CN100495816C - Optimum utilization of slot gap in PIFA design - Google Patents
Optimum utilization of slot gap in PIFA design Download PDFInfo
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- CN100495816C CN100495816C CNB2003801027942A CN200380102794A CN100495816C CN 100495816 C CN100495816 C CN 100495816C CN B2003801027942 A CNB2003801027942 A CN B2003801027942A CN 200380102794 A CN200380102794 A CN 200380102794A CN 100495816 C CN100495816 C CN 100495816C
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Abstract
Operating parameters of a planar antenna are controlled by providing a planar metal radiating element having an edge, by providing a slot within the radiating element, the slot having side walls, an open slot-end that lies on the edge of the radiating element, and a closed slot-end the lies within the radiating element, and by providing a thin, line-like, and metal segment, at least a portion of which is coplanar with the radiating element and that extends from the open slot-end to the closed slot-end without physically engaging the slot's side walls. The metal segment can be connected to the antenna's ground plane to thereby form a parasitic element, or the metal segment can be connected to the radiating element to thereby form an extension of the radiating element.
Description
The cross reference of related application
This non-temporary patent application case requires the U.S. Provisional Patent Application case the 60/424th that is entitled as " OPTIMUMUTILIZATION OF SLOT GAP IN PIFA DESIGN " of submission on November 8th, 2002, No. 850 priority, this case is incorporated herein by reference.The non-temporary patent application case the 10/135th of the U.S. that is entitled as " SINGLE FEED TRI-BAND PIFA WITH PARASITIC ELEMENT " that on April 29th, 2002 submitted to, No. 312, in the radiated element of PIFA and the interior zone between the ground plane, provide a parasitic antenna, this parasitic antenna is connected with described ground plane, and this case is incorporated herein by reference.
Technical field
The application's case relates to a kind of reception/transmission radio wave antenna, the antenna that for example is used for radio communication, and more specifically, relate to a kind of as flat plane antenna microstrip antenna and planar inverted F-shape antenna (PIFA), that in its reception/transmission radiated element (radiated element hereinafter referred to as), have a groove.
Background technology
The antenna of hand-hold type portable device (for example beep-pager, portable telephone and cellular phone) must have small size, light weight and physical size closely.Usually need flat embedding formula or built-in inside antenna, and PIFA is especially attractive for such application.For many devices, PIFA is preferred a selection as the inside antenna in the cellular communications applications.
Called after PIFA is that the PIFA with air dielectric is similar to prone alphabetical F because from end view.(consult, for example the 10.7th of the publication of R.Garg, P.Bhartia, I.Bahl and A.Ittipiboon " MICROSTRIP ANTENNA DESIGN HANDBOOK " the save, copyright 2001, Artech House, Inc.).
Progress in PIFA technology and the design develops towards the direction of miniaturization with the multiband performance that strengthens single feedback PIFA.The multiband executive capability of single feedback PIFA has also developed into and has comprised two honeycomb fashions and two non-cellular applications simultaneously.
The PIFA design can comprise the structure of groove in the radiated element of PIFA.For example, United States Patent (USP) the 6th, 573, a kind of multi-band PIFA with a reflector is provided for No. 869, wherein form a helicla flute and rely on zero-signal (multiple frequencydependent null) to produce multifrequency in the electric field patterns of antenna is distributed, this patent is incorporated herein by reference.
Relevant design parameter is depended in the selection of position, profile and the length of the groove in the radiated element of PIFA, and preferably has a more than groove sometimes in the radiated element of PIFA.
The resonance frequency that uses groove to come the radiated element of a single band PIFA of physical separation to be used for Multiband-operation and provide a groove to reduce radiated element as the reactive load instrument becomes two important function roles of PIFA radiated element.In addition, can select the position of groove and the polarization characteristic of the last resonance bands that profile is controlled multi-band PIFA.
Introduce the ill effect that a groove has the effective surface area that reduces radiated element in the PIFA radiated element, it causes the effect of PIFA degradation aspect gain and bandwidth again.
Except having a groove, the radiated element of PIFA also can be associated with the capacity load element, these capacity load elements are generally in the metal segments of the bending at radiated element edge or the form of sheet, and these sections are towards ground plane extension downwards and do not contact ground plane.Yet capacity load has negative effect aspect the bandwidth of PIFA and the gain.For example, United States Patent (USP) the 5th, 764 provides a kind of capacity load PIFA No. 190, and this patent is incorporated herein by reference.
Usually utilize load slot and capacity load to realize desired resonance, and can not increase the physical size of PIFA.
Although above the groove of being mentioned has shortcoming at the PIFA aspect of performance, the structure that has groove in the radiated element of PIFA may be necessary, to realize the multiband performance and desired resonance is provided.
