CN1773773A - Planar inverted F-shape antenna - Google Patents
Planar inverted F-shape antenna Download PDFInfo
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- CN1773773A CN1773773A CN 200410088655 CN200410088655A CN1773773A CN 1773773 A CN1773773 A CN 1773773A CN 200410088655 CN200410088655 CN 200410088655 CN 200410088655 A CN200410088655 A CN 200410088655A CN 1773773 A CN1773773 A CN 1773773A
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Abstract
An antenna of planar reversed F type consists of radiation unit for receiving or emitting a radio signal, a short circuit unit with its one end being connected to radiation unit for supporting radiation unit, an earthing unit for connecting another end of short circuit, a feeding in region located between radiation unit and earthing unit. It features that one end of feeding in region is connected to radiation unit and another is faced to earthing unit but not connected to earthing unit.
Description
Technical field
The present invention relates to a kind of antenna, particularly relate to a kind of planar inverted F-shape antenna, it is applied to a wireless communication apparatus, and providing wireless communication apparatus quite high antenna performance, and this planar inverted F-shape antenna is made by integrated mode.
Background technology
Flourish along with the wireless telecommunications industry, the application of wireless communication technique on sci-tech product also increases day by day day by day to be popularized, and makes relevant radio communication product become more diverse.In recent years, under the prerequisite that does not reduce its usefulness, advanced towards compact target as much as possible, in the hope of satisfying more high-quality consumption demand for radio communication product.Therefore, in radio communication product, occupy the antenna that transmits with received signal, become an epochmaking research topic then.
Comprise dipole antenna (Dipole antenna), helical antenna (Helixantenna), planar inverted-F antenna (Planar inverted F antenna on the general common antenna; Be called for short the PIFA antenna) and microstrip type antenna (Microstrip antenna) or the like.Wherein, because the PIFA antenna can be in not outside promptly reach the purpose of impedance matching under the situation of coilloading, electric capacity, therefore be more widely to realize and one of the antenna that uses.
As shown in Figure 1, the PIFA antenna 100 that is provided in No. the 6795028th, United States Patent (USP) comprises: one first conductive plate 110, one second conductive plate 120, a short board 130, a feed-in plate 140 and a feed-in connector 150.Wherein, first conductive plate 110 is a main Department of Radiation.And second conductive plate 120 is a grounded part, and its length is slightly larger than the length of first conductive plate 110 and width is no more than the width of first conductive plate 110.In this, a short board 130 interconnects an end of first and second conductive plates 110,120, and its width is slightly less than the width of first and second conductive plates 110,120.In addition, feed-in plate 140 is between first and second conductive plates 110,120, and its width equates with the width of first and second conductive plates 110,120 and length is slightly less than the length of first conductive plate 110.One edge of one edge of this feed-in plate 140 and first conductive plate 110 is linked to be a line, and therefore, another edge and the short board 130 of feed-in plate 140 have a bit of distance.At last, feed-in connector 150 has a center conductor 152, and this center conductor 152 passes second conductive plate 120 and supports feed-in plate 140.Wherein, feed-in plate 140, first and second conductive plates, 110,120 threes are parallel to each other, and the direction of short board 130 and feed-in connector 150 is perpendicular to above-mentioned three 110,120,140.Thereby when antenna 100 runnings, the feed-in plate 140 and second conductive plate 120 form a capacity effect, thereby feed-in one capacitance is given first conductive plate 110.
The PIFA antenna that in No. the 6781547th, United States Patent (USP), is provided, as shown in Figure 2.This PIFA antenna 200 is formed at the upper surface of substrate 250, comprising: 252, one long and narrow hole 254, a circle hole, two radiation conductors 210,212 and a line of radiation lead 214.Wherein, the end that is not connected with radiation conductor 212 of line of radiation lead 214 has a load point 240.Have the substrate of running through and equally distributed a plurality of through hole 256 on two radiation conductors 210,212, in case of necessity, through hole 256 also can be uniformly distributed on the line of radiation lead 214.In this, the gain that this circle hole 252, long and narrow hole 254 and through hole 256 can increase the frequency range of antenna 200 effectively and improve antenna 200.In addition, substrate 250 can be a printed circuit board (PCB), and has a ground plane 220 made from electric conducting material in the lower surface of substrate 250.This ground plane 220 can be positioned at according to actual demand radiation conductor 210 and partly line of radiation lead 214 (as half of line of radiation lead 214) under.
