CN211789448U

CN211789448U - Enhanced radio frequency front end device

Info

Publication number: CN211789448U
Application number: CN202020518472.7U
Authority: CN
Inventors: 张少林; 崔立成
Original assignee: Shenzhen Wave Technology Co Ltd
Current assignee: Shenzhen Wave Technology Co Ltd
Priority date: 2020-04-10
Filing date: 2020-04-10
Publication date: 2020-10-27
Anticipated expiration: 2030-04-10

Abstract

The application relates to a reinforced radio frequency front end device, which comprises a reinforced antenna device and a radio frequency transceiver device, wherein the reinforced antenna device comprises a substrate and two or more than two dual-polarized log-periodic antennas, and the radio frequency transceiver device comprises a filter, a circulator, a receiver and a transmitter. Above-mentioned strenghthened type radio frequency front end device adopts the cross structure to realize the dual polarization constitution of two single polarization antenna unit at first, has realized strenghthened type dual polarization log periodic antenna, reducible signal polarization loss, the gain that makes antenna device's horizontal vertical both directions is all good, secondly through constitute the antenna array setting with dual polarization log periodic antenna on the base plate, design strenghthened type antenna device for three-dimensional array structure of group, make strenghthened type antenna device can form the perpendicular wave beam, realize the receiving and dispatching of signal by radio frequency transceiver at last, thereby antenna whole gain has been improved.

Description

Enhanced radio frequency front end device

Technical Field

The application relates to the technical field of antenna communication, in particular to a reinforced radio frequency front-end device.

Background

An antenna is an indispensable important component of any radio communication system, and although the tasks to be performed by various types of radio devices are different, the roles of the antennas in the devices are basically the same. Any radio device transmits information by radio waves, and therefore must have a means of radiating or receiving electromagnetic waves.

The traditional antenna radio frequency front end mainly uses a single polarization antenna and also has an array antenna, but the antenna is mainly an array in the vertical direction, and the antenna structures are arranged in two dimensions, so that high gain is difficult to realize, the traditional antenna system has limited improvement on communication performance and poor gain effect.

SUMMERY OF THE UTILITY MODEL

Accordingly, there is a need to provide an enhanced rf front-end apparatus for solving the problem of poor gain effect of the conventional antenna system.

A reinforced radio frequency front end device comprises a reinforced antenna device and a radio frequency transceiver, wherein the reinforced antenna device comprises a substrate and two or more than two dual-polarized log periodic antennas, each dual-polarized log periodic antenna is arranged on the substrate, the radio frequency transceiver comprises a filter, a circulator, a receiver and a transmitter, the dual-polarized log periodic antennas are connected with the filter, the filter is connected with the circulator through optical fibers, and the circulator is respectively connected with the receiver and the transmitter through the optical fibers;

a dual-polarized log-periodic antenna comprising:

the antenna main body comprises four same aggregation lines, namely a first aggregation line, a second aggregation line, a third aggregation line and a fourth aggregation line, which are sequentially arranged around a space axis, wherein the first aggregation line and the third aggregation line are oppositely arranged, the second aggregation line and the fourth aggregation line are oppositely arranged, a connecting line between a middle point of the first aggregation line and a middle point of the third aggregation line is perpendicular to a connecting line between the middle point of the second aggregation line and the middle point of the fourth aggregation line, a foot is hung on the space axis, and the first aggregation line, the second aggregation line, the third aggregation line and the fourth aggregation line respectively comprise a first end and a second end; the antenna elements are alternately arranged on two sides of the first aggregation line relative to the direction of the space axis at equal intervals in sequence from the first end to the second end of the first aggregation line, and the shorter the length of the antenna elements close to the second end of the first aggregation line, the more parallel the antenna elements on the first aggregation line are and the same plane is; a plurality of antenna oscillators are also arranged on the second aggregation line, the third aggregation line and the fourth aggregation line respectively in the same way as the antenna oscillators of the first aggregation line;

the F-B covering layer is arranged at the first end of the antenna main body, and the plane of the F-B covering layer is perpendicular to the space axis;