Equally, consider that capacity load can generally need for the strictness constraint that is used in the physical size aspect of placing inside antenna in the wireless device in the PIFA design.
As an example that in the emitting structural of PIFA, uses zigzag pattern, United States Patent (USP) the 6th, 380, a kind of emitting structural that is used for little band PIFA is provided for No. 895, wherein first sticking patch (patch) s is connected to second sticking patch by the mode of zigzag pattern, and this patent is incorporated herein by reference.This first sticking patch comprises the member that is used for this emitting structural of RF signal feed-in, and this zigzag pattern serves as two inductions connections between the sticking patch.
Summary of the invention
The present invention is used for the gap of profile of groove that optimum utilization forms the radiated element of PIFA, with the operating parameter of control PIFA.Be used for PIFA although the present invention will be described, the present invention is common to the flat plane antenna that has groove in its radiated element.
In prior art PIFA, the physics that the groove district of radiated element is independent of any part of PIFA radiated element exists, for example as shown in Figure 9, wherein the general plane of PIFA and rectangular-shaped metal radiated element 90 (showing with vertical view) comprising: a non-transmitting side 91; One transmitting side 97; One roughly wide L shape groove 92, it has one and is approximately perpendicular to non-transmitting side 91 and the short vertical section 93 that extends and be roughly parallel to non-transmitting side 91 and the long horizontal segment 94 of extension; Short circuit post on non-transmitting side 91 (shorting post) or zone 95, extend downwards on its plane from radiated element 90, radiated element 91 is electrically connected to the metal ground plane (not shown) of PIFA 90; With a feeder pillar or a zone 96 on non-transmitting side 91, it connects radiated element 90 with reception/transmission RF signal.The length of L shape groove 92 are vertical channel sections 93 with the length of level trough section 94 and.
According to the present invention, PIFA comprises the metal segments in the groove that is provided in the PIFA metal radiated element.According to the present invention, this metal segments can be connected with radiated element, and then forms the extension of radiated element, and perhaps this metal segments can be connected with the ground plane of PIFA, and then forms the shorted parasitic element of PIFA.
Structure of the present invention and layout are used for effectively utilizing the gap area that is provided by groove, and it is equivalent to the effective or actual physical size that has increased the PIFA radiated element.The actual increase of this physical size helps reducing being generally and realizes resonating required capacity load.The minimizing of capacity load has also improved the bandwidth of PIFA or gain or two aspects all improvement.
The profile of the metal segments by selecting to extend to the radiated element in the radiated element groove advisably just might thoroughly overcome the capacity load demand, even limit in strictness under the situation of linear dimension of PIFA.
The viewpoint of a metal segments is provided in the groove according to the radiated element at PIFA of the present invention, but an end physical connection of this metal segments in the groove to this radiated element, but or an end physical connection of this metal segments in the groove to the ground plane of PIFA.
The explanation of No. the 10/135th, 312, above-mentioned U.S. patent application case produces unique resonant belt in radiated element by shorted parasitic element being placed on PIFA and the space between the ground plane.
Provide a kind of unique resonant belt at structure of the present invention with in arranging, wherein radiated element and shorted parasitic element are in the same plane.(referring to Fig. 8) in the present invention, shorted parasitic element is positioned at the groove district of radiated element, and shorted parasitic element is not electrically connected to radiated element, and this coplane of radiated element and shorted parasitic element is placed with and is beneficial to the manufacturing of simplifying single feedback multi-band PIFA
Description of drawings
Fig. 1 is the vertical view of the first embodiment of the present invention, wherein the plane metal radiated element of PIFA comprises a roughly wide L shape groove, it has an openend on the non-transmitting side that is positioned at radiated element, the short vertical channel section of this radiated element or leg extend and its long level trough section or leg complications during being roughly parallel to the path of non-transmitting side from the non-transmitting side approximate vertical of radiated element, and the tortuous and roughly wide metal extension and the radiated element coplane of radiated element wherein, enter the openend of L shape groove, in L shape groove, roughly be placed in the middle, and roughly extend along the length of L shape groove.
Fig. 2 is the vertical view of the second embodiment of the present invention, and it is similar to Fig. 1 a bit.Wherein the plane metal radiated element of PIFA comprises that one is roughly L shape and wide groove, its openend is positioned on the non-transmitting side of radiated element, wherein the horizontal segment of groove is linear, the wherein tortuous metal extension of radiated element and this radiated element coplane, wherein the metal extension of this radiated element enters the openend of L shape groove, is roughly placed in the middle in L shape groove and roughly extends along the length of L shape groove.