Yet, though present Antenna Design can be under the prerequisite that does not reduce antenna performance, dwindle antenna size, but its cost of manufacture is quite high and difficult the making, therefore, still need proceed the research topic of Antenna Design, in the hope of obtaining the Antenna Design that a cost is low, making simply and still has high antenna performance.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of planar inverted F-shape antenna, can't be implemented in the problem that reduces the antenna cost of manufacture under the situation that does not reduce antenna performance in order to solve prior art.
To achieve these goals, the invention provides a kind of planar inverted F-shape antenna,, can reduce cost of manufacture effectively, can make again and make simply in order under the situation that does not reduce antenna performance.
Planar inverted F-shape antenna provided by the present invention utilizes the sheet metal of tool conduction effect to constitute each partly, this can be simply and the transmission circuit of the wireless communication apparatus firmly installed with desire link mutually.
Planar inverted F-shape antenna provided by the present invention, adopt the design of rough circle, in order under the prerequisite that does not reduce antenna performance, dwindle the size of antenna, simultaneously when area that the transmission circuit that reduces with wireless communication apparatus links mutually, still can provide quite high antenna performance to wireless communication apparatus.
Planar inverted F-shape antenna provided by the present invention can utilize a metal material one-body molded, makes manufacturing quite easy.
Planar inverted F-shape antenna provided by the present invention comprises: a Department of Radiation, a short circuit portion, a grounding parts and a feed-in district.Department of Radiation is in order to reception or launch a radio signal; One end of short circuit portion is connected to Department of Radiation, in order to support Department of Radiation; Grounding parts is connected to the other end of short circuit portion; And the feed-in district is positioned between Department of Radiation and the grounding parts, and wherein, an end in feed-in district is connected to Department of Radiation, and the other end is towards grounding parts but do not join with grounding parts.
Make in integrated mode in the Department of Radiation of this planar inverted F-shape antenna, short circuit portion, grounding parts and feed-in district.
Wherein, Department of Radiation has one first hole, and this planar inverted F-shape antenna also comprises a matching part of first hole that is arranged in Department of Radiation, and the two ends of this matching part are connected to Department of Radiation, in addition and, this first hole is greater than the matching part.
This matching part comprises: two linking parts, and an end is connected to Department of Radiation; And the portion of wriggling, its two ends connect the other end of linking part respectively.Wherein, linking part and sinuous portion are the sheet metal that a metallic conductor is made.And this linking part can be more than one metallic conductor.
In addition, this planar inverted F-shape antenna also comprises a fixed part.This fixed part is the insulation material of a column, and length is slightly larger than short circuit portion, and in order to support Department of Radiation, comprising: a main body be a column, and length approximates short circuit portion; And two Embedded Divisions, be connected to the two ends of main body.
The one the 4th and the 5th hole is arranged respectively, and two Embedded Divisions can embed respectively in the 4th and the 5th hole on Department of Radiation and grounding parts, so as more firmly with antenna arrangements on a wireless communication apparatus.In addition, this 4th lays respectively at Department of Radiation and grounding parts away from a side that is connected short circuit portion with the 5th hole.
And, the sheet metal that make by a metallic conductor in the Department of Radiation of this planar inverted F-shape antenna, short circuit portion, grounding parts and feed-in district.Wherein, Department of Radiation is two similar rough circles with grounding parts.Yet Department of Radiation and grounding parts also can be the outer geometry of rough circle.
In addition, short circuit portion has one the 3rd hole.This 3rd hole can partly be divided into two districts with short circuit, and an end in each district is connected to Department of Radiation, and the other end in each district is connected to grounding parts.
In addition, grounding parts has one second hole greater than the feed-in district in the relative position in feed-in district, so that make the feed-in district can be under the prerequisite that does not touch grounding parts and pass grounding parts.Therefore, when grounding parts was fixed on the circuit board of wireless communication apparatus, this feed-in district can directly be electrically connected on the transmission circuit of wireless communication apparatus.
