CN211530175U - Dual-frequency dual-polarized plate-shaped antenna - Google Patents

Abstract

The embodiment of the application discloses a dual-frequency dual-polarized plate-shaped antenna, which comprises a bottom plate, low-frequency band units, high-frequency band units and a printed circuit board assembly; the low-frequency section unit comprises a low-frequency section active oscillator and a low-frequency section parasitic oscillator, the high-frequency section unit comprises a high-frequency section active oscillator and a high-frequency section parasitic oscillator, oscillator feed points of the low-frequency section active oscillator and the high-frequency section active oscillator are respectively connected with a first coaxial connector and a second coaxial connector through coaxial cables, and the first coaxial connector and the second coaxial connector are both connected with the printed circuit board assembly; the printed circuit board assembly comprises a substrate and a combiner, and the first coaxial connector and the second coaxial connector are both connected with the combiner; the low-frequency active oscillator and the high-frequency active oscillator are fixed with the bottom plate through the moving piece. According to the dual-frequency dual-polarized plate-shaped antenna, the number of the input and output ports of the antenna is reduced on the premise of dual-frequency dual polarization of the antenna, the size of the antenna is greatly reduced, and the structure is more compact.

Description

Dual-frequency dual-polarized plate-shaped antenna

Technical Field

The application relates to the field of communication transmission, in particular to a dual-frequency dual-polarized plate-shaped antenna.

Background

Microstrip antennas are widely used because of their advantages of small size, light weight, simple manufacturing process, easy realization of conformality, etc. A microstrip antenna may be equivalent to a resonant cavity, having a high value near its resonant frequency, i.e., within the operating band. Although the research and application of microstrip antennas are mature at present, there are many problems worth studying the analysis and research of the electromagnetic scattering characteristics of microstrip antennas.

In the design of a microstrip antenna, in order to secure radiation characteristics of the antenna, it is inevitable to increase antenna scattering of the antenna. The radiation characteristic of the antenna is affected by the size of its space, the gain and the bandwidth, and the three are mutually restricted factors. The existing microstrip antenna is designed with a dual-frequency antenna for improving the bandwidth and gain of the antenna, but antenna oscillators of two frequency bands are carried on a bottom plate, and due to the increase of parts, the problems of disordered wiring and scattered distribution of the parts on the bottom plate are caused on the one hand, and on the other hand, due to the arrangement of the two antenna oscillators on the bottom plate, the problem of the increase of the whole volume of the antenna is caused, so that the dual-frequency antenna cannot meet the use environment with small installation space, and the practicability of the antenna is greatly reduced. Therefore, a dual-band antenna with a small size and a large bandwidth, which can meet the gain requirement, is needed to meet various use requirements.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the technical problem, the utility model provides a dual-frenquency dual-polarized plate antenna, adopt initiative oscillator and parasitic oscillator to stack the setting, and with the present point of initiative oscillator be connected with the printed circuit board that has the way function, reduce the volume of antenna by a wide margin, and through the setting of first coaxial line and second coaxial line, simplify the cable on the bottom plate and arrange, realized that the antenna reduces the volume of antenna by a wide margin under the prerequisite of dual-frenquency, improve the application scope of dual-frenquency antenna.

In order to achieve the above object, the present invention provides a dual-frequency dual-polarized plate antenna, which comprises a bottom plate, a low-frequency unit, a high-frequency unit and a printed circuit board assembly; the low-frequency section unit comprises a plurality of low-frequency section active vibrators and a plurality of low-frequency section parasitic vibrators, wherein vibrator feed points of the low-frequency section active vibrators are connected to a first coaxial connector through a coaxial cable, and the first coaxial connector is connected with the printed circuit board assembly; the high-frequency section unit comprises a plurality of high-frequency section active vibrators and a plurality of high-frequency section parasitic vibrators, vibrator feed points of the high-frequency section active vibrators are connected to a second coaxial connector through the coaxial cables, and the second coaxial connector is connected with the printed circuit board assembly; the printed circuit board assembly comprises a substrate and a combiner, the combiner is fixed with the substrate, and the first coaxial connector and the second coaxial connector are both connected with the combiner; the low-frequency-band active oscillator and the high-frequency-band active oscillator are fixed with the bottom plate through moving pieces, and the bottom of the base plate is fixed with the top of the bottom plate.

