CN101997172A - Nondirectional radiating panel antenna - Google Patents
Nondirectional radiating panel antenna Download PDFInfo
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- CN101997172A CN101997172A CN200910166688XA CN200910166688A CN101997172A CN 101997172 A CN101997172 A CN 101997172A CN 200910166688X A CN200910166688X A CN 200910166688XA CN 200910166688 A CN200910166688 A CN 200910166688A CN 101997172 A CN101997172 A CN 101997172A
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Abstract
The invention discloses a nondirectional radiating panel antenna, which comprises a substrate, a dipole antenna, a microstrip line set and a channel selection module, wherein the dipole antenna is arranged on the first surface of the substrate; the microstrip line set and the channel selection module are arranged on the second surface of the substrate; and a first microstrip line and a second microstrip line in the microstrip line set extend spirally along two opposite rotating tracks on a vertical projection plane so as to form a high-frequency path with the dipole antenna. The panel antenna can make the dipole antenna form a low-frequency path when the dipole antenna is conducted to the first wire and the second wire by controlling the conducting state of the channel selection module, and a plurality of channels with different operation frequencies can be generated respectively in the high-frequency path and the low-frequency path.
Description
Technical field
The invention relates to a kind of plate aerial, and particularly relevant for a kind of plate aerial of isotropic radiation.
Background technology
The field pattern of isotropic radiation (Isotropic Radiation) can avoid causing because of the weak letter point (null) in the field pattern deterioration of communication quality, so the antenna structure with this characteristic quite is applicable to the communication products of reception from from all directions wireless signal, especially hand-held product is as mobile phone, pocket computer, Portable mobile communications device or blue-tooth device etc.Fig. 1 is the structural representation of the antenna of traditional isotropic radiation.With reference to Fig. 1, the antenna 100 of isotropic radiation comprises a substrate 110, a dipole antenna 120, a spiral type radiant body 130 and another spiral type radiant body 140.Wherein, dipole antenna 120 is configured in the first surface 111 of substrate 110, and spiral type radiant body 130 and 140 then is configured in the second surface of substrate 110 respectively.For convenience of description, indicate under the situation of perspective substrate 110 spiral type radiant body 130 and 140 relative positions at the first surface 111 of substrate 110 with dotted line.
With reference to Fig. 1, spiral type radiant body 130 and 140 is symmetrical, and respectively by guide hole 151 and 152 radiant bodies 121 and 122 that electrically connect in the dipole antenna 120.At this, according to Ampere's right-handed screw rule (Ampere ' s right-hand rule) as can be known, the words of the sense of current that is indicated along label D11, spiral type radiant body 130 and 140 magnetic fields that produced (Magnetic field) will wear and penetrate first surface 111, the magnetic direction shown in label M12 and the M13 just, and then formation magnetic dipole.In addition, the polarised direction of the eelctric dipole that produced of the polarised direction of spiral type radiant body 130 and 140 magnetic dipoles that produced and dipole antenna 120 is vertical mutually.Therefore, the antenna 100 of isotropic radiation can pass through spiral type radiant body 130 and 140, dipole antenna 120, produces two quadratures and vertical polarization components, and then forms the field pattern of isotropic radiation.
Further, spiral type radiant body 130 is made of three microstrip lines, 131～133 mutual institutes that are connected in series.Wherein, the external form of microstrip line 132 presents a camber (arc) elongate, for example be an elongated transmission line (narrow transmission line), therefore has relatively the function that stops (blocking) high-frequency signal, characteristic based on microstrip line 132 impedances, its resistance value (impedance) X=ω L=(2 π f) L, so resistance value X is proportional to frequency f, when frequency heals when high, resistance value is then bigger, so high-frequency signal just is not easy by, the length L λ g/4 of microstrip line 132 wherein, λ g is guide wavelength (guided wavelength).That is to say that microstrip line 132 is equivalent to an inductance filter, wherein the low frequency signal from microstrip line 131 can be sent to microstrip line 133 by microstrip line 132, then can't pass through microstrip line 132 relatively from the high-frequency signal of microstrip line 131.Thus, the current path that radiant body 121 and microstrip line 131 serial connections form will form a high frequency path, and the current path that radiant body 121 and microstrip line 131～133 serial connections form will form a low frequency path.Therefore, but the antenna 100 of the isotropic radiation signal of receiving and transmitting double frequency band (dual band) more.
