CN1701466A - Reflecting plate-equipped planar antenna - Google Patents
Reflecting plate-equipped planar antenna Download PDFInfo
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- CN1701466A CN1701466A CN 200480001003 CN200480001003A CN1701466A CN 1701466 A CN1701466 A CN 1701466A CN 200480001003 CN200480001003 CN 200480001003 CN 200480001003 A CN200480001003 A CN 200480001003A CN 1701466 A CN1701466 A CN 1701466A
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Abstract
A reflecting plate-equipped planar antenna which is narrow in shape. A planar reflecting plate (21) is installed on the back surface of a planar radiation element (20) consisting of triangular stacked loop elements. Side sections (21b) on opposite sides of the reflecting plate (21) are bent toward the radiation element (20), the distance (alpha2) between the front end edge of each side section (21b) and the side edge of the radiation element (20) being made short. This makes it possible to improve the electrical characteristics of the reflecting plate-equipped planar antenna (2) even if the distance (D2) between the radiation element (20) and the reflecting plate (21) is narrowed.
Description
Technical field
The invention relates to can be at the stacked loop antenna with reflecting plate of UHF with work, particularly about the flat plane antenna that preferably has reflecting plate of the UHF antenna that is applicable to the received terrestrial digital broadcasting that receives the UHF frequency band.
Background technology
Received terrestrial digital broadcasting, different with the analog broadcasting in past, as long as can receive certain level above come electric wave owing to be the image that digital signal just can both obtain distinctness.Therefore, the antenna of reception received terrestrial digital broadcasting does not need to be necessary for high-gain.Thus, expectation have a kind ofly compare with the antenna in past, the antenna of small-sized and maneuverable shape.Past in the UHF television antenna that UHF band can be worked, it is well-known that to have with the Uda antenna be antenna operation principle, that be arranged with radiant element and reflecting element (reflecting plate).In this antenna, the interval of radiant element and reflecting element (reflecting plate) is about λ/4 usually when the wavelength of the centre frequency of supposing working band is λ.As an example of this class antenna, known have a for example skeleton grooves array antenna (with reference to non-patent literature 1).
Non-patent literature 1: 3 people UHF-TV received signals skeleton grooves array antenna (1987-4-16) outside the electronic communication association new well of technical research report Vol.87 No.3 A.P87-5 is grand
But, be in the flat plane antenna that has reflecting plate operation principle, shown in non-patent literature 1 with the Uda antenna, interval between radiant element and the reflecting element (reflecting plate) is necessary to keep and the corresponding interval of frequency band, since the UHF frequency band be 470～770MHz then the wavelength of its centre frequency be about 484mm, so at least need be more than or equal to the interval of 100mm.Thus, just become the long big flat plane antenna that has reflecting plate of shape of depth.
Summary of the invention
Therefore, the object of the present invention is to provide a kind of little flat plane antenna that has reflecting plate of shape that can make the depth weak point.
For reaching above purpose, the flat plane antenna that has reflecting plate of the present invention, its topmost characteristic is to have: radiant element, the interval of leaving regulation from this radiant element is provided with, both sides are to the plane reflecting plate of radiant element lateral bending song; When the wavelength of the centre frequency of working band is λ, the interval of regulation can constriction to about 0.06 λ.
According to the present invention, radiant element and reflecting plate can constriction arrive about 0.06 λ, so can become the short small-sized flat plane antenna that has reflecting plate of depth.And, though be the short small-sized flat plane antenna that has reflecting plate of depth, but since the both sides of reflecting plate to radiant element lateral bending song, its front-end edge near radiant element, so can become the antenna of in frequency band, fully working as the received terrestrial digital broadcasting of UHF band.
Description of drawings
Fig. 1 is the stereogram of structure of the execution mode 1 of the expression flat plane antenna that has a reflecting plate of the present invention.
Fig. 2 is the plane graph of structure of the execution mode 1 of the expression flat plane antenna that has a reflecting plate of the present invention.
Fig. 3 is the vertical view of structure of the execution mode 1 of the expression flat plane antenna that has a reflecting plate of the present invention.
To be expression compare with antenna relatively Fig. 4, the figure of the frequency characteristic of working gain in the structure of the execution mode 1 of the flat plane antenna that has a reflecting plate of the present invention.
To be expression compare with antenna relatively Fig. 5, the figure of the frequency characteristic of VSWR in the structure of the execution mode 1 of the flat plane antenna that has a reflecting plate of the present invention.
Fig. 6 is that expression is used for the figure with the structure of the flat plane antenna that has reflecting plate of the present invention flat plane antenna that compare, that have reflecting plate.
Fig. 7 is the stereogram of structure of the execution mode 2 of the expression flat plane antenna that has a reflecting plate of the present invention.
Fig. 8 is the plane graph of structure of the execution mode 2 of the expression flat plane antenna that has a reflecting plate of the present invention.
Fig. 9 is the vertical view of structure of the execution mode 2 of the expression flat plane antenna that has a reflecting plate of the present invention.
To be expression compare with antenna relatively Figure 10, the figure of the frequency characteristic of working gain in the structure of the execution mode 2 of the flat plane antenna that has a reflecting plate of the present invention.
To be expression compare with antenna relatively Figure 11, the figure of the frequency characteristic of VSWR in the structure of the execution mode 2 of the flat plane antenna that has a reflecting plate of the present invention.
To be expression compare with antenna relatively Figure 12, the figure of the frequency characteristic of the working gain in the structure of the execution mode 2 of the flat plane antenna that has a reflecting plate of the present invention during change parameter.
To be expression compare with antenna relatively Figure 13, the figure of the frequency characteristic of the VSWR in the structure of the execution mode 2 of the flat plane antenna that has a reflecting plate of the present invention during change parameter.