the first coaxial line and the second coaxial line are respectively arranged on the first gathering line and the second gathering line and comprise an inner conductor, an insulating medium layer and an outer conductor layer which are coaxially arranged, the insulating medium layer is arranged between the inner conductor and the outer conductor layer, and the outer conductor layers of the first coaxial line and the second coaxial line are respectively attached to one sides, far away from the space axis, of the first gathering line and the second gathering line;

the second ends of the first aggregation line and the second aggregation line are also respectively provided with a first through hole and a second through hole, the shapes and sizes of the first through hole and the second through hole are respectively matched with the first coaxial line and the second coaxial line, the output ends of the first coaxial line and the second coaxial line are respectively connected to the first through hole and the second through hole, and the inner conductors of the first coaxial line and the second coaxial line respectively penetrate through the first through hole and the second through hole and are connected to the third aggregation line and the fourth aggregation line.

The reinforced radio frequency front end device firstly adopts a cross structure to realize the dual polarization of two single polarization antenna units, realizes the reinforced dual polarization log periodic antenna, can reduce the signal polarization loss, and ensures that the gain of the antenna device in the horizontal and vertical directions is good, meanwhile, the first end of the antenna main body is provided with an F-B covering layer which can form an F-B resonant cavity with the plane where the second end of the antenna main body is positioned, electromagnetic waves radiated by the antenna main body are superposed in phase in the resonant cavity, thereby improving the radiation gain of the reinforced dual polarization log periodic antenna, secondly, the reinforced antenna device is designed into a three-dimensional array structure by arranging an antenna array formed by the dual polarization log periodic antenna on a substrate, so that the reinforced antenna device can form vertical plane wave beams, and finally, the radio frequency transceiver realizes the transceiving of signals, thereby improving the overall gain of the antenna.

In one embodiment, the number of the F-B covering layers is more than two, and each F-B covering layer is arranged at the first end of the antenna main body after being stacked.

In one embodiment, the F-B cover layer includes a top plate and a patch disposed on a side of the top plate adjacent to the antenna body.

In one embodiment, the patch is a rectangular patch or a circular patch.

In one embodiment, dual-polarized log-periodic antennas of different frequency bands are arranged on the substrate in a crossed manner.

In one embodiment, the dual-polarized log-periodic antenna further includes a dielectric strip disposed in an area surrounded by the first set of lines, the second set of lines, the third set of lines, and the fourth set of lines.

In one embodiment, the dual-polarized log-periodic antenna further includes two or more baluns, and each balun is connected to a different one of the first, second, third, and fourth aggregation lines, respectively.

In one embodiment, the dual-polarized log-periodic antenna further comprises:

the third coaxial line is arranged on the third collecting line and is symmetrical to the first coaxial line about the spatial axis;

the fourth coaxial line is arranged on the fourth collecting line and is symmetrical to the second coaxial line about the spatial axis;

first set line, the third set line and set up in first set line, first coaxial line on the third set line, the third coaxial line, the input impedance and the second set line of the common first antenna single polarization structure of constituteing of antenna element, the fourth set line and set up in the second set line, the second coaxial line on the fourth set line, the fourth coaxial line, the input impedance of the common second antenna single polarization structure of constituteing of antenna element is 50 ohm, first coaxial line, the second coaxial line, the third coaxial line, the wire rod of fourth coaxial line is 50 ohm coaxial line.

In one embodiment, the opening height of the first through hole is higher than that of the second through hole.

In one embodiment, the dual-polarized log-periodic antenna further comprises a reflector plate disposed at the second end of the antenna body.

