Conductive Loop Antenna Layout for Spurious Emission Suppression

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Solution Overview

Problem

Existing wireless communication systems face challenges in suppressing spurious emissions without causing signal loss or increasing system size and cost, as additional filters to mitigate these emissions often lead to performance degradation and cost escalation.

Innovation Solution

The use of conductive plates and loops in an antenna design to suppress unwanted signal portions, with conductive loops and sub-loops configured to target specific frequency bands, thereby reducing spurious emissions without the need for additional filters.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Object-generated harmful factors

If additional filters are implemented to suppress spurious emissions, then spurious emissions are reduced, but signal loss increases and system size and cost increase

Engineering Contradiction:
Improvespurious emissionsVSAvoidsignal loss
Core Design Contradiction:
Object-generated harmful factorsVSLoss of energy

Solution Approach 1:

The patent merges the spurious emission suppression function with the existing antenna structure by integrating conductive loops and plates directly into the antenna elements. This combines multiple functions (signal reception and spurious emission suppression) into a single integrated structure, eliminating the need for separate filters while avoiding signal loss and additional system size.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The conductive loops and plates are designed to perform multiple functions: they serve as part of the antenna structure for signal reception while simultaneously acting as spurious emission suppressors. This multi-functionality allows the same components to handle both desired signals and reject unwanted emissions, resolving the contradiction between suppression effectiveness and signal preservation.

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

2Object-generated harmful factors

If additional filters are implemented to suppress spurious emissions, then spurious emissions are reduced, but system size and cost increase

Engineering Contradiction:
Improvespurious emissionsVSAvoidsystem size and cost
Core Design Contradiction:
Object-generated harmful factorsVSDevice complexity

Solution Approach 1:

The patent merges the spurious emission suppression function with the existing antenna structure by integrating conductive loops and plates directly into the antenna elements. This combines multiple functions (signal reception and spurious emission suppression) into a single integrated structure, eliminating the need for separate filters while avoiding signal loss and additional system size.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The conductive loops and plates are designed to perform multiple functions: they serve as part of the antenna structure for signal reception while simultaneously acting as spurious emission suppressors. This multi-functionality allows the same components to handle both desired signals and reject unwanted emissions, resolving the contradiction between suppression effectiveness and signal preservation.

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

3Object-generated harmful factors

If conventional filtering methods are used, then spurious emissions are suppressed, but signal integrity deteriorates due to signal loss

Engineering Contradiction:
Improvespurious emissionsVSAvoidsignal integrity
Core Design Contradiction:
Object-generated harmful factorsVSReliability

Solution Approach 1:

The patent merges the spurious emission suppression function with the existing antenna structure by integrating conductive loops and plates directly into the antenna elements. This combines multiple functions (signal reception and spurious emission suppression) into a single integrated structure, eliminating the need for separate filters while avoiding signal loss.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The conductive loops and plates act as intermediaries that selectively interact with electromagnetic fields. They are positioned and configured to intercept spurious emissions while allowing desired signals to pass through to the antenna elements, thereby mediating between the harmful emissions and the signal reception process without degrading signal integrity.

Inventive Principle:
Principle #24Intermediary (Mediator)

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 design effectively suppresses spurious emissions across various frequency bands, enhancing signal quality while maintaining hardware dimensions and avoiding unnecessary costs, thus ensuring compliance with regulatory standards.

Implementation Method 1

The first conductive loop and the second conductive loop can be used to suppress a first signal portion of a first frequency band

Methodology Applied
Scientific EffectElectromagnetic induction: Electromagnetic Induction

Data Source

PatentUS12567670B2Antenna including conductive plates and conductive loops and capable of reducing spurious emissions
Publication Date: 2026.03.03 MEDIATEK INC
  • US12567670B2 patent drawing
  • US12567670B2 patent drawing
  • US12567670B2 patent drawing

AI summary

An antenna includes a first conductive plate, a first conductive loop, a second conductive plate, a second conductive loop, a first conductive path, and a second conductive path. The first conductive loop can be disposed below the first conductive plate. The second conductive loop can be disposed below the second conductive plate. The first conductive path can include a first terminal electrically connected to the first conductive plate, and a second terminal electrically connected to a ground layer. The second conductive path can include a first terminal electrically connected to the second conductive plate, and a second terminal electrically connected to the ground layer. The first conductive plate and the second conductive plate can be used to access wireless signals, and the first conductive loop and the second conductive loop can be used to suppress a signal portion of a frequency band.