Describe the present invention below in conjunction with the drawings and specific embodiments, but not as a limitation of the invention.
Description of drawings
Fig. 1 is the three-dimensional structure diagram of the PIFA antenna of prior art;
Fig. 2 is the three-dimensional structure diagram of the PIFA antenna of prior art;
Fig. 3 is the three-dimensional structure diagram of the PIFA antenna of the first embodiment of the present invention;
Fig. 4 is the three-dimensional structure diagram of the PIFA antenna of the second embodiment of the present invention;
Fig. 5 is the three-dimensional structure diagram of the PIFA antenna of the third embodiment of the present invention;
Fig. 6 is the three-dimensional structure diagram of the PIFA antenna of the fourth embodiment of the present invention;
Fig. 7 is the three-dimensional structure diagram of the PIFA antenna of the fifth embodiment of the present invention;
Fig. 8 is the three-dimensional structure diagram of the PIFA antenna of the sixth embodiment of the present invention;
Fig. 9 is the measurement data figure that the feedback of the PIFA antenna of the second embodiment of the present invention is lost;
Figure 10 is the measurement data figure of voltage standing wave ratio of the PIFA antenna of the second embodiment of the present invention;
Figure 11 be the PIFA antenna applications of the second embodiment of the present invention when 2.4GHz, the experimental data figure of the radiation field shape of x-y plane, θ (theta) polarization;
Figure 12 be the PIFA antenna applications of the second embodiment of the present invention when 2.45GHz, the experimental data figure of the radiation field shape of x-y plane, θ polarization;
Figure 13 be the PIFA antenna applications of the second embodiment of the present invention when 2.5GHz, the experimental data figure of the radiation field shape of x-y plane, θ polarization;
Figure 14 be the PIFA antenna applications of the second embodiment of the present invention when 2.4GHz, the experimental data figure of the radiation field shape of x-y plane, φ (phi) polarization;
Figure 15 be the PIFA antenna applications of the second embodiment of the present invention when 2.45GHz, the experimental data figure of the radiation field shape of x-y plane, φ polarization;
Figure 16 be the PIFA antenna applications of the second embodiment of the present invention when 2.5GHz, the experimental data figure of the radiation field shape of x-y plane, φ polarization;
Figure 17 be the PIFA antenna applications of the second embodiment of the present invention when 2.4GHz, the experimental data figure of the radiation field shape of x-z plane, θ (theta) polarization;
Figure 18 be the PIFA antenna applications of the second embodiment of the present invention when 2.45GHz, the experimental data figure of the radiation field shape of x-z plane, θ polarization;
Figure 19 be the PIFA antenna applications of the second embodiment of the present invention when 2.5GHz, the experimental data figure of the radiation field shape of x-z plane, θ polarization;
Figure 20 be the PIFA antenna applications of the second embodiment of the present invention when 2.4GHz, the experimental data figure of the radiation field shape of x-z plane, φ (phi) polarization;
Figure 21 be the PIFA antenna applications of the second embodiment of the present invention when 2.45GHz, the experimental data figure of the radiation field shape of x-z plane, φ polarization;
Figure 22 be the PIFA antenna applications of the second embodiment of the present invention when 2.5GHz, the experimental data figure of the radiation field shape of x-z plane, φ polarization;
Figure 23 be the PIFA antenna applications of the second embodiment of the present invention when 2.4GHz, the experimental data figure of the radiation field shape of y-z plane, θ (theta) polarization;
Figure 24 be the PIFA antenna applications of the second embodiment of the present invention when 2.45GHz, the experimental data figure of the radiation field shape of y-z plane, θ polarization;
Figure 25 be the PIFA antenna applications of the second embodiment of the present invention when 2.5GHz, the experimental data figure of the radiation field shape of y-z plane, θ polarization;
Figure 26 be the PIFA antenna applications of the second embodiment of the present invention when 2.4GHz, the experimental data figure of the radiation field shape of y-z plane, φ (phi) polarization;
Figure 27 be the PIFA antenna applications of the second embodiment of the present invention when 2.45GHz, the experimental data figure of the radiation field shape of y-z plane, φ polarization; And
Figure 28 be the PIFA antenna applications of the second embodiment of the present invention when 2.5GHz, the experimental data figure of the radiation field shape of y-z plane, φ polarization.