Drawings

FIG. 1 is a block diagram of an enhanced RF front end device in an embodiment;

FIG. 2 is a block diagram of an enhanced antenna apparatus in one embodiment;

FIG. 3 is a schematic diagram of a dual-polarized log-periodic antenna configuration in an embodiment;

FIG. 4 is a schematic diagram of the distribution of dual-polarized log-periodic antennas in another embodiment;

FIG. 5 is a schematic diagram of a specific structure of a dual-polarized log-periodic antenna according to an embodiment;

FIG. 6 is a partial schematic diagram of a coaxial wire structure in a dual-polarized log-periodic antenna according to an embodiment;

FIG. 7 is a cross-sectional view of a portion of a dual polarized log periodic antenna in one embodiment;

FIG. 8 is a top view of a dual polarized log periodic antenna in one embodiment;

FIG. 9 is a schematic diagram of an antenna monopole structure according to an embodiment;

FIG. 10 is a schematic diagram of a dual-polarized log-periodic antenna according to another embodiment;

fig. 11 is a block diagram of an enhanced rf front-end device in another embodiment.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

In an embodiment, an enhanced radio frequency front end device is provided, as shown in fig. 1 and fig. 2, the enhanced radio frequency front end device includes an enhanced antenna device 1 and a radio frequency transceiver 2, the enhanced antenna device 1 includes a substrate 11 and two or more dual-polarized log-periodic antennas 12, each dual-polarized log-periodic antenna 12 is disposed on the substrate 11, the radio frequency transceiver 2 includes a filter 21 (for filtering out harmonic clutter and reducing interference), a circulator 22, a transmitter 23 and a receiver 24, each dual-polarized log-periodic antenna 12 on the substrate 11 is connected to the filter 21, the filter 21 connects the circulator 22 with the receiver 24 and the transmitter 23 through optical fibers, respectively. Specifically, the dual-polarized log-periodic antenna 12 is vertically disposed on the substrate 11, the material of the substrate 11 is not exclusive and may be a metal plate or a plastic plate, in this embodiment, the substrate 11 is a metal substrate, and fixing members (for example, fixing bolts) are respectively disposed at four corners of the substrate 11, and the substrate 11 is fixed on the ground through the fixing members, so as to improve the fixing reliability of the substrate 11. The frequency bands of the dual polarized log periodic antennas 12 may be the same or different. In this embodiment, the dual-polarized log periodic antennas 12 of different frequency bands are arranged in a crossed manner on the substrate 11. As shown in fig. 3, the dual-polarized log-periodic antenna 12 includes a frequency band 1 antenna and a frequency band 2 antenna, and the dual-polarized log-periodic antennas 12 of two different frequency bands are arranged in a crossed manner. The specific structural dimensions of the dual-polarized log periodic antennas 12 of different frequency bands are different, as shown in fig. 4, a staggered high-gain array pattern diagram between the dual-polarized log periodic antennas 12 of different frequency bands is shown, the antenna of frequency band 1 is a low-frequency antenna and has a high height, and the antenna of frequency band 2 is a high-frequency antenna and has a low height. The dual-polarized log periodic antennas 12 with different frequency bands are placed in a crossed mode, namely, the distance between the two dual-polarized log periodic antennas 12 is enlarged, the effective aperture area is indirectly increased, and the antenna gain is improved.

Further, referring to fig. 5, a specific structure of the dual-polarized log-periodic antenna 12 is shown in fig. 5, which includes an antenna body 110, an antenna element 120, a first coaxial line 130, a second coaxial line 140 and an F-B cover layer 190.

The antenna main body 110 includes four identical aggregation lines, which are a first aggregation line 111, a second aggregation line 112, a third aggregation line 113, and a fourth aggregation line 114, respectively, and the four aggregation lines are sequentially disposed around a spatial axis, wherein the first aggregation line 111 is disposed opposite to the third aggregation line 113, and the second aggregation line 112 is also disposed opposite to the fourth aggregation line 114. Meanwhile, a connecting line between the middle point of the first aggregation line 111 and the middle point of the third aggregation line 113 is perpendicular to a connecting line between the middle point of the second aggregation line 112 and the middle point of the fourth aggregation line 114, and the connecting lines are hung on the spatial axis, namely the four aggregation lines are not staggered, but are arranged in a length alignment manner, so that the antenna keeps relatively symmetrical and stable structure as much as possible.

