Antenna Module Layout for Wider Millimeter-Wave Bandwidth
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Solution Overview
Problem
Current antenna modules face challenges in expanding frequency band width, particularly in high-frequency millimeter wave bands, which affects communication rate and quality in 5G systems.
Innovation Solution
The antenna module design includes two flat radiating elements with different element sizes and impedance frequency characteristics, allowing their operable band widths to partially overlap, thereby expanding the overall frequency band width by combining their frequency ranges.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single radiating element is used in the antenna module, then the structure is simple, but the frequency band width is limited
Solution Approach 1:
The antenna module is divided into multiple radiating elements (first radiating element and second radiating element) with different element widths. Each element is designed to operate in a specific frequency range, and their combined operable band widths create a wider overall frequency band width, resolving the contradiction between structural simplicity and frequency band versatility.
Solution Approach 2:
Different radiating elements are designed with different local characteristics (different element widths) to optimize performance in different frequency ranges. The first radiating element has a width optimized for lower frequencies while the second has a narrower width for higher frequencies, allowing each element to excel in its designated frequency range while collectively providing wide band coverage.
2Adaptability or versatility
If multiple radiating elements with different frequencies are used, then the frequency band width is expanded, but the device complexity increases
Solution Approach 1:
Multiple radiating elements with different frequency characteristics are merged into a single antenna module structure. The first and second radiating elements are integrated on the same substrate with a common ground electrode, combining their individual frequency ranges into a unified wide-band antenna system that provides expanded frequency band width without requiring separate antenna structures.
Solution Approach 2:
The antenna module is designed as a universal structure that can operate across multiple frequency bands simultaneously. By incorporating radiating elements with different element widths that have partially overlapping operable band widths, the single antenna module achieves multi-functionality, supporting both lower and higher frequency ranges within the 60 GHz band and beyond.
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
This configuration enhances the frequency band width of the antenna module, improving communication rates and quality by effectively utilizing a wider range of frequencies, especially in the 60 GHz band.
Implementation Method 1
an antenna module that radiates radio waves upon receiving a radio-frequency signal output from a feed circuit
Data Source
AI summary
An antenna module radiates radio waves upon receiving a radio-frequency signal output from an RFIC. The antenna module includes flat radiating elements that radiate radio waves in a first polarization direction, feed conductors that each supply a radio-frequency signal from the RFIC to an associated one of the radiating elements, and a ground electrode disposed opposite the radiating elements. As viewed from the RFIC, frequency characteristics of an impedance of the radiating element are different from frequency characteristics of an impedance of the radiating element. Under a condition a frequency band in which a return loss is less than or equal to a predetermined value is defined as an operable band width in each of the radiating elements, the operable band width of the radiating element partially overlaps the operable band width of the radiating element.