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CN-121983781-A - Broadband filter vibrator

CN121983781ACN 121983781 ACN121983781 ACN 121983781ACN-121983781-A

Abstract

The invention provides a broadband filter oscillator which comprises a radiation sheet, a feed unit and a supporting seat, wherein the supporting seat is provided with a through hole, the feed unit is arranged in the through hole in a penetrating way, one end of the feed unit is electrically connected with the radiation sheet, the radiation sheet comprises a dielectric plate and four metal radiation arms arranged on the dielectric plate, any metal radiation arm is provided with an L-shaped filter branch knot, the technical problem to be solved by the invention is that the prior base station antenna technology is to meet the dual-frequency requirement, an embedded array structure with high-frequency antenna units embedded between low-frequency antenna units is adopted, the interference among the antennas which is difficult to eliminate is easy to generate, and the distortion of a high-frequency directional diagram is caused, so that the practical application effect of the base station antenna technology is affected.

Inventors

  • LIN CHUAN
  • JIANG HONGYI
  • WANG ENQING
  • WANG ZHIHAO
  • JIANG WEIDI
  • SHEN ZHIJUN

Assignees

  • 宁波立捷电子有限公司

Dates

Publication Date
20260505
Application Date
20260205

Claims (9)

  1. 1. The broadband filter oscillator is characterized by comprising a radiation sheet (100), a feed unit (200) and a supporting seat (300); the supporting seat (300) is provided with a through hole (310), the power feeding unit (200) is arranged in the through hole (310) in a penetrating mode, and one end of the power feeding unit (200) is electrically connected with the radiation sheet (100); The radiation piece (100) comprises a dielectric plate (110) and four metal radiation arms (120) arranged on the dielectric plate (110); Wherein any one of the metal radiating arms (120) is provided with an L-shaped filtering branch (121).
  2. 2. The wideband filter vibrator of claim 1, wherein the filter element comprises a plurality of filters, Each metal radiating arm (120) is provided with at least one L-shaped filtering branch (121), and the L-shaped filtering branch (121) and the metal radiating arm (120) are integrally formed.
  3. 3. The wideband filter vibrator of claim 1, wherein the filter element comprises a plurality of filters, The four metal radiation arms (120) are symmetrically distributed by taking the center of the dielectric plate (110) as the axis, and are arranged in a pair-by-pair mode.
  4. 4. The wideband filter vibrator of claim 3, wherein the filter element comprises a plurality of filters, The metal radiating arm (120) is close to a first end part of the center axis of the dielectric plate (110) and is provided with a first connecting hole (122), the dielectric plate (110) is provided with a second connecting hole (111) corresponding to the first connecting hole (122), and the metal radiating arm (120) and the dielectric plate (110) pass through the first connecting hole (122) and the second connecting hole (111) through rivets at one time to realize detachable fixation.
  5. 5. The wideband filter vibrator of claim 3, wherein the filter element comprises a plurality of filters, The end part of the metal radiation arm (120) far away from the center axis of the dielectric plate (110) is provided with a third connecting hole (123), the position of the support seat (300) corresponding to the third connecting hole (123) is provided with a fourth connecting hole (320), and the metal radiation arm (120) and the support seat (300) sequentially penetrate through the third connecting hole (123) and the fourth connecting hole (320) through rivets to realize detachable fixation.
  6. 6. The wideband filter vibrator according to any one of claims 1-5, wherein, The dielectric plate (110) is made of a PCB material, the PCB material is of a single-sided copper-clad structure, and the feeding unit (200) and the dielectric plate (110) are fixed in a welding mode.
  7. 7. The wideband filter vibrator according to any one of claims 1-5, wherein, The feed unit (200) is made of a PCB material, and the PCB material is of a double-sided copper-clad structure.
  8. 8. The wideband filter vibrator according to any one of claims 1-5, wherein, The metal radiating arms (120) are punched by metal sheets with the thickness of 1 mm.
  9. 9. The wideband filter vibrator according to any one of claims 1-5, wherein, The supporting seat (300) is made of POM material through injection molding.

