Planar Antenna Unit for Wireless Audio on Stage Floors

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Solution Overview

Problem

Conventional antennas for wireless audio transmission require favorable spacing relative to surfaces, making them unsuitable for use on flat surfaces like stage floors, where a compact and stable antenna with efficient radiation properties is needed.

Innovation Solution

A compact antenna unit with a metallic main surface and side surfaces arranged at a predetermined angle, featuring a non-metallic side surface and a connection for a feed line, designed to be placed on a planar surface, with a mechanically stable structure that can withstand loads and maintain radiation efficiency.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If conventional directed or omnidirectional antenna arrangements are used, then wireless audio transmission can be achieved, but the antenna requires favorable spacing relative to surfaces which increases profile height and prevents use on flat surfaces

Engineering Contradiction:
Improveusability on flat surfacesVSAvoidprofile height
Core Design Contradiction:
Ease of operationVSLength of stationary object

Solution Approach 1:

The patent transitions from conventional three-dimensional antenna structures requiring vertical spacing to a two-dimensional planar antenna design that operates effectively on flat surfaces. The radiating means is configured as a substantially planar structure with specific geometric arrangements of conductive elements that create the necessary electromagnetic radiation patterns without requiring height above the mounting surface.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

Solution Approach 2:

The patent modifies the operational parameters of the antenna by changing the configuration and dimensions of the radiating means to achieve effective wireless audio transmission at minimal height. The planar geometry and specific element arrangements are designed to optimize radiation efficiency and impedance matching while maintaining an extremely low profile suitable for floor mounting.

Inventive Principle:
Principle #35Parameter changes

2Ease of operation

If the antenna unit is designed with a low profile height for use on stage floors, then it can be placed on flat surfaces, but mechanical stability under load may be compromised

Engineering Contradiction:
Improveplacement on stage floorVSAvoidmechanical stability
Core Design Contradiction:
Ease of operationVSStrength

Solution Approach 1:

The antenna unit employs a composite construction combining a rigid housing structure with integrated radiating elements. The housing is designed to be mechanically robust enough to support walking and driving loads while incorporating the planar radiating means for wireless transmission. This composite approach allows the antenna to function both as a structural floor element and as an effective radiating device.

Inventive Principle:
Principle #40Composite materials

Solution Approach 2:

The antenna unit is designed to serve multiple functions simultaneously: it provides structural support for floor traffic, maintains mechanical stability under various loads, and delivers effective wireless audio transmission. The integrated design combines the housing structure with the radiating means so that a single component fulfills both mechanical and electromagnetic requirements.

Inventive Principle:
Principle #6Universality (Multi-functionality)

3Reliability

If the radiating means is configured for efficient radiation, then wireless transmission reliability is improved, but the antenna structure becomes more complex

Engineering Contradiction:
Improvewireless transmission reliabilityVSAvoidantenna structure complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The radiating means is divided into multiple discrete conductive elements arranged in specific geometric patterns within the planar structure. This segmentation allows each element to be optimized for particular radiation characteristics while collectively achieving the desired overall radiation pattern and impedance properties for reliable wireless audio transmission.

Inventive Principle:
Principle #1Segmentation

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

The antenna unit provides reliable wireless audio transmission with a low profile height, efficient radiation, and mechanical stability, allowing it to be used on stage floors and other flat surfaces without compromising performance.

Implementation Method 1

The first, second and third side surfaces and/or the opening extend between the first and second main surfaces. The second main surface can also be referred to as the radiating means.

Methodology Applied
Scientific EffectElectromagnetic radiation reflection: Reflection

Implementation Method 2

the antenna unit has a front-to-back ratio for reducing electromagnetic radiation by way of the first main surface of the antenna unit

Methodology Applied
Scientific EffectElectromagnetic radiation reduction: Absorption (EM radiation)

Data Source

PatentUS8907856B2Antenna unit for wireless audio transmission
Publication Date: 2014.12.09 SENNHEISER ELECTRONICS GMBH & CO KG
  • US8907856B2 patent drawing
  • US8907856B2 patent drawing
  • US8907856B2 patent drawing

AI summary

There is provided an antenna unit comprising a first metallic main surface (100, 500) for placement of the antenna unit on a substantially planar surface, a second main surface (200, 600), a first end and a second end. The first end has a first and a second metallic side surface (610, 620) and a connection (710) for a feed line of the antenna unit. The second end has a third side surface (630). The second main surface is smaller than the first main surface. The first, second and third side surfaces extend between the first and second main surfaces.