First set line 111, second set line 112, third set line 113, it is provided with a plurality of antenna element 120 respectively to divide equally on the fourth set line 114, antenna element 120 can be metal strip or metal bar, and the metalwork of other shapes, for convenient the description, do not call the both ends of each set line top and bottom respectively, a plurality of antenna element 120 on arbitrary set line all is from this set line bottom to the both sides of top equidistant ground setting in proper order for the space axis in the set line in proper order of direction on top, a left side right side is in turn along the equidistant ground setting in the direction from bottom to top promptly, and the antenna element that is close to the top is shorter more, a plurality of antenna element 120 on the same set line is parallel to each other and is in the coplanar simultaneously.

The F-B cover layer 190 is disposed at a first end of the antenna body 110, the plane of the F-B cover layer 190 being perpendicular to the spatial axis. Specifically, the first end of the antenna body 110 is an end near the second ends of the first, second, third and

fourth aggregation lines

111, 112, 113 and 114. When the second ends of the first aggregation line 111, the second aggregation line 112, the third aggregation line 113 and the fourth aggregation line 114 are on the same plane, any one of the second ends of the first aggregation line 111, the second aggregation line 112, the third aggregation line 113 and the fourth aggregation line 114 may be a first end of the antenna body 110, when the second ends of the first aggregation line 111, the second aggregation line 112, the third aggregation line 113 and the fourth aggregation line 114 are not on the same plane, the highest end of the second ends of the first aggregation line 111, the second aggregation line 112, the third aggregation line 113, and the fourth aggregation line 114 may be a first end of the antenna main body 110, the F-B cover layer 190 may be directly disposed on the first end of the antenna main body 110, or may be disposed on the first end of the antenna main body 110 through a connector, and a distance between the F-B cover layer 190 and the first end of the antenna main body 110 may be adjusted according to actual requirements.

The F-B cover layer 190 may be disposed in a non-exclusive manner, for example, the F-B cover layer 190 may be fixedly disposed at the first end of the antenna main body 110 during shipment or installation to keep the position fixed, so that the F-B cover layer 190 and the antenna main body 110 are structurally integrated, thereby avoiding interference factors caused during installation and improving the working performance. The antenna can also be arranged at the first end of the antenna main body 110 through a connecting piece, the type of the connecting piece is not unique, the connecting piece can be a foam connecting piece or a connecting column and the like, furthermore, the connecting piece can also be detachably fixed at the first end of the antenna main body 110, the F-B covering layer 190 is installed when needed, the F-B covering layer 190 does not need to be detached, the use is convenient, when the F-B covering layer 190 is damaged and cannot be used, only the F-B covering layer 190 can be replaced, the integral replacement of the dual-polarization log-periodic antenna 12 is avoided, and the.

The F-B cover layer 190 is parallel to a plane where the second end of the antenna main body 110 is located, taking the antenna main body 110 disposed on the ground as an example, the F-B cover layer 190 is a reflection surface 1, the antenna floor is a reflection surface 2, the two planes form an F-B resonant cavity (fabry-perot resonant cavity), the antenna main body 110 is located in the resonant cavity, and electromagnetic waves radiated by the antenna elements 120 in the antenna main body 110 are superposed in phase in the resonant cavity, thereby improving the radiation gain of the dual-polarized log-periodic antenna 12. The type of the F-B cover layer 190 is not exclusive, for example, the F-B cover layer 190 may be a graded dielectric constant cover layer, and the use of different dielectric constants at different positions of the cover layer can make the phase distribution curve more uniform, thereby improving the quality of the electromagnetic wave radiated by the dual-polarized log-periodic antenna 12. The size of the F-B cover layer 190 is not unique, in this embodiment, the thickness of the F-B cover layer 190 matches with a quarter of the wavelength of the electromagnetic wave radiated by the antenna element when propagating in the F-B cover layer 190 medium, so that the effect of increasing the gain is good, and it can be understood that the specific size of the F-B cover layer 190 may be adjusted according to actual requirements in other embodiments.

