Collimator Antenna Multiplexing Without Electrical Combining Loss

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Solution Overview

Problem

Existing wireless transmitters and receivers lack efficient methods for channel frequency multiplexing and demultiplexing, leading to inefficiencies and increased insertion losses due to the use of electrical power multiplexing circuits, especially in high-frequency ranges.

Innovation Solution

A wireless transmitter and receiver system that employs a transmission module with modulators and shaping circuits, combined with a collimator assembly of primary and secondary radiating elements, to achieve channel frequency multiplexing and demultiplexing without electrical power multiplexing, utilizing planar array antennas and multiband elementary cells to direct electromagnetic waves into a common propagation direction.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If electrical power multiplexing circuits are used to establish multiple communication channels, then channel frequency multiplexing is achieved, but insertion losses increase and radiation efficiency decreases

Engineering Contradiction:

Improvechannel frequency multiplexing capabilityVSAvoidinsertion losses

Core Design Contradiction:

ProductivityVSLoss of energy

Solution Approach 1:

The patent extracts and eliminates the electrical power multiplexing circuit from the system. Instead of using electrical circuits to combine multiple frequency channels, the invention allows each channel to be transmitted independently through its own radiating element, removing the source of insertion losses while maintaining the capability for multiple simultaneous communication channels

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The patent replaces the electrical power multiplexing circuit (electrical system) with a spatial arrangement of radiating elements (electromagnetic system). Each radiating element directly radiates its assigned frequency channel without electrical combining, substituting electromagnetic field interactions for electrical circuit operations and thereby eliminating insertion losses

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Reliability

If multiple frequency bands are transmitted simultaneously through separate radiating elements, then channel independence is maintained, but device complexity increases

Engineering Contradiction:

Improvechannel independenceVSAvoidtransmitter structure

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent merges multiple frequency band transmissions into a single collimated beam through spatial arrangement. By positioning multiple radiating elements with their phase centers at a common focus and orienting them to radiate in the same direction, the system combines multiple independent channels into one unified directional output, reducing spatial complexity while maintaining channel independence

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The patent creates a multi-functional radiating system where each radiating element serves multiple purposes: it transmits its assigned frequency channel independently while contributing to the overall collimated beam formation. The common focus structure provides universal phase reference for all elements, enabling simultaneous multi-channel operation with coordinated beam shaping

Inventive Principle:

Principle #6Universality (Multi-functionality)

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 system enhances radiation efficiency by avoiding insertion losses associated with electrical power multiplexing, achieving high gain and wide bandwidth with improved channel independence and data transmission rates.

Implementation Method 1

Each primary radiating element is connected to a corresponding output port PSi and is capable of transforming the electrical signal received on this port into an electromagnetic wave radiated in a direction towards the collimator assembly

Methodology Applied

Scientific EffectElectromagnetic radiation: Electromagnetic Induction

Implementation Method 2

The different multiband elementary cells are arranged relative to one another in such a way that they form, for each frequency band BWi, a focus FOi arranged in space at a different location

Methodology Applied

Scientific EffectPhase shifting:

Implementation Method 3

the collimator assembly (10) of multiband elementary cells arranged relative to one another in such a way that they form, for each frequency band BWi, a focus FOi

Methodology Applied

Scientific EffectCollimation:

Data Source

PatentEP3832899B1Wireless transmitter performing channel frequency multiplexing

Publication Date: 2025.09.03 COMMISSARIAT A LENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES

Figure 1~3
Figure 4~6

AI summary

The transmitter comprises: - a collimator assembly (10) with a transmitting array, this collimator assembly being capable of: • transforming a first electromagnetic wave radiated from a first focus (FO1-FO4) and in a first frequency band, into a plane electromagnetic wave of the same frequency radiated in a first predetermined direction, and • transforming a second electromagnetic wave radiated from a second focus (FO1-FO4) and in a second frequency band, into a plane electromagnetic wave of the same frequency radiated in the same first predetermined direction, - first and second primary radiating elements (ERP1-ERP4) connected only, respectively, to first and second output ports (PS1-PS4) of a transmitting module (4).The first and second primary radiating elements (ERP1-ERP4) are positioned so as to radiate the first and second electromagnetic waves from, respectively, the first and second foci (FO1-FO4).