Repeater Antenna Resonant Structure for Signal Amplitude
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Electromagnetic waves emitted from an antenna are weakened due to phase-shifting and amplitude reduction caused by reflection from metal conductors, which existing technologies have not effectively addressed, particularly in repeater systems where signal strength is crucial.
Innovation Solution
A resonant structure comprising a resonator with specific conductor configurations and materials is used to minimize the impact of reflected waves, employing artificial magnetic conductors and carefully designed conductor layouts to maintain signal amplitude by controlling phase differences and resonance frequencies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a metal conductor is placed near the antenna, then the antenna structure is simplified, but the electromagnetic wave amplitude is reduced due to phase-shifting and reflection
Solution Approach 1:
The patent changes the electrical parameters of the conductor by introducing a resonant structure with specific inductance and capacitance values. The resonator is designed to resonate at the operating frequency, transforming the conductor from a simple reflective surface into an artificial magnetic conductor that produces constructive interference and enhances signal amplitude.
Solution Approach 2:
The patent creates a composite structure combining a conventional conductor with a resonant circuit (inductor and capacitor). This composite artificial magnetic conductor integrates the simplicity of metal conductors with the phase-control capabilities of resonant structures, achieving both structural simplicity and signal enhancement.
2Reliability
If the distance between antenna and metal conductor is set to 1/4 wavelength, then the reflected wave effect is reduced, but the overall system size increases
Solution Approach 1:
The patent changes the electrical length of the conductor path within the resonator to achieve the desired phase effect without requiring a physical distance of 1/4 wavelength. By adjusting the inductance and capacitance values, the resonator creates the equivalent electrical effect in a compact physical space.
Solution Approach 2:
The patent transitions from controlling wave reflection in the spatial domain (distance-based) to controlling it in the electrical domain (frequency and impedance-based). The resonant structure manipulates phase and amplitude through electrical parameters rather than physical dimensions, achieving compactness.
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 proposed resonant structure effectively reduces the weakening effect of reflected waves on emitted electromagnetic waves, enhancing signal strength and maintaining amplitude, thereby improving the performance of repeater systems.
Implementation Method 1
A resonant structure comprising a resonator with specific conductor configurations and materials is used to minimize the impact of reflected waves, employing artificial magnetic conductors and carefully designed conductor layouts to maintain signal amplitude by controlling phase differences and resonance frequencies.
Implementation Method 2
Electromagnetic waves emitted from an antenna are reflected by a metal conductor. The electromagnetic wave reflected by the metal conductor is phase-shifted by 180°.
Implementation Method 3
The electromagnetic wave reflected by the metal conductor is phase-shifted by 180°.
Data Source
Figure 1
Figure 2
Figure 3A~3B
AI summary
A repeater includes a first surface-side antenna, a second surface-side antenna, and a transceiver. Each of the first surface-side antenna and the second surface-side antenna includes a first conductor and a second conductor opposed to each other in a first axis, one or more third conductors positioned between the first conductor and the second conductor and extending in the first axis, a fourth conductor connected to the first conductor and the second conductor and extending in the first axis, and a feeding line electromagnetically connected to any one of the third conductors. The first conductor and the second conductor are capacitively connected through the third conductor. The feeding line of the first surface-side antenna is connected to the feeding line of the second surface-side antenna through the transceiver.