It should be noted that, the minimum widith of microstrip line 132 can be subject to the printing technology of substrate 110, so that isolate the printing process technology that the degree of high-frequency signal can be subject to the plate end, and the putting position of microstrip line 132 is under the fixing situation, to cause the antenna 100 applicable channel diversity of isotropic radiation also to be restricted, meaning promptly can't remake the selection (channel selection) of channel in high frequency and low frequency path.Moreover, central point with radiant body 121 is a benchmark, along with the increase of microstrip line 131～133 around the number of turns of central point, the extended length of microstrip line 131～133 is also elongated simultaneously, spiral type radiant body 130 can produce the effect of similar many ring spiral type (spiral) inductance, and then causing the radiation efficiency of the plate aerial 100 of isotropic radiation to descend thereupon, the volume of the plate aerial 100 of isotropic radiation also will increase thereupon in addition.
Summary of the invention
The invention provides a kind of plate aerial of isotropic radiation, microstrip line group that utilization is electrical connected and dipole antenna form a high frequency path, and select the conducting state of module by control channel, and produce high frequency path and low frequency path when causing dipole antenna conducting to the first distribution and second distribution with different operating frequency, can obtain different high workload frequency band (high-frequency band) and hang down different communication channel (channels) in the working band (low-frequency band).
The present invention proposes a kind of plate aerial of isotropic radiation, comprises a substrate, a dipole antenna, a microstrip line group and channel selection module.Wherein, dipole antenna is arranged on the first surface of substrate, and microstrip line group and channel select module then to be arranged on the second surface of substrate.Dipole antenna has one first radiant body and one second radiant body.One first microstrip line in the microstrip line group and one second microstrip line are on a vertical plane, and the bottom with first radiant body and second radiant body is a starting point respectively, extend spirally along two opposite rotational trajectories, to form a high frequency path with dipole antenna.Channel selects module to electrically connect microstrip line group, one first distribution and one second distribution.Whereby, the plate aerial of isotropic radiation can be selected the conducting state of module by control channel, form a low frequency path when causing dipole antenna conducting to the first distribution and second distribution, more can produce a plurality of communication channels therefore and respectively in its medium-high frequency path and the low frequency path with different operating frequency.
In one embodiment of this invention, above-mentioned channel selects module to comprise a plurality of first Channel Elementss and a plurality of second channels unit.Wherein, a plurality of first Channel Elementss are electrically connected between first microstrip line and first distribution.A plurality of second channels unit is electrically connected between second microstrip line and second distribution.In addition, the plate aerial of isotropic radiation is controlled the conducting state of described a plurality of first Channel Elements and described a plurality of second channels unit on a 50-50 basis, optionally to switch a channel from a plurality of channels in described high frequency path and low frequency path.
In one embodiment of this invention, above-mentioned a plurality of first Channel Elementss comprise one first switch and one first inductance respectively.Wherein, first end of first switch electrically connects first microstrip line.First end of first inductance electrically connects second end of first switch, and second end of first inductance electrically connects first distribution.
In one embodiment of this invention, above-mentioned a plurality of second channels unit comprises a second switch and one second inductance respectively.Wherein, first end of second switch electrically connects second microstrip line.First end of second inductance electrically connects second end of second switch, and second end of second inductance electrically connects second distribution.
In one embodiment of this invention, the first above-mentioned microstrip line and second microstrip line extend along two opposite rotational trajectories respectively on vertical plane from inside to outside or from outside to inside spirally, with around first radiant body and second radiant body.
Based on above-mentioned, the present invention utilizes formed magnetic dipole of microstrip line group and the formed eelctric dipole of dipole antenna to produce the field pattern of isotropic radiation.In addition, the present invention more utilizes the microstrip line group and the dipole antenna that are electrical connected to form a high frequency path, and select the conducting state of module, generation has the different operating frequency when causing dipole antenna conducting to the first distribution and second distribution a plurality of high frequencies and low frequency path by control channel.Whereby, under conventional art was compared, the plate aerial of isotropic radiation of the present invention not only had microminiaturized advantage, also helped to promote the radiation efficiency of antenna.In addition, the plate aerial of isotropic radiation of the present invention also can be selected the switching of a plurality of Channel Elementss in the module by channel, and receives or launch the signal of different channels (channel) in high and low working band (band).
