# US 2017/0288308 A1 · Composite Right/Left-Handed Transmission Line Antenna

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- Number: US 2017/0288308 A1
- Document ID: US20170288308A1
- Status: Published application
- Kind: A1
- Application number: 15/508,348
- Filed: 2014-09-03
- Published: 2017-10-05
- Earliest claimed: 2014-09-03
- Assignees: Huawei Technologies Co., Ltd.
- Applicants: Huawei Technologies Co., Ltd.
- Inventors: Lei Wang; Meng Hou; Xuefei Zhang; Jianming Li; Hanyang Wang
- Web page: https://patentgrep.com/patent/US20170288308A1

## CPC

- H01Q 5/335: at the feed, e.g. for impedance matching
- H01Q 1/243: {with built-in antennas}
- H01Q 9/42: with folded element, the folded parts being spaced apart a small fraction of the operating wavelength
- H01Q 13/08: Radiating ends of two-conductor microwave transmission lines, e.g. of coaxial lines, of microstrip lines
- H01Q 13/10: Resonant slot antennas
- H01Q: ANTENNAS, i.e. RADIO AERIALS (radiators or antennas for microwave heating H05B6/72)

## Abstract

A composite right/left-handed transmission line antenna includes a first radiator, a second radiator, and a capacitive matching circuit, where the first radiator is connected to the second radiator, the connected first radiator and second radiator are of a ring shape, and the matching circuit is connected to a feed-in point of the first radiator or the second radiator.

## Claims

### Claim at position 1

-7. (canceled)

### Claim 8

A composite right/left-handed transmission line antenna comprising:
a first radiator;
a second radiator coupled to the first radiator, wherein the first radiator and second radiator together form a ring shape;
a feed-in point; and
a matching circuit connected to the feed-in point.

### Claim 9 (depends on 8)

The composite right/left-handed transmission line antenna of claim 8 wherein a first end of the first radiator is connected to a second end of the second radiator,

### Claim 10 (depends on 9)

The composite right/left-handed transmission line antenna of claim 9, wherein a third end of the first radiator and a fourth end of the second radiator are configured to be used as ground ends.

### Claim 11 (depends on 8)

The composite right/left-handed transmission line antenna of claim 8, further comprising a high-frequency splitter.

### Claim 12 (depends on 8)

The composite right/left-handed transmission line antenna of claim 8, wherein the first radiator and the second radiator are of a same length.

### Claim 13 (depends on 8)

The composite right/left-handed transmission line antenna of claim 8, wherein the matching circuit comprises:
a series combination of a first inductor and a first capacitor; and
a parallel combination of a second inductor and a second capacitor.

### Claim 14 (depends on 8)

The composite right/left-handed transmission line antenna of claim 8, wherein the matching circuit comprises a series combination of an inductor and a capacitor,

### Claim 15 (depends on 8)

The composite right/left-handed transmission line antenna of claim 8, wherein the matching circuit comprises a parallel combination of an inductor and a capacitor.

### Claim 16 (depends on 8)

The composite right/left-handed transmission line antenna of claim 8, wherein the first radiator is a part of a housing of a mobile terminal,

### Claim 17 (depends on 8)

The composite right/left-handed transmission line antenna of claim 8, wherein the second radiator is a part of a housing of a mobile terminal.

### Claim 18 (depends on 8)

The composite right/left-handed transmission line antenna of claim 8, wherein the matching circuit is capacitive.