CN105576355A - Helical antenna - Google Patents
Helical antenna Download PDFInfo
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- CN105576355A CN105576355A CN201610005295.0A CN201610005295A CN105576355A CN 105576355 A CN105576355 A CN 105576355A CN 201610005295 A CN201610005295 A CN 201610005295A CN 105576355 A CN105576355 A CN 105576355A
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- spiral arm
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
Abstract
The invention provides a helical antenna, wherein the helical antenna is provided with an antenna part and a base plate part; the helical antenna can realize multi-band operation under more than two frequency bands that are quite different in magnitude; and the two surfaces of the base plate are both provided with circuits. Therefore, compared with the conventional circuit board having circuits only on one surface, the area of the circuit board is greatly decreased, so that the volume of the helical antenna is further decreased, and the applicability of the helical antenna in small-sized terminal equipment is improved.
Description
Technical field
The invention belongs to antenna technical field, relate to a kind of helical antenna, particularly relate to a kind of helical antenna of miniaturization, be specifically related to a kind of antenna part of helical antenna and comprise the helical antenna of antenna part.
Background technology
Along with the development of satellite navigation system, particularly along with China's Beidou satellite navigation system development and become better and approaching perfection day by day, increasing application is obtained in military and civilian field based on the navigator fix of big-dipper satellite and mobile communication, such as transport monitoring, hydrologic monitoring, the anti-flood of flood control, and provide the integrated services such as location, communication and time service, thus serve more and more important effect in the Working Life of people.
In Satellite Navigation Technique and communication technology of satellite, as reception and the transmitting antenna of satellite-signal, helical antenna, particularly four-arm spiral antenna (QuadrifilarHelixAntenna, QHA) are widely used in the technical field of radio such as satellite communication and global positioning system.
But existing four-arm spiral antenna belongs to the resonant aerial of narrow bandwidth, usually can only be operated in a frequency range, want the multiband work realizing wideband or two or more frequency range to be very difficult.
In addition, in the prior art, the circuit board normally one side configuration circuit that helical antenna is equipped with, causes the area of circuit board comparatively large, and then causes the volume of helical antenna itself comparatively large, have impact on the application of helical antenna in Miniature Terminal equipment.
Summary of the invention
For solving the problems of the technologies described above, the invention provides a kind of antenna part of helical antenna, this antenna part can realize the multiband work of frequency two or more frequency range relatively far apart, thus be applicable to multiband requirements of one's work in such as satellite navigation system or mobile communication system simultaneously, substantially increase the applicability of helical antenna.
The invention provides a kind of antenna part of helical antenna, comprise spiral arm, spiral arm comprises: the first spiral arm; Second spiral arm, the first spiral arm and the second spiral arm interval are arranged, and the length of the first spiral arm is greater than the length of the second spiral arm; With triple helical arm, one end of triple helical arm is connected with one end of the first spiral arm, and the other end of triple helical arm is connected with one end of the second spiral arm; And the 4th spiral arm, one end of the 4th spiral arm is connected with triple helical arm, and the other end of the 4th spiral arm is earth terminal; With the 5th spiral arm, one end of the 5th spiral arm is connected with triple helical arm, and the other end of the 5th spiral arm is connected with to the spiral arm feed end of spiral arm feed.
The antenna part of helical antenna provided according to an aspect of the present invention, antenna part is cylindric or tubular shape, and spiral arm is arranged on the outer surface of antenna part.
The antenna part of helical antenna provided according to an aspect of the present invention, the first spiral arm, the second spiral arm, the 4th spiral arm are identical with the lift angle of the 5th spiral arm.
The antenna part of helical antenna provided according to an aspect of the present invention, when the outer surface of antenna part is the state of planar development, the first spiral arm, the second spiral arm, the 4th spiral arm and the 5th spiral arm are parallel to each other.
The antenna part of helical antenna provided according to an aspect of the present invention, triple helical arm is perpendicular to the central axis of the cylindrical outer shape of antenna part.
The antenna part of helical antenna provided according to an aspect of the present invention, the first spiral arm and the second spiral arm portion are positioned at the side of triple helical arm, and the 4th spiral arm and the 5th spiral arm portion are positioned at the opposite side of triple helical arm.