To be expression compare with antenna relatively Figure 14, the figure of the frequency characteristic of the working gain in the structure of the execution mode 2 of the flat plane antenna that has a reflecting plate of the present invention during change parameter.
To be expression compare with antenna relatively Figure 15, the figure of the frequency characteristic of the VSWR in the structure of the execution mode 2 of the flat plane antenna that has a reflecting plate of the present invention during change parameter.
To be expression compare with antenna relatively Figure 16, the figure of the frequency characteristic of the working gain in the structure of the execution mode 2 of the flat plane antenna that has a reflecting plate of the present invention during change parameter.
To be expression compare with antenna relatively Figure 17, the figure of the frequency characteristic of the VSWR in the structure of the execution mode 2 of the flat plane antenna that has a reflecting plate of the present invention during change parameter.
Figure 18 is that expression is used for the figure with the structure of the flat plane antenna that has reflecting plate of the present invention flat plane antenna that compare, that have reflecting plate.
Figure 19 is the figure of the flat plane antenna that has reflecting plate that expression relates to embodiments of the present invention 2 degree of improvement when changing parameter.
Figure 20 is illustrated in the flat plane antenna that has a reflecting plate of the present invention, adopts the stereogram of bipyramid radiant element as the structure of radiant element.
Figure 21 is illustrated in the flat plane antenna that has a reflecting plate of the present invention, adopts the stereogram of ring radiant element as the structure of radiant element.
Figure 22 is illustrated in the flat plane antenna that has a reflecting plate of the present invention, adopts the stereogram of dipole radiating elements as the structure of radiant element.
Figure 23 is illustrated in the flat plane antenna that has a reflecting plate of the present invention, adopts the stereogram of stacked dipole radiating elements as the structure of radiant element.
Figure 24 is the stereogram that is illustrated in the 1st structure in other structure example of the flat plane antenna that has a reflecting plate of the present invention.
Figure 25 is the vertical view that is illustrated in the 1st structure in other structure example of the flat plane antenna that has a reflecting plate of the present invention.
Figure 26 is the stereogram that is illustrated in the 2nd structure in other structure example of the flat plane antenna that has a reflecting plate of the present invention.
Figure 27 is the vertical view that is illustrated in the 2nd structure in other structure example of the flat plane antenna that has a reflecting plate of the present invention.
Figure 28 is the stereogram that is illustrated in the 3rd structure in other structure example of the flat plane antenna that has a reflecting plate of the present invention.
Figure 29 is the vertical view that is illustrated in the 3rd structure in other structure example of the flat plane antenna that has a reflecting plate of the present invention.
Embodiment
The purpose of short, the small-sized flat plane antenna that has reflecting plate of a kind of depth is provided, and is by having radiant element and leaving that the interval of regulation is provided with, the both sides plane reflecting plate to radiant element lateral bending song from this radiant element; When the wavelength of the centre frequency of working band was λ, the interval of regulation can constriction be realized to about 0.06 λ.
Fig. 1～Fig. 3 represents the structure of the execution mode 1 of the flat plane antenna that has a reflecting plate of the present invention.But, Fig. 1 is the stereogram of the structure of the expression flat plane antenna that has a reflecting plate of the present invention, Fig. 2 is the plane graph of the structure of the expression flat plane antenna that has a reflecting plate of the present invention, and Fig. 3 is the vertical view of the structure of the expression flat plane antenna that has a reflecting plate of the present invention.
As shown in these figures, relate to the flat plane antenna that has reflecting plate 1 of embodiments of the present invention 1, the radiant element 10 that constitutes by square dicyclo element and constitute with reflecting plate 11 that radiant element 10 is configured in the rear Face to face.
Reflecting plate 11 relatively bends to approximate right angle to the both sides of the metallic plate of rectangle and forms, as Fig. 1～shown in Figure 3 by constituting in the face of the face portion 11a of radiant element 10 and and the sidepiece 11b that forms bent at two side direction radiant elements, 10 1 lateral bendings of face portion 11a.
The flat plane antenna that has reflecting plate 1 that the present invention who constitutes like this is correlated with, shown in Fig. 2～3, if the horizontal wide of radiant element 10 is L1, the high wide wide wide W3 of being for W2, middle limit 10f for W1, top 10d and following 10e for H1, the right 10b and left side 10c, if the height of reflecting plate 11 is wide for L3 for L2, sidepiece 11b of H2, face portion 11a wide, establish the α that is spaced apart between the front-end edge of sidepiece 11b of the lateral margin that is spaced apart D, radiant element 10 of face portion 11a of radiant element 10 and reflecting plate 11 and reflecting plate 11.At this, high H1 at radiant element 10 is that about 280mm, wide W1 are that about 10mm, wide W2 are that about 30mm, wide W3 are about 10mm, the high H2 of reflecting plate 11 is that about 280mm, wide L2 are that about 40mm, interval D are for when about 40mm for about 180mm, wide L3 simultaneously, when interval is about 10mm～about 30mm, can form the flat plane antenna that has reflecting plate 1 that shows good electrical characteristics.
So, the frequency characteristic of the working gain of the flat plane antenna that have reflecting plate 1 of interval when about 11mm in Fig. 4, the frequency characteristic of voltage standing wave ratio (VSWR) has the curve of bullet to represent with the sign that is expressed as " the present invention " in Fig. 5.With reference to Fig. 4, can know in the 470MHz～770MHz of the frequency band of received terrestrial digital broadcasting, become the good operation gain characteristic of 4dBi～6dBi.In addition,, can know in the 470MHz～770MHz of the frequency band of received terrestrial digital broadcasting, can access approximately good VSWR smaller or equal to 3 with reference to Fig. 5.