Fig. 3 is the vertical view of the third embodiment of the present invention, it is similar to Fig. 1 and Fig. 2 a bit, wherein the plane metal radiated element of PIFA comprises that one is roughly L shape and wide groove, its openend is positioned on the non-transmitting side of radiated element, wherein enter the openend of L shape groove with the metal extension of the radiated element of radiated element coplane, roughly extend, and then revolve three-sixth turn and back extend with length along the horizontal segment of L shape groove along the length of L shape groove.
Fig. 4 is the vertical view of the fourth embodiment of the present invention, wherein the plane metal radiated element of PIFA comprises a groove that is roughly the L shape, its horizontal segment is roughly parallel to the non-transmitting side of radiated element and extends, its vertical section is that openend is positioned on the side of radiated element, and wherein the metal extension of the complications of radiated element enters the openend of L shape groove, roughly placed in the middle in L shape groove, and roughly extend along the length of L shape groove.
Fig. 5 is the vertical view of the fifth embodiment of the present invention, and it is similar to Fig. 4 a bit, and the horizontal segment that wherein is roughly the groove of L shape comprises two roughly wide tortuous extensions of radiated element, these two extensions haply five equilibrium the horizontal segment of this L shape groove.
Fig. 6 is the vertical view of the sixth embodiment of the present invention, it is similar to Fig. 5, relative short metal feeder pillar on long relatively short circuit metal post on the radiated element side that is wherein provided and the radiated element transmitting side is as the coplanar portions of radiated element, this figure has also shown that with dotted line how the metal ground plane (not shown) towards PIFA is bent downwardly roughly 90 degree from the plane of radiated element for short circuit post and feeder pillar, the length of short circuit post is across the distance between radiated element and the ground plane, with so that the side of radiated element is electrically connected to ground plane.
Fig. 7 is the vertical view of the seventh embodiment of the present invention, wherein the planar transmit element of PIFA comprises two substantial linear grooves, described groove extends from the non-transmitting side approximate vertical of radiated element, and the openend of two grooves along non-transmitting side apart from one another by coming, wherein first groove comprises the tortuous extension of radiated element, this complications extension and radiated element coplane and roughly placed in the middle in this first groove, and wherein second groove comprises the linear extension portion of radiated element, this linear extension portion and radiated element coplane and roughly placed in the middle in this second groove.
Fig. 8 is the vertical view of the eighth embodiment of the present invention, and it is similar to Fig. 1 a bit, and difference is to be electrically connected to the PIFA metal ground plane along the coplane metal pattern of L shape groove crankle, and then forms shorted parasitic element.
Fig. 9 is the vertical view of the prior art radiated element of PIFA, the groove that wherein is roughly the L shape is formed in the radiated element, make the vertical section of groove be approximately perpendicular to the non-transmitting side of radiated element and extend, and make the horizontal segment of groove be roughly parallel to the non-transmitting side of radiated element and extend.
Figure 10 is the end view of prior art PIFA, and this view has shown the shape of falling F of PIFA, and this figure shown the type that provides metal ground plane in PIFA, and described PI FA constructs and arranges according to the present invention.
Embodiment
Fig. 1 illustrates the first embodiment of the present invention.
The vertical view the same with the other embodiments of the invention that will describe, that it has shown radiated element should be appreciated that, described radiated element spatially is associated with ground plane, and is shown in Figure 10 similar in prior art.For simplicity, there is not to show the ground plane that is associated with embodiments of the invention among Fig. 1-8.
Fig. 1 is the vertical view of the metal radiated element 10 that is roughly smooth or plane of the PIFA that constructs and arrange according to the present invention, radiated element 10 comprises a zigzag path groove 11 that is roughly the L shape, the openend 12 of L shape groove 11 is positioned on the non-transmitting side 13 of radiated element, that is to say, the limit of radiated element 10 is contained the short circuit post or the shorting region 15 that extend downwards, and its bottom is electrically connected to the metal ground plane (not shown) of PIFA.In Fig. 1, feeder pillar or feed area 14 also are positioned on the non-transmitting side 13 of radiated element 10.
The principal length of L shape groove 11 is roughly wide, shown in numeral 16.The vertical extent of L shape groove 11 joint 17 is linear and is approximately perpendicular to non-transmitting side 13 and extends.The horizontal-extending section 18 of L shape groove 11 is advanced along the zigzag path that comprises three vertical extension members 19,20 and 21.It should be noted that at three vertical extension members (19,20,21) and locate that L shape groove 11 has bigger vertical width, shown in numeral 38.
The zigzag path of L shape groove 11 provides a load effect that reduces the resonance frequency of radiated element 10, and this can realize under the situation of the physical size that does not increase the PIFA that comprises radiated element 10.
As shown in Figure 1, in L shape groove 11, provide the tortuous metal segments 22 of radiated element 10, and only section 22 end 23 is electrically connected to radiated element 11 near openend 12 places of L shape groove 11 or its.End 23 these tortuous metal segments 22 that are connected to radiated element 11 roughly are obedient to or corresponding to the zigzag path of L shape groove 11.
