Waveguide antenna element-based beam forming phased array antenna system for millimeter wave communication

Patent metadata

Field	Value
Publication number	US-11588254-B2
Application number	US-202117365037-A
Country	US
Kind code	B2
Filing date	Jul 1, 2021
Priority date	Feb 26, 2018
Publication date	Feb 21, 2023
Grant date	Feb 21, 2023

Abstract

An antenna system, includes a first substrate, a plurality of chips, and a waveguide antenna element based beam forming phased array. The waveguide antenna element based beam forming phased array includes a plurality of radiating waveguide antenna cells. Each radiating waveguide antenna cell includes a plurality of pins that are connected to ground. A body of each radiating waveguide antenna cell corresponds to the ground. The plurality of chips are electrically connected with the plurality of pins and the ground of each of the plurality of radiating waveguide antenna cells to control beamforming through a second end of the plurality of radiating waveguide antenna cells.

First claim

What is claimed is:

1. An antenna system, comprising:
a first substrate;
a plurality of chips; and
a waveguide antenna element based beam forming phased array that comprises a plurality of radiating waveguide antenna cells,
wherein each radiating waveguide antenna cell comprises a plurality of pins that are connected to ground,
wherein a body of the each radiating waveguide antenna cell corresponds to the ground, and
wherein the plurality of chips are electrically connected with the plurality of pins and the ground of each of the plurality of radiating waveguide antenna cells to control beamforming through a second end of the plurality of radiating waveguide antenna cells.

2. The antenna system according to claim 1 , wherein the waveguide antenna element based beam forming phased array is one-piece structure of four-by-four waveguide array comprising sixteen radiating waveguide antenna cells in a first layout, wherein the one-piece structure of four-by-four waveguide array corresponds to a unitary body of the waveguide antenna element based beam forming phased array.

3. The antenna system according to claim 1 , wherein the waveguide antenna element based beam forming phased array is one-piece structure of eight-by-eight waveguide array comprising sixty four radiating waveguide antenna cells in a first layout, wherein the one-piece structure of eight-by-eight waveguide array corresponds to a unitary body of the waveguide antenna element based beam forming phased array.

4. The antenna system according to claim 1 , wherein the waveguide antenna element based beam forming phased array is one-piece structure of N-by-N waveguide array comprising M number of radiating waveguide antenna cells in a first layout, wherein N is a positive integer and M is N to the power of 2.

5. The antenna system according to claim 1 , wherein the waveguide antenna element based beam forming phased array further comprises a plurality of non-radiating dummy waveguide antenna cells in a first layout, wherein the plurality of non-radiating dummy waveguide antenna cells are positioned at edge regions surrounding the plurality of radiating waveguide antenna cells in the first layout to enable even radiation for millimeter wave communication through the second end of each of the plurality of radiating waveguide antenna cells irrespective of positioning of the plurality of radiating waveguide antenna cells in the first layout.

6. The antenna system according to claim 5 , further comprising a second substrate, wherein the plurality of non-radiating dummy waveguide antenna cells in the first layout are mounted on the second substrate that is different than the first substrate.

7. The antenna system according to claim 1 , further comprising a system board having an upper surface and a lower surface, wherein the upper surface of the system board comprises a plurality of electrically conductive connection points to connect to the ground of each of the plurality of radiating waveguide antenna cells of the waveguide antenna element based beam forming phased array using electrically conductive wiring connections that passes through the first substrate, wherein the first substrate is positioned between the waveguide antenna element based beam forming phased array and the system board.

8. The antenna system according to claim 7 , further comprising a heat sink that is attached to the lower surface of the system board, wherein the heat sink have a comb-like structure in which a plurality of protrusions of the heat sink passes through a plurality of perforations in the system board such that the plurality of chips are in contact to the plurality of protrusions of the heat sink to dissipate heat from the plurality of chips through the heat sink.

