Multi-band Antenna Coupling via Conductor Pattern
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Solution Overview
Problem
In size-reduced electronic devices, signal interference occurs between closely mounted antennas, compromising radiation efficiency and bandwidth support for multi-band wireless communication.
Innovation Solution
The antenna device incorporates a first and second antenna with a conductor pattern electrically connected to their ground terminals, facilitating coupling to enhance radiation efficiency and bandwidth, particularly through a substrate that transmits RF signals for impedance matching across multiple frequency bands.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If multiple antennas are mounted closely in a size-reduced electronic device, then the device size is reduced, but signal interference occurs between antennas
Solution Approach 1:
A conductor pattern is introduced as an intermediary element between the first and second antennas. This conductor pattern couples with the first radiator and is electrically connected to the second ground terminal, serving as a mediator that enables impedance matching and reduces signal interference between the closely mounted antennas while allowing them to be positioned in a compact space
2Volume of moving object
If multiple antennas are mounted closely in a size-reduced electronic device, then the device size is reduced, but radiation efficiency deteriorates
Solution Approach 1:
The conductor pattern is designed with specific geometric parameters (length, width, position) that are optimized to achieve impedance matching between the first and second antennas. By adjusting these parameters, the coupling effect is controlled to improve radiation efficiency and reduce energy loss while maintaining compact antenna spacing
3Volume of moving object
If multiple antennas are mounted closely in a size-reduced electronic device, then the device size is reduced, but bandwidth support for multi-band wireless communication is compromised
Solution Approach 1:
The conductor pattern acts as a coupling intermediary that enables the first and second antennas to operate across multiple frequency bands. By establishing controlled coupling between the first radiator and the conductor pattern (connected to the second antenna's ground terminal), the system achieves improved impedance matching that supports wideband and multi-band wireless communication operations
Solution Approach 2:
The conductor pattern serves multiple functions simultaneously: it provides impedance matching, enables coupling between antennas, and supports multi-band operation. This multi-functional element allows the compact antenna system to maintain versatility for various wireless communication standards and frequency bands
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 improves radiation efficiency, achieving higher gain and wider bandwidth in specific frequency bands, thereby supporting reliable multi-band wireless communication while minimizing signal interference.
Implementation Method 1
a conductor pattern electrically connected to the second ground terminal, wherein the conductor pattern is formed at a position capable of causing coupling with the first radiator
Data Source
AI summary
The present disclosure relates generally to a multi-band antenna device and an electronic device having the same. An antenna device according to embodiments may include a first antenna and a second antenna. The first antenna may include a first ground terminal, a first feed terminal, and a first radiator. The second antenna may include a second ground terminal, a second feed terminal, a second radiator, and a conductor pattern electrically connected to the second ground terminal. The conductor pattern may be formed at a position capable of causing coupling with the first radiator. Other embodiments are possible.