Based on the structure, in the circuit arrangement of the plate-shaped antenna, the active oscillator and the parasitic oscillator are stacked, and oscillator feed points of the high-frequency-band active oscillator and the low-frequency-band active oscillator are connected through coaxial cables, so that the arrangement of circuits on the bottom plate is simplified, and the high-frequency-band active oscillator and the low-frequency-band active oscillator are connected with a combiner on a printed circuit board assembly through a first coaxial connector and a second coaxial connector.

Preferably, the low-band active oscillator includes a low-band first polarization end and a low-band second polarization end, the polarization directions of which are perpendicular to each other, the high-band active oscillator includes a high-band first polarization end and a high-band second polarization end, the polarization directions of which are the same as each other, and the polarization directions of which are the same as each other; the combiner comprises a first combiner and a second combiner; the low-frequency band first polarization ends of the low-frequency band active oscillators are connected with the high-frequency band first polarization ends of the high-frequency band active oscillators in parallel and then are connected with the first combiner through the first coaxial line; the low-frequency band second polarization ends of the low-frequency band active oscillators are connected with the high-frequency band second polarization ends of the high-frequency band active oscillators in parallel and then are connected with the second combiner through the second coaxial lines.

Furthermore, the low-frequency band first polarization end and the high-frequency band first polarization end with the same polarization direction are connected in parallel and then connected with the first combiner, the low-frequency band second polarization end and the high-frequency band second polarization end with the same polarization direction are connected in parallel and then connected with the second combiner, a power distribution network is built, only two input and output ports are needed on the antenna, signal transmission of the low-frequency band unit and the high-frequency band unit can be prevented from interfering with each other, and the gain of the antenna is not influenced while the size of the antenna is reduced.

Preferably, the first coaxial line and the second coaxial line are both RG405 wires.

Furthermore, the RG405 wire rod with low return loss and low insertion loss is used as a first coaxial line and a second coaxial line, so that the dual-frequency dual-polarized plate-shaped antenna can ensure that the gain of the antenna is not influenced while the size of the antenna is reduced.

Preferably, the low-frequency active oscillator is a 2.4GHz active oscillator, and the low-frequency parasitic oscillator is a 2.4GHz parasitic oscillator; the high-frequency-band active oscillator is a 5GHz active oscillator, and the high-frequency-band parasitic oscillator is a 5GHz parasitic oscillator.

Preferably, the moving part comprises a cushion block and a clamping groove which are matched, and the top of the cushion block is fixed with the low-frequency-band active oscillator, the high-frequency-band active oscillator and the bottom of the substrate; the clamping groove is formed in the top of the bottom plate.

Furthermore, through the arrangement of the cushion block and the clamping groove, the distance between the bottom plate and the active oscillator and between the active oscillator and the active oscillator can be controlled through the cushion block, so that a connecting cable on the bottom plate can be more concise when being arranged, and the antenna is convenient to use and reduced in size.

Preferably, the clamping groove penetrates through the bottom plate, and a cushion block press riveting screw is arranged at the bottom of the clamping groove; movable nuts matched with the cushion block riveting screws are arranged at the tops of the low-frequency-band parasitic oscillator and the high-frequency-band parasitic oscillator; the low-frequency-band active oscillator, the low-frequency-band parasitic oscillator, the high-frequency-band active oscillator and the high-frequency-band parasitic oscillator are all in threaded connection with the cushion block riveting screw and are fixed with the bottom plate through the movable nut.

Further, through the use of removing nut and cushion pressure riveting screw, make low band initiative oscillator, low band parasitic oscillator, high band initiative oscillator and high band parasitic oscillator after the interval is adjusted, more stable with being connected between the bottom plate, prevent the circuit disconnection problem that the oscillator skew caused from appearing in the use, improve the practicality and the reliability of this application dual-frenquency high gain plate antenna.

Preferably, the low-frequency-band active oscillator and the high-frequency-band active oscillator are both symmetrical metal stamping parts.