In addition, Fig. 4 and the curve that indicates with rhombus shown in Figure 5 are the frequency characteristics of the working gain and the VSWR of comparison antenna, in order to represent to enumerate about the effect of the sidepiece 11b of reflecting plate 11 in the flat plane antenna 1 that has a reflecting plate of the present invention.Promptly, relatively antenna is the flat plane antenna that has reflecting plate 100 shown in Figure 6.The flat plane antenna 100 that this has reflecting plate is the unbending flat reflecting plate 111 in both sides to be disposed face-to-face with the radiant element 110 that is made of square dicyclo element form.Radiant element 110 is identical with radiant element 10 structures.And the interval d between radiant element 110 and the reflecting plate 111 is about 40mm, and other size is with identical about the flat plane antenna 1 that has a reflecting plate of the present invention.
At this, with reference to Fig. 4, can know the comparison antenna that is expressed as the flat plane antenna 100 that has reflecting plate among Fig. 6, in the low-frequency band in the 470MHz～770MHz of the frequency band of received terrestrial digital broadcasting, working gain reduces.In addition,, can know in the low-frequency band in the 470MHz～770MHz of the frequency band of received terrestrial digital broadcasting, can reach approximately VSWR more than or equal to 5 deterioration with reference to Fig. 5.
To the electrical characteristics of the flat plane antenna that has reflecting plate 1 of being correlated with such as Fig. 4 and the present invention shown in Figure 5, with the electrical characteristics of the unbending flat plane antenna 100 that has a reflecting plate in reflecting plate 111 both sides as shown in Figure 6 as can be known, the both sides of crooked reflecting plate 11 and sidepiece 11b is set, then the electrical characteristics of the low-frequency band in 470MHz～770MHz become well, and sidepiece 11b can play the effect that the electrical characteristics that make the low-frequency band among 470MHz～770MHz become good.So can improve electrical characteristics, be considered under the situation that keeps the interval D between radiant element 10 and the reflecting plate 11, to make the interval (with reference to Fig. 3) of front-end edge of the lateral margin of radiant element 10 and sidepiece 11b diminish by sidepiece 11b is set by sidepiece 11b is set.And, because the wide W2 of top 10d and following 10e broadens, so can guarantee the interior gain of broad frequency band of 470MHz～770MHz.In addition, radiant element 10 is poor more with the more little electrical characteristics of interval D of reflecting plate 11, and radiant element 10 is under the situation of about 30mm with the interval D of reflecting plate 11, can obtain the electrical characteristics of abundance as the electrical characteristics of the flat plane antenna 1 that has reflecting plate.
In addition, when to make UHF frequency band about the flat plane antenna that has a reflecting plate 1 work of the present invention be 470MHz～770MHz, the wavelength X c of its centre frequency was about 484mm.About the 1st Q-RING element of the flat plane antenna 1 that has a reflecting plate of the present invention and the outer perimeter of the 2nd Q-RING element, for the wavelength X a of 470MHz, be about 0.93 λ a, girth is about 1.2 λ b for 770MHz in it.So, the outer perimeter of square dicyclo element (radiant element 10) that has a flat plane antenna 1 of reflecting plate is roughly the length of wavelength X a of the lower frequency limit of service band, and girth is roughly the length of wavelength X b of the upper limiting frequency of service band in it.And, even if the high H2 of reflecting plate 11 is the height of 0.86H1～1.15H1 with respect to the high H1 of radiant element 10, also can keep good electrical characteristics.And then, interval D between radiant element 10 and the reflecting plate 11 can constriction arrive about 0.06 λ c, the interval of the front-end edge of the lateral margin of radiant element 10 and sidepiece 11b is smaller or equal to interval D, and it is more little, and the electrical characteristics that have the flat plane antenna 1 of reflecting plate just can be improved more.
Fig. 7～Fig. 9 represents the structure of the execution mode 2 of the flat plane antenna that has a reflecting plate of the present invention.But, Fig. 7 is the stereogram of the structure of the expression flat plane antenna that has a reflecting plate of the present invention, Fig. 8 is the plane graph of the structure of the expression flat plane antenna that has a reflecting plate of the present invention, and Fig. 9 is the vertical view of the structure of the expression flat plane antenna that has a reflecting plate of the present invention.
As shown in these figures, relate to the flat plane antenna that has reflecting plate 2 of embodiments of the present invention 2, the radiant element 20 that constitutes by triangle dicyclo element and constitute with reflecting plate 21 that radiant element 20 is configured in the rear Face to face.
Reflecting plate 21 relatively bends to approximate right angle to the both sides of the metallic plate of rectangle and forms, as Fig. 7～shown in Figure 9 by constituting in the face of the face portion 21a of radiant element 20 and and the sidepiece 21b that forms bent at two side direction radiant elements, 20 lateral bendings of face portion 21a.
The flat plane antenna that has reflecting plate 2 that the present invention who constitutes like this is correlated with, shown in Fig. 8～9, if the horizontal wide of radiant element 20 is L11, height is H11, the wide of top 20d and following 20e is W12, the wide of the inboard of the linking part of the linking part of hypotenuse 20b and hypotenuse 20g and hypotenuse 20c and hypotenuse 20f is W13, the wide of the outside is W14, if the height of reflecting plate 21 is H12, the wide of face portion 21a is L12, the wide of sidepiece is L13, establish radiant element 20 and reflecting plate 21 face portion 21a be spaced apart D2, be spaced apart α 2 between the sidepiece 21b of the lateral margin of radiant element 20 and reflecting plate 21.