For above-mentioned feature and advantage of the present invention can be become apparent, embodiment cited below particularly, and conjunction with figs. is described in detail below.
Description of drawings
Fig. 1 is the structural representation of the antenna of traditional isotropic radiation.
Figure 2 shows that structural representation according to the plate aerial of the isotropic radiation of one embodiment of the invention.
Figure 3 shows that the perspective structure schematic diagram of plate aerial on vertical plane in order to the isotropic radiation of key diagram 2.
Figure 4 shows that the perspective structure schematic diagram of plate aerial on vertical plane according to the isotropic radiation of another embodiment of the present invention.
Fig. 5 and Fig. 6 are depicted as the perspective structure schematic diagram of plate aerial on vertical plane according to the isotropic radiation of further embodiment of this invention respectively.
Fig. 7 and Fig. 8 are depicted as the perspective structure schematic diagram of plate aerial on vertical plane according to the isotropic radiation of yet another embodiment of the invention respectively.
Fig. 9 and Figure 10 are depicted as the perspective structure schematic diagram of plate aerial on vertical plane according to the isotropic radiation of yet another embodiment of the invention respectively.
The primary clustering symbol description
100: the plate aerial of isotropic radiation
110: substrate
111: the first surface of substrate 110
120: dipole antenna
130,140: the spiral type radiant body
131～133: microstrip line
151,152: guide hole
D11: the sense of current
M12, M13: magnetic direction
200: the plate aerial of isotropic radiation
210: substrate
211: the first surface of substrate 210
212: the second surface of substrate 210
220: dipole antenna
221: the first radiant bodies
222: the second radiant bodies
230: the microstrip line group
231: the first microstrip lines
232: the second microstrip lines
240: channel is selected module
241～242: first Channel Elements
243～244: the second channel unit
251: the first distributions
252: the second distributions
261: the first guide holes
262: the second guide holes
L21～L24: inductance
SW21～SW24: switch
D31: the sense of current
M32, M33: magnetic direction
E41: the first extension direction
E42: the second extension direction
Embodiment
Figure 2 shows that structural representation according to the isotropic radiation plate aerial of one embodiment of the invention.With reference to Fig. 2, the plate aerial 200 of isotropic radiation comprises a substrate 210, a dipole antenna 220, a microstrip line group 230, a channel selection module 240, one first distribution 251 and one second distribution 252.Wherein, substrate 210 has a first surface 211 (be equivalent to X-axis and Y-axis constitute plane), and a second surface 212 plane of X-axis and Y-axis formation (be equivalent to-).
Further, Figure 3 shows that the perspective structure schematic diagram of plate aerial on vertical plane in order to the isotropic radiation of key diagram 2, wherein Fig. 3 indicates microstrip line group 230, channel selection module 240, first distribution 251 and second distribution, the 252 perpendicular projection relative position at first surface 211 with dotted line.
Please be simultaneously with reference to Fig. 2 and Fig. 3, microstrip line group 230 comprises one first microstrip line 231 and one second microstrip line 232.Wherein, first microstrip line 231 is electrically connected to first radiant body 221 by one first guide hole 261, and second microstrip line 232 is electrically connected to second radiant body 222 by one second guide hole 262.On physical arrangements, as shown in Figure 3, first microstrip line 231 is a starting point with the bottom of first radiant body 221, extends spirally along clockwise rotational trajectory from inside to outside, with around first radiant body 221.In addition, second microstrip line 232 is a starting point with the bottom of second radiant body 222, extends spirally along anticlockwise rotational trajectory from inside to outside, with around second radiant body 222.
On the whole, first microstrip line 231 and second microstrip line 232 are along two opposite rotational trajectories extend spirally (extension), and in the process that extends, on vertical plane, overlap with first radiant body 221, second radiant body 222 respectively, meaning is the upright projection scope that first radiant body 221 and second radiant body 222 will exceed first microstrip line 231 and second microstrip line 232; In addition, first microstrip line 231 and second microstrip line 232 can also the symmetry or asymmetric mode extend.Thus, the sense of current that is indicated with reference to label D31, the first surface 211 that penetrates substrate 210 will be worn in the magnetic field that first microstrip line 231 is produced, the magnetic field shown in the label M32 (Magnetic field) direction just, and the first surface 211 that penetrates substrate 210, the just magnetic direction shown in the label M33 also will be worn in the magnetic field that second microstrip line 232 is produced.Whereby, first microstrip line 231 and second microstrip line 232 will form a pair of synchronous magnetic dipole, and formed magnetic dipole is vertical mutually with the eelctric dipole that dipole antenna 220 is produced.Therefore, the antenna 200 of isotropic radiation can produce two orthogonal polarizations components by dipole antenna 120 and microstrip line group 230, and then form the field pattern of isotropic radiation.