Furthermore, the low-frequency-band active oscillator and the high-frequency-band active oscillator which are formed by symmetrical metal stamping parts are adopted, so that the synchronism of signal transmission in two polarization directions of the active oscillators is improved, and the gain of the dual-frequency high-gain plate-shaped antenna is further improved.

Preferably, the bottom plate is provided with a plurality of mounting threaded holes, and bottom plate press riveting screws for mounting and fixing the bottom plate are screwed in the mounting threaded holes.

Further, rivet the screw through installation screw hole and the pressure of predetermineeing the ground bottom plate on the bottom plate of reserving, make the user in the use, only need rivet the screw with the bottom plate pressure and carry out the spiro union with the mounted position, can accomplish the installation of antenna, made things convenient for the use, improved the practicality of this application dual-frenquency high gain plate antenna.

To sum up, according to the utility model discloses a dual-frenquency dual-polarized plate antenna, adopt the initiative oscillator and the parasitic oscillator that stack, through the level of initiative oscillator, the power distribution network of vertical direction feed simultaneously, the feed point with the initiative oscillator is connected with the printed circuit board subassembly that has the way function of combining, reduce antenna input/output port's quantity, reduce the volume of antenna by a wide margin, and through the setting of first coaxial line and second coaxial line, simplify the cable arrangement on the bottom plate, realized the antenna under the prerequisite of dual-frenquency, reduce the volume of antenna by a wide margin, the structure is compacter, improve the application scope of dual-frenquency antenna.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without inventive exercise.

Fig. 1 is a front view of the present invention;

fig. 2 is a side view of the present invention;

fig. 3 is a perspective view of the present invention;

FIG. 4 is a schematic structural view of a moving member of the present invention;

reference numerals of the above figures: 100-base plate, 101-mounting threaded hole, 102-base plate clinch screw, 200-low band unit, 210-low band active vibrator, 211-low band first polarization end, 212-low band second polarization end, 220-low band parasitic vibrator, 300-high band unit, 310-high band active vibrator, 311-high band first polarization end, 312-high band second polarization end, 320-high band parasitic vibrator, 400-printed circuit board assembly, 410-substrate, 420-filter, 421-first filter, 422-second filter, 501-first coaxial connector, 502-second coaxial connector, 600-coaxial cable, 601-first coaxial line, 602-second coaxial line, 700-moving member, 701-spacer, 702-clamping groove, 703-cushion block riveting screw and 704-moving nut.

Detailed Description

In order to make those skilled in the art better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

Example (b): referring to fig. 1 and 2, a dual-band dual-polarized plate antenna includes a chassis 100, low-band elements 200, high-band elements 300, and a printed circuit board assembly 400. The base plate 100 may be a PVC plate as known in the art. The low-frequency section unit 200 comprises a plurality of low-frequency section active vibrators 210 and a plurality of low-frequency section parasitic vibrators 220, the vibrator feed point of the low-frequency section active vibrator 210 is connected to a first coaxial connector 501 through a coaxial cable 600, and the first coaxial connector 501 is connected with the printed circuit board assembly 400; the high-frequency band unit 300 comprises a plurality of high-frequency band active vibrators 310 and a plurality of high-frequency band parasitic vibrators 320, vibrator feed points of the high-frequency band active vibrators 310 are connected to a second coaxial connector 502 through a coaxial cable 600, and the second coaxial connector 502 is connected with the printed circuit board assembly 400; the printed circuit board assembly 400 includes a substrate 410 and a combiner 420, the combiner 420 is fixed to the substrate 410, and both the first coaxial connector 501 and the second coaxial connector 502 are connected to the combiner 420; the low-frequency active vibrator 210 and the high-frequency active vibrator 310 are fixed to the base plate 100 by the moving member 700, and the bottom of the substrate 410 is fixed to the top of the base plate 100.

Based on the above structure, in the circuit layout of the panel antenna, the active oscillator and the parasitic oscillator are stacked, and the oscillator feed points of the high-band active oscillator 310 and the low-band active oscillator 210 are connected through the coaxial cable 600, so that the layout of the circuit on the bottom board 100 is simplified, and the signals in the low-band unit 200 and the high-band unit 300 are combined into the same input/output port on the premise of dual frequency by connecting the first coaxial connector 501 and the second coaxial connector 502 with the combiner 420 on the pcb assembly 400, thereby reducing the number of input/output ports in the antenna, greatly reducing the volume of the antenna, and having a more compact structure.