The first coaxial line 130 and the second coaxial line 140 are respectively disposed on the first collective line 111 and the second collective line 112, as shown in fig. 6, each of the first coaxial line 130 and the second coaxial line 140 includes an inner conductor 131, an insulating dielectric layer 132, and an outer conductor layer 133, which are coaxially disposed, and the insulating dielectric layer 132 is disposed between the inner conductor 131 and the outer conductor layer 133 to ensure that they do not contact each other. When the coaxial cable is arranged, the outer conductor layers 133 of the first coaxial line 130 and the second coaxial line 140 are respectively attached to the outer sides, far away from the space axis, of the first aggregation line 111 and the second aggregation line 112 so as to generate a potential difference.

Referring to fig. 7, the top ends of the first aggregation line 111 and the second aggregation line 112 are respectively provided with a first through hole 150 and a second through hole 160, the first through hole 150 and the second through hole 160 may have shapes and sizes corresponding to the first coaxial line 130 and the second coaxial line 140, and may also be larger or smaller than the cross section of the coaxial line, the coaxial line disposed on the aggregation line may connect the output end to the through hole on the aggregation line where the coaxial line is located, and further, the inner conductor of the aggregation line connected to the through hole may further extend continuously and is connected to the aggregation line opposite to the aggregation line where the coaxial line is located through the through hole to form a feeding structure. For example, the output end of the second coaxial line 140 disposed on the second aggregation line 112 is connected to the second via 160, while the inner conductor of the output end of the second coaxial line 140 further extends through the second via 160 to be connected to the fourth coaxial line 114, and the arrangement of the first aggregation line 111 and the first coaxial line 130 is also the same, which is not described herein.

In one embodiment, the number of the F-B cover layers 190 is two or more, and each of the F-B cover layers 190 is disposed at the first end of the antenna body 110 after being stacked. Taking the first end of the antenna main body 110 as the top of the antenna main body 110, the second end of the antenna main body 110 as the bottom of the antenna main body 110, and the bottom of the antenna main body 110 as the ground proximity end, for example, stacking the plurality of F-B cover layers 190 on the top of the antenna main body 110 can make the electromagnetic waves radiated by the antenna element 120 more in-phase superposed quantity when the electromagnetic waves propagate in the cavity formed by the plurality of F-B cover layers 190 and the plane where the second end of the antenna main body 110 is located, thereby further improving the radiation gain of the dual-polarized log-periodic antenna 12.

In one embodiment, the F-B cover layer 190 includes a top plate and a patch disposed on a side of the top plate proximate to the antenna body 110. The top plate is a supporting body for supporting the patch, the position of the patch can be fixed, the normal work of the patch is guaranteed, the patch is arranged on the top plate and forms a resonant cavity with a plane where the second end of the antenna main body 110 is located, the number of the patch is not unique, generally speaking, the more the number of the patch is, the smaller the size of the patch is, and the patch can be specifically selected according to actual requirements. When the number of the F-B cover layers 190 is two or more, the F-B cover layers 190 are stacked, the patches on the F-B cover layers 190 are respectively disposed on the top plates near the antenna body 110, and the F-B cover layers 190 are disposed in the same direction, which is beneficial to further improving the gain.

In one embodiment, the patch is a rectangular patch or a circular patch. Rectangular patches or circular patches can be regularly arranged on the top plate, so that the positions, working parameters and the like of the patches can be more conveniently adjusted, and the use convenience of the dual-polarized log-periodic antenna 12 is improved.

In one embodiment, the patch has a cross-shaped slot on a side thereof adjacent to the antenna body 110. The cross-shaped groove plays a role in meander, so that equivalent inductance is increased, and resonant frequency is obviously reduced, so that the size of the F-B covering layer 190 can be reduced on the premise of ensuring working performance, and stronger radiation generated by the cross-shaped groove is equivalent to increase larger loss resistance, thereby greatly improving bandwidth.