More specifically, form metal segments 22, the adjacent wall distance of substantially equal spacing of these two parts and this L shape groove 11 by the first vertical extent part 24 and the second horizontal-extending part 25.
The the 3rd, the 4th and the 5th part 26,27 of section 22 and 28 forms the vertical extent part of section 22, and it extends up in the vertical section 19 of L shape groove 11.This vertical extent part distance roughly the same at interval of section 22 with the adjacent wall of vertical section 19.
The distance that horizontal-extending the 6th part 29 of metal segments 22 is also roughly the same at interval with the adjacent wall of L shape groove 11.
The the 7th, the 8th and the Session 9 30,31 of metal segments 22 and 32 forms the vertical extent part of section 22, and it extends up in the vertical section 20 of L shape groove 11.This vertical extent part distance roughly the same at interval of section 22 with the adjacent wall of vertical extent joint 20.
The distance that horizontal-extending the tenth part 33 of section 22 is also roughly the same at interval with the adjacent wall of L shape groove 11.
The tenth a part of 34 approximate vertical of metal segments 22 extend in the vertical section 21 of L shape groove 11, and also roughly the same at interval with the adjacent wall of vertical section 21 distance of this part of section 22.
The zigzag path that is positioned at the metal segments 22 of L shape groove 11 also provides the effect of linearity (length and the width) size that actual increase contains the PIFA of radiated element 10.
This structure of the present invention and arrange to rely on extends to part of radiated element 10 or section 22 in the L shape groove 11 and help to design the PIFA that resonates in the AMPS frequency band.For example, the width 35 of this radiated element 10 is that about 33mm and length 36 are about 13mm, and the height of PIFA is about 4.5mm (referring to the size 37 of Figure 10), and the width of the ground plane of PIFA is that about 35mm and length are about 75mm.
Semi-perimeter with this type of AMPS frequency band PIFA of above-mentioned size only is about 46mm, in contrast be that the semi-perimeter of conventional AMPS frequency band PIFA is about 87.31mm, the radiated element of conventional PIFA does not contain groove mentioned above and metal segments and capacity load element.
That is to say, use the present invention just can obtain integral body big or small aspect the PIFA of remarkable miniaturization.
Revised the foregoing description of Fig. 1 in Fig. 2, the horizontal section 40 of its L shape groove 41 is linear, that is to say that it has not had zigzag path.Yet the metal segments of the metal radiated element 43 that extends along the length of the horizontal section 40 of L shape groove 41 42 is advanced along zigzag path, and this class of paths is similar to the above-mentioned path of the metal segments 22 shown in Fig. 1.
More specifically, in Fig. 2, metal segments 42 comprises the non-transmitting side 13 that is approximately perpendicular to radiated element 43 and the first 44 of extending, the second portion 45 that is roughly parallel to non-transmitting side 13 and extends, the third part 46 that is approximately perpendicular to non-transmitting side 13 and extends, the 4th part 47 that is roughly parallel to non-transmitting side 13 and extends, the 5th part 48 that is approximately perpendicular to non-transmitting side 13 and extends, the 6th part 49 that is roughly parallel to non-transmitting side 13 and extends, the 7th part 50 that is approximately perpendicular to non-transmitting side 13 and extends, the 8th part 51 that is roughly parallel to non-transmitting side 13 and extends is approximately perpendicular to non-transmitting side 13 and the Session 9 52 that extends and be roughly parallel to non-transmitting side 13 and the tenth part 53 of extending.
Embodiments of the invention shown in Fig. 3 are different from the embodiment of Fig. 2 mentioned above, and different is that the metal segments that is arranged in the L shape groove 41 of radiated element 61 is advanced along the zigzag path of the type of revising.By provide longer total linear length to remedy for metal segments above with respect to Fig. 1 and the described shortages of changeing zigzag path of Fig. 2, as shown in Figure 3 more.
More specifically, comprise the first 62 that is approximately perpendicular to non-transmitting side 13 and extends with the metal segments of radiated element 61 coplanes, be roughly parallel to non-transmitting side 13 and the second portion 63 that extends along the roughly whole length of groove horizontal segment 66, be approximately perpendicular to non-transmitting side 13 and the 3rd turn fractions 64 of extending and the 4th part 65 that is roughly parallel to non-transmitting side 13 and extends along the roughly whole length of the horizontal segment 66 of groove.
Fig. 4 provides another embodiment of the present invention, and wherein the feeder pillar 14 of metal radiated element and short circuit post 15 are in mutually orthogonal configuration relation.That is to say that feeder pillar 14 is positioned on the transmitting side 113 of radiated element 72, and short circuit post 15 is positioned on the side (non-transmitting side) 73 of radiated element 72.