At this, at the high H11 of radiant element 20 is that about 280mm, wide L11 are that 220mm, wide W12 are that about 50mm, wide W13 are that about 10mm, wide W14 are about 40mm, simultaneously the high H12 of reflecting plate 21 be about 280mm, wide L12 for about 240mm, wide L13 be about 40mm, interval D 2 be about 40mm, interval 2 be the frequency characteristic of working gain of the flat plane antenna that has reflecting plate 2 when about 10mm in Figure 10, the frequency characteristic of voltage standing wave ratio (VSWR) has the curve of bullet to represent with the sign that is expressed as " the present invention " in Figure 11.With reference to Figure 10, can know in the 470MHz～770MHz of the frequency band of received terrestrial digital broadcasting, can reach good operation gain characteristic more than or equal to 6dBi.In addition,, can know in the 470MHz～770MHz of the frequency band of received terrestrial digital broadcasting, can access approximately good VSWR smaller or equal to 3 with reference to Figure 11.
In addition, Figure 10 and the curve that indicates with rhombus shown in Figure 11 are the frequency characteristics of the working gain and the VSWR of comparison antenna, in order to represent to enumerate about the effect of the sidepiece 21b of reflecting plate 21 in the flat plane antenna 2 that has a reflecting plate of the present invention.Promptly, relatively antenna is the flat plane antenna that has reflecting plate 200 shown in Figure 180.The flat plane antenna 200 that this has reflecting plate is the unbending flat reflecting plate 221 in both sides to be disposed face-to-face with the radiant element 220 that is made of triangle dicyclo element form.Radiant element 220 is identical with radiant element 20 structures.And the interval d2 between radiant element 220 and the reflecting plate 221 is about 40mm, and other size is with identical about the flat plane antenna 2 that has a reflecting plate of the present invention.
At this, with reference to Figure 10, the wide 320mm of the width that can know the comparison antenna that is expressed as the flat plane antenna 200 that has reflecting plate among Figure 18 during for not crooked reflecting plate 21, in the low-frequency band of the 470MHz～770MHz of the frequency band of received terrestrial digital broadcasting, working gain reduces.In addition, with reference to Figure 11, can know that VSWR can deterioration in the low-frequency band of the 470MHz～770MHz of the frequency band of received terrestrial digital broadcasting.
To the electrical characteristics of the flat plane antenna that has reflecting plate 2 of being correlated with such as Figure 10 and the present invention shown in Figure 11, with as shown in figure 18 unbending electrical characteristics that have the flat plane antenna 200 of reflecting plate in reflecting plate 221 both sides, can know, the both sides of crooked reflecting plate 21 and sidepiece 21b is set, electrical characteristics in the low-frequency band of 470MHz～770MHz become well, and sidepiece 21b can play the effect that the electrical characteristics of the low-frequency band that makes 470MHz～770MHz become good.So can improve electrical characteristics, be considered under the situation that keeps the interval D 2 between radiant element 20 and the reflecting plate 21, to make the interval 2 (with reference to Fig. 9) of front-end edge of the lateral margin of radiant element 20 and sidepiece 21b diminish by sidepiece 21b is set by sidepiece 21b is set.And, because the wide W12 of top 20d and following 20e broadens, so can guarantee the interior gain of broad frequency band of 470MHz～770MHz.In addition, radiant element 20 is poor more with the interval D 2 more little electrical characteristics of reflecting plate 21, and radiant element 20 is under the situation of about 30mm with the interval D 2 of reflecting plate 21, can obtain the electrical characteristics of abundance as the electrical characteristics of the flat plane antenna 2 that has reflecting plate.
In addition, when to make UHF frequency band about the flat plane antenna that has a reflecting plate 2 work of the present invention be 470MHz～770MHz, the wavelength X c of its centre frequency was about 484mm.About the 1st triangle loop member of the flat plane antenna 2 that has a reflecting plate of the present invention and the outer perimeter of the 2nd triangle loop member, for the wavelength X a of 470MHz, be about 0.9 λ a, girth is about 1.02 λ b for 770MHz in it.So, the outer perimeter of triangle dicyclo element (radiant element 20) that has a flat plane antenna 2 of reflecting plate is roughly the length of wavelength X a of the lower frequency limit of service band, and girth is roughly the length of wavelength X b of the upper limiting frequency of service band in it.And, even if the high H12 of reflecting plate 21, with respect to the high H11 of radiant element 20, be the height of 0.86H11～1.15H11, also can keep good electrical characteristics.And then, interval D 2 between radiant element 20 and the reflecting plate 21 can constriction arrive about 0.06 λ c, the interval 2 of the front-end edge of the lateral margin of radiant element 20 and sidepiece 21b is smaller or equal to interval D 2, and it is more little, and the electrical characteristics that have the flat plane antenna 2 of reflecting plate just can be improved more.
Then, Figure 12 and Figure 13 represent that wide L13 about the sidepiece 21b of the reflecting plate 21 of the flat plane antenna 2 that has a reflecting plate of the present invention changes to the working gain measured about 0.06 λ c (λ c is to use the wavelength of the centre frequency of frequency band) back and frequency characteristic and working gain as shown in figure 18 and the VSWR of VSWR.
With reference to Figure 12 and Figure 13, can know back about the wide shortening 10mm of sidepiece 21b about the electrical characteristics that have the flat plane antenna 2 of reflecting plate of the present invention, shown in bullet, in the low-frequency band of the 470MHz～770MHz of the frequency band of received terrestrial digital broadcasting a little deterioration taking place, but can access very good electrical characteristics.In addition, relatively the width of antenna is the wide 300mm when not having crooked reflecting plate 21, and compares the electrical characteristics generation deterioration of low-frequency band about the flat plane antenna 2 that has reflecting plate of the present invention.
