Antenna system for a radar transceiver

• US 7,671,806 B2
• Filed: 11/28/2005
• Issued: 03/02/2010
• Est. Priority Date: 12/30/2004
• Status: Expired due to Fees

• Current Assignee: Robert Bosch GmbH
• Original Assignee: Robert Bosch GmbH
• Inventors: Voigtlaender, Klaus
• Primary Examiner(s): DINH, TRINH VO
• Application Number:
  US11/794,648
• Publication Number:
  US 20080316106A1
• Time in Patent Office: 1,555 Days
• Field of Search: None
• US Class Current: 343/700.0MS
• CPC Class Codes: H01L 2223/6677 for antenna, e.g. antenna included within housing of semiconductor device antennas per se H01Q
• CPC Class Codes: H01L 2224/0554 External layer
• CPC Class Codes: H01L 2224/0555 Shape
• CPC Class Codes: H01L 2224/0556 Disposition
• CPC Class Codes: H01L 2224/05568 the whole external layer protruding from the surface
• CPC Class Codes: H01L 2224/05573 Single external layer
• CPC Class Codes: H01L 2224/05599 Material
• CPC Class Codes: H01L 2224/16145 the bodies being stacked
• CPC Class Codes: H01L 2924/00014 the subject-matter covered by the group, the symbol of which is combined with the symbol of this group, being disclosed without further technical details
• CPC Class Codes: H01Q 1/2283 mounted in or on the surface of a semiconductor substrate as a chip-type antenna or integrated with other components into an IC package
• CPC Class Codes: H01Q 1/3233 particular used as part of a sensor or in a security system, e.g. for automotive radar, navigation systems
• CPC Class Codes: H01Q 1/405 Radome integrated radiating elements
• CPC Class Codes: H01Q 1/42 Housings not intimately mechanically associated with radiating elements, e.g. radome
• CPC Class Codes: H01Q 19/24 the primary active element being centre-fed and substantially straight, e.g. H-antenna
• CPC Class Codes: H01Q 9/0414 in a stacked or folded configuration
• CPC Class Codes: H01Q 9/065 Microstrip dipole antennas patch antenna H01Q9/0407

Abstract

In an antenna system for a radar transceiver, in particular for measuring distance and/or velocity in the surroundings of motor vehicles, having at least one antenna, which includes at least one first part situated on a chip and a second part situated at a distance from the first part and beam-coupled to the first part, the second part of the antenna is situated on an antenna substrate or another chip, which is attached over the first part by flip chip bonds.

Claims

1. An antenna system for a radar transceiver, comprising:

a first base;

a second base; and

at least one antenna, which includes at least one first part situated on the first base and a second part situated at a distance from the first part and coupled to the first part, the second part of the antenna being situated on the second base, which is attached over the first part by flip chip bonds that are substantially truncated sphere-shaped soldered bonds.

2. The antenna system as recited in claim 1, wherein the antenna system is for measuring at least one of a distance and a velocity in surroundings of a motor vehicle.

3. The antenna system as recited in claim 1, wherein at least one of the first base and the second base is made using at least one of the following materials:

silicon, silicon-germanium, silicon-germanium;

C chip, CMOS component.

4. The antenna system as recited in claim 1, further comprising a substrate on which the first base is situated.

5. The antenna system as recited in claim 4, wherein the substrate is composed of at least one of ceramic and low-temperature cofired ceramic.

6. The antenna system as recited in claim 1, wherein the second base is able to be contacted via the soldered bonds.

7. The antenna system as recited in claim 1, wherein at least a part of the soldered bonds forms a shielding mass which is electrically conductively connected to the first base.

8. The antenna system as recited in claim 1, wherein a spacing of the soldered bonds among one another is less than 1/10 of a wavelength of radiation emitted by the antenna.