The L shape groove 71 of Fig. 4 roughly is similar to the L shape groove 41 of Fig. 2, and just the openend 70 of groove is positioned on the narrow limit of radiated element 72.
As the above embodiment of the present invention, the metal segments 74 that is positioned at L shape groove 71 is connected near the openend 70 of L shape groove 71 of radiated element 72 or its.
Described with respect to Fig. 2 as mentioned, metal segments 74 and radiated element 72 coplanes and metal segments 74 are along advance in path row along the horizontal segment of the groove that is roughly the L shape 71 in the radiated element 72 is tortuous
In the process of design AMPS frequency band PIFA, used the orthogonal configuration of feeder pillar 14 and short circuit post 15, and the openend 70 of placing L shape groove 71 along the narrow limit of radiated element 72, described PIFA at wide about 35mm, be about the radiated element that has wide about 33mm above the ground plane of 75mm, is about 13mm, the height of this PIFA is about 4.5mm.
Among the of the present invention previous embodiment shown in Fig. 1-4, in the groove district of the metal radiated element of PIFA, provide the single metal section, and this metal segments forms the extension of radiated element.
Fig. 5 provides one embodiment of the present of invention, wherein provides two independently metal segments 78 and 79 in the groove 71 of the roughly L shape in the radiated element 72 that is formed at PIFA.These two metal segments 78 and 79 are connected on the opposite side 80 and 81 of horizontal segment of L shape groove 71 of radiated element 72.
Thus, in the groove 71 two independently metal segments 78 and 79 structure form two extensions of radiated element 72, for the design of PIFA provides the extra degree of freedom.Two metal segments 78 and 79 aggregate level length separately shows in the resonance frequency process of control PIFA reverse effect is provided.
Utilize the embodiment of Fig. 5 to construct wide about 33mm, be about the AMPS frequency band PIFA of 13mm and Gao Yue 4.5mm, the wide about 35mm of its metal ground plane is about 75mm.This PIFA does not need the capacity load element, and this is not hinting again need be bent downwardly radiated element 72 along some limit towards ground plane.
The radiated element 72 of PIFA as shown in Figure 5 and the compound composition of its feeder pillar 14 and short circuit post 15 have been shown among Fig. 6, wherein dotted line 82 and 83 shows feeder pillar 14 and short circuit post 15 reclinate positions, make the end 84 of feeder pillar 14 be positioned at the top of the ground plane of PIFA, and the end 85 of short circuit post 15 mesh and is electrically connected with ground plane physics.
As other embodiments of the invention, compound composition shown in Fig. 6 it is desirable to by using twice ejection formation (two shot molding) or metal plated plastic techniques to form, and this compound composition also can be formed on the bent plate of the sort of type that is generally used for the shaped form antenna.
PIFA design implementation example of the present invention shown in Fig. 1-6 is included in the single L shape groove of the interior use of radiated element of PIFA.In single feedback, double frequency-band PIFA, the shortcoming that this single L shape groove is arranged is can not or to be difficult to realize the independent tuning control of low and high resonance bands
Embodiments of the invention as shown in Figure 7, shown the configuration of the radiated element 100 of PIFA, wherein two linearities or straight groove 101 and 102 extends perpendicular to the non-transmitting side 103 of radiated element, this non-transmitting side also contains a short circuit post 15 and a feeder pillar 14, and this embodiment of the present invention provides the advantage of the relatively independent control aspect the low and high resonance bands of tuning single feedback PIFA.
Two independently the length of groove 101,102 and this two individual slots only provide tuning effect along the position of non-transmitting side 103 to a specific resonance bands, and other resonance bands is influenced hardly.
The above-mentioned invention viewpoint that tortuous metal radiated element section 104 is provided in linear groove 101, linear metal radiated element section 105 is provided in linear groove 102 and makes these two metal radiated element sections serve as the extension of radiated element 100 also may extend in the double frequency-band or multi-band PIFA design that has more than one groove in radiated element.
Single feedback multi-band PIFA of Fig. 7 provides all the novel and special character among Fig. 1 of the present invention-6 embodiment, and in addition, the PIFA embodiment of Fig. 7 is provided at hanging down and the relatively independent desired feature of control in high frequency band aspect of tuning PIFA by position and the size of selecting groove 101 and 102.
The metal radiated element section 104 and 105 profile and the length that are formed in groove 101 independently and 102 are only influential to resonance bands separately.
Section 104 and 105 paths of being obedient in two grooves 101 and 102 can be similarly or not similar.That is to say that the path of the metal segments of two grooves 101,102 in separately can be linear or tortuous, or described path can be the combination of linear and tortuous type.
