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EP-4740268-A1 - AN APERTURE COUPLED ANTENNA

EP4740268A1EP 4740268 A1EP4740268 A1EP 4740268A1EP-4740268-A1

Abstract

The present invention describes an aperture coupled antenna [100]. In one example, the aperture coupled antenna [100] may include at least one of a plurality of patch layers, a feed network and ground later, and a reflector layer. The patch layer may include a radiating patch element, and the feed network and ground layer may include an aperture with a cutout. The aperture coupled antenna [100] may further include a top metallic cage structure [102] and a bottom metallic cage structure [104]. The top metallic cage structure [102] may surround the radiating patch element and the bottom metallic cage structure [104] may be on a bottom side of the feed network and ground layer.

Inventors

  • VERMA, VIJAY
  • BHATNAGAR, AAYUSH
  • BHATNAGAR, PRADEEP KUMAR
  • Penta, Praveen
  • GUPTA, SHUBHAM KUMAR

Assignees

  • Jio Platforms Limited

Dates

Publication Date
20260513
Application Date
20240621

Claims (7)

  1. 1. An aperture coupled antenna [100] comprising: at least one of a plurality of patch layers, a feed network and ground layer, and a reflector layer, wherein the patch layer comprises a radiating patch element and the feed network and ground layer comprises an aperture with a cutout; a top metallic cage structure [102] surrounding the radiating patch element; and a bottom metallic cage structure [104] on a bottom side of the feed network and ground layer.
  2. 2. The aperture coupled antenna [100] as claimed in claim 1, wherein at least one of the plurality of patch layers are arranged in a stack, the stack comprising the at least one of the plurality of patch layers placed above each other.
  3. 3. The aperture coupled antenna [100] as claimed in claim 1, wherein the top metallic cage structure [102] comprises a plurality of electrically conductive walls.
  4. 4. The aperture coupled antenna [100] as claimed in claim 1, further comprising a first substrate and a second substrate, the second substrate being arranged over the first substrate, wherein, the patch layer is attached to a bottom portion of the second substrate; a feed network of the feed network and ground layer, is printed on a bottom portion of the first substrate, and a ground layer of the feed network and ground layer is printed on a top portion of the first substrate; and the reflector layer is arranged below the bottom portion of the first substrate.
  5. 5. The aperture coupled antenna [100] as claimed in claim 1, wherein the aperture of the feed network and ground layer further is a cross-shaped aperture.
  6. 6. The aperture coupled antenna [100] as claimed in claim 5, wherein the cross-shaped aperture is configured to provide electromagnetic coupling between the feed network and ground layer and the radiating patch element.
  7. 7. The aperture coupled antenna [100] as claimed in claim 1, wherein the cutout of the aperture of the feed network and ground layer is one of a square-shaped, a circle-shaped, and a diamond-shaped cutout.

Description

AN APERTURE COUPLED ANTENNA FIELD OF THE INVENTION [0001] The present invention generally relates to technologies for enhancing functioning of an antenna module of a wireless communication system. More particularly, embodiments of the present disclosure relate to an aperture coupled antenna. BACKGROUND OF THE INVENTION [0002] The following description of related art is intended to provide background information pertaining to the field of the invention. This section may include certain aspects of the art that may be related to various features of the present invention. However, it should be appreciated that this section be used only to enhance the understanding of the reader with respect to the present invention, and not as admissions of prior art. [0003] Wireless communication technology has rapidly evolved over the past few decades, with each generation bringing significant improvements and advancements. The first generation of wireless communication technology was based on analog technology and offered only voice services. However, with the advent of the second-generation (2G) technology, digital communication and data services became possible, and text messaging was introduced. The third generation (3G) technology marked the introduction of high-speed internet access, mobile video calling, and location-based services. The fourth generation (4G) technology revolutionized wireless communication with faster data speeds, better network coverage, and improved security. Currently, the fifth generation (5G) technology is being deployed, promising even faster data speeds, low latency, and the ability to connect multiple devices simultaneously. With each generation, wireless communication technology has become more advanced, sophisticated, and capable of delivering more services to its users. [0004] Small cells use low-power and short-range wireless transmission systems (or base stations). A small geographical area or small-proximity indoor and outdoor space is covered by the small cells in the 5G networks. Also, 5G new radio (NR) outdoor small cell (ODSC) is medium power gNB which operates in micro class (typically 6.25 W or 38dBm per antenna port). It complements macro-level wide-area solutions for coverage and capacity and is particularly useful in hot zone/hot spot areas with high traffic and quality of service (QoS) demands. [0005] While a Macro gNB can offer satisfactory coverage and capacity in many situations, dense urban environments with tall buildings may experience intermittent mobile coverage issues. Simply adding more radios becomes impractical. Similarly, meeting the high capacity demands of numerous mobile users in commercial hubs such as malls, hotels, office blocks, and transportation hubs poses significant challenges. In such scenarios, deploying 5G Outdoor small cell (ODSC) solutions in hotspot locations becomes essential to enhance coverage and capacity, complementing the capabilities of 4G/5G gNB. In addition to this, there could be geographical areas outdoor where the coverage of Macros is not present. [0006] This efficiently addresses the increased traffic demands in these areas. This necessitates an efficient antenna design which has broadband band constant radiation characteristics and Aperture Coupled design technology is a design approach. However, there are limitations that when the single aperture coupled element structure is extended to array design (e.g. 4T4R), the Port-to-port Isolation, Bandwidth and XPD parameters are degraded. There is a requirement in the state of the art to provide as solution for port-to-port isolation, cross polarization ratio (XPD) and band width improvement when the single aperture coupled patch element is extended to antenna array structure. OBJECTS OF THE INVENTION [0007] Some of the objects of the present invention, which at least one embodiment disclosed herein satisfies are listed herein below. [0008] It is an object of the present disclosure to provide methods and systems for improving performance of an aperture coupled antenna array. [0009] It is another object of the present disclosure to provide a solution that can provide port-to- port isolation, cross polarization ratio (XPD) and band width improvement in Aperture Coupled Patch antenna array. [0010] It is another object of the present disclosure to provide a solution that can provide improved port to port isolation by using a bottom metallic cage structure. [0011] It is another object of the present disclosure to provide a solution that can improve XPD by using a top metallic cage structure such that the top metallic structure also benefits in controlling the horizontal beam width. [0012] It is yet another object of the present disclosure to provide a solution that can provide an improved antenna band width by incorporating a slot of square (or circle or diamond) in the X- shaped aperture. SUMMARY [0013] This section is provided to introduce certain implementations of the present invention