Description

Broadband filter vibrator Technical Field The invention relates to the technical field of mobile communication, in particular to a broadband filter oscillator. Background With the continuous iteration and development of mobile communication technology, 2G, 3G, 4G and 5G mobile communication systems have formed long-term co-existence, co-commercial formats. Different mobile communication systems correspond to different working frequency bands, wherein the low-frequency mobile communication system comprises GSM850 (284 GHz-894 GHz), GSM900 (890MHz-960MHz), LTE700 (698 MHz-862 MHz), 5G700MHz (703 MHz-803 MHz), and the higher-frequency mobile communication system comprises GSM1800 (1710MHz-1920MHz), TDSCDMA/WCDMA/CDMA2000 (1880 MHz-2170 MHz), and the like. In order to ensure that the base station can effectively cover all mobile communication systems and ensure the communication quality of different system users, the base station antenna needs to have the capability of adapting to the operation of multiple systems, specifically, needs to realize the coverage of two specific bandwidths, namely, one is 698 MHz-960 MHz frequency band and the other is 1695 MHz-2690 MHz frequency band, namely, the base station antenna needs to meet the design requirement of double bandwidth. However, in the related art, at least one problem is that in order to meet the dual-frequency requirement, the existing base station antenna technology often adopts an embedded array structure in which high-frequency antenna units are embedded between low-frequency antenna units, so that interference among antennas which are difficult to eliminate is easily generated, and high-frequency directional diagram distortion is caused, thereby influencing the practical application effect of the base station antenna technology. Disclosure of Invention The invention solves the technical problem that the prior base station antenna technology adopts an embedded array structure in which high-frequency antenna units are embedded between low-frequency antenna units to meet the double-frequency requirement, so that the interference among the antennas which is difficult to eliminate is easy to generate, and the high-frequency directional diagram is distorted, thereby influencing the practical application effect of the base station antenna technology. In order to solve the technical problems, in one aspect, the present invention provides a wideband filter oscillator, which includes a radiation sheet, a feed unit and a support base; the support seat is provided with a through hole, the power supply unit is arranged in the through hole in a penetrating way, and one end of the power supply unit is electrically connected with the radiation sheet; The radiation sheet comprises a dielectric plate and four metal radiation arms arranged on the dielectric plate; wherein, any metal radiation arm is provided with L type filtering branch knot. Compared with the prior art, the technical effect achieved by adopting the technical scheme is that the L-shaped filtering branch is arranged on any metal radiating arm of the broadband filtering vibrator, the radiating sheet structure formed by the dielectric plate and the four metal radiating arms is combined, the selective filtering effect can be formed on electromagnetic wave signals in a specific frequency band, out-of-band interference signals generated when high-frequency antenna units and low-frequency antenna units are assembled are effectively restrained, meanwhile, the feed unit penetrates through the through hole of the supporting seat and is electrically connected with the radiating sheet, stability of vibrator signal transmission and reliability of the structure are guaranteed, the problem that vibrator radiation performance is attenuated due to the fact that the L-shaped filtering branch is additionally arranged is avoided, the interference problem among antennas in an embedded type array structure is solved, the technical defect of high-frequency directional diagram distortion is overcome, and the practical application effect and signal transmission quality of the base station antenna are improved. In one example of the present invention, each metal radiating arm is provided with at least one L-shaped filtering branch, and the L-shaped filtering branch is integrally formed with the metal radiating arm. Compared with the prior art, the technical effect achieved by adopting the technical scheme is that the L-shaped filtering branches are arranged on each metal radiating arm to form a full-dimension filtering structure, and compared with the scheme that the filtering branches are arranged on only part of the metal radiating arms, the full-dimension filtering structure can be used for carrying out more comprehensive selective filtering on high-frequency and low-frequency signals, so that the suppression capability on out-of-band interference signals among antennas is enhanced, and the problem of high-frequency pattern disto