# US 8,786,383 B2 · Metamaterial diplexers, combiners and dividers

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- Number: US 8,786,383 B2
- Document ID: US8786383B2
- Status: Granted
- Kind: B2
- Application number: 13/084,667
- Filed: 2011-04-12
- Published: 2011-10-13
- Granted: 2014-07-22
- Earliest claimed: 2010-04-12
- Assignees: Hollinworth Fund, L.L.C.
- Applicants: Alexandre Dupuy
- Inventors: Alexandre Dupuy
- Web page: https://patentgrep.com/patent/US8786383B2

## CPC

- H01P 1/15: by semiconductor devices
- H01P: WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE (operating at optical frequencies G02B)

## Abstract

A wireless device having a CRLH structure incorporates a power combiner/divider and diplexer. In one embodiment, circuit parameters are selected to achieve impedance matching using a transmission line structure.

## Claims

### Claim 1

A wireless device, comprising:
a plurality of antenna elements having Composite Right/Left Hand (CRLH) structures;
a power combiner/divider circuit coupled to each of the plurality of antenna elements, the power combiner/divider circuit having a plurality of feed paths, each having a diode; and
a diplexer having a downstream end coupled to the power combiner/divider circuit, the diplexer having an upstream end operable to select between a plurality of paths for processing multiple frequency bands, a frequency band on one of the paths being different from a frequency band of a different path.

### Claim 2 (depends on 1)

The wireless device of claim 1, wherein the power combiner/divider circuit comprising a CRLH structured transmission line.

### Claim 3 (depends on 2)

The wireless device of claim 2, wherein the diplexer comprises a plurality of switches.

### Claim 4 (depends on 3)

The wireless device of claim 3, wherein at least one of the plurality of switches supports transmit and receive signals.

### Claim 5 (depends on 3)

The wireless device of claim 3, wherein a first switch of the plurality of switches is adapted to process signals in a first frequency band, and a second switch of the plurality of switches is adapted to process signals in a second frequency band.

### Claim 6 (depends on 3)

The wireless device of claim 3, wherein the plurality of switches are single pole double throw switches.

### Claim 7 (depends on 1)

The wireless device of claim 1, wherein the power combiner/divider comprises:
a branch point coupled to the diplexer; and
a plurality of feed paths coupled to the branch point, the plurality of feed paths coupled to the plurality of antenna elements.

### Claim 8 (depends on 1)

The wireless device of claim 1, wherein the diplexer comprises multiple diplexer paths, wherein a first diplexer path supports multiple transmit frequency bands and the second diplexer path supports multiple receive frequency bands.

### Claim 9 (depends on 8)

The wireless device of claim 8, further comprising a switching element coupled between the diplexer and the power combiner/divider, wherein the switch is used to select the first diplexer path for transmission of signals or to select the second diplexer path to receive signals.

### Claim 10

A wireless device comprising:
an antenna element,
a power combiner/divider transmission line coupled to the antenna element; and
a plurality of diplexers coupled to the power combiner/divider transmission line;
wherein each of the plurality of diplexers includes:
a downstream end coupled to the power combiner/divider transmission line; and
an upstream end operable to select between a plurality of paths for processing multiple frequency bands, a frequency band on one of the paths being different from a frequency band of a different path.

### Claim 11 (depends on 10)

The wireless device as in claim 10, wherein the power combiner/divider transmission line is a zero degree component.

### Claim 12 (depends on 11)

The wireless device as in claim 11, wherein the power combiner/divider transmission line is a Composite Right Left Hand (CRLH) structure.

### Claim 13 (depends on 12)

The wireless device as in claim 12, wherein the device supports dual band operation.

### Claim 14 (depends on 13)

The wireless device as in claim 13, wherein each of the plurality of diplexers is coupled to the power combiner/divider transmission line at a port point having a first impedance value.

### Claim 15 (depends on 14)

The wireless device as in claim 14, wherein each of the plurality of diplexers has a diplexing point having a second impedance value.

### Claim 16 (depends on 12)

The wireless device as in claim 12, wherein the power combiner/divider comprises a plurality of unit cells, and wherein each unit cell has equivalent circuit parameters corresponding to an associated phase.

### Claim 17 (depends on 16)

The wireless device as in claim 16, wherein a capacitance element is coupled between each of the diplexers and the power combiner/divider transmission line.

### Claim 18 (depends on 17)

The wireless device as in claim 17, wherein a feed capacitance is coupled between the power combiner/divider transmission line and the antenna element.

### Claim 19 (depends on 16)

The wireless device as in claim 16, wherein the associated phase is selected from the values of ±2k×180° (k=0, 1, 2 . . . ).

### Claim 20 (depends on 19)

The wireless device as in claim 19, wherein the equivalent circuit parameters and corresponding associated phases provide impedance matching between the plurality of diplexers and the antenna element.