Single Antenna Multi-Signal Transceiver Using Signal Separation

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Solution Overview

Problem

Current communication systems face challenges in simultaneously transmitting and receiving multiple radio signals within the same frequency band over a single antenna, as conventional systems cannot effectively filter out transmitted signals from received signals, leading to signal saturation and interference.

Innovation Solution

The proposed solution involves a transmitter signal combining apparatus, a transmit/receive signal duplexer, and a signal separation apparatus that isolate and separate transmission and reception signals, allowing multiple transmitters and receivers to operate simultaneously by using a transmitter suppressor to cancel out leakage signals and tunable notch filters to reject specific frequencies.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If multiple transmitters and receivers operate on the same antenna within the same frequency band, then system integration and component reduction are improved, but signal interference and saturation occur

Engineering Contradiction:

Improvenumber of antennasVSAvoidsignal interference

Core Design Contradiction:

Device complexityVSObject-affected harmful factors

Solution Approach 1:

The patent segments the signal paths by introducing separate transmit and receive signal processing chains, with the transmit signal passing through a combiner and the receive signal going through a separate receiver path, allowing simultaneous operation without mutual interference

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent introduces an intermediary signal processing system between the transmitters and receivers, including a combiner that combines transmit signals and a separate receiver path that isolates receive signals, preventing direct interference between transmit and receive operations

Inventive Principle:

Principle #24Intermediary (Mediator)

2Reliability

If conventional filters are used to separate transmit and receive frequencies, then frequency separation is achieved, but the system cannot handle same-frequency simultaneous transmission and reception

Engineering Contradiction:

Improvefrequency separationVSAvoidfrequency band flexibility

Core Design Contradiction:

ReliabilityVSAdaptability or versatility

Solution Approach 1:

The patent employs dynamic signal routing and processing, where the system can adaptively manage signal flows in real-time, allowing transmitters and receivers to operate on the same frequency band simultaneously by dynamically separating signal paths rather than relying on fixed frequency separation

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The patent changes the fundamental parameter of signal separation from frequency-based to path-based separation, allowing signals to be distinguished not by their frequency but by their dedicated transmission paths, enabling same-frequency operation without interference

Inventive Principle:

Principle #35Parameter changes

3Device complexity

If transmit signals are not isolated from receive signals, then system simplicity is maintained, but received signals are saturated and masked

Engineering Contradiction:

Improvesignal isolation structureVSAvoidsignal reception quality

Core Design Contradiction:

Device complexityVSReliability

Solution Approach 1:

The patent segments the signal processing into distinct transmit and receive paths, with the transmit signal passing through a combiner and the receive signal going through a separate receiver path, physically isolating the two signal types to prevent saturation and masking

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Inventive Principle:

Principle #24Intermediary (Mediator)

Data Source

PatentUS7894779B2Apparatus and method for transmitting and receiving multiple radio signals over a single antenna

Publication Date: 2011.02.22 HONEYWELL INTERNATIONAL INC

AI summary

An apparatus for transmitting and receiving multiple radio frequencies simultaneously over a single antenna is provided. The apparatus comprises a transmitter signal combining apparatus configured to communicatively couple with a plurality of transmitters, wherein the transmitter signal combining apparatus is configured to output a transmission signal based on any signals received from the plurality of transmitters. The apparatus also includes at least one transmit/receive signal duplexer coupled to the transmitter signal combining apparatus and configured to provide the transmission signal to an antenna, wherein the antenna receives an incoming radio frequency (RF) signal. Additionally, the apparatus includes a signal separation apparatus coupled to the at least one transmit/receive signal duplexer and configured to receive the incoming RF signal and provide the incoming RF signal to at least one receiver. Wherein the at least one transmit/receive signal duplexer is further configured to provide the incoming RF signal to the signal separation apparatus, and limit a direct coupling of the transmission signal into the signal separation apparatus.