There is such structure, by the first spiral arm of utilizing length not identical and the second spiral arm, the needs of high and low two band operation in such as satellite navigation system or mobile communication system can be applicable to simultaneously, substantially increase the applicability of helical antenna.
The antenna part of helical antenna provided according to an aspect of the present invention, in the first spiral arm, the second spiral arm, the 4th spiral arm and the 5th spiral arm, two adjacent spiral arms are equal in the circumferentially spacing of the cylindrical outer shape of antenna part, and are more than or equal to predetermined value.
The antenna part of helical antenna provided according to an aspect of the present invention, time under antenna part is in running order, in first spiral arm, the second spiral arm, the 4th spiral arm and the 5th spiral arm, the bearing of trend of each spiral arm becomes left hand helix relation with the greatest irradiation direction of antenna part.
The antenna part of helical antenna provided according to an aspect of the present invention, when the outer surface of antenna part is the state of planar development, in first spiral arm, the second spiral arm, the 4th spiral arm and the 5th spiral arm, the bearing of trend of each spiral arm relative to the angle of the lower limb of antenna part between 56 ° ~ 66 °.
There is such structure, by certain way, each spiral arm is set, can make that the signal of telecommunication between each spiral arm is unlikely to be disturbed, and effectively can receive for the feature of satellite navigation signals (right-handed circular polarization electromagnetic wave).
The antenna part of helical antenna provided according to an aspect of the present invention, the 5th spiral arm is on the line stretcher of the second spiral arm.
The antenna part of helical antenna provided according to an aspect of the present invention, antenna part comprises further: at least one the 6th spiral arm, one end of each 6th spiral arm is connected with triple helical arm, between the first spiral arm and the second spiral arm, and under the state that the outer surface of antenna part is planar development, each 6th spiral arm all parallels with the first spiral arm and the second spiral arm; The length of each 6th spiral arm is different, and is different from the length of the first spiral arm or the second spiral arm.
The antenna part of helical antenna provided according to an aspect of the present invention, in the first spiral arm, the second spiral arm, the 4th spiral arm, the 5th spiral arm and at least one the 6th spiral arm, two adjacent spiral arms are equal in the circumferentially spacing of the cylindrical outer shape of antenna part, and are more than or equal to predetermined value.
There is such structure, by arranging length at least one six spiral arm all not identical with the first spiral arm and the second spiral arm, the needs of high and low two band operation in such as satellite navigation system or mobile communication system can not only be applicable to simultaneously, also make helical antenna can be applicable to more multiband, further increase the applicability of helical antenna.
The antenna part of helical antenna provided according to an aspect of the present invention, antenna part is curled into by medium substrate, and the first spiral arm, the second spiral arm, triple helical arm, the 4th spiral arm, the 5th spiral arm and at least one the 6th spiral arm portion are respectively the metal tape be arranged on medium substrate outer surface.
The antenna part of helical antenna provided according to an aspect of the present invention, medium substrate is flexible thin medium substrate.
The antenna part of helical antenna provided according to an aspect of the present invention, the width of every strip metal band is 0.7 ~ 1.2mm, and thickness is 0.015 ~ 0.045mm.
The antenna part of helical antenna provided according to an aspect of the present invention, antenna part is formed by cylindric dielectric material, and the first spiral arm, the second spiral arm, triple helical arm, the 4th spiral arm, the 5th spiral arm and at least one the 6th spiral arm portion are respectively the metal tape be arranged on cylindric or tubular dielectric material outer surface.
The antenna part of helical antenna provided according to an aspect of the present invention, the width of every strip metal band is 0.7 ~ 1.2mm, and thickness is 0.015 ~ 0.045mm.
The antenna part of helical antenna provided according to an aspect of the present invention, antenna part comprises four spiral arm.
Further, the present invention also provides a kind of helical antenna comprising above-mentioned antenna part, the baseplate part of helical antenna is by redesigning, circuit is provided with on two sides, thus with traditional only compared with the circuit board of a cloth circuits, greatly reduce the area of circuit board, and then greatly reduce the volume of helical antenna, substantially increase the applicability of helical antenna in Miniature Terminal equipment.