In one embodiment, the dual-polarized log-periodic antenna 12 further includes a dielectric strip disposed in an area surrounded by the first set line 111, the second set line 112, the third set line 113 and the fourth set line 114. The size of the dielectric strip is not unique, in this embodiment, the cross-sectional area of the dielectric strip is equal to the cross-sectional area of the area formed by the first aggregation line 111, the second aggregation line 112, the third aggregation line 113 and the fourth aggregation line 114, so that the dielectric strip is fixed, the working stability is improved, the length of the dielectric strip can be equal to the distance between the antenna oscillators 120 arranged at two ends of the same aggregation line, and the material waste can not be caused on the premise of ensuring the working effect. The dual-polarization log periodic antenna 12 utilizes a quasi-period aligning model, the oscillators are not crossed, the array elements are each pair of oscillators, the four pairs of oscillators are dual-polarized, the length of each layer of oscillators is different, therefore, a wider bandwidth is realized, and the intervals of the array elements are different. The Hansen-Wood's terminal emitting condition is realized by adding the dielectric strips in the middle of the feed collection plate, dielectric strip dielectric constants of all layers of oscillators are different, and a strong terminal emitting array is formed, so that the purpose of improving the gain of the antenna is realized.

In one embodiment, referring to fig. 10, the dual-polarized log-periodic antenna 12 further includes more than two baluns 210, and each balun 210 is connected to a different one of the first aggregation line 111, the second aggregation line 112, the third aggregation line 113, and the fourth aggregation line 114. Although fig. 10 does not show a specific connection manner between the antenna main body 110 and the F-B cover layer 190, the antenna main body 110 and the F-B cover layer 190 may be actually connected by a connection member. Specifically, in the present embodiment, taking the dual-polarized log-periodic antenna 12 as an example that includes the first balun and the second balun, the port of the first balun is connected to the first aggregation line 111, and the port of the second balun is connected to the second aggregation line 112, and further, the port of the balun connected to the aggregation line may further continue to extend to be connected to the aggregation line opposite to the connected aggregation line, so as to constitute the feeding structure. The connection relationship between the other baluns and the assembly line can be analogized, and the description is omitted here. The feed structure formed by more than two baluns can realize the balanced feed of the antenna oscillator and improve the working performance of the dual-polarized log periodic antenna 12.

In one embodiment, the shape of each aggregate line constituting the antenna body 110 is a rectangular parallelepiped to facilitate the mounting of components such as an antenna element, a coaxial line, and the like.

As shown in fig. 5 and 8, in one embodiment, the dual-polarized log-periodic antenna 12 further includes a third coaxial line 170 and a fourth coaxial line 180 respectively disposed on the third collective line 113 and the fourth collective line 114, and the third coaxial line 170 is symmetrical to the first coaxial line 130 about the aforementioned spatial axis, and the fourth coaxial line 180 and the second coaxial line 140 are symmetrical about the aforementioned spatial axis. In one embodiment, the third coaxial line 170 may also be equal in length to the first coaxial line 130, and the fourth coaxial line 180 may be equal in length to the second coaxial line 140. In another embodiment, the third coaxial line 170 is identical to the first coaxial line 130 and the fourth coaxial line 180 is identical to the second coaxial line 140. By providing the coaxial lines symmetrical to the first coaxial line 130 and the second coaxial line 140, the structural symmetry of the dual-polarized log periodic antenna 12 can be ensured, so that the symmetry of the radiation characteristics of the antenna is ensured, and the antenna performance is improved.

As shown in fig. 9, in one embodiment, the input impedance of the first and

third aggregation lines

111 and 113 and the first antenna single-polarization structure formed by the first and third

coaxial lines

130 and 170 and the antenna element disposed on the first and

third aggregation lines

111 and 113 is 50 ohms. The input impedance of the second antenna single-polarization structure composed of the second collective line 112 and the fourth collective line 114, and the second coaxial line 140, the fourth coaxial line 180, and the antenna element provided on the second collective line 112 and the fourth collective line 114 is also 50 ohms. The dual-polarized log periodic antenna 12 does not need an impedance transformer, can directly adopt a 50-ohm coaxial line for feeding, and is convenient and stable and strong in adaptability. The top feed adopts coaxial line feed, and coaxial feed is hugged closely with the assembly line and is linked together, simultaneously, also can assemble the line bottom and carry out coaxial feed. Further, in one embodiment, the wires of the first coaxial line 130, the second coaxial line 140, the third coaxial line 170, and the fourth coaxial line 180 are all 50 ohm coaxial lines.