As a preferred implementation manner of this embodiment, referring to fig. 3, the low-band active oscillator 210 includes a low-band first polarization end 211 and a low-band second polarization end 212 having polarization directions perpendicular to each other, the high-band active oscillator 310 includes a high-band first polarization end 311 and a high-band second polarization end 312 having polarization directions perpendicular to each other, and the polarization directions of the low-band first polarization end 211 and the high-band first polarization end 311 are the same and both are horizontal; the polarization directions of the low-band second polarization end 212 and the high-band second polarization end 312 are the same and are vertical; the combiner 420 includes a first combiner 421 and a second combiner 422, and the coaxial cable 600 includes a first coaxial line 601 and a second coaxial line 602; the low-frequency band first polarization ends 211 of the low-frequency band active vibrators 210 are connected with the high-frequency band first polarization end 311 of the high-frequency band active vibrator 310 in parallel and then connected with the first combiner 421 through the first coaxial line 601; the low-band second polarization ends 212 of the low-band active vibrators 210 are connected in parallel with the high-band second polarization end 312 of the high-band active vibrator 310 and then connected with the second combiner 422 through the second coaxial line 602. The first 421 and second 422 combiners are based on the prior art. The advantage of this arrangement is that, by connecting the low-band first polarization end 211 and the high-band first polarization end 311 with the same polarization direction in parallel and then connecting them to the first combiner 421, and connecting the low-band second polarization end 212 and the high-band second polarization end 312 with the same polarization direction in parallel and then connecting them to the second combiner 422, a power distribution network is built, only two input/output ports are needed on the antenna, and the mutual interference of signal transmission of the low-band unit 200 and the high-band unit 300 can be prevented, and the gain of the antenna is not affected while the volume of the antenna is reduced.

In the present embodiment, both first coaxial line 601 and second coaxial line 602 are RG405 wires. The advantage of setting up like this is, adopts the RG405 wire rod of low return loss and low insertion loss as first coaxial 601 and second coaxial 602, has realized that this application dual-frenquency dual-polarized plate antenna can guarantee that the gain of antenna is not influenced when reducing the antenna volume.

As a preferred implementation manner of this embodiment, the low-band active oscillator 210 is a 2.4GHz active oscillator, and the low-band parasitic oscillator 220 is a 2.4GHz parasitic oscillator; the high-band active oscillator 310 is a 5GHz active oscillator and the high-band parasitic oscillator 320 is a 5GHz parasitic oscillator. In the use of multiband antenna, 2.4GHz, 5GHz and 5.8GHz are the most commonly used frequency bands, and the 2.4GHz frequency band and 5GHz frequency band are adopted as double-frequency performance in the application, so that the use requirements of most users on high and low frequency bands can be met.

As a preferred implementation manner of this embodiment, referring to fig. 4, the moving member 700 includes a pad 701 and a slot 702 that are matched, and the top of the pad 701 is fixed to the low-band active oscillator 210, the high-band active oscillator 310 and the bottom of the substrate 410; a card slot 702 opens at the top of the backplane 100. The cushion block 701 is a non-metal block structure in the prior art, the clamping groove 702 is a groove formed by a milling process in the prior art, and in the embodiment, the outer wall of the cushion block 701 can be clamped and fixed with the inner wall of the clamping groove 702. The advantage that sets up like this is, through the setting of cushion 701 and draw-in groove 702, makes between bottom plate 100 and the initiative oscillator, between initiative oscillator and the initiative oscillator all can carry out interval control through cushion 701, makes the connecting cable on the bottom plate 100 when arranging, can be more succinct, has made things convenient for the use and has reduced the volume of antenna.