The invention provides a kind of helical antenna, helical antenna comprises antenna part as above, and comprises further: baseplate part, and baseplate part is positioned at one end of antenna part, and the normal direction of baseplate part is perpendicular to the central axis of the cylindrical outer shape of antenna part; And the both side surface of baseplate part is respectively arranged with circuit corresponding with the first spiral arm and the second spiral arm respectively.
Helical antenna provided according to an aspect of the present invention, each circuit includes corresponding low noise amplifier and filter.
Helical antenna provided according to an aspect of the present invention, the diameter of the width of baseplate part and the cylindrical outer shape of antenna part is roughly equal.
Further, the present invention also provides a kind of helical antenna, and helical antenna comprises antenna part as above, and comprises further: baseplate part, baseplate part is positioned at one end of antenna part, and the normal direction of baseplate part is perpendicular to the central axis of the cylindrical outer shape of antenna part; And the both side surface of baseplate part is respectively arranged with circuit corresponding with the first spiral arm and the second spiral arm respectively; And at least one side surface of baseplate part is also provided with and each at least one circuit one to one at least one the 6th spiral arm.
There is such structure, by arranging the circuit corresponding to the first spiral arm and the second spiral arm in the both side surface of baseplate part respectively, greatly reduce baseplate part area while can processing at the signal received the first spiral arm and the second spiral arm, and then reduce the volume of whole helical antenna.Further, by arranging low noise amplifier and filter in circuit, effectively can carry out amplification and filtering interfering to the such as satellite navigation signals received further, thus improving the quality of reception of helical antenna.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, below the accompanying drawing used required in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the application, can not be interpreted as that it is to any restriction of formation of the present invention.For those of ordinary skill in the art, other embodiments and the corresponding accompanying drawing of other embodiments can also be obtained according to these accompanying drawings.
Fig. 1 is the schematic stereogram of the helical antenna according to preferred embodiment of the present invention;
Fig. 2 is the schematic view that the outer surface of the antenna part of helical antenna according to preferred embodiment of the present invention expands into flat state;
Fig. 3 is the schematic view of the spiral arm of the antenna part of helical antenna according to preferred embodiment of the present invention;
Fig. 4 is the schematic view of the spiral arm of the antenna part of helical antenna according to another embodiment of the invention.
Embodiment
Below in conjunction with accompanying drawing, the technical scheme of more than one embodiment of the present invention is described.Obviously, described embodiment is only the application's part execution mode, instead of whole execution modes.It should be noted that, based on these embodiments in the present invention, the every other embodiment that those of ordinary skill in the art obtain, all belongs to the scope of the application's protection.
In hereafter described embodiments of the invention, with reference to four-arm spiral antenna conventional in satellite positioning device and satellite communication apparatus, the present invention will be described, those skilled in the art can know, this is not construed as limiting the present invention, and concept of the present invention, thought and design can apply to the helical antenna of other kinds.
Fig. 1 is the schematic stereogram of the helical antenna according to preferred embodiment of the present invention.Fig. 2 is the schematic view expanding into flat state according to the outer surface of the antenna part 1 of the helical antenna of preferred embodiment of the present invention.Fig. 3 is the schematic view of the spiral arm of antenna part 1 according to the helical antenna of preferred embodiment of the present invention.As shown in Figures 1 to 3, according to the antenna part 1 of helical antenna provided by the invention, comprise spiral arm 10, spiral arm 10 comprises: the first spiral arm 11; Second spiral arm 12, first spiral arm 11 and the second spiral arm 12 interval are arranged, and the length of the first spiral arm 11 is greater than the length of the second spiral arm 12.Further, one end that spiral arm 10 also comprises triple helical arm 13, the triple helical arm 13 is connected with one end of the first spiral arm 11, and the other end of triple helical arm 13 is connected with one end of the second spiral arm 12.In addition, one end that spire 10 also comprises the 4th spiral arm 14 and the 5th spiral arm the 15, four spiral arm 14 is connected with triple helical arm 13, and the other end of the 4th spiral arm 14 is earth terminal; One end of 5th spiral arm 15 is connected with triple helical arm 13, and the other end of the 5th spiral arm 15 is connected with to the spiral arm feed end (not shown) of spiral arm 10 feed.In this article, if do not have specified otherwise, term " connection " generally refers to electrical connection.Further, in the preferred embodiment, helical antenna is four-arm spiral antenna, four-arm spiral antenna comprises 4 spiral arm 10, and the structural similarity of 4 spiral arm 10, for for purpose of brevity, only carry out marking to a spiral arm 10 in the accompanying drawings and illustrate, the explanation of other spiral arm 10 is omitted.
