Multi-Antenna Terminal Impedance Matching and Phase Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The challenge is to enhance the receive sensitivity and frequency bandwidth of wireless communication terminals with multiple antennas, particularly in small form factor designs where the number of signals received decreases due to size constraints and multi-functionality, leading to reduced communication quality.
Innovation Solution
The solution involves incorporating an impedance matching unit, a phase shifter, and an amplitude regulator in the signal processing path of the terminal to adjust the beam pattern and shape of frequency signals received through multiple antennas, ensuring optimal impedance matching and signal processing without reflected waves, thereby improving communication quality and frequency bandwidth.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the terminal size is reduced and multiple functions are integrated, then the terminal becomes more compact and versatile, but the receive sensitivity of the antenna is lowered
Solution Approach 1:
The terminal divides the antenna system into multiple independent antenna elements (first antenna, second antenna, third antenna, fourth antenna) arranged in specific spatial configurations. This segmentation allows each antenna to handle specific frequency bands or signal types, maintaining receive sensitivity despite the compact overall terminal size.
Solution Approach 2:
The patent utilizes three-dimensional spatial arrangement of multiple antennas with different orientations (e.g., antennas extended in different directions, specific angular relationships). By exploiting the spatial dimension rather than just increasing antenna size in one dimension, the system maintains signal reception quality while keeping the terminal compact.
2Adaptability or versatility
If multiple antennas with different frequencies are provided for international roaming and multi-functionality, then the terminal supports more communication services, but the receive sensitivity is lowered due to increased signal complexity
Solution Approach 1:
The terminal employs multiple antennas that can operate across different frequency bands (e.g., first frequency band and second frequency band) to support various communication standards and international roaming requirements. Each antenna is designed with universal functionality to handle multiple frequency ranges, allowing the terminal to maintain high receive sensitivity while supporting diverse communication services.
Solution Approach 2:
Different antenna elements are optimized for specific frequency ranges or signal characteristics (e.g., first antenna for first frequency band, second antenna for second frequency band). This local optimization ensures that each antenna operates at peak efficiency for its designated frequency range, maintaining overall system sensitivity despite the multi-functional requirements.
3Device complexity
If a shield case antenna is used to ensure space for multiple antennas, then the terminal structure is simplified, but the receive sensitivity is lowered as terminal size is diminished
Solution Approach 1:
The patent integrates multiple antenna elements within a compact shield case structure, nesting the antennas in a space-efficient arrangement. The antennas are positioned and oriented to minimize mutual interference while maximizing signal reception, allowing the shield case to maintain structural simplicity without sacrificing receive sensitivity.
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 approach enables improved receive sensitivity and increased frequency bandwidth, enhancing the efficiency of transmitting and receiving frequencies, and supports MIMO operations by adjusting the beam pattern and shape, thus improving overall communication quality.
Implementation Method 1
an antenna matching unit, which matches the impedance between the antenna unit and the signal processing unit
Implementation Method 2
a phase shifter, which controls the phase of the signal received through the antenna unit
Implementation Method 3
an amplitude regulator, which adjusts the amplitude of the signal
Data Source
AI summary
A wireless communication terminal according to the embodiment includes a communication module including a circuit board having a plurality of pins; a shield case antenna overlapping with one side of the circuit board, electrically connected to a part of the pins and including a signal receiving unit; and a signal processing unit for processing the received signals. An antenna matching unit for matching impedance between the signal processing unit and an antenna unit, a phase shifter for controlling a phase of the received signal and an amplitude regulator for adjusting amplitude of the received signal are provided between the signal processing unit and the antenna unit.