CN207947375U - A miniaturized low frequency vibrator - Google Patents

Abstract

The utility model is related to a kind of Miniaturized low-frequency oscillators, wherein：The low-frequency vibrator includes a column pedestal and is integrally formed in column pedestal upper surface and outwardly extending first oscillator arms, the second oscillator arms, third oscillator arms, the 4th oscillator arms, and four oscillator arms are evenly distributed between column pedestal upper surface and four oscillator arms slot between formation " ten " font；Each oscillator arms have two vertical oscillators while and one be connected to two oscillators while outer end and to the interior concave edge of central fovea；First oscillator arms and the 4th oscillator arms, the second oscillator arms and third oscillator arms are dissymmetrical structure relative to slot between them.The utility model Miniaturized low-frequency oscillator can reduce antenna volume again when improving antenna performance；And radiation arm can be improved the cross polarization ratio that has a down dip after antenna array, and keep the covering of antenna frequency band wider, can be covered domestic and international antenna for base station low frequency segment limit, promote antenna performance using local dissymmetrical structure in the utility model low-frequency vibrator.

Description

A miniaturized low frequency vibrator

Technical field:

The utility model relates to the technical field of antenna equipment, in particular to a miniaturized low-frequency vibrator.

Background technique:

The shape and shape of the high-frequency vibrator and low-frequency vibrator and their arrangement in the multi-frequency antenna have a great influence on the radiation performance and overall volume of the entire antenna device. Generally speaking, in order to reduce the radiation of the high-frequency oscillator being blocked by the low-frequency oscillator, the greater the distance between the high-frequency oscillator and the low-frequency oscillator, the better. However, this will increase the overall volume of the antenna and increase the cost, which is not easy to install and Use, that is, there is a contradiction between radiation performance and volume size. The current low-frequency vibrator generally adopts a symmetrical structure, and the outer contour of the radiation arm is a square or circular structure, covering a larger range, and the low-frequency vibrator has a higher height from the ground, so that it is easy to control the surrounding high-frequency The radiation of the vibrator is blocked, thereby affecting the performance of the entire antenna device.

Utility model content:

The purpose of the utility model is to overcome the shortcomings of the prior art and provide a miniaturized low-frequency vibrator.

The technical solution adopted by the utility model to achieve its purpose is: a miniaturized low-frequency vibrator, wherein: the low-frequency vibrator includes a columnar base and four vibrator arms integrally formed on the upper end surface of the columnar base and extending outward, respectively. The vibrator arm, the second vibrator arm, the third vibrator arm, and the fourth vibrator arm, the four vibrator arms are evenly distributed on the upper end surface of the columnar base and a "cross"-shaped groove is formed between the four vibrator arms; each vibrator arm has Two vertical vibrator sides and an inner concave side connected to the outer ends of the two vibrator sides and concave toward the center.

Wherein, the first dipole arm and the second dipole arm have a symmetrical structure with respect to the gap between them, the third dipole arm and the fourth dipole arm have a symmetrical structure with respect to the gap between them, and the first dipole arm The arm and the fourth dipole arm, the second dipole arm and the third dipole arm are asymmetric structures with respect to their slots; the combination of the first dipole arm and the third dipole arm and the second dipole arm and the fourth dipole arm The combination is rotated 90° relative to the central axis of the columnar base and then coincides; the first vibrator arm and the third vibrator arm are connected through the first feed core, and the second vibrator arm and the fourth vibrator arm are connected through the second feed core core connection.

Positioning through holes for feed cores are respectively opened at the joints of the columnar base and the third vibrator arm and the fourth vibrator arm. The first feed core and the second feed core are respectively installed on the feed core positioning through holes through insulating positioning rings. Correspondingly, feed connection points are respectively provided at the joints of the columnar base and the first vibrator arm and the second vibrator arm.

The diagonal length of the low frequency vibrator is 1/3 wavelength. The diagonal length is the distance between the line connecting the two outer ends of the first dipole arm and the line connecting the two outer ends of the third dipole arm.