Please continue with reference to Fig. 2 and Fig. 3, channel selects module 240 to comprise a plurality of first Channel Elementss 241～242 and a plurality of second channels unit 243～244, and Channel Elements 241～244 comprises an inductance and a switch separately.For instance, first Channel Elements 241 comprises an inductance L 21 and a switch SW 21.Wherein, first end of switch SW 21 electrically connects first microstrip line 231.First end of inductance L 21 electrically connects second end of switch SW 21, and its second end electrically connects first distribution 251.
Similarly, first Channel Elements 242 comprises an inductance L 22 and a switch SW 22.Wherein, first end of switch SW 22 electrically connects first microstrip line 231.First end of inductance L 22 electrically connects second end of switch SW 22, and its second end electrically connects first distribution 251.On the other hand, second channel unit 243 comprises an inductance L 23 and a switch SW 23.Wherein, switch SW 23 and inductance L 23 are serially connected between second microstrip line 232 and second distribution 252 mutually.In addition, second channel unit 244 comprises an inductance L 24 and a switch SW 24.Wherein, switch SW 24 and inductance L 24 are serially connected between second microstrip line 232 and second distribution 252 mutually.
Further, on physical arrangements, switch SW 21 in first Channel Elements 241 and inductance L 21 are that one first extension direction E41 along first microstrip line 231 is connected in series mutually, and the switch SW 22 in first Channel Elements 242 and inductance L 22 also are that the first extension direction E41 along first microstrip line 231 is connected in series mutually.In addition, first Channel Elements 241 and 242 is that first distribution 251 then is to continue with first Channel Elements 241～242 along the first extension direction E41 to be connected in series along the direction of the first extension direction E41 mutually side by side.
On the other hand, switch SW 23 in the second channel unit 243 and inductance L 23 are that one second extension direction E42 along second microstrip line 232 is connected in series mutually, and the switch SW in the second channel unit 244 24 and inductance L 24 also are that the second extension direction E42 along second microstrip line 232 is connected in series mutually.In addition, second channel unit 243 and 244 is that second distribution 252 then is to continue with second channel unit 243～244 along the second extension direction E42 to be connected in series along the direction of the second extension direction E42 mutually side by side.
In whole start, resistance value X=ω * L=of inductance L 21～L24 (2 π f) * L.That is to say that the resistance value X of inductance L 21～L24 is proportional to frequency f, therefore, rising along with frequency f, the resistance value X of inductance L 21～L24 is also just big more, and then causes inductance L 21～L24 to have relatively the function that stops (blocking) high-frequency signal, and meaning i.e. the function (screening) of screening.That is to say, inductance L 21～L24 is equivalent to a filter respectively, wherein the low frequency signal from microstrip line group 230 can be sent to first distribution 251 and second distribution 252 by inductance L 21～L24, then can't pass through inductance L 21～L24 relatively from the high-frequency signal of microstrip line group 230.
Whereby, as shown in Figure 3, when switch SW 21 and switch SW 23 conductings (turn on), and when switch SW 22 and switch SW 24 not conductings (turn off), concerning the left side member of the antenna 200 of isotropic radiation, first radiant body 221 is connected in series the current path that forms with first microstrip line 231 will form a high frequency path, and the current path that first radiant body 221, first microstrip line 231, switch SW 21, inductance L 21 and first distribution, 251 serial connections form will form a low frequency path.Relatively, concerning the right-hand part member of the plate aerial 200 of isotropic radiation, second radiant body 222 is connected in series the current path that forms with second microstrip line 232 will form a high frequency path, and the current path that second radiant body 222, second microstrip line 232, switch SW 23, inductance L 23 and second distribution, 252 serial connections form will form a low frequency path.