Wherein, Reference numeral:
100 PIFA antennas
110 first conductive plates
120 second conductive plates
130 short boards
140 feed-in plates
150 feed-in connectors
152 center conductors
200 PIFA antennas
210,212 radiation conductors
214 line of radiation leads
220 ground planes
240 load points
250 substrates
252 circle holes
254 long and narrow holes
256 through holes
310 Departments of Radiation
312 first holes
320 grounding parts
322 second holes
330 short circuit portions
340 feed-in districts
410 Departments of Radiation
412 first holes
420 grounding parts
422 second holes
430 short circuit portions
432 the 3rd holes
440 feed-in districts
510 Departments of Radiation
512 first holes
520 grounding parts
522 second holes
530 short circuit portions
540 feed-in districts
542 overhangs
610 Departments of Radiation
612 first holes
614 otch
616,618 symmetric shapes
620 grounding parts
622 second holes
630 short circuit portions
640 feed-in districts
710 Departments of Radiation
712 first holes
720 grounding parts
722 second holes
730 short circuit portions
740 feed-in districts
750 matching parts
752 sinuous portions
754,756 linking parts
810 Departments of Radiation
812 first holes
814 the 4th holes
820 grounding parts
822 second holes
824 the 5th holes
830 short circuit portions
840 feed-in districts
850 matching parts
860 fixed parts
862,864 Embedded Divisions
866 main bodys
Embodiment
With reference to Fig. 3, be the planar inverted F-shape antenna of first embodiment of the invention, be applied to a wireless communication apparatus, comprising: a Department of Radiation 310, a grounding parts 320, a short circuit portion 330 and a feed-in district 340.
Department of Radiation 310 is in order to receive or to launch a radio signal, in order to the signal of transmission wireless communication apparatus.
Grounding parts 320 can firmly be fixed on the radio transmitting device by welding manner or a sticker (for example: double faced adhesive tape, devil are sticking etc.).
Feed-in district 340, between Department of Radiation 310 and grounding parts 320, and an end in this feed-in district 340 is connected Department of Radiation 310, and the other end is towards grounding parts 320 but do not join with grounding parts 320, in order to transmit the signal between antenna and the wireless communication apparatus.Wherein, in the present embodiment, feed-in district 340 forms the angle of cut that is about 90 degree with Department of Radiation 310 and grounding parts 320.
Wherein, Department of Radiation 310, grounding parts 320, short circuit portion 330 and feed-in district 340 are by the made sheet metal of metallic conductor.This sheet metal can be metal materials such as nickel, copper.
And, the design that this planar inverted F-shape antenna is formed in one, just, these four portions 310,320,330,340 can utilize a sheet metal directly to tailor and form a planar inverted F-shape antenna.
Department of Radiation 310 and grounding parts 320 are two similar rough circles, and as shapes such as circle, ellipses, in addition, Department of Radiation 310 and grounding parts 320 also can be other geometry.
Feed-in district 340 is the conductor that an end is connected to an elongated rough rectangle of Department of Radiation 310, and in addition, feed-in district 340 also can be other geometry that an end is connected to Department of Radiation 310.
In addition, feed-in district 340 can directly form by Department of Radiation 310, therefore, has first hole 312 greater than feed-in district 340 on Department of Radiation 310.This first hole 312 can be a rough rectangle or is a rough circle, or even is geometry arbitrarily.
And, can on grounding parts 320, one second hole 322 be set the zone in relative feed-in district 340, form short circuit phenomenon to avoid feed-in district 340 to be connected with grounding parts 320, promptly grounding parts 320 has second hole 322 greater than feed-in district 340 in the position in relative feed-in district 340.This second hole 332 can be the hole of a similar rectangle or a similar circle hole or, or be other geometry.