Further, as shown in Figure 1, the antenna part 1 of the helical antenna that preferred embodiment according to the present invention provides is in cylindrical outer shape, and spiral arm 10 is arranged on the outer surface of antenna part 1.Further, as shown in Figure 1, in each spiral arm 10 that the outer surface of the antenna part 1 provided according to present pre-ferred embodiments is arranged, the first spiral arm 11, second spiral arm 12, the 4th spiral arm 14 are identical with the lift angle of the 5th spiral arm 15.
Further, as shown in Figures 1 to 3, in the present invention, the other end of the first spiral arm 11 is free end.The other end of the second spiral arm 12 is free end.Here, free end refers to the one end be not electrically connected with other objects.
Further, as shown in Figures 2 and 3, when the outer surface of the antenna part 1 of the helical antenna provided according to present pre-ferred embodiments is the state of planar development, the first spiral arm 11, second spiral arm 12, the 4th spiral arm 14 and the 5th spiral arm 15 are parallel to each other.Further, such as shown in rear attached Figure of description 1 to 3, according to preferred embodiment of the present invention, triple helical arm 13 is perpendicular to the central axis of the cylindrical outer shape of antenna part 1.Further, as shown in rear attached Figure of description 2 and 3, the first spiral arm 11 of spiral arm 10 and the second spiral arm 12 are positioned at the side of triple helical arm 13, and the 4th spiral arm 14 and the 5th spiral arm 15 are positioned at the opposite side of triple helical arm 13.Further, in each spiral arm 10 of the antenna part 1 provided in preferred embodiment according to the present invention, in first spiral arm 11, second spiral arm 12, the 4th spiral arm 14 and the 5th spiral arm 15, two adjacent spiral arms are equal in the circumferentially spacing of the cylindrical outer shape of antenna part 1, and are more than or equal to predetermined value.In the present invention, should " predetermined value " kind of Received signal strength required for helical antenna determine.Such as, when helical antenna is applied to satellite navigation system, predetermined value can be 1/5 of the guide wavelength of satellite navigation signals.
There is such structure, by the first spiral arm 11 and the second spiral arm 12 utilizing length not identical, the needs of high and low two band operation in such as satellite navigation system or mobile communication system can be applicable to simultaneously, substantially increase the applicability of helical antenna.More specifically, the first radiant body is formed by the first spiral arm 11 and triple helical arm 13.First radiant body corresponds to a working frequency range.The second radiant body is formed by the second spiral arm 12 and triple helical arm 13.Second radiant body corresponds to another working frequency range.Thus spiral arm 10 can have two working frequency range simultaneously.In addition, by the both sides making the first spiral arm 11 and the second spiral arm 12 and the 4th spiral arm 14 and the 5th spiral arm 15 lay respectively at triple helical arm 13, can reduce the signal disturbing between each spiral arm, the interference between preventing due to spiral arm causes the precision of helical antenna to reduce.