In other words, when switch SW 21 and switch SW 23 conductings, and when switch SW 22 and switch SW 24 not conductings, but the plate aerial 200 of isotropic radiation is with receiving and transmitting double frequency band (dual band) signal, just from high workload frequency band (high frequency band) and from the signal that hangs down working band (low frequency band).It should be noted that, if in the plate aerial of isotropic radiation 200 applied height and the low working band, at least can comprise a plurality of channels respectively with different operating frequency, the present invention for convenience of description with explanation, so only make example with high-frequency channel (channel), medium frequency channel and low frequency channel, then the plate aerial 200 of Ci Shi isotropic radiation can be in order to the signal of transmitting-receiving from the low frequency channel out of the ordinary in high and the low working band, because this moment, formed current path was the longest.
Relatively, as shown in Figure 3, when switch SW 21 and switch SW 23 not conductings, and when switch SW 22 and switch SW 24 conductings, concerning the left side member of the plate aerial 200 of isotropic radiation, the low frequency path of the plate aerial 200 of isotropic radiation will be switched the current path that forms to by first radiant body 221, first microstrip line 231, switch SW 22, inductance L 22 and first distribution, 251 serial connections.Relatively, concerning the right-hand part member of the plate aerial 200 of isotropic radiation, the low frequency path of the plate aerial 200 of isotropic radiation will be switched the current path that forms to by second radiant body 222, second microstrip line 232, switch SW 24, inductance L 24 and second distribution, 252 serial connections.
What deserves to be mentioned is that by the low frequency path that inductance L 21 and inductance L 23 are constituted, it mainly is mobile along the outward flange of microstrip line will causing the electric current in first microstrip line 231 and second microstrip line 232.Relatively, by the low frequency path that inductance L 22 and inductance L 24 are constituted, it mainly is mobile along the inward flange of microstrip line will causing the electric current in first microstrip line 231 and second microstrip line 232.Therefore, when switch SW 21 and switch SW 23 not conductings, and switch SW 22 is during with switch SW 24 conductings, and the low frequency path that it constituted will relatively shorten.In other words, plate aerial 200 original operated height of isotropic radiation and the low frequency channel in the low working band all will be switched paramount frequency channel, because formed current path is the shortest.
In addition, as shown in Figure 3, when the equal conducting of switch SW 21～SW24, concerning the left side member of the plate aerial 200 of isotropic radiation, the low frequency path of the plate aerial 200 of isotropic radiation mainly is to form by inductance L 21 and inductance L 22, and concerning the right-hand part member of the plate aerial 200 of isotropic radiation, the low frequency path of the plate aerial 200 of isotropic radiation mainly is to form by inductance L 23 and inductance L 24.At this moment, the electric current in first microstrip line 231 and second microstrip line 232 mainly is on average to flow dispersedly, so the interior low frequency channel of the original operated height of the plate aerial 200 of isotropic radiation and low working band all will be switched to the medium frequency channel.
Moreover, as shown in Figure 3, as switch SW 21～SW24 all during not conducting, the plate aerial 200 of isotropic radiation can't be received and dispatched the signal of low working band, and then the plate aerial 200 that causes isotropic radiation only can continue to receive and dispatch the signal of high workload frequency band, this kind situation is comparatively special, mostly leads because of the base station in single band (non-multifrequency) is provided with situation, as in order to the base station of high frequency band to be provided.In other words, select the switching of the conducting state of module 240, a plurality of high frequencies and the generation of low frequency path that have the different operating frequency in the time of can causing dipole antenna 220 conducting to the first distributions 251 and second distribution 252 by channel.Whereby, the plate aerial 200 of isotropic radiation can be by controlling the conducting state of each switch in first Channel Elements 241～242 and the second channel unit 243～244 on a 50-50 basis, and from a plurality of high frequencies and low frequency path switching channels optionally, that is have frequency to select the function of (frequency selection), promptly correspond to the different channel (channel) in the height working channel.What deserves to be mentioned is, in practical application, under the antenna 100 of traditional isotropic radiation of Fig. 1 is compared, inductance L 21～L24 in the Channel Elements 241～244 and switch SW 21～24, its occupied volume is little than the microstrip line in the spiral type radiant body 130 132 all.For instance, the length L of microstrip line 132 is greater than 2cm in the spiral type radiant body 130, and the length of inductance L 21～L24 then can be no more than 0.3cm.Therefore, the plate aerial 200 of the described isotropic radiation of present embodiment has microminiaturized advantage.