The distance from the upper surface of the vibrator arm of the low-frequency vibrator to the lower surface of the columnar base is 1/5 wavelength; that is, the height of the radiation surface from the ground is about 1/5 wavelength; it is lower than the conventional 1/4 wavelength, and the lower the height, the less Blocking the radiation of high-frequency oscillators can reduce the thickness and occupied space of the entire multi-frequency antenna;

A positioning installation part is provided at the bottom of the lower surface of the columnar base, and the positioning installation part communicates with the positioning through hole of the feed core.

The radiation arm of the miniaturized low-frequency vibrator of the utility model adopts a concave structure toward the central axis, which can reduce the range covered by the outline of the radiation arm, and at the same time reduce the installation height of the radiation arm. The blocking of the high-frequency vibrator can make the whole antenna narrower, and can reduce the volume of the antenna while improving the performance of the antenna; and the radiation arm of the low-frequency vibrator of the utility model adopts a local asymmetric structure, which can improve the down-tilt crossover of the antenna array. Polarization ratio, and make the antenna frequency band coverage wider, can cover the low-frequency range of base station antennas at home and abroad, and improve antenna performance.

Description of drawings:

Fig. 1 is the three-dimensional schematic view of the utility model;

Fig. 2 is a top view schematic diagram of the utility model;

Fig. 3 is the exploded schematic view of the utility model;

Fig. 4 is a schematic diagram of an array of the low-frequency vibrator and the high-frequency vibrator of the present invention.

Detailed ways:

Below in conjunction with specific embodiment and accompanying drawing, the utility model is further described.

As shown in Figures 1-3, this embodiment describes a miniaturized low-frequency vibrator, wherein: the low-frequency vibrator includes a columnar base 1 and four oscillators integrally formed on the upper end surface of the columnar base 1 and extending outward The arms are respectively the first vibrator arm 11, the second vibrator arm 12, the third vibrator arm 13, and the fourth vibrator arm 14. The four vibrator arms are evenly distributed on the upper end surface of the columnar base 1 and form a " Ten"-shaped inter-slot 101; each vibrator arm has two vertical vibrator sides 102 and an inner concave side 103 connected to the outer ends of the two vibrator sides 102 and concave toward the center; wherein, the first vibrator arm 11 and The second dipole arm 12 has a symmetrical structure with respect to the gap between them, the third dipole arm 13 and the fourth dipole arm 14 have a symmetrical structure with respect to the gap between them, and the first dipole arm 11 and the second dipole arm 11 have a symmetrical structure with respect to the gap between them. The four dipole arms 14, the second dipole arm 12 and the third dipole arm 13 are asymmetric structures with respect to their slots, that is, the concave widths of the concave sides 103 of the first dipole arm 11 and the second dipole arm 12 are the same. , the concave width of the concave side 103 of the third dipole arm 13 and the fourth dipole arm 14 is the same, but the concave width of the concave side of the first dipole arm 11 and the concave side of the third dipole arm 13 are different ; The combination of the first dipole arm 11 and the third dipole arm 13 and the combination of the second dipole arm 12 and the fourth dipole arm 14 coincide after being rotated 90° relative to the central axis of the columnar base 1; the first dipole arm 11 and the third dipole arm The dipole arms 13 are connected through the first power feed core 21 , and the second dipole arms 12 and the fourth dipole arms 14 are connected through the second power feed core 22 .

Positioning through-holes 20 for feed cores are respectively opened at the joints of the columnar base 1 and the third vibrator arm 13 and the fourth vibrator arm 14, and the first feed core 21 and the second feed core 22 pass through the insulating positioning ring 23 respectively. Installed in the positioning through hole 20 of the feed core; correspondingly, feed connection points 24 are respectively provided at the joints of the columnar base 1 and the first dipole arm 11 and the second dipole arm 12 .

The diagonal length x of the low-frequency oscillator is 1/3 wavelength, and the diagonal length x is the distance between the two outer end lines of the first oscillator arm 11 and the two outer end lines of the third oscillator arm 13 The distance is smaller than the diagonal length of 1/2 wavelength in the existing commonly used products, and the overall size and volume are smaller; the shielding of high-frequency oscillator radiation is reduced, and the width of the entire multi-frequency antenna becomes narrower.