In the preferred embodiment, in each spiral arm 10, the first spiral arm 11, second spiral arm 12, the 4th spiral arm 14 are identical with the lift angle of the 5th spiral arm 15.But the present invention is not limited to this, those skilled in the art according to actual design and can use needs, select arbitrarily the configuration relation of each spiral arm, cause the effect of helical antenna to reduce as long as can not produce signal disturbing between each spiral arm.In addition, in above-mentioned preferred embodiment, when the outer surface of antenna part 1 is the state of planar development, the first spiral arm 11, second spiral arm 12, the 4th spiral arm 14 and the 5th spiral arm 15 are parallel to each other.But the present invention is not limited to this, those skilled in the art according to actual design and can use needs, select arbitrarily the position relationship of each spiral arm, cause the effect of helical antenna to reduce as long as can not produce signal disturbing between each spiral arm.Further, in above-mentioned preferred embodiment, triple helical arm 13 is perpendicular to the central axis of the cylindrical outer shape of antenna part 1.But the present invention is not limited to this, those skilled in the art according to actual design and can use needs, the bearing of trend of any selection triple helical arm 13, as long as make above-mentioned first spiral arm 11, second spiral arm 12, the 4th spiral arm 14 be all connected with triple helical arm 13 with the 5th spiral arm 15, and can not cause producing signal disturbing between each spiral arm.
Further, as shown in rear attached Figure of description 1 to 3, the antenna part 1 of the helical antenna that preferred embodiment according to the present invention provides, time under antenna part 1 is in running order, first spiral arm 11, second spiral arm 12, in 4th spiral arm 14 and the 5th spiral arm 15, the bearing of trend (as shown in the arrow A in rear attached Figure of description 1 direction) of each spiral arm and the greatest irradiation direction of antenna part 1 are (namely, time under antenna part 1 is in running order, the direction of top is also pointed to the axis being parallel of cylindrical outer shape, as shown in the arrow B in rear attached Figure of description 1) become left hand helix relation.Further, in the preferred embodiment, when the outer surface of antenna part 1 is the state of planar development, in first spiral arm 11, second spiral arm 12, the 4th spiral arm 14 and the 5th spiral arm 15, the bearing of trend (as shown in the arrow A in rear attached Figure of description 3 direction) of each spiral arm relative to the angle [alpha] (shown in rear attached Figure of description 2) of the lower limb 17 of antenna part 1 between 56 ° ~ 66 °.More preferably, angle [alpha] is between 60 ° ~ 64 °.More preferably, angle [alpha] is between 61 ° ~ 63 °.Such as, angle [alpha] is approximately 62 °.
There is such structure, by arranging each spiral arm in a specific way, can make that the signal of telecommunication between each spiral arm is unlikely to be disturbed, and signal receiving performance can be improved for the feature of satellite navigation signals (right-handed circular polarization electromagnetic wave).
Further, as shown in rear attached Figure of description 2 to 3, in the antenna part 1 of the helical antenna that preferred embodiment according to the present invention provides, the 5th spiral arm 15 is on the line stretcher of the second spiral arm 12.There is such structure, can make that the structure of spiral arm 10 is compacter, attractive in appearance, easy making process.
In above-mentioned preferred embodiment, the antenna part 1 of helical antenna comprises different first spiral arm 11 and the second spiral arm 12 of length, to be applicable to two different frequency ranges.But the present invention is not limited to this.
As shown in rear attached Figure of description 4, the antenna part 1 of helical antenna provided according to another embodiment of the present invention comprises further: at least one the 6th spiral arm 16, one end of each 6th spiral arm 16 is connected with triple helical arm 13, between the first spiral arm 11 and the second spiral arm 12.Further, the other end of each 6th spiral arm 16 is free end.As mentioned above, " free end " here refers to the one end be not electrically connected with other objects.Further, as shown in rear attached Figure of description 4, under the state that the outer surface of antenna part 1 is planar development, each 6th spiral arm 16 is all parallel with the second spiral arm 12 with the first spiral arm 11.Further, the length of each 6th spiral arm 16 is different, and is different from the length of the first spiral arm 11 or the second spiral arm 12.
Further, according to the antenna part 1 of helical antenna provided by the present invention, in the first spiral arm 11, second spiral arm 12, the 4th spiral arm 14, the 5th spiral arm 15 and at least one the 6th spiral arm 16, two adjacent spiral arms are equal in the circumferentially spacing of the cylindrical outer shape of antenna part, and are more than or equal to predetermined value.In the present invention, should " predetermined value " kind of Received signal strength required for helical antenna determine.Such as, when helical antenna is applied to satellite navigation system, predetermined value can be 1/5 of the guide wavelength of satellite navigation signals.