Fig. 4 is the three-dimensional structure diagram of the PIFA antenna of the second embodiment of the present invention.As shown in the figure, short circuit portion 430 can have one the 3rd hole 432, so that an end of a conductor wire is passed this 3rd hole 432 and 440 electric connections of feed-in district, and the other end of conductor wire electrically connects the transmission circuit of wireless communication apparatus.When electrically connecting by conductor wire and feed-in district 440, this conductor wire can not contact with short circuit portion 430, or in the outside coating one deck of conductor wire insulator.Can adopt a coaxial cable in this conductor wire.This 3rd hole 432 is a long and narrow hole, and in addition, the 3rd hole 432 also can be other geometry.In this embodiment, this 3rd hole 432 can be separated into two districts with short circuit portion 430, i.e. an end of two sheet metals, and each district is connected to Department of Radiation, and the other end is connected to grounding parts.In addition, if on the grounding parts 420 when having one second hole 422, this 3rd hole 432 may extend to grounding parts 420, linking to each other with second hole 422, and then manufactures easily.
Fig. 5 is the three-dimensional structure diagram of the PIFA antenna of the third embodiment of the present invention.As shown in the figure, wherein Department of Radiation 510, grounding parts 520 and short circuit portion 530 are same as described above, therefore in this no longer repeat specification.With reference to Fig. 5, relatively 540 places, feed-in district have one second hole 522 greater than feed-in district 540 on grounding parts 520, with to avoid feed-in district 540 to be connected with grounding parts 520 and to form short circuit.And, when if feed-in district 540 length that are provided with are enough, grounding parts 520 can pass in this feed-in district 540 under the prerequisite that does not touch grounding parts 520, therefore, when on the circuit board that is fixed on wireless communication apparatus by grounding parts 520, this feed-in district 540 can directly be electrically connected on the transmission circuit of wireless communication apparatus.
In addition, can design feed-in district 540 little in ledge 542 width that pass grounding parts 520 than other parts, as same standing shape, so that this ledge 542 can be embedded on the transmission circuit of wireless communication apparatus easily.
With reference to Fig. 6, in the present embodiment, grounding parts 620, short circuit portion 630 and feed-in district 640 are same as described above, therefore in this no longer repeat specification.
With reference to Fig. 7, in the present embodiment, grounding parts 720, short circuit portion 730 and feed-in district 740 are same as described above, therefore in this no longer repeat specification.
In addition, Department of Radiation 710 has one first hole 712, and connects a matching part 750 in first hole 712, and wherein, this first hole 712 is greater than matching part 750.This first hole 712 can present rough circle, perhaps greater than the random geometry of matching part 750.This matching part 750 comprises two linking parts 754,756 and a sinuous portion 752.In other words, the two ends of the sinuous portion 752 of this matching part 750 connect an end of two linking parts 754,756 respectively, and the other end of this linking part 754,756 extends and be connected to the relative both sides of first hole 712.This linking part 754,756 can be more than one metallic conductor, and this metallic conductor can be a rough rectangle, and in addition, this metallic conductor also can be other geometry.And a linking part 754 can be short metallic conductor, and another linking part 756 be the metallic conductor of growing, and longer linking part 756 comprises two metallic conductors, so that matching part 750 firmly is linked on the Department of Radiation 710.In addition, a linking part 756 is connected in the position of Department of Radiation 710 relative short circuit portions 730, and 754 of another linking parts are connected in offside.
With reference to Fig. 8, in the present embodiment, Department of Radiation 810, grounding parts 820, short circuit portion 830 and feed-in district 840 are same as described above, therefore in this no longer repeat specification.
In this, planar inverted F-shape antenna also comprises a fixed part 860, is the insulation material of a column, and length is slightly larger than short circuit portion 830, in order to support Department of Radiation.This fixed part 860 comprises two Embedded Divisions 862,864 and a main body 866.Two Embedded Divisions 862,864 are connected to the two ends of main body 866, and the length of main body 866 approximates short circuit portion 830.If the 4th and the 5th hole 814,824 is set respectively at the relative position place of Department of Radiation 810 and grounding parts 820, can embed respectively in the 4th and the 5th hole 814,824 by two Embedded Divisions 862,864, with support Department of Radiation 810, and then make Department of Radiation 810 and grounding parts 820 keep a fixed range.Wherein, two Embedded Divisions 862,864 can be a kind of T type structure, to such an extent as to when embedding the 4th and the 5th hole 814,824 respectively, the top of T type structure may be stuck on the hole in order to avoid come off.And this 4th can lay respectively at Department of Radiation 810 and grounding parts 820 away from a side that is connected short circuit portion 830 with the 5th hole 814,824.In addition, this main body 866 is the cylinder of a rough circle or rough rectangle, and in addition, this main body 866 also can be the cylinder of other geometry.
