# US 12,183,997 B2 · MxN millimeter wave and terahertz planar dipole end-fire array antenna

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- Number: US 12,183,997 B2
- Document ID: US12183997B2
- Status: Granted
- Kind: B2
- Application number: 18/065,341
- Filed: 2022-12-13
- Published: 2023-06-15
- Granted: 2024-12-31
- Earliest claimed: 2021-12-14
- Assignees: Zhejiang Normal University
- Applicants: Zhejiang Normal University
- Inventors: Yanfei Mao; Chungeng Zhu; Junwu Kan; Shuyun Wang; Shiju E; Zhonghua Zhang; Zhen Chai; Annan Zhou; Yaxin Deng; Ruonan Na
- Web page: https://patentgrep.com/patent/US12183997B2

## CPC

- H01Q 9/065: {Microstrip dipole antennas (patch antenna H01Q9/0407)}
- H01Q 21/0075: {Stripline fed arrays (H01Q21/065 takes precedence)}
- H01Q 21/062: {using dipole aerials; (H01Q21/067, H01Q21/068 take precedence)}
- H01Q: ANTENNAS, i.e. RADIO AERIALS (radiators or antennas for microwave heating H05B6/72)

## Abstract

The present disclosure belongs to the field of radio frequency circuit design, and in particular relates to a M×N millimeter wave and terahertz planar dipole end-fire array antenna. The M×N millimeter wave and terahertz planar dipole end-fire array antenna is composed of M paths of N× end-fire linear array antennas arranged at equal intervals, and the distance d between two adjacent N× end-fire linear array antennas is less than λ, where λ is the wavelength, and both M and N are integers greater than 1. By connecting linear type feed networks of the M paths of N× end-fire linear array antennas to M-path in-phase radio frequency signal transmitter and controlling the distance between two adjacent N× end-fire linear array antennas to be less than the effective wavelength, a higher gain and a higher half-power width can be realized, and the power consumption of the transmitter can be reduced.

## Claims

### Claim 1

A M×N millimeter wave and terahertz planar dipole end-fire array antenna, comprising M paths of N× end-fire linear array antennas arranged at equal intervals, wherein a distance d between two adjacent N× end-fire linear array antennas is less than λ, wherein λ is a wavelength, and both M and N are integers greater than 1; wherein
each of the N× end-fire linear array antennas is formed of a planar structure, comprising linear type feed networks, and N dipole antenna elements comprising each of the N× end-fire linear array antennas; and the linear type feed networks in the M paths of N× end-fire linear array antennas are connected to a M-path in-phase radio frequency signal transmitter;
wherein the feed networks are etched on upper and lower metal of a PCB board with double metal surfaces, antenna elements perpendicular to an upper feed network are etched on a same side of the upper feed network, and antenna elements perpendicular to a lower feed network are etched on a same side of the lower feed network; lower antenna elements face a direction opposite to the antenna elements on the upper feed network, and each group of upper and lower metallic antenna elements facing opposite directions forms a dipole antenna element.

### Claim 2 (depends on 1)

The M×N millimeter wave and terahertz planar dipole end-fire array antenna according to claim 1, wherein the antenna element is a dipole antenna.

### Claim 3 (depends on 1)

The M×N millimeter wave and terahertz planar dipole end-fire array antenna according to claim 1, wherein one end of the linear type feed networks is connected to the M-path in-phase radio frequency signal transmitter via matched micro-strip lines or coplanar waveguides.

### Claim 4 (depends on 1)

The M×N millimeter wave and terahertz planar dipole end-fire array antenna according to claim 1, wherein a number of the antenna elements is 3 to 20, and a distance Δd between two adjacent antenna elements is equal to λ/(2k), wherein k is an integer greater than zero.

### Claim 5 (depends on 4)

The M×N millimeter wave and terahertz planar dipole end-fire array antenna according to claim 4, wherein the antenna elements are etched on a same metal surface and are towards a same side.

### Claim 6 (depends on 4)

The M×N millimeter wave and terahertz planar dipole end-fire array antenna according to claim 4, wherein the number of the antenna elements connected to a same upper feed network or a same lower feed network is 3 to 20, and the distance Δd between the two adjacent antenna elements is equal to λ/(2k), wherein k is an integer greater than zero.

### Claim 7 (depends on 4)

The M×N millimeter wave and terahertz planar dipole end-fire array antenna according to claim 4, wherein a number M of the N× end-fire linear array antennas is 2 to 100.