Have such structure, by arranging the first different spiral arm 11 and the second spiral arm 12 of length, this helical antenna can be applicable to the needs of high and low two band operation in such as satellite navigation system or mobile communication system simultaneously; Further, by arranging length at least one six spiral arm 16 all not identical with the first spiral arm 11 and the second spiral arm 12, also making helical antenna can be applicable to more multiband, further increasing the applicability of helical antenna.
Further, according to the antenna part 1 of helical antenna provided by the present invention, this antenna part 1 is curled into by medium substrate 18, and the first spiral arm 11, second spiral arm 12, triple helical arm 13, the 4th spiral arm 14, the 5th spiral arm 15 and at least one the 6th spiral arm 16 are respectively the metal tape be arranged on medium substrate 18 outer surface.Further, according to the antenna part 1 of the helical antenna that present pre-ferred embodiments provides, the width of the every strip metal band in spiral arm 10 is 0.7 ~ 1.2mm, and thickness is 0.015 ~ 0.045mm.More preferably, the width of every strip metal band is 0.9 ~ 1.1mm, and thickness is 0.025 ~ 0.04mm.More preferably, the width of every strip metal band is 0.9 ~ 1.0mm, and thickness is 0.025 ~ 0.035mm.Such as, the width of every strip metal band is about 1.0mm thickness is about 0.035mm.
In more detail, as shown in Figures 1 to 3, in the preferred embodiment, antenna part 1 is curled into by medium substrate 18, and this medium substrate 18 can be made up of dielectric material.More preferably, medium substrate 18 adopts the material of high-k to make, and described material is such as but is not limited to plexiglas, plastics, pottery etc.The consideration of the aspect that is easy to get for handling ease, material, the material of medium substrate 18 can be pcb board (flexible circuit board or claim flexible printed circuit board).More preferably medium substrate 18 is flexible thin medium substrates 18.
But the present invention is not limited to this, those skilled in the art according to actual design and can use needs, select arbitrarily generation type or the material of antenna part 1.Such as, antenna part 1 also can be curled into by flexible media thin-film material.Even antenna part 1 can be formed by cylindric dielectric material, and the first spiral arm 11, second spiral arm 12, triple helical arm 13, the 4th spiral arm 14, the 5th spiral arm 15 and at least one the 6th spiral arm 16 are respectively the metal tape be arranged on cylindric dielectric material outer surface.In the case, the width of every strip metal band is 0.7 ~ 1.2mm, and thickness is 0.015 ~ 0.045mm.More preferably, the width of every strip metal band is 0.9 ~ 1.1mm, and thickness is 0.025 ~ 0.04mm.More preferably, the width of every strip metal band is 0.9 ~ 1.0mm, and thickness is 0.025 ~ 0.035mm.Such as, the width of every strip metal band is about 1.0mm thickness is about 0.035mm.
Further, although it is cylindrical outer shape that preferred embodiment of the present invention proposes antenna part 1, be not limited in this, to those skilled in the art, antenna part 1 can adopt the shape of any applicable making helical antenna, such as cylindrical, cylindrical shape, tubulose etc.
Further, spiral arm 10 moulding process that spiral arm 10 is commonly used by this area is formed on the outer surface of antenna part 1.Such as, when antenna part 1 is made up of flexible thin dielectric material, spiral arm 10 is printed on the substrate surface of flat expand state by typography.Then, form column by the thin dielectric material of rolled flexible thus obtain the cylindric antenna part that support spiral arm 10.Antenna part 1 compact conformation of structure like this, quality is light, and volume is little, and is easy to processing.
In addition, the present invention also provides a kind of helical antenna comprising above-mentioned antenna part, the baseplate part 2 of helical antenna is by redesigning, circuit is provided with on two sides, thus with traditional only compared with the circuit board of a cloth circuits, greatly reduce the area of circuit board, and then reduce the volume of helical antenna, improve the applicability of helical antenna in Miniature Terminal equipment.