Fig. 9～Figure 28 schemes for feedback loss, voltage standing wave ratio and the radiation field shape of the actual test that the present invention proposes.Fig. 9 and Figure 10 are that frequency range is at the measured feedback loss that gets of 2GHz～3GHz and the datagram of voltage standing wave ratio.Then, do the actual test of the radiation field shape under Different Plane, the different polarization respectively with frequency 2.4GHz, 2.45GHz and 2.5GHz.Figure 11 is that the PIFA antenna applications of second embodiment of the invention is when 2.4GHz, radiation field shape figure under x-y plane, θ (theta) polarization, can record peak gain is-0.05dBi (Antenna Gain Pattern (AGP, antenna gain pattern) (dBi) vs Phi at 2400MHz, surface=facesl).Figure 12 is that the PIFA antenna applications of second embodiment of the invention is when 2.45GHz, radiation field shape figure under x-y plane, θ polarization, can record peak gain and be 0.02dBi (AntennaGain Pattern (dBi) vs Phi at 2450MHz, surface=facesl).Figure 13 is that the PIFA antenna applications of second embodiment of the invention is when 2.5GHz, radiation field shape figure under x-y plane, θ polarization, can record peak gain and be 0.08dBi (Antenna Gain Pattern (dBi) vs Phi at 2500MHz, surface=facesl).Figure 14 is that the PIFA antenna applications of second embodiment of the invention is when 2.4GHz, radiation field shape figure under x-y plane, φ (phi) polarization, can record peak gain for-5.5dBi (AntennaGain Pattern (dBi) vs Phi at 2400MHz, surface=facesl).Figure 15 is that the PIFA antenna applications of second embodiment of the invention is when 2.45GHz, radiation field shape figure under x-y plane, φ polarization, can record peak gain for-6.7dBi (Antenna Gain Pattern (dBi) vs Phi at 2450MHz, surface=facesl).Figure 16 is that the PIFA antenna applications of second embodiment of the invention is when 2.5GHz, radiation field shape figure under x-y plane, φ polarization, can record peak gain for-7.8dBi (Antenna GainPattern (dBi) vs Phi at 2500MHz, surface=facesl).Figure 17 is that the PIFA antenna applications of second embodiment of the invention is when 2.4GHz, radiation field shape figure under x-z plane, θ (theta) polarization, can record peak gain and be 2.2dBi (Antenna Gain Pattern (dBi) vs Theta at 2400MHz, surface=facesl).Figure 18 is that the PIFA antenna applications of second embodiment of the invention is when 2.45GHz, radiation field shape figure under x-z plane, θ polarization, can record peak gain and be 2.4dBi (Antenna GainPattern (dBi) vs Theta at 2450MHz, surface=facesl).Figure 19 is that the PIFA antenna applications of second embodiment of the invention is when 2.5GHz, radiation field shape figure under x-z plane, θ polarization, can record peak gain and be 1.9dBi (Antenna Gain Pattern (dBi) vs Theta at 2500MHz, surface=facesl).Figure 20 is that the PIFA antenna applications of second embodiment of the invention is when 2.4GHz, radiation field shape figure under x-z plane, φ (phi) polarization, can record peak gain for-39dBi (AntennaGain Pattern (dBi) vs Theta at 2400MHz, surface=facesl).Figure 21 is that the PIFA antenna applications of second embodiment of the invention is when 2.45GHz, radiation field shape figure under x-z plane, φ polarization, can record peak gain for-38.4dBi (Antenna Gain Pattern (dBi) vs Theta at 2450MHz, surface=facesl).Figure 22 is that the PIFA antenna applications of second embodiment of the invention is when 2.5GHz, radiation field shape figure under x-z plane, φ polarization, can record peak gain for-38dBi (Antenna GainPattern (dBi) vs Theta at 2500MHz, surface=facesl).Figure 23 is that the PIFA antenna applications of second embodiment of the invention is when 2.4GHz, radiation field shape figure under y-z plane, θ (theta) polarization, can record peak gain for-0.6dBi (Antenna Gain Pattern (dBi) vs Theta at 2400MHz, surface=facesl).Figure 24 is that the PIFA antenna applications of second embodiment of the invention is when 2.45GHz, radiation field shape figure under y-z plane, θ polarization, can record peak gain and be 0.4dBi (Antenna GainPattern (dBi) vs Theta at 2450MHz, surface=facesl).Figure 25 is that the PIFA antenna applications of second embodiment