In one embodiment, the first through hole 150 is opened closer to the top end than the second through hole 160, so that the inner conductors of the first coaxial line 130 and the second coaxial line 140 are not overlapped when being connected to the third aggregation line 113 and the fourth aggregation line 114, respectively, to avoid interference.

In one embodiment, referring to fig. 10, the dual-polarized log-periodic antenna 12 may further include a reflection plate 220 disposed at the second end of the antenna body 110. Specifically, the second end of the antenna body 110 may be a ground-proximal end, i.e., a bottom end, of the antenna body 110. Through setting up reflecting plate 220, can assemble the reflection away with antenna backward wave beam through reflecting plate 220 to improve the front-to-back ratio of antenna effectively, also have certain effect to improving antenna gain and directionality, improve the antenna performance.

Further, when the dual-polarized log-periodic antennas 12 are used simultaneously and the frequency bands of the dual-polarized log-periodic antennas 12 are different, the dual-polarized log-periodic antennas 12 of different frequency bands are placed in a crossed manner, so that the effective aperture area is indirectly increased, the effective radiation area is increased, and the gain is improved.

In one embodiment, as shown in fig. 11, the radio frequency transceiver 2 further includes a power amplifier 25 and a low noise amplifier 26, the circulator 22 is connected to the low noise amplifier 26, and the low noise amplifier 26 is connected to the receiver 24; circulator 22 is connected to power amplifier 25, and power amplifier 25 is connected to transmitter 23. Specifically, the enhanced antenna device 1 is connected with the filter 21, the filter 21 is respectively connected with the power amplifier 25 and the low noise amplifier 26 through the circulator 22, the power amplifier 25 is connected with the transmitter 23, the low noise amplifier 26 is connected with the receiver 24, and a signal transmitting channel and a signal receiving channel are respectively formed, so that the enhanced radio frequency front-end device formed by the enhanced radio frequency front-end device realizes maximum transmitting and receiving gains, and the utilization efficiency of space is effectively improved. And because the enhanced antenna device 1 is of a three-dimensional structure, a three-dimensional array is formed, the original two-dimensional antenna is configured into a three-dimensional enhanced radio frequency front-end device, and single beam wave configuration with maximum gain can be realized.

In this embodiment, the power amplifier 25 and the low noise amplifier 26 are respectively added in the signal transmitting channel and the signal receiving channel, and the signals to be transmitted are power-amplified to improve the transmitting power, and the received signals are amplified for subsequent signal processing, so that the communication reliability of the enhanced radio frequency front end device is improved. In addition, each device in the radio frequency transceiver 2 transmits signals through optical fibers, so that the signal transmission speed is high, the loss is small, the anti-interference capability is high, and the communication reliability of the system can be further improved.

In addition, in one embodiment, the enhanced radio frequency front end further comprises a control device, which is connected to the receiver 24 and the transmitter 23. Specifically, the Control device may employ an MCU (Micro Control Unit). The control device controls the signal receiving and sending of the enhanced antenna device 1, and the communication reliability of the antenna system is improved.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A reinforced radio frequency front end device is characterized by comprising a reinforced antenna device and a radio frequency transceiver device, wherein the reinforced antenna device comprises a substrate and two or more than two dual-polarized log-periodic antennas, each dual-polarized log-periodic antenna is arranged on the substrate, the radio frequency transceiver device comprises a filter, a circulator, a receiver and a transmitter, the dual-polarized log-periodic antennas are connected with the filter, the filter is connected with the circulator through optical fibers, and the circulator is respectively connected with the receiver and the transmitter through the optical fibers;

the dual-polarized log-periodic antenna comprises:

