Directional Antenna Module With Passive Frequency Multiplexing

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Solution Overview

Problem

Conventional directional antenna modules require manual switching between different frequency ranges, leading to potential operating errors and unreliable signal reception, especially for weak signals, as users must manually switch between directional antennae at specific boundary frequencies without clear guidance.

Innovation Solution

A directional antenna module with two directional antennae connected to a passive frequency multiplexing unit, which combines antenna signals from adjacent frequency ranges into a wideband signal, eliminating the need for manual switching and providing continuous frequency coverage without electronic switching logic.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If manual switching between directional antennae is implemented for different frequency ranges, then frequency coverage is improved, but operating reliability deteriorates due to potential user errors and missed switching at boundary frequencies

Engineering Contradiction:

Improvefrequency coverageVSAvoidsignal reception reliability

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The system performs automatic switching between directional antennae based on frequency detection, eliminating the need for manual user intervention. The frequency-selective switch automatically detects the operating frequency and routes signals to the appropriate antenna, ensuring reliable signal reception without user error.

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The manual mechanical switching operation is replaced with an electronic automatic switching system. The frequency-selective switch uses electronic frequency detection and automatic routing logic to replace the manual mechanical switching process, improving reliability while maintaining frequency adaptability.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Adaptability or versatility

If multiple directional antennae for different frequency ranges are provided, then frequency range coverage is improved, but device complexity increases due to switching mechanisms

Engineering Contradiction:

Improvefrequency range coverageVSAvoidswitching mechanism complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

Complex mechanical switching mechanisms are replaced with a compact electronic frequency-selective switch. This electronic switching system uses frequency detection and automatic routing to achieve the same multi-frequency coverage with reduced mechanical complexity and improved reliability.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The frequency-selective switch performs multiple functions: frequency detection, automatic antenna selection, and signal routing. This single multi-functional component replaces what would otherwise require separate mechanical switching mechanisms for each frequency range transition.

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Adaptability or versatility

If exchangeable directional antenna modules are used for different frequency ranges, then frequency adaptability is improved, but ease of operation deteriorates due to laborious module changing

Engineering Contradiction:

Improvefrequency adaptabilityVSAvoidmodule changing operation

Core Design Contradiction:

Adaptability or versatilityVSEase of operation

Solution Approach 1:

The system automatically adapts to different frequency ranges through electronic frequency detection and automatic antenna selection, eliminating the need for manual module exchange. The frequency-selective switch self-adjusts based on the operating frequency, making the system as adaptable as exchangeable modules but as easy to operate as a fixed antenna.

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

Multiple directional antennae for different frequency ranges are pre-installed in the housing, and the frequency-selective switch is pre-configured to automatically select the appropriate antenna based on frequency detection. This preliminary preparation eliminates the need for manual module changing during operation.

Inventive Principle:

Principle #10Preliminary action

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 reliable and continuous signal reception across a wide frequency range (10 MHz to 10 GHz) without manual intervention, ensuring robust performance against environmental influences and maintaining sufficient signal gain, even for weak signals, with a cardioid-like directional characteristic.

Implementation Method 1

a passive frequency multiplexing unit, which multiplexes the antenna signals received from the directional antennae in the various frequency ranges into a wideband signal

Methodology Applied

Scientific EffectFrequency division multiplexing:

Data Source

PatentUS9768493B2Directional antenna module

Publication Date: 2017.09.19 ROHDE & SCHWARZ GMBH & CO KG

AI summary

Directional antenna module (1) comprising at least two directional antennae (2-1, 2-2), contained in a housing (12) of the directional antenna module (1), for adjacent frequency ranges, wherein the directional antennae (2-1, 2-2) are connected to a passive frequency multiplexing unit (5), which multiplexes the antenna signals received from the directional antennae in the various frequency ranges into a wideband signal.