Millimeter-wave communications on a multifunction platform

• US 9,912,061 B2
• Filed: 05/18/2016
• Issued: 03/06/2018
• Est. Priority Date: 05/18/2016
• Status: Active Grant

• Current Assignee: International Business Machines Corporation
• Original Assignee: International Business Machines Corporation
• Inventors: Gu, Xiaoxiong, Liu, Duixian, Sadhu, Bodhisatwa, Valdes Garcia, Alberto
• Primary Examiner(s): TALUKDER, MD K
• Application Number:
  US15/158,055
• Publication Number:
  US 20170338563A1
• Time in Patent Office: 657 Days
• Field of Search: 4552771, 4552791
• CPC Class Codes: H01Q 1/242 specially adapted for hand-held use
• CPC Class Codes: H01Q 1/48 Earthing means; Earth screens; Counterpoises
• CPC Class Codes: H01Q 21/08 the units being spaced along or adjacent to a rectilinear path waveguide fed H01Q21/0037
• CPC Class Codes: H01Q 9/0407 Substantially flat resonant element parallel to ground plane, e.g. patch antenna dipole H01Q9/285; monopole H01Q9/40
• CPC Class Codes: H04B 2001/0408 with power amplifiers

Abstract

A millimeter-wave (MMW) communication system may include an antenna array structure operating within a MMW band, having both a first antenna coupling point and a second antenna coupling point, whereby the first and the second location of the antenna coupling points are within a coplanar surface on which the antenna array structure is formed. The system may further include a first MMW transmitter that couples a first data modulated MMW signal to the first antenna coupling point and a second MMW transmitter that couples a second data modulated MMW signal to the second antenna coupling point. Coupling the first data modulated MMW signal to the first antenna coupling point generates a first MMW radio signal transmitted at a first propagation direction and coupling the second data modulated MMW signal to the second antenna coupling point generates a second MMW radio signal transmitted at a second propagation direction.

Claims

1. A millimeter-wave (MMW) communication system, comprising:

an antenna array structure operating within a MMW band, the antenna array structure having both a first antenna coupling point at a first location of the antenna array structure and a second antenna coupling point at a second location of the antenna array structure, the first and the second location of the antenna coupling points being within a coplanar surface on which the antenna array structure is formed;

a first MMW transmitter device that couples a first data modulated MMW signal to the first antenna coupling point;

a second MMW transmitter device that couples a second data modulated MMW signal different to the first data modulated MMW signal to the second antenna coupling point;

wherein coupling the first data modulated MMW signal to the first antenna coupling point generates a first MMW radio signal transmitted at a first propagation direction by the antenna array structure at a first operating frequency, and

wherein coupling the second data modulated MMW signal to the second antenna coupling point generates a second MMW radio signal transmitted at a second propagation direction by the antenna array structure at a second operating frequency, the second propagation direction being different to the first propagation direction.

2. The system of claim 1, wherein the first propagation direction and the second propagation direction are located within a plane that is perpendicular to the coplanar surface, the first propagation direction having a first altitude angle and the second propagation direction having a second altitude angle, the second altitude angle including an angle value that is different than the first altitude angle.

3. The system of claim 1, wherein the first MMW transmitter device comprises:

a first baseband signal generator;

a first MMW signal generator that generates the first operating frequency;

a first frequency mixer having a first mixer input, a second mixer input, and a first mixer output, wherein the first mixer input is coupled to the first baseband signal generator and the second mixer input is coupled to the first MMW signal generator; and

a first power amplifier having a first amplifier input and a first amplifier output, the first amplifier input coupled to the first mixer output and the first amplifier output coupled to the first antenna coupling point.

4. The system of claim 3, wherein the second MMW transmitter device comprises:

a second baseband signal generator;

a second MMW signal generator that generates the second operating frequency;

a second frequency mixer having a third mixer input, a fourth mixer input, and a second mixer output, wherein the third mixer input is coupled to the second baseband signal generator and the fourth mixer input is coupled to the second MMW signal generator; and

a second power amplifier having a second amplifier input and a second amplifier output, the second amplifier input coupled to the second mixer output and the second amplifier output coupled to the second antenna coupling point.

5. The system of claim 4, further comprising:

a first switch located between the first frequency mixer and the first antenna coupling point;

a second switch located between the second frequency mixer and the second antenna coupling point; and

a switch control unit including a first mode of operation and a second mode of operation,

wherein during the first mode of operation only one of the first switch and the second switch is actuated to a closed position, and wherein during the second mode of operation both the first switch and the second switch are actuated to a closed position.

6. The system of claim 1, wherein the antenna array structure comprises a grid antenna having a plurality of loops, the grid antenna configured to operate within a millimeter-wave band of 57-66 GHz.

7. The system of claim 1, wherein the antenna array structure comprises a series fed patch antenna configured to operate within a millimeter-wave band of 57-66 GHz.

8. The system of claim 1, wherein the antenna array structure comprises a coupled patch antenna configured to operate within a millimeter-wave band of 57-66 GHz.

9. The system of claim 1, further comprising an outer surface area, wherein the antenna array structure includes radiator elements that are all located directly on the outer surface area.

10. The system of claim 9, wherein the outer surface comprises an outer surface of a table.

11. The system of claim 9, wherein the outer surface comprises an outer surface of a portable electronic device.

12. The system of claim 1, further comprising:

a first switch that receives the first MMW data modulated signal;

a first antenna feed line having a first end that is coupled to the first switch, wherein the first switch switches the first MMW data modulated signal to the first end of the first antenna feed line; and

a first antenna probe coupled to a second end of the first antenna feed line, the first antenna probe coupling the first MMW data modulated signal received from the second end of the first antenna feedline to the first antenna coupling point,

wherein the first antenna feed line includes a length of nλ

₁/2 from the first end of the first antenna feed line to the second end of the first antenna feed line, λ

₁ being an effective carrier frequency wavelength corresponding to the first MMW data modulated signal and n being an integer value.

13. The system of claim 12, further comprising:

a second switch that receives the second MMW data modulated signal;

a second antenna feed line having a first end that is coupled to the second switch, wherein the second switch switches the second MMW data modulated signal to the first end of the second antenna feed line; and

a second antenna probe coupled to a second end of the second antenna feed line, the second antenna probe coupling the second MMW data modulated signal received from the second end of the second antenna feedline to the second antenna coupling point,

wherein the second antenna feed line includes a length comprising mλ

₂/2 from the first end of the second antenna feed line to the second end the second antenna feed line, λ

₂ being an effective carrier frequency wavelength corresponding to the second MMW data modulated signal and m being an integer value.