first isolator between described multiple part by friction.

9. the antenna system with low passive intermodulation according to claim 7, it is characterized in that, the described features be integrally formed comprises and being stamped and the first fin being substantially perpendicular to described ground plane and bending and the second fin from described ground plane, described first isolator comprises the upright wall type isolator with the first contrary side and the second side, described upright wall type isolator is located relative to described first fin and the second fin, make described first fin along described first side of described upright wall type isolator and described second fin along described second side of described upright wall type isolator, thus described first fin and the cooperation of the second fin are to remain on described upright wall type isolator between this first fin and second fin by friction.

10. the antenna system with low passive intermodulation according to claim 1 and 2, it is characterized in that, described second isolator comprises the extension being roughly T-shaped roughly between described first antenna and the second antenna of described ground plane, thus described in be roughly T-shaped extension increase the electric current of described ground plane, which increase the isolation when low frequency.

11. antenna systems with low passive intermodulation according to claim 1 and 2, it is characterized in that, this antenna system with low passive intermodulation comprises further and is arranged in described ground plane and the dielectric adhesive tape between described first antenna and the second antenna, thus stops described first antenna and the direct electrical contact between the second antenna and described ground plane.

12. antenna systems with low passive intermodulation according to claim 1 and 2, it is characterized in that, this antenna system with low passive intermodulation comprises first parasitic antenna adjacent with the second antenna with corresponding described first antenna and the second parasitic antenna further to increase bandwidth, and wherein said first parasitic antenna and the second parasitic antenna do not carry out direct electrical contact with described first antenna and the second antenna.

13. antenna systems with low passive intermodulation according to claim 1 and 2, it is characterized in that, described antenna system can at least from about 698 megahertzes to the first frequency scope of about 960 megahertzes and from about 1710 megahertzes to the second frequency range of operation of about 2700 megahertzes; Or

Described antenna system can operating to the frequency range of about 2700 megahertzes from about 698 megahertzes.