of the invention is when 2.5GHz, radiation field shape figure under y-z plane, θ polarization, can record peak gain for-0.15dBi (Antenna Gain Pattern (dBi) vs Theta at 2500MHz, surface=facesl).Figure 26 is that the PIFA antenna applications of second embodiment of the invention is when 2.4GHz, radiation field shape figure under y-z plane, φ (phi) polarization, can record peak gain for-0.5dBi (AntennaGain Pattern (dBi) vs Theta at 2400MHz, surface=facesl).Figure 27 is that the PIFA antenna applications of second embodiment of the invention is when 2.45GHz, radiation field shape figure under y-z plane, φ polarization, can record peak gain for-0.65dBi (Antenna Gain Pattern (dBi) vs Theta at 2450MHz, surface=facesl).Figure 28 is PIFA antenna applications radiation field shape figure under the radiation field shape of y-z plane, φ polarization when 2.5GHz of second embodiment of the invention, can record peak gain for-0.45dBi (Antenna Gain Pattern (dBi) vs Theta at 2500MHz, surface=facesl).
Certainly; the present invention also can have other various embodiments; under the situation that does not deviate from spirit of the present invention and essence thereof; those of ordinary skill in the art work as can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the present invention.
Claims (28)
1, a kind of planar inverted F-shape antenna is characterized in that, comprising:
One Department of Radiation is in order to receive or to launch a radio signal;
One short circuit portion, an end is connected to this Department of Radiation, in order to support this Department of Radiation;
One grounding parts is connected to the other end of this short circuit portion; And
One feed-in district, between this Department of Radiation and this grounding parts, wherein, an end in this feed-in district is connected to this Department of Radiation, and the other end is towards this grounding parts but do not join with this grounding parts.
2, planar inverted F-shape antenna according to claim 1 is characterized in that, this Department of Radiation has one first hole.
3, planar inverted F-shape antenna according to claim 2 is characterized in that, also comprises:
One matching part is arranged in this first hole of this Department of Radiation, and two ends are connected to this Department of Radiation, and wherein, this first hole is greater than this matching part.
4, planar inverted F-shape antenna according to claim 3 is characterized in that, this matching part comprises:
Two linking parts, an end is connected to this Department of Radiation; And
One sinuous portion, its two ends connect the other end of this linking part respectively.
5, planar inverted F-shape antenna according to claim 4 is characterized in that, this linking part and the portion of should wriggling are the sheet metal that a metallic conductor is made.
6, planar inverted F-shape antenna according to claim 4 is characterized in that, this linking part is more than one metallic conductor.
7, planar inverted F-shape antenna according to claim 6 is characterized in that, this linking part is a geometry.
8, planar inverted F-shape antenna according to claim 7 is characterized in that, this linking part is a rough rectangle.
9, planar inverted F-shape antenna according to claim 2 is characterized in that, this first hole is a symmetrical shape.
10, planar inverted F-shape antenna according to claim 9 is characterized in that, this Department of Radiation has a kerf at the offside of this short circuit portion, uses so that this Department of Radiation has the effect of coupling.
11, planar inverted F-shape antenna according to claim 9 is characterized in that, this symmetric shape is a rough circle.
12, planar inverted F-shape antenna according to claim 1 is characterized in that, also comprises:
One fixed part is the insulation material of a column, and length is slightly larger than this short circuit portion, in order to support this Department of Radiation.
13, planar inverted F-shape antenna according to claim 12 is characterized in that, this fixed part comprises:
One main body is a cylinder, and length approximates this short circuit portion; And
Two Embedded Divisions are connected to the two ends of this main body.
