Hollow Line Coupling for Fill Level Radar

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Existing level measurement systems using the transit time method face challenges with signal transmission efficiency and sensitivity due to complex connections and signal paths, leading to inaccurate distance measurements and increased insertion loss.

Innovation Solution

A waveguide coupling for level radar systems where a high-frequency chip is integrated with a coupling element directly within the waveguide, eliminating the need for bond connections and allowing direct signal coupling, reducing insertion loss and improving sensitivity by minimizing signal paths.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If complex bond connections and signal paths are used to connect the high-frequency chip to the antenna element, then the device can be constructed with separate components, but insertion loss increases and signal transmission efficiency decreases

Engineering Contradiction:

Improveconstructability with separate componentsVSAvoidinsertion loss

Core Design Contradiction:

Ease of manufactureVSLoss of energy

Solution Approach 1:

The coupling element is integrated directly into the high-frequency chip, merging the signal generation and coupling functions into a single component. This eliminates the need for separate bond connections and intermediate signal paths, thereby minimizing insertion loss and improving signal transmission efficiency while maintaining constructability.

Inventive Principle:

Principle #5Merging (Combining)

2Ease of manufacture

If complex bond connections and signal paths are used, then component assembly is simplified, but measurement accuracy decreases due to increased insertion loss and ringing effects

Engineering Contradiction:

Improveassembly simplicityVSAvoiddistance measurement accuracy

Core Design Contradiction:

Ease of manufactureVSMeasurement precision

Solution Approach 1:

By integrating the coupling element into the high-frequency chip, the invention eliminates intermediate bond connections that cause ringing effects and signal degradation. This direct integration maintains assembly simplicity while significantly improving distance measurement accuracy by reducing insertion loss and unwanted signal reflections.

Inventive Principle:

Principle #5Merging (Combining)

3Loss of energy

If the coupling element is arranged on the top side of the chip, then signal radiation is unimpeded, but the coupling element is mechanically less protected

Engineering Contradiction:

Improvesignal attenuationVSAvoidmechanical protection

Core Design Contradiction:

Loss of energyVSStrength

Solution Approach 1:

The coupling element is integrated into the high-frequency chip structure, allowing it to be positioned on the top side for optimal signal radiation without external protection needs. The chip substrate itself provides mechanical support and protection, eliminating the trade-off between signal quality and mechanical protection.

Inventive Principle:

Principle #5Merging (Combining)

4Ease of manufacture

If bond connections are used to transfer the high-frequency signal, then the chip can be separately mounted, but the signal path length increases causing higher insertion loss

Engineering Contradiction:

Improvechip mounting flexibilityVSAvoidinsertion loss

Core Design Contradiction:

Ease of manufactureVSLoss of energy

Solution Approach 1:

The coupling element is fabricated as an integral part of the high-frequency chip, eliminating the need for separate bond connections. This integration maintains chip mounting flexibility while reducing the signal path length to the minimum possible, thereby minimizing insertion loss and improving overall system performance.

Inventive Principle:

Principle #5Merging (Combining)

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

This configuration enhances signal transmission characteristics, reduces 'ringing' effects, and simplifies construction, resulting in improved measurement accuracy and stability, particularly in high-temperature applications.

Implementation Method 1

a high-frequency chip that is at least partially arranged in the waveguide and serves to generate a high-frequency transmission signal. The coupling element can be, for example, a coupling pin in the form of a metallic pin (through a metallization structure, e.g., a conductor section)

Methodology Applied

Scientific EffectElectromagnetic radiation: Electromagnetic Induction

Implementation Method 2

a waveguide and a high-frequency chip that is at least partially arranged in the waveguide. The coupling element can be, for example, a coupling pin in the form of a metallic pin (through a metallization structure, e.g., a conductor section)

Methodology Applied

Scientific EffectWaveguide propagation: Waveguide

Implementation Method 3

The time between the transmission of the signals and the reception of the reflected signals (travel time) allows the distance between the measuring device and the surface of the medium to be determined

Methodology Applied

Scientific EffectTime-of-flight measurement: Time of Flight

Data Source

PatentEP3450931B1Hollow line coupling for a fill level radar

Publication Date: 2022.10.05 VEGA GRIESHABER GMBH & CO

Figure 1~2
Figure 3~4

AI summary

Waveguide coupling for a level radar with a waveguide and a high-frequency chip that protrudes at least partially into the waveguide and has a coupling element for coupling the transmit signal into the waveguide.