In this embodiment, the slot 702 penetrates the bottom plate 100, and a cushion block rivet pressing screw 703 is disposed at the bottom of the slot 702; the top of the low-frequency parasitic oscillator 220 and the top of the high-frequency parasitic oscillator 320 are provided with movable nuts 704 matched with the cushion block riveting screws 703; the low-frequency-band active vibrator 210, the low-frequency-band parasitic vibrator 220, the high-frequency-band active vibrator 310 and the high-frequency-band parasitic vibrator 320 are all in threaded connection with the cushion block riveting screw 703 and are fixed with the bottom plate 100 through the movable nut 704. The traveling nut 704 may be a prior art plastic nut and the spacer clinch screw 703 may be a prior art plastic screw. The benefit that sets up like this is, through the use that removes nut 704 and cushion pressure riveting screw 703, makes low band initiative oscillator 210, low band parasitic oscillator 220, high band initiative oscillator 310 and high band parasitic oscillator 320 after the interval is adjusted, and is more stable with being connected between bottom plate 100, prevents to appear the circuit disconnection problem that the oscillator skew caused in the use, improves the practicality and the reliability of this application dual-frenquency high gain plate antenna.

As a preferred implementation manner of this embodiment, the low-band active oscillator 210 and the high-band active oscillator 310 are both symmetric metal stampings. The advantage of such setting is that the low-frequency band active oscillator 210 and the high-frequency band active oscillator 310 formed by the symmetric metal stamping parts improve the synchronism of signal transmission in two polarization directions of the active oscillator, thereby improving the gain of the dual-frequency high-gain plate antenna.

As a preferred embodiment of this embodiment, the bottom plate 100 is provided with a plurality of mounting threaded holes 101, and bottom plate rivet pressing screws 102 for mounting and fixing the bottom plate 100 are screwed in the mounting threaded holes 101. The benefit that sets up like this is through installing threaded hole 101 and the bottom plate pressure riveting screw 102 of presetting ground on the bottom plate on the reservation, makes the user in the use, only needs to press riveting screw 102 with the bottom plate and carry out the spiro union with the mounted position, can accomplish the installation of antenna, has made things convenient for the use, has improved the practicality of this application dual-frenquency high gain plate antenna.

The working principle is as follows: when the active vibrator is used, the position of the cushion block 701 in the clamping groove 702 is adjusted by adjusting the tightness between the cushion block rivet pressing screw 703 and the bottom plate 100, the cushion block rivet pressing screw 703 is screwed down after the space between the active vibrators meets the use requirement, and the moving member 700 and the bottom plate 100 are fixed;

in the arrangement of parts on the bottom plate, the active oscillators and the parasitic oscillators of the low-frequency section unit and the high-frequency section unit are stacked, and the feed points of the active oscillators are connected with the printed circuit board assembly 400 with the combining function through the power distribution network for simultaneously feeding the active oscillators in the horizontal and vertical directions, so that the number of input and output ports of the antenna is reduced, and the volume of the antenna is greatly reduced; in the arrangement of the circuit on the bottom plate 100, the arrangement of the first coaxial line 601 and the second coaxial line 602 simplifies the cable arrangement on the bottom plate 100, and realizes that the volume of the antenna is greatly reduced and the application range of the dual-frequency antenna is improved on the premise of dual-frequency.

The foregoing description is for the purpose of illustration and is not for the purpose of limitation. Many embodiments and many applications other than the examples provided will be apparent to those of skill in the art upon reading the above description. The scope of the present teachings should, therefore, be determined not with reference to the above description, but should instead be determined with reference to the appended claims, along with the full scope of equivalents to which such claims are entitled. The disclosures of all articles and references, including patent applications and publications, are hereby incorporated by reference for all purposes. The omission in the foregoing claims of any aspect of subject matter that is disclosed herein is not intended to forego the subject matter and should not be construed as an admission that the applicant does not consider such subject matter to be part of the disclosed subject matter.