Then, represent that with Figure 14 and Figure 15 wide L13 about the sidepiece 21b of reflecting plate 21 in the flat plane antenna 2 that has a reflecting plate of the present invention is reduced to about 0.08 λ c, the interval 2 of the sidepiece 21b of the lateral margin of radiant element 20 and reflecting plate 21 is changed into about 0.06 λ c (30mm) and the working gain that measures and the frequency characteristic of VSWR simultaneously, and the working gain and the VSWR of comparison antenna as shown in figure 18.
With reference to Figure 14 and Figure 15, can know interval 2 is widened the back about the electrical characteristics that have the flat plane antenna 2 of reflecting plate of the present invention, shown in bullet, in the low-frequency band of the 470MHz～770MHz of the frequency band of received terrestrial digital broadcasting a little deterioration taking place, but can access very good electrical characteristics.In addition, relatively the width of antenna is the wide 320mm when not having crooked reflecting plate 21, and compares the electrical characteristics generation deterioration of low-frequency band about the flat plane antenna 2 that has reflecting plate of the present invention.
Then, represent that with Figure 16 and Figure 17 wide L13 about the sidepiece 21b of reflecting plate 21 in the flat plane antenna 2 that has a reflecting plate of the present invention changes to about 0.06 λ c, the working gain that measures for about 0.06 λ c of the interval 2 of the sidepiece 21b of the lateral margin of radiant element 20 and reflecting plate 21 and the frequency characteristic of VSWR, and the working gain and the VSWR of comparison antenna as shown in figure 18 simultaneously.
With reference to Figure 17 and Figure 18, can know about the wide shortening 10mm of sidepiece 21b, interval 2 widen the back, about the electrical characteristics that have the flat plane antenna 2 of reflecting plate of the present invention, shown in bullet, in the low-frequency band of the 470MHz～770MHz of the frequency band of received terrestrial digital broadcasting a little deterioration taking place further, but still can access very good electrical characteristics.In addition, relatively the width of antenna is the wide 300mm when not having crooked reflecting plate 21, and compares the electrical characteristics generation deterioration of low-frequency band about the flat plane antenna 2 that has reflecting plate of the present invention.
Then, Figure 19 with graphical presentation about the interval 2 of the sidepiece 21b of the lateral margin of the wide L13 of the sidepiece 21b of the interval D 2 of the radiant element 20 of the flat plane antenna 2 that has a reflecting plate of the present invention and reflecting plate 21, reflecting plate 21, radiant element 20 and reflecting plate 21 as parameter, the improvement degree of the electrical characteristics when changing (VSWR).
With reference to Figure 19, the interval 2 of the sidepiece 21b of the lateral margin of radiant element 20 and reflecting plate 21 is big more, and the degree of improvement of electrical characteristics reduces more.In addition, the wide L13 of the sidepiece 21b of reflecting plate 21 is big more, and the degree of improvement of electrical characteristics reduces more.And then the interval D 2 of radiant element 20 and reflecting plate 21 is big more, improves frequency range and narrows down more.
Above Shuo Ming the flat plane antenna that has reflecting plate of the present invention is the such triangle double loop antenna of the such rectangle double loop antenna of as shown in Embodiment 1 radiant element 10 or radiant element as shown in Embodiment 2 20.The flat plane antenna that has reflecting plate of the present invention is not limited to these radiant elements, can also adopt the radiant element of various structures.The structure example that has the adoptable radiant element of flat plane antenna of reflecting plate of the present invention is as Figure 20～shown in Figure 23.
Figure 20 is illustrated in the flat plane antenna that has a reflecting plate of the present invention, adopts the stereogram of bipyramid radiant element as the structure of radiant element.
The flat plane antenna that has reflecting plate 3 of embodiments of the present invention as shown in the drawing, the reflecting plate 31 that is configured in the rear Face to face by bipyramid radiant element 30, with bipyramid radiant element 30 constitutes.Bipyramid radiant element 30 is processing metal plates and to form 2 triangles tabular, and as shown in figure 20, a summit of the element that 2 triangles are tabular is opposed in same plane.The summit of relative element separately is as distributing point 30a.Reflecting plate 31 relatively bends to approximate right angle to the both sides of the metallic plate of rectangle and forms, as shown in figure 20 by constituting in the face of the face portion 31a of bipyramid radiant element 30 and and the sidepiece 31b that forms bent at two side direction bipyramid radiant elements, 30 lateral bendings of face portion 31a.And the height of the bipyramid radiant element 30 that the height of reflecting plate 31 and triangle are tabular is roughly the same.
In the flat plane antenna 3 that so has reflecting plate, because the both sides of reflecting plate 31 are towards bipyramid radiant element 30 lateral bending songs, so when the wavelength of the centre frequency of UHF frequency band is λ c, the interval of bipyramid radiant element 30 and reflecting plate 31 can constriction to about 0.06 λ c.And the interval of the front-end edge of the lateral margin of bipyramid radiant element 30 and sidepiece 31b can reach approximately smaller or equal to 0.06 λ c.So, even if adopted the flat plane antenna that has reflecting plate 3 of bipyramid radiant element 30, also can become the short small-sized flat plane antenna that has reflecting plate of depth, also can become the antenna of in the frequency band of the received terrestrial digital broadcasting of being with as UHF, fully working.
Then, Figure 21 is illustrated in the flat plane antenna that has a reflecting plate of the present invention, adopts the stereogram of ring radiant element as the structure of radiant element.