In addition, with the antenna 100 of traditional isotropic radiation of Fig. 1 in comparison, the extended length that can make first distribution 251 and second distribution 252 along with the application of Channel Elements 241～244 with all dwindle around degree, and the effects that the low frequency path that makes the plate aerial 200 of isotropic radiation produces similar many ring spiral type (spiral) inductance will relatively reduce, and then help the lifting of radiation efficiency of the plate aerial 200 of isotropic radiation.Moreover the size of inductance L 21～L24 can not be subject to the restriction of the printing technology of substrate 210 in the Channel Elements 241～244, so can improve the isolation to high-frequency signal.In addition, the switching that the plate aerial 200 of isotropic radiation also can be by Channel Elements 241～244,200 of plate aerials that change isotropic radiation are in order to the frequency of operation of signal in the high workload frequency band of transmitting-receiving and the low working band.
It should be noted that the microstrip line group 230 in the plate aerial 200 of isotropic radiation, its mode around radiant body 221 and 222 can be carried out adaptive adjustment according to design.In addition, the allocation position of channel selection module 240, first distribution 251 and second distribution 252 also can be along with the change to some extent around the change of mode of microstrip line group 230.Usually know that in order to cause this area to have the knowledgeable can more understand the present invention, below will enumerate the disposable enforcement aspect of plate aerial of isotropic radiation.
Figure 4 shows that the perspective structure schematic diagram of plate aerial on vertical plane according to the isotropic radiation of another embodiment of the present invention.Please be simultaneously with reference to Fig. 4 and Fig. 3, in Fig. 4 embodiment, first microstrip line 231 is to extend spirally along two opposite rotational trajectories with second microstrip line 232, and surrounds first radiant body 221 and second radiant body 222 respectively in the process that extends on vertical plane.Specifically, first radiant body 221 and second radiant body 222 will not exceed the upright projection scope of first microstrip line 231 and second microstrip line 232.
Fig. 3 is to extend spirally along two opposite rotational trajectories from inside to outside with first microstrip line 231 and second microstrip line 232 shown in Figure 4.Yet in practical application, first microstrip line 231 also can extend along two opposite rotational trajectories in addition with second microstrip line 232 interiorly spirally.For instance, Fig. 5 and Fig. 6 are depicted as the perspective structure schematic diagram of plate aerial on vertical plane according to the isotropic radiation of further embodiment of this invention respectively.
As Fig. 5 and shown in Figure 6, first microstrip line 231 all is that the bottom with first radiant body 221 is a starting point, extend spirally along clockwise rotational trajectory from outside to inside, and around first radiant body 221.Relatively, second microstrip line 232 all is that the bottom with second radiant body 222 is a starting point, extend spirally along anticlockwise rotational trajectory from outside to inside, and around second radiant body 222.
In addition, change along with first microstrip line 231 and second microstrip line 232 around mode, channel selects module 240, first distribution 251 and second distribution 252 will be along the first extension direction E41 and the second extension direction E42, be configured in first microstrip line 231 and second microstrip line 232 inner edge near.Moreover Fig. 5 and Fig. 6 main difference part are that first radiant body 221 shown in Figure 5 and second radiant body 222 will exceed the upright projection scope of first microstrip line 231 and second microstrip line 232.And first radiant body 221 shown in Figure 6 and second radiant body 222 will not exceed the upright projection scope of first microstrip line 231 and second microstrip line 232.
Further, Fig. 3 first microstrip line 231 and second microstrip line 232 extremely shown in Figure 6 all is respectively counterclockwise to extend with clockwise rotational trajectory.Yet in practical application, the rotational trajectory of first microstrip line 231 and second microstrip line 232 is to exchange, and only need maintain two rotational trajectories is that reverse situation gets final product.
For instance, Fig. 7 and Fig. 8 are depicted as the perspective structure schematic diagram of plate aerial on vertical plane according to the isotropic radiation of yet another embodiment of the invention respectively.As Fig. 7 and shown in Figure 8, first microstrip line 231 all is that the bottom with first radiant body 221 is a starting point, extend spirally along anticlockwise rotational trajectory from inside to outside, and around first radiant body 221.Relatively, second microstrip line 232 all is that the bottom with second radiant body 222 is a starting point, extend spirally along clockwise rotational trajectory from inside to outside, and around second radiant body 222.
