Liquid Crystal Antenna Phase Shifter for Temperature-Stable Beam Control
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Solution Overview
Problem
The dielectric constant of a phase shifter in an antenna changes significantly with temperature fluctuations, leading to issues such as narrowed phase shift angle and increased insertion loss, affecting antenna performance and stability.
Innovation Solution
The antenna design incorporates a phase adjustment layer with a tunable dielectric layer, temperature control units, and a radiation layer with specific radiation patches to maintain consistent phase shifting and reduce losses, utilizing a liquid crystal phase shifter and temperature control mechanisms to stabilize the antenna's operating temperature.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a conventional phase shifter with fixed dielectric layer is used, then the structure is simple, but the dielectric constant changes greatly with temperature causing narrowed phase shift angle and increased insertion loss
Solution Approach 1:
The patent applies the dynamics principle by making the dielectric layer tunable rather than fixed. The dielectric constant can be dynamically adjusted in response to temperature changes, allowing the phase shifter to maintain optimal performance across varying thermal conditions. This is achieved through temperature-sensitive materials or active control mechanisms that modify the dielectric properties based on real-time temperature feedback.
Solution Approach 2:
The patent implements parameter changes by modifying the dielectric constant of the dielectric layer as a function of temperature. Rather than using a fixed dielectric material, the system changes the dielectric parameter (dielectric constant) to compensate for temperature-induced performance degradation, thereby maintaining stable phase shift characteristics and reducing insertion loss across different operating temperatures.
2Reliability
If temperature control mechanisms are added to stabilize dielectric properties, then phase shifting stability is improved, but device complexity increases
Solution Approach 1:
The patent applies the self-service principle by designing a temperature control system that automatically regulates the dielectric layer temperature without requiring external intervention. The system uses intrinsic temperature sensors and integrated heating/cooling elements that self-adjust to maintain optimal operating conditions, eliminating the need for complex external temperature control apparatus while ensuring stable phase shifting performance.
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
The solution ensures stable phase shifting and reduced losses across varying temperatures, enhancing the antenna's performance and reliability by maintaining consistent dielectric properties and temperature control.
Implementation Method 1
utilizing a liquid crystal phase shifter and temperature control mechanisms to stabilize the antenna's operating temperature
Implementation Method 2
a dielectric constant of a dielectric layer of a phase shifter in an antenna may change greatly with a change of temperature
Implementation Method 3
temperature control units, and a radiation layer with specific radiation patches to maintain consistent phase shifting and reduce losses, utilizing a liquid crystal phase shifter and temperature control mechanisms to stabilize the antenna's operating temperature
Data Source
AI summary
The present disclosure provides an antenna and electronic device, and belongs to the field of communication technology. The antenna includes a feed layer, a phase adjustment layer, and a radiation layer, wherein the feed layer is configured to transmit a microwave signal to the phase adjustment layer; the phase adjustment layer is configured to phase-shift the microwave signal by a preset phase shift amount; and the radiation layer is configured to radiate the microwave signal phase-shifted by the phase adjustment layer; the radiation layer includes at least one first radiation patch.