In addition, in Fig. 7, shown two grooves 101 and 102 openend 106 and 107 are to be positioned on the non-transmitting side 103 of radiated element 100 of PIFA.Yet, this is not done requirement.That is to say, two grooves can be provided, their openend is to be positioned on the relative edge of radiated element 100 and parallel edges 103 and 109.
In addition, the embodiments of the invention shown in Fig. 7 can comprise a modified form, and wherein available such as two grooves L shape groove and a straight trough or two L shape grooves make up and replace two straight troughs 101 and 102.
In the embodiments of the invention shown in Fig. 8, shown the metal radiated element 110 of single feedback three frequency bands or multi-band PIFA.
In Fig. 8, the position of the L shape groove 111 of the size of the position of the size of radiated element 110, feeder pillar 14, the position of short circuit post 15, PIFA metal ground plane, complications and the height (being the distance between radiated element 110 and the ground plane) of size and PIFA have determined the double resonance frequency of PIFA.
Also can realize other resonance frequency of the PIFA of Fig. 8 by the metal segments 112 that in the L of complications shape groove 111, forms complications.In this embodiment of the present invention, metal segments 112 links to each other with the ground plane of PIFA, and then becomes shorted parasitic element.
The length of shorted parasitic element 112 can be conditioned and be used for realizing that desired other has the resonance bands (for example GPS or bluetooth) of more practical value.
In the roughly L of double frequency-band PIFA shape groove 111, form shorted parasitic element 112 and can detune the previous resonance characteristics of PIFA.Can need again optimized radiated element 110 to recover the double resonance characteristic of the previous PIFA that realizes.Usually, can guarantee a kind of loop that designs repeatedly, it is included in the alternate turns of tuning radiated element 110 and shorted parasitic element 112 aspects, with desired double resonance among the realization PIFA, and has kept other the required resonance that is provided by parasitic antenna 112.
In describing process of the present invention, when the extension with radiated element is placed in the groove district of radiated element, this extension and radiated element coplane have been supposed.This coplanarity provides the desired advantage of making radiated element relatively simply.
Yet, may not request this coplanarity and implement that radiated element extended to the viewpoint in the groove district of radiated element or independent shorted parasitic element is placed viewpoint in the groove district of radiated element
Under so general situation, only need to make one section of extension of radiated element or a part to extend in the groove district or pass the groove district with the radiated element coplane, and the remainder of this extension may extend in the ground plane and the free space between the radiated element of flat plane antenna (for example PIFA or microstrip antenna), for example, consult the radiated element that exists among Figure 10 and the air dielectric space between the ground plane.The area of implementing this general design and only need to make the groove district helps the co planar segment of the extension of radiated element is extended in the space that is present between this radiated element and this ground plane.Describe purpose of the present invention in line with simple and clear, and consider and avoid repetition, another embodiment of the present invention is repeated no more, wherein comprise a part in the space that is being present between radiated element and the ground plane at the hardware between the groove of radiated element.
Although above the present invention has been made detailed description, these describe not that desire limits spirit of the present invention and category in detail.
Claims (37)
1. antenna, it comprises:
One ground plane;
One radiated element (10; 43; 61; 72), its interval is above described ground plane, and described radiated element comprises that one is roughly linear limit (13,73);
One is roughly the groove (11 of L shape; 41; 71; 101), its sidewall is to be formed in the described radiated element, and described groove has an openend (12 that is positioned on the described limit; 70) and have a closing end (21) that is positioned at described radiated element, described groove has a second portion that is approximately perpendicular to described limit and extends and the first and of extending is roughly parallel to described limit; With
One short circuit post (15), it is connected to described ground plane with described radiated element;
It is characterized in that,
The extension (22 of one described radiated element; 42; 62-65; 74), it is positioned at described groove and does not contact with described sidewall physics, described extension have one be connected with described radiated element and roughly be positioned at described groove described openend near first end (23) and have near second end (34 that roughly is positioned at the described closing end of described groove; 53; 64), wherein said extension comprises that one extends through the first (24 of the described first of described groove; 44; 62; 74), and wherein said extension comprise that one extends through the second portion (26-33 of the described second portion of described groove; 45-52; 63; 65).
2. antenna according to claim 1, the part of wherein said extension are in the space between described radiated element and described ground plane.
3. antenna according to claim 1, described second end of wherein said extension are in the space between described radiated element and described ground plane.
4. antenna according to claim 1, wherein said limit are transmitting side of described radiated element.
5. antenna according to claim 1, wherein said limit are non-transmitting side of described radiated element.
6. antenna according to claim 5, wherein said short circuit post are roughly to be positioned on the described non-transmitting side of described radiated element.
7. antenna according to claim 6, it comprises:
One is positioned at the feeder pillar on the non-transmitting side.
