Antenna Module Feed Layout for Stable Mid-Band Switching

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Solution Overview

Problem

Conventional antenna modules experience unexpected changes in mid-frequency band characteristics when switching to a low-frequency band.

Innovation Solution

The antenna module design includes a substrate with a floating radiating unit and a low-frequency radiating unit spaced apart along one direction, and a feed unit positioned to pass through both units, with unequal lengths and separation distances, along with a control unit for frequency adjustment.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If the antenna module switches to a low-frequency band, then the low-frequency band characteristics are improved, but the mid-frequency band characteristics are disturbed and change unexpectedly

Engineering Contradiction:

Improvefrequency band switching capabilityVSAvoidmid-frequency band characteristic stability

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The antenna module is divided into separate functional units: a low-frequency radiating unit and a mid-frequency radiating unit, each optimized for specific frequency bands. The feed unit is segmented into a first portion coupled to the low-frequency unit and a second portion coupled to the mid-frequency unit, allowing independent operation and preventing interference between bands

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The feed unit acts as an intermediary component that selectively couples signal energy to either the low-frequency radiating unit or the mid-frequency radiating unit based on operating conditions. This intermediary structure prevents direct interference between the two radiating units while enabling frequency band switching

Inventive Principle:

Principle #24Intermediary (Mediator)

2Adaptability or versatility

If the feed unit is positioned to couple with both radiating units, then frequency band switching is enabled, but the characteristics of mid-frequency band are easily disturbed

Engineering Contradiction:

Improvemulti-frequency band operationVSAvoidmid-frequency band characteristic maintenance

Core Design Contradiction:

Adaptability or versatilityVSEase of operation

Solution Approach 1:

Different portions of the feed unit have different coupling characteristics: the first portion is optimized for coupling with the low-frequency radiating unit while the second portion is optimized for the mid-frequency radiating unit. This local differentiation allows selective activation of specific frequency bands without affecting others

Inventive Principle:

Principle #3Local quality

Data Source

PatentUS12597707B2Antenna module and electronic device

Publication Date: 2026.04.07 AUDEN TECHNO CORP

AI summary

An antenna module and an electronic device are provided. The antenna module includes a substrate, a floating radiating unit, a low-frequency radiating unit, and a feed unit. The substrate has a first and a second direction that are not parallel to each other. The floating radiating unit is spaced apart from the low-frequency radiating unit along the first direction, and the floating radiating unit and the low-frequency radiating unit have a common side in the second direction. The feed unit is located on the common side, and is spaced apart from the floating radiating unit and the low-frequency radiating unit along the second direction. A projection path of the feed unit along the second direction passes through the floating radiating unit and the low-frequency radiating unit, and the feed unit is coupled with the floating radiating unit and the low-frequency radiating unit.