Integrated Filter-Antenna Assembly for Impedance Matching

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Solution Overview

Problem

Existing communication systems face challenges with large dimensions and high insertion loss due to the need for an impedance matching circuit between filter and antenna chips.

Innovation Solution

An antenna assembly is proposed, integrating a filter module and an antenna module, where the output impedance of the filter module is matched with the input impedance of the antenna module, eliminating the need for a separate impedance matching circuit.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a matching circuit is added between filter and antenna to avoid impedance mismatch, then impedance matching is improved, but the dimension and insertion loss of the whole system increase

Engineering Contradiction:

Improveimpedance matchingVSAvoidsystem dimension

Core Design Contradiction:

ReliabilityVSLength of stationary object

Solution Approach 1:

The patent merges the filter module and antenna module into a single integrated antenna assembly. The filter chip and antenna chip are positioned adjacent to each other on the same substrate, eliminating the need for a separate matching circuit between them. This integration maintains impedance matching while reducing overall system dimension.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The patent introduces a matching circuit that is integrated within the antenna assembly rather than as a separate component. This matching circuit serves as an intermediary between the filter and antenna, but its integration into the assembly reduces the overall dimension increase compared to a separate matching circuit.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Reliability

If a matching circuit is added between filter and antenna to avoid impedance mismatch, then impedance matching is improved, but insertion loss of the system increases

Engineering Contradiction:

Improveimpedance matchingVSAvoidinsertion loss

Core Design Contradiction:

ReliabilityVSLoss of energy

Solution Approach 1:

By merging the filter and antenna into an integrated assembly with the matching circuit incorporated within, the patent reduces the number of external connections and interfaces. This integration minimizes additional insertion loss that would occur with separate components and multiple connection points.

Inventive Principle:

Principle #5Merging (Combining)

3Adaptability or versatility

If filter chip and antenna chip are designed independently, then design flexibility is maintained, but impedance mismatch occurs when cascaded

Engineering Contradiction:

Improvedesign flexibilityVSAvoidimpedance matching

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The patent combines independently designed filter and antenna chips into an integrated assembly where they are positioned adjacent to each other on the same substrate. This merging maintains the independence of individual chip designs while ensuring proper impedance matching through controlled spacing and integrated matching circuits.

Inventive Principle:

Principle #5Merging (Combining)

Data Source

PatentUS12334632B2Antenna assembly and communication system

Publication Date: 2025.06.17 ANHUI ANUKI TECH CO LTD

AI summary

Provided are an antenna assembly and a communication system, relating to the technical field of antennas. The antenna assembly comprises a filter module and an antenna module, wherein the antenna module is connected to the filter module, and the antenna module is integrated with the filter module, wherein an output impedance of the filter module is matched with an input impedance of the antenna module.