The flat plane antenna that has reflecting plate 4 of embodiments of the present invention as shown in the drawing, the reflecting plate 41 that is configured in the rear Face to face by ring radiant element 40, with ring radiant element 40 constitutes.Ring radiant element 40 is processing metal plates and form the ring-type of rectangle of 1 circle, and as shown in figure 21, the initiating terminal of the ring-type of rectangle and clearing end are as distributing point 40a.Reflecting plate 41 relatively bends to approximate right angle to the both sides of the metallic plate of rectangle and forms, as shown in figure 21 by constituting in the face of the face portion 41a of ring radiant element 40 and and the sidepiece 41b that forms bent at two lateral rings radiant elements, 40 lateral bendings of face portion 41a.And the height of the ring radiant element 40 of the height of reflecting plate 41 and rectangle is roughly the same.
In the flat plane antenna 4 that so has reflecting plate, because the both sides of reflecting plate 41 are towards ring radiant element 40 lateral bending songs, so when the wavelength of the centre frequency of UHF frequency band is λ c, the interval of ring radiant element 40 and reflecting plate 41 can constriction to about 0.06 λ c.And the interval of the lateral margin of ring radiant element 40 and the front-end edge of sidepiece 41b can reach approximately smaller or equal to 0.06 λ c.So, even if adopted the flat plane antenna that has reflecting plate 4 of ring radiant element 40, also can become the short small-sized flat plane antenna that has reflecting plate of depth, also can become the antenna of in the frequency band of the received terrestrial digital broadcasting of being with as UHF, fully working.In addition, ring radiant element 40 also can be circular or oval-shaped ring radiant element.
Then, Figure 22 is illustrated in the flat plane antenna that has a reflecting plate of the present invention, adopts the stereogram of dipole radiating elements as the structure of radiant element.
The flat plane antenna that has reflecting plate 5 of embodiments of the present invention as shown in the drawing, the reflecting plate 51 that is configured in the rear Face to face by dipole radiating elements 50, with dipole radiating elements 50 constitutes.Dipole radiating elements 50 is processing metal plates, the two ends general curved is met at right angles and form, and as shown in figure 22, central portion is as distributing point 50a.Reflecting plate 51 relatively bends to approximate right angle to the both sides of the metallic plate of rectangle and forms, as shown in figure 22, by constituting in the face of the face portion 51a of the dipole radiating elements 50 of bending two ends and and the sidepiece 51b that forms bent at two side direction dipole radiating elements, 50 lateral bendings of face portion 51a.And the height of the height of reflecting plate 51 and the dipole radiating elements of bending two ends 50 is roughly the same.
In the flat plane antenna 5 that so has reflecting plate, because the both sides of reflecting plate 51 are towards dipole radiating elements 50 lateral bending songs, so when the wavelength of the centre frequency of UHF frequency band is λ c, the interval of dipole radiating elements 50 and reflecting plate 51 can constriction to about 0.06 λ c.And the interval of the front-end edge of the lateral margin of dipole radiating elements 50 and sidepiece 51b can reach approximately smaller or equal to 0.06 λ c.So, even if adopted the flat plane antenna that has reflecting plate 5 of dipole radiating elements 50, also can become the short small-sized flat plane antenna that has reflecting plate of depth, also can become the antenna of in the frequency band of the received terrestrial digital broadcasting of being with as UHF, fully working.In addition, dipole radiating elements 50 both can be to upside also lateral bending song downwards.
Then, Figure 23 is illustrated in the flat plane antenna that has a reflecting plate of the present invention, adopts the stereogram of stacked dipole radiating elements as the structure of radiant element.
The flat plane antenna that has reflecting plate 6 of embodiments of the present invention as shown in the drawing is made of the reflecting plate 61 that the 1st dipole radiating elements 60a and the 2nd dipole radiating elements 60c is laminated into two-layer radiant element, be configured in the rear Face to face with stacked dipole radiating elements 60a, 60c.Dipole radiating elements 60a, 60c respectively the processing metal plate, make two ends relatively general curved meet at right angles and form, as shown in figure 23, central portion is as distributing point 60b, 60d.Reflecting plate 61 relatively bends to approximate right angle to the both sides of the metallic plate of rectangle and forms, as shown in figure 23, by constituting in the face of the face portion 61a of the face of dipole radiating elements 60a, the 60c of bending two ends and and the sidepiece 61b that forms bent at two side direction dipole radiating elements, 60 lateral bendings of face portion 61a.And, the height of reflecting plate 61 and bending two ends and the height of stacked dipole radiating elements 60a, 60c is roughly the same.
In the flat plane antenna 6 that so has reflecting plate, because the both sides of reflecting plate 61 are towards stacked dipole radiating elements 60a, 60c lateral bending song, so when the wavelength of the centre frequency of UHF frequency band is λ c, stacked dipole radiating elements 60a, the 60c and the interval of reflecting plate 61 can constriction to about 0.06 λ c.And the interval of the lateral margin of stacked dipole radiating elements 60a, 60c and the front-end edge of sidepiece 61b can reach approximately smaller or equal to 0.06 λ c.So, even if adopted the flat plane antenna that has reflecting plate 6 of stacked dipole radiating elements 60a, 60c, also can become the short small-sized flat plane antenna that has reflecting plate of depth, also can become the antenna of in the frequency band of the received terrestrial digital broadcasting of being with as UHF, fully working.In addition, can form the make progress small-sized flat plane antenna that has reflecting plate 6 of lateral bending song of the downward lateral bending song of the 1st dipole radiating elements 60a, the 2nd dipole radiating elements 60c.And, also can stacked 3 layers or more multi-layered dipole radiating elements.
The structure example of other of the reflecting plate in above explanation has been represented in Figure 24～29 the flat plane antenna that has a reflecting plate of the present invention.
Figure 24 is the stereogram of the 1st structure in other structure example of expression reflecting plate, and Figure 25 is the vertical view of its structure.
