Antenna Module Layout for Wider 60 GHz Bandwidth
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Solution Overview
Problem
Current antenna modules face challenges in expanding frequency band width, particularly in the 60 GHz band, to meet the increasing communication demands of 5G technology, where higher frequency millimeter wave bands are used for advanced beamforming and spatial multiplexing.
Innovation Solution
The antenna module incorporates two radiating elements with different element sizes and impedance frequency characteristics, where a common radio-frequency signal is supplied, allowing their operable band widths to partially overlap, thereby expanding the overall frequency band width.
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 and second radiating elements) with different element widths. Each element is designed to operate at different frequency bands, allowing the overall antenna module to cover a wider frequency range while maintaining manageable structural complexity through modular segmentation.
Solution Approach 2:
Different regions of the antenna module are assigned different local characteristics - the first radiating element has a specific width optimized for lower frequencies while the second radiating element has a different width optimized for higher frequencies. This local differentiation of element widths enables each region to contribute to different parts of the frequency spectrum.
2Adaptability or versatility
If multiple radiating elements with different element widths 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 integrated antenna module. The first and second radiating elements are positioned adjacent to each other and fed by a common feed conductor, combining their individual frequency responses to achieve a wider overall frequency band while presenting a unified interface to the communication device.
Solution Approach 2:
The antenna module is designed to perform multiple functions across different frequency bands simultaneously. By incorporating radiating elements with different element widths that operate at different frequencies, the single antenna module can handle both lower and higher frequency communications, making it a universal solution for multi-band 5G communication requirements.
3Adaptability or versatility
If radiating elements with significantly different element widths are used, then the frequency band width is maximized, but the impedance matching becomes more difficult
Solution Approach 1:
The impedance characteristics of each radiating element are carefully controlled by adjusting parameters such as element width, element length, and spacing between elements. The first radiating element is designed with impedance characteristics suitable for lower frequencies, while the second radiating element is designed with impedance characteristics suitable for higher frequencies, achieving optimal impedance matching across the entire frequency band through parameter optimization.
Data Source
AI summary
An antenna module includes radiating elements that radiate radio waves in a first polarization direction, and a feed conductor that supplies a common radio-frequency signal to the radiating elements. A first radiating element and a second radiating element are disposed adjacent to each other. The feed conductor includes a common conductor, and conductors branching off from the common conductor. The conductors are respectively coupled to the radiating elements. Frequency characteristics of an impedance of the radiating element are different from frequency characteristics of an impedance of the radiating element. Under another condition of 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.