Search

KR-102963218-B1 - System and Design Method of Antenna Filter Unit (AFU) of Massive MIMO Wireless Unit

KR102963218B1KR 102963218 B1KR102963218 B1KR 102963218B1KR-102963218-B1

Abstract

The present disclosure relates to an antenna filter unit (AFU) (280) coupled to an RF (Radio Frequency) Front End Module (250) for communication. The AFU (280) includes a plurality of cavity filters and a multiple-input multiple-output (MIMO) antenna unit to enable beamforming for multiple users.

Inventors

  • 굽타, 디팩
  • 코샤, 네키람
  • 반살, 암리쉬
  • 샤, 브리제쉬
  • 알, 레누카

Assignees

  • 지오 플랫폼즈 리미티드

Dates

Publication Date
20260508
Application Date
20230311
Priority Date
20220329

Claims (10)

  1. As an AFU (antenna filter unit) (280), Multiple cavity filters; and It includes a MIMO (Multiple-Input Multiple-Output) antenna unit to enable beamforming for multiple users, and The above AFU (280) is coupled to a radio frequency front end module (RFEM) (250) so as to be communicable; The above AFU (280) and the above RFEM (250) are configured on a high-speed transceiver board (HSTB) (200) with a transmission line connected as a pole between two connectors; The above HSTB (200) includes a plurality of transceivers, and digital signals received from the CCDU (Combined Central and Distributed Unit) are converted into RF (radio frequency) signals using one or more converters and processed into analog signals and transmitted to the RFEM (250); and The RFEM (250) comprises a plurality of RF switches for transmission and reception chains for processing received analog signals and transmitting output signals to the AFU (280), and one or more LNAs (low noise amplifiers), the AFU (280).
  2. In Article 1, The above AFU (280) includes a calibration PCB (Printed Circuit Board).
  3. In Article 1, The above AFU (280) is blind-mate with RFEM (250).
  4. In Article 1, The above AFU (280) includes one or more antenna ports as receiver and transmitter outputs, and the one or more antenna ports are connected to individual cavity filters to achieve a 32T32R configuration that provides a steeper roll-off outside the operating band.
  5. In Paragraph 4, The above HSTB (200) is disposed within a metal housing having a covering on a bottom surface, and the AFU (280) is configured to be coupled to the metal housing from the bottom surface, and the metal housing is an aluminum metal housing, AFU (280).
  6. delete
  7. delete
  8. delete
  9. delete
  10. delete

Description

System and Design Method of Antenna Filter Unit (AFU) of Massive MIMO Wireless Unit [0001] The present disclosure generally relates to network devices, and more specifically to the design and architecture of an antenna filter unit (AFU) of a massive multiple-input multiple-output (MIMO) radio unit. [0002] The following description of the related technology is intended to provide background information regarding the field of the present disclosure. This section may include certain aspects of the technology that may be related to the various features of the present disclosure. However, it should be recognized that this section is intended only to enhance the reader's understanding of the present disclosure and is not intended to acknowledge prior art. [0003] 5G (Fifth Generation) communication systems are believed to be implemented in sub-6 GHz and higher frequency bands, such as the 60 GHz band, to achieve higher data rates. To reduce radio wave propagation loss and increase transmission distance, beamforming, massive MIMO (multiple-input multiple-output), FD-MIMO (Full Dimensional MIMO), array antennas, analog beamforming, and large antenna techniques are discussed for use in 5G communication systems. [0004] Conventional antenna filter units are unable to perform multi-pass band and various stopband processing capabilities. Finding the optimal balance of RF (radio frequency) components utilizing high-performance capacitances along with inherently wide operating bandwidths is a challenge. Additionally, conventional antenna filter units are bulky and require high power for operation. Typically, cable assemblies are used for signal transmission in conventional antenna filters. However, the quality and performance requirements associated with cable assemblies are also very high, and they require more space for operation. [0005] Therefore, in the field of this technology, there is a need to provide a system and method that can alleviate problems associated with prior art. [0006] In one aspect, the present disclosure relates to an antenna filter unit (AFU) operably coupled with a radio frequency front end module (RFEM). The AFU includes a multiple-input multiple-output (MIMO) antenna unit and a plurality of cavity filters to enable beam forming for multiple users. [0007] In an example, the AFU may further include a calibration PCB (Printed Circuit Board). [0008] In the example, the AFU can be blind mated with the RFEM. [0009] In an embodiment, the AFU and RFEM may be configured on a High Speed Transceiver Board (HSTB) with a transmission line connecting two connectors as a pole. The AFU may include one or more antenna ports as receiver and transmitter outputs. [0010] In an embodiment, the AFU may include one or more antenna ports as receiver and transmitter outputs, wherein one or more antenna ports are connected to individual cavity filters to achieve a 32T32R configuration that provides a steeper roll-off outside the operating band. [0011] In an embodiment, the HSTB may include a plurality of transceivers. Digital signals received from the CCDU (Combined Central and Distributed Unit) may be converted into RF signals using one or more converters and processed into analog signals and transmitted to the RFEM. [0012] In an embodiment, the RFEM may include one or more low noise amplifiers (LNAs) and a plurality of RF switches for the transmit and receive chains to process the received analog signals and transmit the output signals to the AFU. [0013] In an embodiment, the HSTB may be placed in a metal housing having a covering on the bottom surface, and the AFU may be configured to be coupled to the metal housing from the bottom surface, and the metal housing may be an aluminum metal housing. [0014] In one aspect, the present disclosure relates to user equipment that is communicably coupled to a MIMO radio unit. The user equipment may include one or more main processors that are communicably coupled to one or more processors of the MIMO radio unit via a network, and the one or more main processors are coupled to a memory, wherein the memory stores instructions, and the instructions, when executed by the one or more main processors, cause the user equipment to transmit one or more RF (radio frequency) control signals to the MIMO radio unit, and an antenna filter unit (AFU) is communicably coupled to the MIMO radio unit, and the AFU is composed of a MIMO antenna unit and a plurality of cavity filters for enabling beamforming for a plurality of users, and the AFU is communicably coupled to a radio frequency front end module (RFEM) of the MIMO radio unit. [0015] In one aspect, the present disclosure relates to a non-transient computer-readable medium comprising processor-executable instructions that cause a processor to transmit one or more RF (radio frequency) control signals to a MIMO (multiple-input multiple-output) radio unit, wherein an antenna filter unit (AFU) is communicably coupled to the MIMO radio unit, the AF