As Figure 24, reflecting plate 71 shown in Figure 25 is that processing metal is made essentially rectangular, form towards the face portion 71a of radiant element EL and in the both sides of face portion 71a towards the bend 71c of radiant element EL with obtuse angle.The leading section of bend 71c, generally perpendicularly crooked with respect to face portion 71a, form sidepiece 71b respectively.Radiant element EL is any of radiant element of above explanation.In the flat plane antenna that has reflecting plate with this reflecting plate 71 and radiant element EL, because the sidepiece 71b of the both sides of reflecting plate 71 is towards radiant element EL lateral bending song, so when the wavelength of the centre frequency of UHF frequency band was λ c, about 0.06 λ c can constriction be arrived in the interval of radiant element EL and reflecting plate 71.And the interval of the front-end edge of the lateral margin of radiant element EL and sidepiece 71b can reach approximately smaller or equal to 0.06 λ c.So, can form the short small-sized flat plane antenna that has reflecting plate of depth, also can become the antenna of in the frequency band of the received terrestrial digital broadcasting of being with as UHF, fully working.
Below, Figure 26 is the stereogram of the 2nd structure in other structure example of expression reflecting plate, Figure 27 is the vertical view of its structure.
As Figure 26, reflecting plate 81 shown in Figure 27 is that processing metal is made essentially rectangular, and with obtuse angle, section forms triangle as shown in figure 27 in substantial middle.So, reflecting plate 81 is made of the 1st bend 81a and the 2nd bend 82b, relatively disposes radiant element EL with reflecting plate 81.At this moment, the ora terminalis of the 1st bend 81a and the 2nd bend 82b is configured to be close with radiant element EL.Radiant element EL is any of radiant element of above explanation.In the flat plane antenna that has reflecting plate with this reflecting plate 81 and radiant element EL, because the 1st bend 81a of reflecting plate 81 and the ora terminalis of the 2nd bend 82b are configured to be close with radiant element EL, so when the wavelength of the centre frequency of UHF frequency band was λ c, the interval of the ora terminalis of the lateral margin of radiant element EL and the 1st bend 81a and the 2nd bend 82b can reach approximately smaller or equal to 0.06 λ c.So, can form the short small-sized flat plane antenna that has reflecting plate of depth, also can become the antenna of in the frequency band of the received terrestrial digital broadcasting of being with as UHF, fully working.
Below, Figure 28 is the stereogram of the 3rd structure in other structure example of expression reflecting plate, Figure 29 is the vertical view of its structure.
As Figure 28, reflecting plate 91 shown in Figure 29 is that processing metal is made essentially rectangular, form face portion 91a towards radiant element EL, curved in the both sides of face portion 91a generally perpendicularly crooked (R portion), form sidepiece 91b respectively.Radiant element EL is any of radiant element of above explanation.In the flat plane antenna that has reflecting plate with this reflecting plate 91 and radiant element EL, because the sidepiece 91b of the both sides of reflecting plate 91 is towards radiant element EL lateral bending song, so when the wavelength of the centre frequency of UHF frequency band was λ c, about 0.06 λ c can constriction be arrived in the interval of radiant element EL and reflecting plate 91.And the interval of the front-end edge of the lateral margin of radiant element EL and sidepiece 91b can reach approximately smaller or equal to 0.06 λ c.So, can form the short small-sized flat plane antenna that has reflecting plate of depth, also can become the antenna of in the frequency band of the received terrestrial digital broadcasting of being with as UHF, fully working.
The above flat plane antenna that has reflecting plate of Shuo Ming embodiments of the present invention 1 and execution mode 2, last following wide than other limits form broad, but be not limited to this, also can be the wide ratio broad that all forms on all limits.And, size about the flat plane antenna that has reflecting plate of embodiments of the present invention 1 and execution mode 2, its size or size range are an example, are not limited to this size, even if deviation is to a certain extent arranged on the size, also can carry out work as antenna.Some deterioration just can become on the electrical characteristics.In the present invention, the both sides of reflecting plate are topmost characteristics to radiant element lateral bending song, and the size of each several part is not a key property.
In addition, Figure 20～radiant element that has the flat plane antenna of reflecting plate of the present invention shown in Figure 23 forms tabular, but is not limited to this, also can form bar-shaped.
In addition, the flat plane antenna that has reflecting plate that receives received terrestrial digital broadcasting more than has been described in the explanation, but the present invention is not limited to this, also can be applicable to reception, sends the flat plane antenna that has reflecting plate that UHF is with.
Claims (10)
1. flat plane antenna that has reflecting plate, its characteristic is to have:
Radiant element;
With described radiant element in the face of leave regulation the interval be provided with, both sides are to the plane reflecting plate of described radiant element lateral bending song;
When the wavelength of the centre frequency of working band was λ, the interval constriction of the described regulation between described radiant element and the described reflecting plate was to about 0.06 λ.
2. the flat plane antenna that has reflecting plate according to claim 1, its characteristic are, the interval of the front-end edge of the described sidepiece of the edge of described radiant element and the bending of described reflecting plate is less than or equal to the interval of described regulation.
3. the flat plane antenna that has reflecting plate according to claim 1, its characteristic is, described radiant element is any one in dipole radiating elements, stacked dipole radiating elements, bipyramid radiant element, ring radiant element, triangle dicyclo radiant element or the rectangle dicyclo radiant element.
4. the flat plane antenna that has reflecting plate according to claim 1, its characteristic be, and between the described both sides of the described reflecting plate faced of described radiant element, with the obtuse angle to described radiant element bending.
5. flat plane antenna that has reflecting plate, its characteristic is to have:
Radiant element;
With described radiant element in the face of the interval that ground leaves regulation is provided with, substantial middle sentence the obtuse angle to described radiant element bending, the approaching described radiant element of two ora terminalis and the plane reflecting plate that is provided with.