14 planar inverted F-shape antennas according to claim 13 is characterized in that, this Department of Radiation and this grounding parts have the one the 4th and the 5th hole respectively, respectively in order to embed this Embedded Division.
15, planar inverted F-shape antenna according to claim 14 is characterized in that, the 4th lays respectively at this Department of Radiation and this grounding parts away from a side that is connected this short circuit portion with the 5th hole.
16, planar inverted F-shape antenna according to claim 13 is characterized in that, this main body is the cylinder of a geometry.
17, planar inverted F-shape antenna according to claim 16 is characterized in that, this main body is the cylinder of a rough circle.
18, planar inverted F-shape antenna according to claim 1 is characterized in that, the sheet metal that make by a metallic conductor in this Department of Radiation, this short circuit portion, this grounding parts and this feed-in district.
19, planar inverted F-shape antenna according to claim 1 is characterized in that, this Department of Radiation, this short circuit portion, this grounding parts and this feed-in district are respectively a geometry.
20, planar inverted F-shape antenna according to claim 19 is characterized in that, this Department of Radiation is two similar rough circles with this grounding parts.
21, planar inverted F-shape antenna according to claim 1 is characterized in that, this grounding parts has one second hole greater than this feed-in district in the position in relative this feed-in district.
22, planar inverted F-shape antenna according to claim 21 is characterized in that, this second hole can pass in this feed-in district, and surpasses the plane of this grounding parts.
23, planar inverted F-shape antenna according to claim 22 is characterized in that, the part that this feed-in district surpasses the plane of this grounding parts is less outstanding of a width.
24, planar inverted F-shape antenna according to claim 1 is characterized in that, this short circuit portion has one the 3rd hole.
25, planar inverted F-shape antenna according to claim 24 is characterized in that, the 3rd hole can partly be divided into two districts with this short circuit, and an end in each this district is connected to this Department of Radiation, and the other end in each this district is connected to this grounding parts.
26, planar inverted F-shape antenna according to claim 24 is characterized in that, the 3rd hole is a geometry.
27, planar inverted F-shape antenna according to claim 26 is characterized in that, the 3rd hole is a long and narrow hole.
28, planar inverted F-shape antenna according to claim 1 is characterized in that, make in integrated mode in this Department of Radiation, this short circuit portion, this grounding parts and this feed-in district.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410088655 CN1773773A (en) | 2004-11-10 | 2004-11-10 | Planar inverted F-shape antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410088655 CN1773773A (en) | 2004-11-10 | 2004-11-10 | Planar inverted F-shape antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1773773A true CN1773773A (en) | 2006-05-17 |
Family
ID=36760602
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410088655 Pending CN1773773A (en) | 2004-11-10 | 2004-11-10 | Planar inverted F-shape antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1773773A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104025378A (en) * | 2011-10-31 | 2014-09-03 | 松下电器产业株式会社 | Wireless terminal |
| CN105161828A (en) * | 2015-08-21 | 2015-12-16 | 沈霜 | Wireless planar inverted F antenna (PIFA) |
| CN114171891A (en) * | 2020-09-10 | 2022-03-11 | 华为技术有限公司 | Antenna for foldable electronic equipment and foldable electronic equipment |
-
2004
- 2004-11-10 CN CN 200410088655 patent/CN1773773A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104025378A (en) * | 2011-10-31 | 2014-09-03 | 松下电器产业株式会社 | Wireless terminal |
| CN104025378B (en) * | 2011-10-31 | 2016-03-30 | 松下电器产业株式会社 | Wireless terminal |
| CN105161828A (en) * | 2015-08-21 | 2015-12-16 | 沈霜 | Wireless planar inverted F antenna (PIFA) |
| CN105161828B (en) * | 2015-08-21 | 2018-07-13 | 沈霜 | A kind of wireless PIFA antennas |
| CN114171891A (en) * | 2020-09-10 | 2022-03-11 | 华为技术有限公司 | Antenna for foldable electronic equipment and foldable electronic equipment |
| CN114171891B (en) * | 2020-09-10 | 2023-11-17 | 华为技术有限公司 | Antenna for foldable electronic device and foldable electronic device |
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