In more detail, as shown in rear attached Figure of description 1, antenna part 1 as above is comprised according to helical antenna provided by the invention, and comprise baseplate part 2 further, this baseplate part 2 is arranged in one end (lower end as rear attached Figure of description 1) of antenna part 1, and the normal direction of baseplate part 2 (as shown in the arrow C in rear attached Figure of description 1) is perpendicular to the central axis (as shown in the single dotted broken line in rear attached Figure of description 1) of the cylindrical outer shape of antenna part 1.Further, the both side surface of baseplate part 2 is respectively arranged with circuit (not shown) corresponding with the first spiral arm 11 and the second spiral arm 12 respectively.
Further, according to helical antenna provided by the present invention, each circuit includes corresponding low noise amplifier and filter.In addition, according to preferred embodiment of the present invention, the diameter of the width of baseplate part 2 and the cylindrical outer shape of antenna part 1 is roughly equal.
There is such structure, by arranging the circuit corresponding to the first spiral arm 11 and the second spiral arm 12 in the both side surface of baseplate part 2 respectively, greatly reduce baseplate part area while can processing at the signal received the first spiral arm 11 and the second spiral arm 12, and then reduce the volume of whole helical antenna.Further, by arranging low noise amplifier and filter in circuit, effectively can carry out amplification and filtering interfering to the such as satellite navigation signals received further, thus improving the quality of reception of helical antenna.In this configuration, one in two circuit corresponds to high band, and another then corresponds to low-frequency range.
Further, in another embodiment of the invention, corresponding with at least one the 6th spiral arm 16, the both side surface of baseplate part 2 is not only respectively arranged with the circuit that the first spiral arm 11 respectively couples mutually with the second spiral arm 12; And at least one side surface of baseplate part 2 is also provided with and each at least one circuit one to one (not shown) at least one the 6th spiral arm 16.
Have such structure, the baseplate part that volume can be utilized to reduce 2 pairs of multi-band signals process, and further reduce the volume of baseplate part 2 and helical antenna, thus reduce the volume of terminal equipment.
Also it should be noted that, in this article, the such as relational terms of first and second grades and so on is only used for an entity or operation to separate with another entity or operating space, and not necessarily requires or imply the relation that there is any this reality between these entities or operation or sequentially.And, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thus make to comprise the process of a series of key element, method, article or equipment and not only comprise those key elements, but also comprise other key elements clearly do not listed, or also comprise by the intrinsic key element of this process, method, article or equipment.When not more restrictions, the key element limited by statement " comprising ... ", and be not precluded within process, method, article or the equipment comprising described key element and also there is other identical or equivalent elements.In addition, term " on ", D score, " top ", " end " etc. do not form absolute spatial relationship restriction, just a kind of relative concept.
Above a kind of helical antenna that the application provides is described in detail, apply specific embodiment herein to set forth the principle of the application and execution mode, the explanation of above embodiment is just for helping method and the inventive concept of understanding the application; Meanwhile, for one of ordinary skill in the art, according to the thought of the application, all will change in specific embodiments and applications, in sum, this description should not be construed as the restriction to the application.
Claims (10)
1. an antenna part for helical antenna, comprises spiral arm, it is characterized in that, described spiral arm comprises:
First spiral arm;
Second spiral arm, described first spiral arm and described second spiral arm interval are arranged, and the length of described first spiral arm is greater than the length of described second spiral arm;
Triple helical arm, one end of described triple helical arm is connected with one end of described first spiral arm, and the other end of described triple helical arm is connected with one end of described second spiral arm;
4th spiral arm, one end of described 4th spiral arm is connected with described triple helical arm, and the other end of described 4th spiral arm is earth terminal; With
5th spiral arm, one end of described 5th spiral arm is connected with described triple helical arm, and the other end of described 5th spiral arm is connected with to the spiral arm feed end of described spiral arm feed.
2. the antenna part of helical antenna as claimed in claim 1, is characterized in that,
Described antenna part is cylindrical outer shape, and described spiral arm is arranged on the outer surface of described antenna part.
