# US 9,519,048 B2 · High-frequency circuit having crossed lines

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 9,519,048 B2
- Document ID: US9519048B2
- Status: Granted
- Kind: B2
- Application number: 14/509,628
- Filed: 2014-10-08
- Published: 2015-04-09
- Granted: 2016-12-13
- Earliest claimed: 2013-10-08
- Assignees: Robert Bosch GmbH
- Applicants: Robert Bosch GmbH
- Inventors: Matthias Steinhauer; Juan Pontes; Oliver Brueggemann
- Web page: https://patentgrep.com/patent/US9519048B2

## CPC

- G01S 7/02: of systems according to group G01S13/00
- G01S 7/032: {Constructional details for solid-state radar subsystems}
- G01S 13/02: Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
- G01S 13/931: of land vehicles
- H01P 3/081: {Microstriplines}
- H01Q 1/3233: {particular used as part of a sensor or in a security system, e.g. for automotive radar, navigation systems}
- H01Q 21/08: the units being spaced along or adjacent to a rectilinear path {(waveguide fed H01Q21/0037)}
- G01S: RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- H01P: WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE (operating at optical frequencies G02B)
- H01Q: ANTENNAS, i.e. RADIO AERIALS (radiators or antennas for microwave heating H05B6/72)

## Abstract

A high-frequency circuit is described as having lines crossing each other on a printed circuit board for high-frequency signals, wherein the sections of the lines, lying on both sides of a crossing point as well as a coupler forming the crossing point are situated in a common plane on the printed circuit board and the sections of the lines are connected to four ports of the coupler situated in a quadrangle, which are connected to one another via a plurality of coupling paths in such a way that the components of a signal supplied at a port, which propagate on various coupling paths, interfere destructively at the adjacent ports and constructively at the diagonally opposite port.

## Claims

### Claim 1

A high-frequency circuit, comprising:
a printed circuit board; and
lines crossing each other on the printed circuit board for high-frequency signals, wherein:
sections of the lines lying on both sides of a crossing point, as well as a coupler forming the crossing point are situated in a common plane on the printed circuit board,
the sections of the lines are connected to four ports of the coupler situated in a quadrangle, and
the four ports are connected to one another via a plurality of coupling paths in such a way that components of a signal supplied at a port (a), which propagate on various coupling paths, interfere destructively at adjacent ports (b, d) and constructively at a diagonally opposite port (c).

### Claim 2 (depends on 1)

The high-frequency circuit as recited in claim 1, wherein the coupler has two parallel lines, wherein opposite ends of the two parallel lines form the four ports, the two parallel lines being connected to one another by an uneven number of parallel coupling paths.

### Claim 3 (depends on 2)

The high-frequency circuit as recited in claim 2, wherein the coupler has exactly three coupling paths.

### Claim 4 (depends on 1)

The high-frequency circuit as recited in claim 1, wherein the lines are developed as microstrip lines.

### Claim 5

A radar sensor, comprising:
a printed circuit board;
a plurality of antenna patches situated on the printed circuit board, wherein the antenna patches form a plurality of groups interleaved with one another;
a feeder circuit for supplying high-frequency signals which differ from one another from group to group, to the antenna patches, wherein the feeder circuit is a high-frequency circuit including:
the printed circuit board; and
lines crossing each other on the printed circuit board for high-frequency signals, wherein:
sections of the lines lying on both sides of a crossing point, as well as a coupler forming the crossing point are situated in a common plane on the printed circuit board,
the sections of the lines are connected to four ports of the coupler situated in a quadrangle, and
the four ports are connected to one another via a plurality of coupling paths in such a way that components of a signal supplied at a port (a), which propagate on various coupling paths, interfere destructively at adjacent ports (b, d) and constructively at a diagonally opposite port (c).

### Claim 6 (depends on 5)

The radar sensor as recited in claim 5, wherein the radar sensor is for a motor vehicle.