In addition, along with first microstrip line 231 and second microstrip line 232 from inside to outside around mode, channel selects module 240, first distribution 251 and second distribution 252 will be along the first extension direction E41 and the second extension direction E42, be configured in first microstrip line 231 and second microstrip line 232 outer rim near.Moreover Fig. 7 and Fig. 8 main difference part are that first radiant body 221 shown in Figure 7 and second radiant body 222 will exceed the upright projection scope of first microstrip line 231 and second microstrip line 232.And first radiant body 221 shown in Figure 8 and second radiant body 222 will not exceed the upright projection scope of first microstrip line 231 and second microstrip line 232.
In addition, Fig. 9 and Figure 10 are depicted as the perspective structure schematic diagram of plate aerial on vertical plane according to the isotropic radiation of yet another embodiment of the invention respectively.As Fig. 9 and shown in Figure 10, first microstrip line 231 all is that the bottom with first radiant body 221 is a starting point, extend spirally along anticlockwise rotational trajectory from outside to inside, and around first radiant body 221.Relatively, second microstrip line 232 all is that the bottom with second radiant body 222 is a starting point, extend spirally along clockwise rotational trajectory from outside to inside, and around second radiant body 222.
In addition, along with first microstrip line 231 and second microstrip line 232 from outside to inside around mode, channel selects module 240, first distribution 251 and second distribution 252 will be along the first extension direction E41 and the second extension direction E42, be configured in first microstrip line 231 and second microstrip line 232 inner edge near.Moreover Fig. 9 and Figure 10 main difference part are that first radiant body 221 shown in Figure 9 and second radiant body 222 will exceed the upright projection scope of first microstrip line 231 and second microstrip line 232.And first radiant body 221 shown in Figure 10 and second radiant body 222 will not exceed the upright projection scope of first microstrip line 231 and second microstrip line 232.
In sum, the present invention utilizes the microstrip line group that extends spirally along two opposite rotational trajectories to form a pair of synchronous magnetic dipole, and the eelctric dipole that utilizes magnetic dipole and dipole antenna to produce produces the field pattern of isotropic radiation.In addition, the present invention also utilizes the microstrip line group and the dipole antenna that are electrical connected to form a high frequency path, and select the conducting state of module, generation has the different operating frequency when causing dipole antenna conducting to the first distribution and second distribution a plurality of high frequencies and low frequency path by control channel.Moreover, the present invention is the improvement about a kind of plate type antenna structure, it can allow from radio wave signal from all directions received by this antenna as far as possible satisfactoryly, can obviously improve the collection of letters effect of mobile phone, reaches the target at the no dead angle of communication, and structural design because of complanation, so more can reduce cost, make Antenna Design more firm (robustness) simultaneously, and be easy to and other electronic component and circuit, as the RF radio circuit, integrate and be assembled in the mobile phone.Though the present invention with embodiment openly as above; right its is not in order to limit the present invention; have in the technical field under any and know the knowledgeable usually; without departing from the spirit and scope of the present invention; when doing a little change and retouching, so protection scope of the present invention is as the criterion when looking claims person of defining.
Claims (13)
1. the plate aerial of an isotropic radiation comprises:
One substrate has a first surface and a second surface;
One dipole antenna is arranged on this first surface, and has one first radiant body and one second radiant body;
One microstrip line group, be arranged on this second surface, and be electrically connected to this dipole antenna, wherein one first microstrip line in this microstrip line group and one second microstrip line are on a vertical plane, bottom with this first radiant body and this second radiant body is a starting point respectively, extend spirally along two opposite rotational trajectories, to form a high frequency path with this dipole antenna; And
One channel is selected module, be arranged on this second surface, and be electrically connected to this microstrip line group, wherein the plate aerial of this isotropic radiation is selected the conducting state of module by this channel of control, form a low frequency path when causing this dipole antenna conducting to one first distribution and one second distribution, wherein can produce a plurality of channels respectively in this high frequency path and this low frequency path with different operating frequency.
2. the plate aerial of isotropic radiation according to claim 1, wherein this channel selects module to comprise:
A plurality of first Channel Elementss are electrically connected between this first microstrip line and this first distribution; And
A plurality of second channels unit is electrically connected between this second microstrip line and this second distribution,
Wherein, the plate aerial of this isotropic radiation is controlled the conducting state of those first Channel Elementss and those second channel unit on a 50-50 basis, optionally to switch a channel respectively from these channels in this high frequency path and this low frequency path.
