Wireless Chip Microstrip Antenna Wave-Absorbing Body Isolation
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Solution Overview
Problem
Conventional built-in antennas in wireless devices interfere with chip circuits and occupy excessive space, leading to inefficiencies and design constraints in modern mobile devices.
Innovation Solution
A wireless chip design featuring a microstrip antenna positioned above a circuit layer with a wave-absorbing body between them, utilizing a metal film, medium, and radiation body to absorb energy and shield against interference, thereby isolating the circuit from the antenna and maintaining a compact device size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If a loop antenna encircles the chip, then radiation efficiency is improved, but interference to chip circuits increases
Solution Approach 1:
A wave-absorbing body is introduced as an intermediary between the loop antenna and the chip. This wave-absorbing body absorbs electromagnetic energy and prevents it from interfering with the chip circuits, while allowing the antenna to maintain its radiation efficiency. The intermediary layer effectively decouples the antenna from the chip electrically while maintaining physical integration.
2Ease of manufacture
If the antenna is positioned in the same plane as the chip, then manufacturing simplicity is improved, but chip area increases considerably
Solution Approach 1:
The antenna is moved from the same plane as the chip to a position above the chip, utilizing the vertical dimension (Z-axis). This three-dimensional arrangement allows the antenna and chip to coexist without occupying excessive planar area, while the wave-absorbing body fills the vertical space to manage electromagnetic interactions. This dimensional transition resolves the area constraint while maintaining manufacturing feasibility.
3Loss of energy
If N turns of loop antenna are used to enhance efficiency, then radiation resistance increases, but disturbance to adjacent chip circuits increases
Solution Approach 1:
The wave-absorbing body serves as a mediator that allows the use of multi-turn loop antennas for enhanced radiation efficiency while preventing the associated increased disturbance to chip circuits. The absorber material captures and dissipates the electromagnetic energy that would otherwise interfere with the chip, enabling the antenna to operate at optimal efficiency without compromising circuit integrity.
4Ease of operation
If a built-in antenna is integrated into the chip, then device mobility is improved, but antenna-circuit interference occurs
Solution Approach 1:
The wave-absorbing body is integrated between the built-in antenna and the chip circuits, acting as an intermediary that enables compact mobile device design while preventing antenna-circuit interference. This allows the antenna to be fully integrated into the device for improved mobility and portability, while the absorber material ensures that the close proximity does not result in harmful electromagnetic coupling or interference with the chip operations.
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
Effectively reduces antenna interference with chip circuits and maintains a small form factor in wireless devices by using a wave-absorbing body and metal film shield, enhancing both performance and design feasibility.
Implementation Method 1
a wave-absorbing body is provided between the circuit layer and the microstrip antenna... utilizing a wave-absorbing body and metal film shield, enhancing both performance and design feasibility
Implementation Method 2
the metal film in the microstrip antenna functions as a shield against any interference
Data Source
AI summary
The present invention discloses a wireless chip comprising a circuit layer above which a microstrip antenna is provided, and a wave-absorbing body is provided between the circuit layer and the microstrip antenna. Since the microstrip antenna is disposed above the circuit layer, the wave-absorbing body capable of absorbing energy is utilized to isolate the circuit from the antenna, and the metal film in the microstrip antenna functions not only as the RF ground of the antenna but also as a shield against any interference, it is possible to effectively address the problem of the antenna interfering with the circuit; by selecting the medium with suitable dielectric constant, the height of the chip can be prevented from being unduly increased, thereby ensuring that the chip and the wireless device using the same are both small in size. The present invention also discloses the wireless device containing the wireless chip.