6. flat plane antenna that has reflecting plate, its characteristic be,
By by following on having at least and should on following width form on the plane radiant element that constitutes than the dicyclo element of other hem widths, the interval of leaving regulation with described radiant element Face to face is provided with the plane reflecting plate of both sides to described radiant element lateral bending song
When the wavelength of the centre frequency of working band is λ, can be the interval of the described regulation between described radiant element and the described reflecting plate near being configured to about 0.06 λ.
7. the flat plane antenna that has reflecting plate according to claim 6, its characteristic are, the interval of the front-end edge of the described sidepiece of the lateral margin of described radiant element and the bending of described reflecting plate is less than or equal to the interval of described regulation.
8. the flat plane antenna that has reflecting plate according to claim 6, its characteristic are that described radiant element is made of triangle dicyclo element or rectangle dicyclo element, and the following width of going up of described radiant element is about 0.06 λ～0.1 λ.
9. the flat plane antenna that has reflecting plate according to claim 6, its characteristic be, and between the described both sides of the described reflecting plate faced of described radiant element, with the obtuse angle to described radiant element bending.
10. flat plane antenna that has reflecting plate, its characteristic is to have:
By have at least go up following and should go up following width form the plane radiant element that constitutes than the dicyclo element of other hem widths;
With described radiant element in the face of leave the interval of regulation and the plane reflecting plate that is provided with;
The substantial middle of described reflecting plate is sentenced the obtuse angle to described radiant element bending, and two ora terminalis are configured near described radiant element.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP286502/2003 | 2003-08-05 | ||
| JP2003286502 | 2003-08-05 | ||
| JP151456/2004 | 2004-05-21 |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009101705193A Division CN101697382B (en) | 2003-08-05 | 2004-06-22 | Reflecting plate-equipped planar antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1701466A true CN1701466A (en) | 2005-11-23 |
Family
ID=35476779
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200480001003 Pending CN1701466A (en) | 2003-08-05 | 2004-06-22 | Reflecting plate-equipped planar antenna |
Country Status (2)
| Country | Link |
|---|---|
| JP (3) | JP4598138B2 (en) |
| CN (1) | CN1701466A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101213707B (en) * | 2005-06-30 | 2012-09-19 | 八木天线株式会社 | Antenna |
| CN103326114A (en) * | 2012-09-24 | 2013-09-25 | 佛山中元创新实业有限公司 | Printing type broadband high-gain antenna |
| CN105514590A (en) * | 2016-02-19 | 2016-04-20 | 广东中元创新科技有限公司 | High-gain dual-annular element antenna |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10915164B2 (en) | 2018-09-05 | 2021-02-09 | Magic Leap, Inc. | Directed emitter/sensor for electromagnetic tracking in augmented reality systems |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04200003A (en) * | 1990-11-29 | 1992-07-21 | Fujitsu Ten Ltd | On-vehicle roof flush mounted antenna |
| JPH11330848A (en) * | 1998-05-20 | 1999-11-30 | Ntt Mobil Commun Network Inc | Base station antenna device |
| JP4136178B2 (en) * | 1999-04-22 | 2008-08-20 | マスプロ電工株式会社 | Twin loop antenna |
| JP2001127534A (en) * | 1999-10-27 | 2001-05-11 | Furukawa Electric Co Ltd:The | Transmission antenna device and broadcast tower |
| US6281858B1 (en) * | 1999-11-22 | 2001-08-28 | Trw Inc. | High performance, directional cellular band antenna |
| JP3623714B2 (en) * | 2000-03-30 | 2005-02-23 | 株式会社エヌ・ティ・ティ・ドコモ | Broadband antenna and array antenna device |
| JP3725415B2 (en) * | 2000-10-19 | 2005-12-14 | 三菱電機株式会社 | Diversity antenna device |
| JP2002198723A (en) * | 2000-11-02 | 2002-07-12 | Ace Technol Co Ltd | Wideband directional antenna |
| JP2003110329A (en) * | 2001-07-25 | 2003-04-11 | Matsushita Electric Ind Co Ltd | Built-in antenna device |
| JP2003110354A (en) * | 2001-09-27 | 2003-04-11 | Furukawa Electric Co Ltd:The | Relay station, and transmitting and receiving antennas used for the same relay station |
-
2004
- 2004-06-22 CN CN 200480001003 patent/CN1701466A/en active Pending
-
2009
- 2009-08-10 JP JP2009185551A patent/JP4598138B2/en not_active Expired - Lifetime
-
2010
- 2010-07-29 JP JP2010170196A patent/JP4782883B2/en not_active Expired - Lifetime
- 2010-07-29 JP JP2010170195A patent/JP4782882B2/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101213707B (en) * | 2005-06-30 | 2012-09-19 | 八木天线株式会社 | Antenna |
| CN103326114A (en) * | 2012-09-24 | 2013-09-25 | 佛山中元创新实业有限公司 | Printing type broadband high-gain antenna |
| CN103326114B (en) * | 2012-09-24 | 2015-07-29 | 佛山中元创新实业有限公司 | A kind of printing-type wideband high-gain aerial |
| CN105514590A (en) * | 2016-02-19 | 2016-04-20 | 广东中元创新科技有限公司 | High-gain dual-annular element antenna |
| CN105514590B (en) * | 2016-02-19 | 2018-08-31 | 广东中元创新科技有限公司 | High-gain Crossed Circle element antenna |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2010239669A (en) | 2010-10-21 |
| JP4782883B2 (en) | 2011-09-28 |
| JP2010268511A (en) | 2010-11-25 |
| JP2009261023A (en) | 2009-11-05 |
| JP4782882B2 (en) | 2011-09-28 |
| JP4598138B2 (en) | 2010-12-15 |
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