the antenna main body comprises four same aggregation lines, namely a first aggregation line, a second aggregation line, a third aggregation line and a fourth aggregation line, which are sequentially arranged around a space axis, wherein the first aggregation line and the third aggregation line are oppositely arranged, the second aggregation line and the fourth aggregation line are oppositely arranged, a connecting line between a midpoint of the first aggregation line and a midpoint of the third aggregation line is perpendicular to a connecting line between the midpoint of the second aggregation line and the midpoint of the fourth aggregation line, a foot is hung on the space axis, and the first aggregation line, the second aggregation line, the third aggregation line and the fourth aggregation line respectively comprise a first end and a second end; the antenna elements are alternately arranged on two sides of the first aggregation line relative to the space axis direction at equal intervals in sequence from the first end to the second end of the first aggregation line, and the shorter the length of the antenna element close to the second end of the first aggregation line, the antenna elements on the first aggregation line are parallel to each other and are positioned on the same plane; a plurality of antenna oscillators are also arranged on the second aggregation line, the third aggregation line and the fourth aggregation line respectively, and the arrangement mode of the antenna oscillators is the same as that of the antenna oscillators of the first aggregation line;

an F-B cover layer disposed at a first end of the antenna body, a plane of the F-B cover layer being perpendicular to the spatial axis;

the first coaxial line and the second coaxial line are respectively arranged on the first aggregation line and the second aggregation line and comprise an inner conductor, an insulating medium layer and an outer conductor layer which are coaxially arranged, the insulating medium layer is arranged between the inner conductor and the outer conductor layer, and the outer conductor layer of the first coaxial line and the second coaxial line are respectively attached to one sides, far away from the space axis, of the first aggregation line and the second aggregation line;

the first set line with the second end of second set line still is provided with first through-hole and second through-hole respectively, the shape and the size of first through-hole and second through-hole respectively with first coaxial line and second coaxial line suit, the output of first coaxial line and second coaxial line is connected to respectively first through-hole and second through-hole, just the inner conductor of first coaxial line and second coaxial line passes respectively first through-hole with the second through-hole is connected to the third set line with the fourth set line.

2. The enhanced radio frequency front end device according to claim 1, wherein the number of the F-B covering layers is two or more, and each of the F-B covering layers is disposed at the first end of the antenna body after being stacked.

3. The enhanced radio frequency front end device according to claim 1, wherein the F-B overlay comprises a top plate and a patch, the patch being disposed on a side of the top plate adjacent to the antenna body.

4. The enhanced radio frequency front end device according to claim 3, wherein the patch is a rectangular patch or a circular patch.

5. The enhanced radio frequency front end device according to claim 1, wherein dual polarized log periodic antennas of different frequency bands are crosswise arranged on the substrate.

6. The enhanced radio frequency front end device according to claim 1, wherein the dual-polarized log-periodic antenna further comprises a dielectric strip disposed in an area surrounded by the first set of lines, the second set of lines, the third set of lines, and the fourth set of lines.

7. The enhanced radio frequency front end device according to claim 1, wherein the dual-polarized log-periodic antenna further comprises two or more baluns, each balun is connected to a different one of the first, second, third and fourth aggregation lines, respectively.

8. The enhanced radio frequency front end device according to claim 1, wherein said dual polarized log periodic antenna further comprises:

a third coaxial line disposed on the third collective line, symmetrical to the first coaxial line with respect to the spatial axis;

a fourth coaxial line disposed on the fourth collective line and symmetrical to the second coaxial line with respect to the spatial axis;

first set line, third set line and set up in the first coaxial line of first coaxial line, third coaxial line, the common first antenna single polarization structure of constituteing of antenna element on first set line, the third set line input impedance with second set line, fourth set line and set up in the second coaxial line of second set line, fourth set line, the common second antenna single polarization structure's of constituteing of antenna element input impedance is 50 ohm, first coaxial line, second coaxial line, third coaxial line, fourth coaxial line's wire rod are 50 ohm coaxial lines.

9. The enhanced radio frequency front end device according to claim 1, wherein an opening height of the first through hole is higher than an opening height of the second through hole.

10. The enhanced radio frequency front end device according to claim 1, wherein said dual polarized log periodic antenna further comprises a reflector plate, said reflector plate being disposed at a second end of said antenna body.