Multi-Feed Antenna Radiator for Compact MIMO Arrays
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Solution Overview
Problem
Modern electronic devices face challenges in accommodating additional antennas for new broadband technologies due to limited physical space and the need for extensive changes to existing PCB layouts, especially when integrating multiple radio access technologies like 5G, 4G, Wi-Fi, Bluetooth, and GPS.
Innovation Solution
The development of an antenna device that functions as two separate antennas simultaneously, utilizing a single radiator with strategically positioned feed terminals and a ground terminal, allowing for compact design and integration without occupying excessive space on the PCB or requiring significant layout changes, enabling efficient support for multiple frequency bands.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If additional antennas are added to support new broadband technologies, then wireless communication capability is improved, but available physical space in the electronic device is reduced
Solution Approach 1:
The patent combines two separate antennas into a single integrated antenna structure that supports multiple frequency bands. The antenna device includes a radiator element with multiple feed points that can simultaneously or independently support different frequency bands, thereby reducing the total number of discrete antenna components and freeing up physical space in the electronic device.
Solution Approach 2:
The integrated antenna is designed to perform multiple functions by supporting multiple frequency bands (e.g., both 3.5 GHz and 5 GHz bands) within a single device. The radiator structure with multiple feed terminals enables the antenna to operate across different frequency ranges, making it a universal solution that replaces what would traditionally require multiple separate antennas.
2Adaptability or versatility
If additional antennas are added to support new broadband technologies, then wireless communication capability is improved, but PCB layout complexity increases
Solution Approach 1:
The patent merges multiple antenna functions into a single integrated antenna device that can be implemented as a single PCB trace structure or mounted component. This consolidation reduces the number of separate antenna elements, feed points, and associated grounding structures that would otherwise need to be laid out on the PCB, thereby simplifying the overall PCB design and reducing layout complexity.
3Adaptability or versatility
If separate radiators are used for different frequency bands, then frequency band coverage is improved, but antenna device size increases
Solution Approach 1:
The patent merges multiple frequency band support into a single radiator structure with multiple feed points. Instead of using separate radiators for different frequency bands, the integrated radiator can be excited at different points to resonate at different frequencies, thereby achieving multi-band coverage within a compact form factor.
Solution Approach 2:
The patent transitions from a single-feed-point antenna design to a multi-feed-point antenna design. By adding the dimension of multiple feed terminals along the radiator, the antenna can support multiple frequency bands without increasing its physical footprint, effectively using the linear dimension of the radiator to accommodate multiple operational frequencies.
Data Source
AI summary
Radio Frequency (RF) signal antenna devices and MIMO antenna portion arrays including the RF signal antenna devices are described. An antenna device includes a radiator that functions both as a first antenna and as a second antenna, a ground terminal directly connected to the radiator between a first end and a second end of the radiator, a first feed terminal for the first antenna, directly connected to the radiator at a first feed point between the first end of the radiator and the ground terminal; and a second feed terminal for the second antenna, directly connected to the radiator at a second feed point between the second end of the radiator and the ground terminal.