8. antenna according to claim 1, wherein said limit are transmitting side of described radiated element and comprise that one is positioned at the feeder pillar on the described transmitting side.
9. antenna according to claim 1, the described second portion of wherein said extension also extend in the space between described radiated element and the described ground plane.
10. antenna according to claim 1, the path that the described second portion of wherein said groove extends with a limit that is roughly parallel to described substantial linear and complications, and the described second portion of wherein said extension is roughly parallel to the path of limit extension of described substantial linear and bending with one.
11. antenna according to claim 10, the described second portion of wherein said extension also extend in the space between described radiated element and the described ground plane.
12. antenna according to claim 1, the described second portion of wherein said groove is one to be roughly parallel to the limit of described substantial linear and the linear segment that extends, and the described second portion of wherein said extension comprises that the turn fractions and that a first, that extends through the described second portion of described groove in a direction roughly is arranged in the described closing end of described groove extends through the third part of the described second portion of described groove in a second direction.
13. antenna according to claim 1, wherein said limit are non-transmitting side of described radiated element, described antenna comprises:
One is positioned at the transmitting side on the described radiated element;
One is positioned at the feeder pillar on the described transmitting side;
One is positioned at the short circuit post on the described non-transmitting side, and it is connected to described ground plane with described radiated element.
14. antenna according to claim 13, wherein said groove comprise that one is approximately perpendicular to described non-transmitting side and the substantial linear part of extending, and wherein said extension is obedient to winding raod footpath when extending through the described linear segment of described groove.
15. an antenna, it comprises:
One ground plane;
One radiated element, it is at interval above described ground plane;
One is positioned at the non-transmitting side on the described radiated element;
One is positioned at the transmitting side on the described radiated element;
One is positioned at the feeder pillar on the described transmitting side;
One is positioned at the short circuit post on the described non-transmitting side, and it is connected to described ground plane with described radiated element;
One groove, its sidewall are to be formed in the described radiated element, and described groove has one and is positioned at the closing end that openend and on the described non-transmitting side is positioned at described radiated element;
The extension of described radiated element, it is positioned at described groove and does not contact with described sidewall physics, described extension has a first, described first connects described radiated element roughly near the described openend of described groove, roughly be positioned at one second end described first described groove length in the middle of the place; And
Described extension has a second portion, and first end of described second portion is connected to described radiated element near described second end of described first, and second end of described second portion roughly is positioned near the described closing end of described groove.
16. antenna according to claim 15, described first and second parts of wherein said extension are directly advanced along winding raod.
17. antenna according to claim 1, wherein said antenna are one to be selected from the flat plane antenna of the group that microstrip antenna and planar inverted F-shape antenna form.
18. an antenna, it comprises:
One metal ground plane;
One with the isolated metal radiated element of described ground plane, described radiated element comprises that one is roughly linear limit;
One is roughly the groove of L shape, its sidewall is to be formed in the described radiated element, described groove has one and is positioned at the openend on the described limit and has a closing end that is positioned at described radiated element, and described groove has one and is approximately perpendicular to described limit and the first and of extending is roughly parallel to described limit and the second portion that extends; With
One short circuit post, it is connected to described ground plane with described radiated element;
It is characterized in that,
One hardware that is positioned at described groove and does not contact with described sidewall physics, described hardware have one roughly be positioned at described groove described openend near first end and have near second end that roughly is positioned at the described closing end of described groove, wherein said hardware comprises that one extends through the first of the described first of described groove, and wherein said hardware comprises that one extends through the second portion of the described second portion of described groove.
19. antenna according to claim 18, wherein said hardware is connected with described ground plane.
20. antenna according to claim 19, wherein said ground plane and described radiated element are the plane institution movements of roughly extension parallel to each other, and at least a portion of wherein said hardware and described radiated element coplane roughly.
21. antenna according to claim 20, the part of wherein said hardware are in the space between described radiated element and described ground plane.
22. antenna according to claim 20, wherein said groove comprises that closing end and that a length dimension, is positioned at described radiated element is positioned at the openend on the described limit, and wherein said hardware roughly along the length complications of described groove to have an effective length size longer than the described length dimension of described groove.
23. antenna according to claim 18, wherein said hardware are to be connected to described radiated element.
24. antenna according to claim 23, wherein said ground plane and described radiated element are the plane institution movements that mutual almost parallel extends, and at least a portion of wherein said hardware and described radiated element coplane roughly.
25. antenna according to claim 24 is in the space of the part of wherein said hardware between described radiated element and described ground plane.
26. antenna according to claim 25, wherein said radiated element comprises on one side, wherein said groove comprises that closing end and that a length dimension, is positioned at described radiated element is positioned at the openend on the described limit, and wherein said hardware roughly along the described length dimension bending of described groove to have an effective length size longer than the described length dimension of described groove.
