Wireless Terminal Antenna Frequency Switching Circuit Synchronization
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Solution Overview
Problem
Conventional wireless terminals face challenges in synchronizing the selection control for multiple RF circuits and operating frequency control of reconfigurable antennas, which is essential for supporting multiple wireless communication systems while maintaining a compact size.
Innovation Solution
A wireless terminal design that incorporates an antenna with a frequency switching circuit, RF circuits, an antenna switch, and a generation unit to produce synchronized control signals for switching between wireless communication systems or transmission/reception, ensuring synchronization between RF circuit selection and antenna frequency control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a reconfigurable antenna is used to cover a broad band, then the antenna can support multiple wireless communication systems, but the antenna size cannot be reduced
Solution Approach 1:
The patent employs a reconfigurable antenna with dynamic frequency switching capability. The antenna includes frequency switching circuits that can dynamically adjust its operating frequency to match different wireless communication systems (GSM, WCDMA, LTE), enabling a single compact antenna structure to cover multiple frequency bands without requiring a large physical size.
Solution Approach 2:
The patent changes the electrical parameters of the antenna by introducing frequency switching circuits that modify the antenna's resonant frequency. By adjusting the electrical length and impedance characteristics through switching between different circuit configurations, the antenna achieves broad band coverage across multiple communication standards while maintaining a compact physical dimensions suitable for mobile terminals.
2Adaptability or versatility
If multiple RF circuits are added to support multiple wireless communication systems, then the system versatility improves, but the device complexity increases
Solution Approach 1:
The patent implements a universal antenna design that can serve multiple wireless communication systems (GSM, WCDMA, LTE) through frequency switching. Instead of requiring separate dedicated RF circuits and antennas for each communication standard, a single multi-functional antenna system with reconfigurable frequency capability handles all systems, significantly reducing overall device complexity while maintaining full versatility.
Solution Approach 2:
The patent merges the functionality of multiple separate RF circuits and antennas into a single integrated reconfigurable antenna system. By combining frequency switching circuits with the antenna structure and using a unified control mechanism managed by the baseband processing unit, the system reduces the total number of components and simplifies the overall architecture while supporting multiple wireless communication standards.
3Manufacturing precision
If frequency switching circuits are added to the antenna, then the operating frequency control improves, but the antenna structure complexity increases
Solution Approach 1:
The patent incorporates frequency switching circuits that are pre-configured with switching elements (such as PIN diodes or MEMS switches) and control logic designed to enable rapid frequency transitions. The baseband processing unit pre-determines the required frequency based on the detected wireless communication system, and the antenna structure is preliminarily designed with multiple resonant paths that can be selectively activated, achieving precise frequency control without requiring complex real-time adjustments.
Data Source
AI summary
A wireless terminal includes an antenna which comprises an antenna element and at least one frequency switching circuit to control an operating frequency of the antenna element in accordance with a frequency control signal, a plurality of RF circuits to perform an RF signal processing, an antenna switch to connect the antenna to one of the plurality of RF circuits in accordance with a connection control signal, and a generation unit configured to generate the frequency control signal and the connection control signal in accordance with switching between a plurality of wireless communication systems or switching between transmission and reception.