Radar array antenna

Patent metadata

Field	Value
Publication number	US-9685714-B2
Application number	US-201314377826-A
Country	US
Kind code	B2
Filing date	Feb 8, 2013
Priority date	Feb 9, 2012
Publication date	Jun 20, 2017
Grant date	Jun 20, 2017

Abstract

Disclosed is a radar array antenna. The radar array antenna includes: at least one main power feed line electrically coupled to a feed point; a plurality of branch lines branched from the main feed line; and a plurality of patch radiators, each having a square shape, and respectively coupled to the plurality of branch lines. Each of the plurality of branch lines is coupled to one edge of each of the patch radiators. According to the disclosed radar array antenna, the power feed line of the radar array antenna may be minimized in size by using the patch radiator to reduce power losses and realize miniaturization.

First claim

What is claimed is:

1. A radar array antenna comprising:
at least one main feed line electromagnetically joined with a feed point;
a plurality of branch lines branching from the main feed line; and
a plurality of patch radiators joined respectively with the plurality of branch lines, the boundaries of patch radiators having a quadrilateral shape,
wherein each of the plurality of branch lines is joined respectively to a first corner portion of the patch radiator,
wherein the patch radiator has a plurality of slots formed therein,
wherein at least one of the slots is formed between the first corner portion and a second corner portion of the patch radiator, and the second corner portion is located in the diagonal direction from the first corner portion, and
wherein the path of a current is formed between the slots.

2. The radar array antenna of claim 1 , wherein the plurality of slots have a rectangular form and are oriented at an angle of +45 degrees or −45 degrees with respect to the main feed line along a lengthwise direction.

3. A radar array antenna comprising:
at least one main feed line electromagnetically joined with a feed point;
a plurality of branch lines branching from the main feed line; and
a plurality of patch radiators joined respectively with the plurality of branch lines, the boundaries of patch radiators having a quadrilateral shape,
wherein the patch radiator has a plurality of slots formed therein, the plurality of slots oriented at an angle of +45 degrees or −45 degrees with respect to the main feed line along a lengthwise direction, and
wherein at least one of the slots is formed between a first corner portion and a second corner portion of the patch radiator, and the second corner portion is located in the diagonal direction from the first corner portion, and
wherein the path of a current is formed between the slots.

4. The radar array antenna of claim 3 , wherein each of the plurality of branch lines is joined respectively to the first corner portion of the patch radiator.

5. The radar array antenna of claim 3 , wherein the slots have a rectangular form.

Assignees

• Ace tech corp

Inventors

• Milyakh Yaroslav
• Kim Hak-Kyoun
• Sun Da Young

Classifications

• H01Q21/293 Primary

  one unit or more being an array of identical aerial elements (adaptive arrays H01Q3/2605) · CPC title

• H01Q21/0075

  Stripline fed arrays (H01Q21/065 takes precedence) · CPC title

• H01Q21/08 Primary

  the units being spaced along or adjacent to a rectilinear path {(waveguide fed H01Q21/0037)} · CPC title

• H01Q1/3233 Primary

  particular used as part of a sensor or in a security system, e.g. for automotive radar, navigation systems · CPC title

• H01Q21/065

  Patch antenna array · CPC title