Dielectric Resonator Antenna Package for 76–81 GHz Radar
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Solution Overview
Problem
Conventional planar antennas on printed circuit boards are inadequate for future radar sensors operating in extended frequency ranges of 76-81 GHz, leading to degraded emission properties, and existing Antenna in Package solutions require complex high-frequency substrates.
Innovation Solution
A combination of Antenna in Package technology with dielectric resonator antennas (DRAs) that enable broadband and efficient emission with high antenna gain, using standard FR4 technology and eliminating the need for complex high-frequency substrates, allowing flexible modularity and adaptation of emission characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional planar antennas are used on printed circuit boards, then manufacturing is simple using standard PCB technology, but emission properties degrade significantly in extended frequency range (76-81 GHz)
Solution Approach 1:
The antenna system is divided into multiple antenna elements (first antenna element and second antenna element) with different polarization directions. Each element is independently designed and mounted on the carrier element, allowing optimized performance across different frequency ranges and polarization requirements while maintaining manageable complexity through modular construction
Solution Approach 2:
The antenna elements are integrated within a compact carrier element structure that incorporates multiple functional components including mounting structures, conductive connections, and signal routing layers. The nested design allows multiple antenna elements to be housed in a single integrated package, achieving high emission properties without proportionally increasing overall device complexity
2Volume of moving object
If Antenna in Package technology is used to achieve compact dimensions, then integration is improved, but broadband emission with high gain becomes difficult to achieve
Solution Approach 1:
The antenna elements are designed with adjustable and adaptable characteristics, allowing optimization of radiation patterns and impedance matching across broadband frequencies. The mounting structures enable flexible positioning and orientation of antenna elements to achieve desired gain characteristics while maintaining compact package dimensions
Solution Approach 2:
The carrier element employs composite construction with conductive coatings on substrate layers, combining different materials with complementary properties. The conductive layers provide signal routing and grounding while the substrate provides mechanical support and electrical isolation, enabling high-performance antenna operation in a compact volume
3Reliability
If special high-frequency substrates are used for Antenna in Package, then emission performance is improved, but manufacturing complexity and cost increase
Solution Approach 1:
The carrier element uses uniform conductive coating layers applied to standard substrate materials, eliminating the need for complex high-frequency specialized substrates. The homogeneous conductive structures provide consistent electrical performance across the frequency range while maintaining compatibility with conventional PCB manufacturing processes
Solution Approach 2:
The antenna structure replicates effective high-frequency antenna designs using standard PCB materials and manufacturing techniques. By copying proven antenna geometries and configurations onto conventional substrates with conductive coatings, the invention achieves high-frequency performance without requiring expensive specialized materials or complex manufacturing processes
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables compact, cost-effective, and efficient radar emission with high gain, while allowing for flexible design modifications and wide field of view coverage, suitable for vehicle radar systems and other high-frequency applications like 5G.
Implementation Method 1
the at least one antenna element comprises a dielectric resonator antenna
Implementation Method 2
designed to transmit a transmitter signal to the at least one antenna element and/or to receive a transmitter signal from the at least one antenna element
Implementation Method 3
The fastening structure may be a socket and/or a solder or adhesive, it being possible for the fastening structure to conductively connect the antenna element to the first and/or second strip conductor
Data Source
AI summary
An antenna device. The antenna device includes a carrier element having at least one first strip conductor and having a second strip conductor; at least one fastening structure, which is formed in or on the carrier element; at least one antenna element, which is arranged or fastened on or in the fastening structure and is connected to the strip conductor; a transmitter device, which is arranged on the carrier element and is connected to the second strip conductor, and is designed to transmit a transmitter signal to the at least one antenna element and/or to receive a transmitter signal from the at least one antenna element.