Claims (8)

1. A dual-frequency dual-polarized plate-shaped antenna is characterized by comprising a bottom plate (100), low-band units (200), high-band units (300) and a printed circuit board assembly (400);

the low-frequency band unit (200) comprises a plurality of low-frequency band active vibrators (210) and a plurality of low-frequency band parasitic vibrators (220), vibrator feed points of the low-frequency band active vibrators (210) are connected to a first coaxial connector (501) through a coaxial cable (600), and the first coaxial connector (501) is connected with the printed circuit board assembly (400);

the high-frequency band unit (300) comprises a plurality of high-frequency band active vibrators (310) and a plurality of high-frequency band parasitic vibrators (320), vibrator feed points of the high-frequency band active vibrators (310) are connected to a second coaxial connector (502) through the coaxial cable (600), and the second coaxial connector (502) is connected with the printed circuit board assembly (400);

the printed circuit board assembly (400) comprises a substrate (410) and a combiner (420), wherein the combiner (420) is fixed with the substrate (410), and the first coaxial connector (501) and the second coaxial connector (502) are both connected with the combiner (420);

the low-frequency-band active vibrator (210) and the high-frequency-band active vibrator (310) are fixed with the bottom plate (100) through a moving piece (700), and the bottom of the base plate (410) is fixed with the top of the bottom plate (100).

2. The dual-band dual-polarized plate antenna of claim 1, wherein the low-band active element (210) comprises a low-band first polarized end (211) and a low-band second polarized end (212) having mutually perpendicular polarization directions, the high-band active element (310) comprises a high-band first polarized end (311) and a high-band second polarized end (312) having mutually perpendicular polarization directions, the polarization directions of the low-band first polarized end (211) and the high-band first polarized end (311) are the same, and the polarization directions of the low-band second polarized end (212) and the high-band second polarized end (312) are the same;

the combiner (420) comprises a first combiner (421) and a second combiner (422), the coaxial cable (600) comprises a first coaxial line (601) and a second coaxial line (602);

the low-frequency band first polarization ends (211) of the low-frequency band active oscillators (210) are connected in parallel with the high-frequency band first polarization end (311) of the high-frequency band active oscillator (310) and then are connected with the first combiner (421) through the first coaxial line (601);

the low-frequency band second polarization ends (212) of the low-frequency band active oscillators (210) are connected with the high-frequency band second polarization ends (312) of the high-frequency band active oscillator (310) in parallel and then are connected with the second combiner (422) through the second coaxial line (602).

3. Dual-frequency dual-polarized plate antenna according to claim 2, characterized in that both said first coaxial line (601) and said second coaxial line (602) are RG405 wires.

4. The dual-frequency dual-polarized plate antenna according to claim 1, wherein the low-band active element (210) is a 2.4GHz active element, and the low-band parasitic element (220) is a 2.4GHz parasitic element; the high-frequency-band active oscillator (310) is a 5GHz active oscillator, and the high-frequency-band parasitic oscillator (320) is a 5GHz parasitic oscillator.

5. The dual-frequency dual-polarized plate-shaped antenna according to claim 1, wherein the moving element (700) comprises a cushion block (701) and a clamping groove (702) which are matched, and the top of the cushion block (701) is fixed with the low-frequency band active oscillator (210), the high-frequency band active oscillator (310) and the bottom of the substrate (410); the clamping groove (702) is arranged at the top of the bottom plate (100).

6. The dual-frequency dual-polarized plate-shaped antenna according to claim 5, wherein the card slot (702) penetrates through the bottom plate (100), and a cushion block rivet pressing screw (703) is arranged at the bottom of the card slot (702); the top parts of the low-frequency-band parasitic vibrator (220) and the high-frequency-band parasitic vibrator (320) are provided with movable nuts (704) matched with the cushion block riveting screws (703); the low-frequency-band active vibrator (210), the low-frequency-band parasitic vibrator (220), the high-frequency-band active vibrator (310) and the high-frequency-band parasitic vibrator (320) are in threaded connection with the cushion block riveting screw (703), and are fixed with the bottom plate (100) through the movable nut (704).

7. The dual-frequency dual-polarized plate antenna according to claim 1, wherein the low-band active element (210) and the high-band active element (310) are both symmetrical metal stampings.

8. The dual-frequency dual-polarized plate-shaped antenna according to claim 1, wherein a plurality of mounting threaded holes (101) are formed in the bottom plate (100), and bottom plate rivet pressing screws (102) for mounting and fixing the bottom plate (100) are screwed in the mounting threaded holes (101).

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