# US 10,374,309 B2 · Switched beam antenna system and hand held electronic device

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- Number: US 10,374,309 B2
- Document ID: US10374309B2
- Status: Granted
- Kind: B2
- Application number: 15/606,007
- Filed: 2017-05-26
- Published: 2017-09-28
- Granted: 2019-08-06
- Earliest claimed: 2014-05-30
- Assignees: King Fahd University of Petroleum and Minerals
- Applicants: King Fahd University of Petroleum and Minerals
- Inventors: Mohammad Said Sharawi
- Web page: https://patentgrep.com/patent/US10374309B2

## CPC

- H01Q 3/40: with phasing matrix
- H01Q 9/0407: {Substantially flat resonant element parallel to ground plane, e.g. patch antenna (dipole H01Q9/285; monopole H01Q9/40)}
- H01Q 21/0006: {Particular feeding systems}
- H01Q 21/065: {Patch antenna array}
- H01Q: ANTENNAS, i.e. RADIO AERIALS (radiators or antennas for microwave heating H05B6/72)

## Abstract

A mm-wave antenna apparatus with beam steering function that includes: a Butler Matrix feeding network; a plurality of power combiners, each power combiner having one input and N outputs, configured to apply equal phase and power to a phase distributed output signal generated by the Butler Matrix feeding network and to generate N processed signals; and a plurality of millimeter wave switched beam planar antenna arrays having at least 1.5 GHz of bandwidth and located on a top low loss dielectric substrate, each antenna array of N elements, configured to obtain direct and narrow width beams from the N processed signals combined by each power combiner.

## Claims

### Claim 1

A mm-wave antenna apparatus with beam steering function comprising:
a Butler Matrix feeding network having a plurality of outputs and includes a plurality of input signals and a plurality of output signals in a power of 2 matrix combination;
a plurality of power combiners, each power combiner having N outputs and one input configured to receive a respective output from the Butler Matrix feeding network, wherein each power combiner is configured to apply equal phase and power to a phase distributed output signal generated by the Butler Matrix feeding network and generate N processed signals; and
a plurality of millimeter wave switched beam planar antenna arrays having at least 1.5 GHz of bandwidth and located on a top low loss dielectric substrate, wherein each antenna array has N elements configured to receive the N processed signals from the N outputs of each respective power combiner, and wherein each antenna array is configured to obtain direct and narrow width beams from the N processed signals combined by each of the power combiners,
wherein the apparatus is integrated in a multi-layer printed circuit board including:
a bottom dielectric substrate having the Butler Matrix feeding network, the plurality of power combiners, and a plurality of feeding microstrip lines, and
a middle layer dielectric substrate between the top low loss dielectric substrate and the bottom dielectric substrate and having a ground plane with a plurality of coupling slits,
wherein the top substrate extends beyond the size of the arrays to accommodate the Butler Matrix feeding network.

### Claim 2 (depends on 1)

The apparatus of claim 1, wherein the Butler Matrix feeding network includes one or more hybrid couplers, one or more crossovers and one or more phase shifters.

### Claim 3 (depends on 1)

The apparatus of claim 1, wherein the Butler Matrix feeding network includes M input signals, wherein each of the M input signals is excited at a different time and generates a different phase distributed output signal.

### Claim 4 (depends on 1)

The apparatus of claim 1, wherein the apparatus can be inserted in a handheld portable consumer electronic device for short range communication.

### Claim 5 (depends on 1)

The apparatus of claim 1, wherein the amount of millimeter wave switched beam planar antenna arrays is based on the number of outputs of Butler Matrix feeding network.

### Claim 6 (depends on 1)

The apparatus of claim 1, wherein the number of N elements of each antenna array is based on the total number of outputs of the power combiners.

### Claim 7 (depends on 1)

A handheld portable consumer electronic device comprising the apparatus of claim 1.