27. antenna according to claim 18, wherein said antenna are the flat plane antennas that is selected from the group of microstrip antenna and planar inverted F-shape antenna composition.
28. a flat plane antenna, it comprises:
One ground plane;
One has radiated element on one side;
One short circuit post, it is connected to described ground plane with described radiated element;
One first groove, it has sidewall, and is positioned at the closing end that openend and on the described limit is positioned at described radiated element;
One second groove, it has sidewall, and is positioned at the closing end that is positioned at described radiated element on the described limit with the described openend openend and separately of described first groove;
One first extension of described radiated element, described first extension enters described groove and roughly roughly extends to its described closing end along the length of described first groove from described openend from the described openend of described first groove, and does not contact with the described sidewall generation physics of described first groove; With
One second extension of described radiated element, described second extension enters described groove and roughly roughly extends to its described closing end along the length of described second groove from described openend from the described openend of described second groove, and does not contact with the described sidewall generation physics of described second groove.
29. antenna according to claim 28, described first extension of wherein said radiated element is selected from path linear and the tortuous group of forming along one and advances, and described second extension of wherein said radiated element is advanced along a path that is selected from linearity and the tortuous group of forming.
30. antenna according to claim 29, wherein said antenna are the groups that is selected from microstrip antenna and planar inverted F-shape antenna composition.
31. the method for the operating parameter of a control plane antenna, it may further comprise the steps:
Provide one to have the metal radiated element (10 of the general plane of (13,73) on one side; 43; 61; 72);
One groove (11 that is roughly the L shape is provided in described radiated element; 41; 71; 101);
Make described groove comprise that sidewall, is positioned at the open slot end (12 on the described limit of described radiated element; 70) and a closed slots end (21) that is positioned at described radiated element, described groove has a second portion that is approximately perpendicular to described limit and extends and the first and of extending is roughly parallel to described limit;
One short circuit post (15) is provided, and it is connected to described ground plane with described radiated element;
It is characterized in that,
One general plane metal segments is provided, it is positioned at described groove and does not contact with described sidewall physics, described metal segments have one be connected with described radiated element and roughly be positioned at described groove described openend near first end (23) and have near second end (34 that roughly is positioned at the described closing end of described groove; 53; 64), wherein said metal segments comprises that one extends through the first (24 of the described first of described groove; 44; 62; 74), and wherein said metal segments comprise that one extends through the second portion (26-33 of the described second portion of described groove; 45-52; 63; 65).
32. method according to claim 31, it may further comprise the steps:
Described metal segments is electrically connected to described radiated element.
33. method according to claim 31, it may further comprise the steps:
Near the described openend of described groove roughly position is electrically connected to described radiated element with described metal segments.
34. method according to claim 33, it may further comprise the steps:
The metal segments of described metal segments as complications is provided, and its length is greater than the length of described groove.
35. method according to claim 31, it may further comprise the steps:
One metal ground plane is provided, and itself and described radiated element are spaced apart and be roughly parallel to described radiated element; With
Described metal segments is electrically connected to described ground plane.
36. method according to claim 35, it may further comprise the steps:
The metal segments of described metal segments as complications is provided, and its length is greater than the length of described groove.
37. method according to claim 31, it may further comprise the steps:
One metal ground plane is provided, itself and described radiated element is spaced apart and roughly with described radiated element coplane;
Described metal segments is electrically connected in the group that radiated element and ground plane form one; With
From the group of microstrip antenna and planar inverted F-shape antenna composition, select described antenna.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US42485002P | 2002-11-08 | 2002-11-08 | |
| US60/424,850 | 2002-11-08 | ||
| US10/605,593 | 2003-10-10 |
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| CN1714468A CN1714468A (en) | 2005-12-28 |
| CN100495816C true CN100495816C (en) | 2009-06-03 |
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| CNB2003801027942A Expired - Fee Related CN100495816C (en) | 2002-11-08 | 2003-10-28 | Optimum utilization of slot gap in PIFA design |
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| CN107689485A (en) * | 2016-08-04 | 2018-02-13 | 泰连公司 | Radio communication device with the multiband slot antenna with parasitic antenna |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102610915B (en) * | 2011-01-25 | 2019-11-01 | 富士康(昆山)电脑接插件有限公司 | Antenna |
| JP5998743B2 (en) * | 2011-09-09 | 2016-09-28 | 富士通株式会社 | Antenna device and mobile phone |
| CN109742511B (en) * | 2018-12-14 | 2021-01-26 | 惠州Tcl移动通信有限公司 | Mobile communication terminal and antenna structure thereof |
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| CN1714468A (en) | 2005-12-28 |
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