CN-224204365-U - Ku wave band patch antenna integrated structure

Abstract

The utility model discloses a Ku wave band patch antenna integrated structure, and relates to the technical field of patch antennas. The Ku band patch antenna integrated structure comprises a wireless radiating unit array, a mixed feed network and a power division synthesis module, wherein the wireless radiating unit array is arranged in a regular matrix and used for realizing the transmission and the reception of multi-beam signals, the mixed feed network comprises a strip line layer and a microstrip line layer, the strip line layer is arranged inside an antenna substrate, the microstrip line layer is arranged on the surface of the antenna substrate and used for realizing signal coupling through a vertical transition structure, and the power division synthesis module is integrated at the tail end of the mixed feed network and used for uniformly distributing transmission excitation signals to each radiating unit and synthesizing received signals. The Ku-band patch antenna integrated structure provided by the utility model is used for realizing the cooperative promotion of broadband, high integration level and high-precision scanning performance.

Inventors

• WU ZEYU
• SUN JINLI
• WANG ZONGHAO
• TANG WENJIE

Assignees

• 南京瑞达电子科技有限公司

Dates

Publication Date

20260505

Application Date

20250618

Claims (6)

1. 1. A Ku band patch antenna integrated structure, comprising: the wireless radiation unit array is arranged in a regular matrix and is used for realizing the transmission and the reception of multi-beam signals; The hybrid feed network comprises a strip line layer and a microstrip line layer, wherein the strip line layer is arranged inside an antenna substrate, the microstrip line layer is arranged on the surface of the antenna substrate, and signal coupling is realized through a vertical transition structure; And the power division synthesis module is integrated at the tail end of the hybrid feed network and is used for uniformly distributing the emission excitation signals to each radiation unit and synthesizing the received signals.
2. 2. The Ku band patch antenna integrated structure of claim 1, wherein the strip line layers of the hybrid feed network are isolated by low-loss dielectric, the distance between adjacent strip lines meets the signal isolation requirement, and the microstrip line layers are welded with an external connector through a gradual change structure.
3. 3. The Ku band patch antenna integrated structure of claim 1, wherein the antenna substrate is a multi-layer composite structure comprising at least one dielectric constant stabilized insulation base layer, the surface of the base layer is coated with copper to form radiating elements and feed lines, and the edges of the base layer are provided with conductive oxide layers to enhance the conductivity of the structure.
4. 4. The Ku band patch antenna integrated structure of claim 1, wherein the radiating element is a rectangular patch element, and adjacent patch elements are connected through a T-type power divider of the hybrid feed network to form a constant-amplitude in-phase feed array.
5. 5. The Ku band patch antenna integrated structure of claim 1, wherein the vertical transition structure comprises a metallized via penetrating the antenna substrate, one end of the metallized via being soldered to the microstrip layer end, the other end being in an impedance matching connection with the strip layer start.
6. 6. The Ku-band patch antenna integrated structure of claim 1, wherein the power division and synthesis module comprises a multi-stage cascade power divider, each stage of the divider adopts a symmetrical binary tree topology, and the transmission line length of each stage of the divider meets the phase consistency requirement.

Description

Ku wave band patch antenna integrated structure Technical Field The utility model relates to the technical field of patch antennas, in particular to a Ku-band patch antenna integrated structure. Background With the development of modern communication and radar technology, higher requirements are put on antenna performance, in the communication field, high-frequency band and high-capacity data transmission require the antenna to have broadband and high-gain characteristics, and in the radar field, high-precision target detection depends on the large-angle scanning capability and low side lobe characteristics of the antenna. Phased array antennas are the dominant approach due to their beam controllability, but they still have the following bottlenecks in terms of integration level, bandwidth and scanning performance: the traditional feed structure is complex, when a single type transmission line (such as a pure microstrip line or a strip line) is adopted, low-loss transmission and convenient interface connection are difficult to be considered, so that the processing cost is high and the signal consistency is poor; The material compatibility is insufficient, namely, when the multi-layer circuit boards are cascaded, the dielectric constant fluctuation of the substrate material can introduce extra loss to influence the stability of the frequency response of the antenna; The beam control precision is limited by accumulating phase errors of a feed network of a traditional array, so that the beam pointing deviation is increased during large-angle scanning, the side lobe level is increased, and the target detection capability is reduced; In the prior art, part of antennas improve performance by adding phase shifters or complex matching networks, but this can significantly increase structural complexity and cost, and it is difficult to meet the requirements of miniaturization and low power consumption. Therefore, an antenna design scheme that combines integration, broadband and high-precision scanning is needed. Disclosure of Invention The utility model aims to provide a Ku-band patch antenna integrated structure which is used for realizing the cooperative improvement of broadband, high integration level and high-precision scanning performance. In order to achieve the above object, the present utility model provides the following technical solutions: a Ku band patch antenna integrated structure comprising: the wireless radiation unit array is arranged in a regular matrix and is used for realizing the transmission and the reception of multi-beam signals; The hybrid feed network comprises a strip line layer and a microstrip line layer, wherein the strip line layer is arranged inside an antenna substrate, the microstrip line layer is arranged on the surface of the antenna substrate, and signal coupling is realized through a vertical transition structure; And the power division synthesis module is integrated at the tail end of the hybrid feed network and is used for uniformly distributing the emission excitation signals to each radiation unit and synthesizing the received signals. Optionally, the strip line layers of the hybrid feed network are isolated by adopting low-loss dielectric, the distance between adjacent strip lines meets the requirement of signal isolation, and the microstrip line layers are welded and connected with an external connector through a gradual change structure. Optionally, the antenna substrate is a multilayer composite structure and comprises at least one insulating base layer with stable dielectric constant, the surface of the base layer is covered with copper to form a radiation unit and a feeder line, and the edge of the base layer is provided with a conductive oxide layer to enhance the conductivity of the structure. Optionally, the radiation unit is a rectangular patch unit, and adjacent patch units are connected through a T-shaped power divider of the hybrid feed network to form a constant-amplitude in-phase feed array. Optionally, the vertical transition structure includes a metallized via penetrating through the antenna substrate, one end of the metallized via is welded with the end of the microstrip line layer, and the other end of the metallized via is connected with the beginning end of the strip line layer in an impedance matching manner. Optionally, the power division and synthesis module comprises a multi-stage cascade power divider, each stage of the power divider adopts a symmetrical binary tree topology structure, and the transmission line length of each stage of the power divider meets the requirement of phase consistency. Compared with the prior art, the Ku-band patch antenna integrated structure has the characteristics of high frequency band, combination of a mixed feed network and low-loss materials, widening of the effective working frequency band of the antenna, meeting of multimode communication and radar detection requirements, high-precision scanning, symmetrical power