Antenna Tuning Apparatus Reducing Adjustable Impedance Devices
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Solution Overview
Problem
Existing multiple-antenna-port and multiple-radio-port antenna tuning apparatuses require a large number of expensive electrically adjustable impedance devices for automatic tuning, which is a significant limitation.
Innovation Solution
A method and apparatus for radio communication using a switching unit and an antenna tuning apparatus with a reduced number of adjustable impedance devices, allowing for efficient selection and tuning of antennas to match impedance matrices, thereby compensating for user interaction and frequency variations without the need for a large number of expensive devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If existing multiple-antenna-port and multiple-radio-port antenna tuning apparatuses are used, then automatic tuning capability is achieved, but the number of expensive electrically adjustable impedance devices increases significantly
Solution Approach 1:
The patent segments the antenna system into multiple antenna ports (N ports) and radio ports (M ports), allowing independent tuning of each port combination. By dividing the tuning function across multiple ports rather than using a single comprehensive tuner, the system achieves automatic tuning capability while reducing the total number of adjustable impedance devices required compared to traditional single-port approaches.
Solution Approach 2:
The antenna tuning apparatus is designed with universal applicability across multiple antenna ports and radio ports. Each adjustable impedance device can serve multiple tuning functions for different port combinations, allowing a reduced set of devices to provide comprehensive automatic tuning coverage for the entire MIMO antenna system.
2Manufacturing precision
If a large number of adjustable impedance devices are used, then tuning precision for multiple antennas is improved, but system cost increases significantly
Solution Approach 1:
The patent applies local quality by providing dedicated adjustable impedance devices for specific antenna-port to radio-port mappings where needed, rather than uniformly distributing tuning components across all possible combinations. This allows precise impedance matching at critical interfaces while using fewer overall devices, reducing system cost while maintaining tuning precision.
Solution Approach 2:
The system dynamically changes impedance parameters through controlled adjustment of the reduced set of adjustable impedance devices. By strategically positioning and controlling these devices, the system achieves precise impedance matching across multiple antenna and radio ports without requiring a proportional increase in the number of tuning components, thereby controlling system cost.
3Productivity
If multiple antennas are selected and tuned, then radio communication efficiency is improved, but the complexity of impedance matching increases
Solution Approach 1:
The patent implements dynamic impedance matching where the antenna tuning apparatus continuously adapts impedance parameters based on real-time operating conditions and selected antenna configurations. This dynamic adjustment capability allows the system to maintain efficient radio communication across multiple antennas while automatically managing the complexity of impedance matching through adaptive control rather than static pre-configured solutions.
Data Source
AI summary
The invention relates to a method for radio communication using a plurality of antennas, and to an apparatus for radio communication using a plurality of antennas. An apparatus for radio communication of the invention comprises: 4 antennas; a radio device; an antenna tuning apparatus having 2 antenna ports and 2 radio ports; a switching unit comprising 4 input ports each coupled to one of the antennas through a feeder, and 2 output ports, the switching unit operating in an active configuration in which it provides a path between any one of the output ports and one of the input ports, the active configuration being determined by a configuration instruction generated by the radio device; and a tuning control unit, the tuning control unit receiving a tuning instruction generated by the radio device, the tuning control unit delivering a plurality of tuning control signals to the antenna tuning apparatus.