3. the plate aerial of isotropic radiation according to claim 2, wherein those first Channel Elementss comprise respectively:
One first switch, its first end electrically connects this first microstrip line; And
One first inductance, its first end electrically connects second end of this first switch, and second end of this first inductance electrically connects this first distribution.
4. the plate aerial of isotropic radiation according to claim 3, wherein this first switch in those first Channel Elementss is connected in series mutually with the one first extension direction of this first inductance along this first microstrip line, and those first Channel Elementss along the direction of this first extension direction mutually side by side.
5. the plate aerial of isotropic radiation according to claim 4, wherein this first distribution continues with those first Channel Elementss along this first extension direction and is connected in series.
6. the plate aerial of isotropic radiation according to claim 2, wherein those second channel unit comprise respectively:
One second switch, its first end electrically connects this second microstrip line; And
One second inductance, its first end electrically connects second end of this second switch, and second end of this second inductance electrically connects this second distribution.
7. the plate aerial of isotropic radiation according to claim 6, wherein this second switch in those second channel unit is connected in series mutually with the one second extension direction of this second inductance along this second microstrip line, and those second channel unit along the direction of this second extension direction mutually side by side.
8. the plate aerial of isotropic radiation according to claim 7, wherein this second distribution continues with those second channel unit along this second extension direction and is connected in series.
9. the plate aerial of isotropic radiation according to claim 2, wherein this first radiant body, this first microstrip line, those first Channel Elementss and this first distribution are symmetrical with this second radiant body, this second microstrip line, those second channel unit and this second distribution respectively.
10. the plate aerial of isotropic radiation according to claim 1, wherein this first microstrip line and this second microstrip line are on this vertical plane, can distinguish from inside to outside or from outside to inside and extend spirally, with around this first radiant body and this second radiant body along two opposite rotational trajectories.
11. the plate aerial of isotropic radiation according to claim 1, wherein said two rotational trajectories comprise a clockwise rotational trajectory and an anticlockwise rotational trajectory.
12. the plate aerial of isotropic radiation according to claim 1, wherein this first radiant body and this second radiant body do not exceed the upright projection scope of this first microstrip line and this second microstrip line.
13. the plate aerial of isotropic radiation according to claim 1, wherein this first radiant body and this second radiant body exceed the upright projection scope of this first microstrip line and this second microstrip line.
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| CN 200910166688 CN101997172B (en) | 2009-08-28 | 2009-08-28 | Nondirectional radiating panel antenna |
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| CN 200910166688 CN101997172B (en) | 2009-08-28 | 2009-08-28 | Nondirectional radiating panel antenna |
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| CN101997172A true CN101997172A (en) | 2011-03-30 |
| CN101997172B CN101997172B (en) | 2013-05-22 |
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Cited By (3)
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| CN102394352A (en) * | 2011-07-14 | 2012-03-28 | 东南大学 | Double-frequency broadband reconfigurable micro-strip antenna |
| CN105140642A (en) * | 2014-05-27 | 2015-12-09 | 香港城市大学 | Circularly polarized antenna |
| CN106207478A (en) * | 2015-04-07 | 2016-12-07 | 智易科技股份有限公司 | Dual-frequency antenna constructed on two sides of substrate |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102394352A (en) * | 2011-07-14 | 2012-03-28 | 东南大学 | Double-frequency broadband reconfigurable micro-strip antenna |
| CN102394352B (en) * | 2011-07-14 | 2014-01-08 | 东南大学 | Double-frequency broadband reconfigurable micro-strip antenna |
| CN105140642A (en) * | 2014-05-27 | 2015-12-09 | 香港城市大学 | Circularly polarized antenna |
| CN105140642B (en) * | 2014-05-27 | 2019-06-18 | 香港城市大学 | Circular polarized antenna |
| CN106207478A (en) * | 2015-04-07 | 2016-12-07 | 智易科技股份有限公司 | Dual-frequency antenna constructed on two sides of substrate |
| CN106207478B (en) * | 2015-04-07 | 2019-01-25 | 智易科技股份有限公司 | Dual-frequency antenna constructed on two sides of substrate |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101997172B (en) | 2013-05-22 |
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