9. The antenna system according to claim 7 , wherein the first substrate comprises an upper side and a lower side, wherein a first end of the plurality of radiating waveguide antenna cells of the waveguide antenna element based beam forming phased array is mounted on the upper side of the first substrate, and the plurality of chips are positioned between the lower side of the first substrate and the upper surface of the system board.

10. The antenna system according to claim 1 , wherein the first substrate comprises an upper side and a lower side, wherein the plurality of chips and the plurality of radiating waveguide antenna cells of the waveguide antenna element based beam forming phased array are positioned on the upper side of the first substrate.

11. The antenna system according to claim 10 , wherein a vertical length between the plurality of chips and a first end of the plurality of radiating waveguide antenna cells of the waveguide antenna element based beam forming phased array is less than a defined threshold to reduce insertion loss between the plurality of radiating waveguide antenna cells of the waveguide antenna element based beam forming phased array and the plurality of chips, based on the positioning of the plurality of radiating waveguide antenna cells of the waveguide antenna element based beam forming phased array and the plurality of chips on a same side of the first substrate.

12. The antenna system according to claim 10 , wherein a unitary body of the waveguide antenna element based beam forming phased array has a metallic electrically conductive surface that acts as a heat sink to dissipate heat from the plurality of chips to atmospheric air through the metallic electrically conductive surface of the waveguide antenna element based beam forming phased array, based on a contact of the plurality of chips with the plurality of radiating waveguide antenna cells of the waveguide antenna element based beam forming phased array on the upper side of the first substrate.

13. The antenna system according to claim 1 , wherein the plurality of pins in each radiating waveguide antenna cell are protrude pins that protrude from a first end from a level of the body of the corresponding radiating waveguide antenna cell to establish a firm contact with the first substrate.

14. The antenna system according to claim 1 , the waveguide antenna element based beam forming phased array is a dual-polarized open waveguide array antenna configured to transmit and receive radio frequency waves for millimeter wave communication in both horizontal and vertical polarizations or as left hand circular polarization (LHCP) or right hand circular polarization (RHCP).

15. The antenna system according to claim 1 , wherein the plurality of pins in each radiating waveguide antenna cell includes a pair of vertical polarization pins that acts as a first positive terminal and a first negative terminal and a pair of horizontal polarization pins that acts as a second positive terminal and a second negative terminal, wherein the pair of vertical polarization pins and the pair of horizontal polarization pins are utilized for dual-polarization.

16. The antenna system according to claim 1 , wherein the plurality of chips comprises a set of receiver (Rx) chips, a set of transmitter (Tx) chips, and a signal mixer chip.

17. The antenna system according to claim 1 , wherein the plurality of chips are configured to control propagation and a direction of a radio frequency (RF) beam in millimeter wave frequency through the second end of the plurality of radiating waveguide antenna cells for millimeter wave communication between the antenna system and a millimeter wave-based communication device, wherein the second end is an open end of the plurality of radiating waveguide antenna cells for millimeter wave communication.

Assignees

• Movandi Corp

Inventors

• Yoon Seunghwan
• Rofougaran Ahmadreza
• Gharavi Sam
• Sridharan Kartik
• Shin Donghyup
• Shirinfar Farid
• Wu Stephen
• Rofougaran Maryam
• Besoli Alfred Grau
• Adas Enver
• Wang Zhihui

Classifications

• H01Q21/24

  Combinations of antenna units polarised in different directions for transmitting or receiving circularly and elliptically polarised waves or waves linearly polarised in any direction {(circularly polarised patch antennas H01Q9/0428; circularly polarised horns H01Q13/0241; cross-polarised horns H01Q13/0258; polarisation converters H01Q15/242; cross-polarised rear feeds H01Q19/136; crossed polarisation dual antenna H01Q25/001)} · CPC title

• H01Q21/22 Primary

  Antenna units of the array energised non-uniformly in amplitude or phase, e.g. tapered array or binomial array · CPC title

• H01Q21/0025 Primary

  Modular arrays · CPC title

• H01Q1/523

  between antennas of an array · CPC title

• H01Q21/064

  using horn or slot aerials (slotted waveguides arrays H01Q21/005) · CPC title