3. the antenna part of helical antenna as claimed in claim 2, is characterized in that,
When the outer surface of described antenna part is the state of planar development, described first spiral arm, described second spiral arm, described 4th spiral arm and described 5th spiral arm are parallel to each other.
4. the antenna part of helical antenna as claimed in claim 3, is characterized in that,
In described first spiral arm, described second spiral arm, described 4th spiral arm and described 5th spiral arm, two adjacent spiral arms are equal in the circumferentially spacing of the cylindrical outer shape of described antenna part, and are more than or equal to predetermined value.
5. the antenna part of helical antenna as claimed in claim 4, is characterized in that,
Time under described antenna part is in running order, in described first spiral arm, described second spiral arm, described 4th spiral arm and described 5th spiral arm, the bearing of trend of each spiral arm becomes left hand helix relation with the greatest irradiation direction of described antenna part.
6. the antenna part of helical antenna as claimed in claim 5, is characterized in that,
When the outer surface of described antenna part is the state of planar development, in described first spiral arm, described second spiral arm, described 4th spiral arm and described 5th spiral arm, the bearing of trend of each spiral arm relative to the angle of the lower limb of described antenna part between 56 ° ~ 66 °.
7. the antenna part of helical antenna as claimed in claim 6, it is characterized in that, described antenna part comprises further:
At least one the 6th spiral arm, one end of each described 6th spiral arm is connected with described triple helical arm, between described first spiral arm and described second spiral arm, and under the state that the outer surface of described antenna part is planar development, each described 6th spiral arm all parallels with described first spiral arm and described second spiral arm; Wherein
The length of each described 6th spiral arm is different, and is different from the length of described first spiral arm or described second spiral arm.
8. the antenna part of the helical antenna according to any one of claim 1-7, is characterized in that,
Described antenna part is curled into by medium substrate, and described first spiral arm, described second spiral arm, described triple helical arm, described 4th spiral arm, described 5th spiral arm and the 6th spiral arm portion described at least one are respectively the metal tape be arranged on described medium substrate outer surface.
9. the antenna part of helical antenna as described in any of claims 8, is characterized in that,
Described antenna part comprises four described spiral arm.
10. a helical antenna, is characterized in that, comprises the antenna part according to any one of the claims 1-9, and comprises further:
Baseplate part, described baseplate part is positioned at one end of described antenna part, and the normal direction of described baseplate part is perpendicular to the central axis of the cylindrical outer shape of described antenna part; And
The both side surface of described baseplate part is respectively arranged with circuit corresponding with described first spiral arm and described second spiral arm respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610005295.0A CN105576355A (en) | 2016-01-05 | 2016-01-05 | Helical antenna |
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Cited By (6)
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| CN105977628A (en) * | 2016-06-25 | 2016-09-28 | 嘉兴佳利电子有限公司 | Miniature multi-band spiral navigation antenna |
| CN106532230A (en) * | 2016-12-30 | 2017-03-22 | 广州中海达卫星导航技术股份有限公司 | Helical antenna for unmanned aerial vehicle |
| CN107171059A (en) * | 2017-04-07 | 2017-09-15 | 深圳市景程信息科技有限公司 | Four-arm spiral antenna with circular polarization characteristics |
| CN107611590A (en) * | 2017-10-16 | 2018-01-19 | 福建福大北斗通信科技有限公司 | Compact dual-frequency satellite communication hand-held terminal antenna and its application method |
| CN112640212A (en) * | 2018-09-21 | 2021-04-09 | Hrl实验室有限责任公司 | Active broadband antenna |
| CN114069217A (en) * | 2022-01-05 | 2022-02-18 | 陕西海积信息科技有限公司 | Helical antenna and positioning system |
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| CN106532230A (en) * | 2016-12-30 | 2017-03-22 | 广州中海达卫星导航技术股份有限公司 | Helical antenna for unmanned aerial vehicle |
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| CN112640212B (en) * | 2018-09-21 | 2022-08-09 | Hrl实验室有限责任公司 | Active broadband antenna |
| CN114069217A (en) * | 2022-01-05 | 2022-02-18 | 陕西海积信息科技有限公司 | Helical antenna and positioning system |
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