The distance from the upper surface of the vibrator arm of the low-frequency vibrator to the lower surface of the columnar base 1 is 1/5 wavelength; that is, the height y of the radiation surface from the ground is about 1/5 wavelength; it is lower than the conventional 1/4 wavelength, which can reduce the antenna's The thickness and space occupied by the radiating front.

A positioning installation part 15 is provided at the bottom of the lower surface of the columnar base 1, and the positioning installation part 15 communicates with the positioning through hole 20 of the feed core, which facilitates the positioning and assembly of the low-frequency vibrator with the circuit board or reflector plate and the direction of the wire.

As shown in Figure 4, when forming an array with the high-frequency vibrator b, the four high-frequency vibrators b are respectively located at the four concave structures of the low-frequency vibrator a, and the concave structure has little resistance to the high-frequency vibrator b, so The high-frequency radiation performance can be improved, and the volume of the antenna can be reduced as much as possible.

The radiation arm of the miniaturized low-frequency vibrator of the utility model adopts a concave structure toward the central axis, which can reduce the range covered by the outline of the radiation arm, and at the same time reduce the installation height of the radiation arm. The blocking of the high-frequency vibrator can make the whole antenna narrower, and can reduce the volume of the antenna while improving the performance of the antenna; and the radiation arm of the low-frequency vibrator of the utility model adopts a local asymmetric structure, which can improve the down-tilt crossover of the antenna array. Polarization ratio, and make the antenna frequency band coverage wider, can cover the low-frequency range of base station antennas at home and abroad, and improve antenna performance.

Claims (6)

1. A miniaturized low-frequency vibrator, characterized in that: the low-frequency vibrator includes a columnar base and four vibrator arms integrally formed on the upper end surface of the columnar base and extending outward, which are respectively the first vibrator arm, the second vibrator arm, The third vibrator arm and the fourth vibrator arm, the four vibrator arms are evenly distributed on the upper end surface of the columnar base and a "ten"-shaped groove is formed between the four vibrator arms; each vibrator arm has two vertical vibrator sides and a An inner concave side connected to the outer ends of the two vibrator sides and concave toward the center. 2. The miniaturized low-frequency oscillator according to claim 1, characterized in that: the first oscillator arm and the second oscillator arm have a symmetrical structure with respect to the gap between them, and the third oscillator arm and the fourth oscillator arm The structure of the first dipole arm and the fourth dipole arm, the second dipole arm and the third dipole arm are asymmetric structures relative to their grooves; the first dipole arm and the The combination of the three vibrator arms and the combination of the second vibrator arm and the fourth vibrator arm are rotated 90° relative to the central axis of the columnar base and overlapped; the first vibrator arm and the third vibrator arm are connected through the first feed core, The second dipole arm is connected to the fourth dipole arm through the second feed core. 3. The miniaturized low-frequency vibrator according to claim 1, characterized in that: feed core positioning through holes are respectively opened at the joints of the columnar base and the third vibrator arm and the fourth vibrator arm, and the first feed core The second feed core and the second feed core are respectively installed in the feed core positioning through hole through the insulating positioning ring; correspondingly, feed connection points are respectively provided at the joints of the columnar base and the first oscillator arm and the second oscillator arm. 4. The miniaturized low-frequency vibrator according to claim 1, characterized in that: the diagonal length of the low-frequency vibrator is 1/3 wavelength, and the diagonal length is the line connecting the two outer ends of the first vibrator arm to The distance between the two outer ends of the third dipole arm. 5. The miniaturized low-frequency vibrator according to claim 1, characterized in that: the distance from the upper surface of the vibrator arm of the low-frequency vibrator to the lower surface of the columnar base is 1/5 wavelength; that is, the height of the radiation surface from the ground is about 1/5. 5 wavelengths. 6 . The miniaturized low-frequency vibrator according to claim 1 , wherein a positioning installation part is provided on the bottom of the lower surface of the columnar base, and the positioning installation part communicates with the positioning through hole of the feed core. 7 .