Magnetic Oscillation Antenna Phase Control
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Solution Overview
Problem
Existing antenna devices that transmit electromagnetic waves to arbitrary directions require high-frequency phase shifters, which are large, expensive, and reduce system efficiency due to high-frequency power attenuation during transmission.
Innovation Solution
The antenna device employs magnetic oscillation element units with PIN layers and free layers that change resistance based on magnetization direction, allowing phase control without high-frequency phase shifters, and integrates antennas with magnetic oscillation elements to minimize power transmission losses.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If high-frequency phase shifters are used to control the phase of electromagnetic waves from each antenna, then the directivity control precision is improved, but the device size and cost increase
Solution Approach 1:
The patent replaces high-frequency phase shifters (electromagnetic system) with magnetic oscillation elements controlled by low-frequency signals (magnetic system). The magnetic oscillation elements convert low-frequency electrical signals into high-frequency electromagnetic waves directly, eliminating the need for high-frequency phase shifting components while maintaining directivity control capability.
Solution Approach 2:
The patent changes the operating frequency parameter of the control system from high-frequency to low-frequency. By using low-frequency signals to control the magnetic oscillation elements, the system avoids the complexity associated with high-frequency phase shifters while achieving the same phase control function through magnetic field manipulation.
2Device complexity
If high-frequency power is transmitted from converter to antenna through transmission means, then the system architecture is improved, but power attenuation increases significantly
Solution Approach 1:
The patent extracts the high-frequency power transmission step from the system architecture. Instead of converting electrical energy to high-frequency power and then transmitting it, the magnetic oscillation elements directly generate high-frequency electromagnetic waves from low-frequency electrical signals at the antenna location, eliminating the transmission path and associated losses.
Solution Approach 2:
The patent merges the converter and antenna functions into a single integrated unit. The magnetic oscillation elements are directly connected to the antenna, combining the energy conversion and radiation functions in one location, thereby eliminating the need for separate high-frequency power transmission components.
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 enables compact, cost-effective antenna devices that efficiently transmit electromagnetic waves to arbitrary directions with reduced power attenuation, improving overall system efficiency and eliminating the need for bulky high-frequency phase shifters.
Implementation Method 1
magnetic oscillation element, which converts electrical energy to high-frequency power
Implementation Method 2
a resistance value of an element, which is configured by the PIN layer, the intermediate layer and the free layer, changes depending on an angle between the magnetization direction of the PIN layer and the magnetization direction of the free layer
Data Source
AI summary
An antenna device includes: antennas; magnetic oscillation element units converting electrical energy to high-frequency power; and a modulator outputting electrical energy input from outside to at least two magnetic oscillation element units, with a time difference to differentiate phases of high-frequency power converted from electrical energy by at least two magnetic oscillation element units. The magnetic oscillation element units respectively include a pair of electrodes, and further include, between the pair of electrodes, a PIN layer, a free layer, and an intermediate layer. A resistance value of an element configured by the PIN, free and intermediate layers changes according to the angle between the magnetization direction of the PIN layer and the magnetization direction of the free layer. The antennas transmit electromagnetic waves to open space outside the magnetic oscillation element units with the supply of high-frequency power.