FM Antenna for NFC and RFID Signal Reception
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Solution Overview
Problem
Conventional portable electronic devices require separate antennas, hardware, and software for various mobility applications and services, making integration costly and inefficient.
Innovation Solution
A method and system utilizing a frequency modulation (FM) antenna for both near field communication (NFC) and radio frequency identification (RFID), which includes a tuning control block and processor to configure an antenna for reception and transmission of signals across different frequency bands, including FM, NFC, and RFID frequencies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate antennas and hardware are used for different mobility applications, then each application can be optimized independently, but device complexity and cost increase
Solution Approach 1:
The patent applies multi-functionality by enabling a single FM antenna to serve multiple purposes: receiving FM radio signals, conducting NFC communications, and performing RFID operations. The antenna system integrates shared components including a low-pass filter, amplifier, and tuning control block that can be configured for different frequency bands and communication modes, thereby reducing overall device complexity while maintaining optimized performance for each application.
2Reliability
If multiple antennas are used for different frequency bands, then signal reception for each band is optimized, but manufacturing cost increases
Solution Approach 1:
The patent merges previously separate antenna systems into a unified FM antenna structure that handles multiple frequency bands. Specifically, the design combines the FM receiving antenna with NFC and RFID antenna functions, sharing common components such as the low-pass filter, amplifier, and tuning control block. This consolidation reduces the number of separate components that need to be manufactured and assembled, lowering production costs while maintaining optimized signal reception across all supported bands.
3Device complexity
If a single antenna is used for multiple functions, then device complexity is reduced, but signal reception efficiency may deteriorate
Solution Approach 1:
The patent implements dynamics through a programmable tuning control block that can dynamically adjust the resonant frequency and impedance characteristics of the antenna system. The controller receives signals from the processor and modifies the antenna's operating parameters in real-time based on the required communication mode (FM receiving, NFC, or RFID). This dynamic reconfiguration enables the single antenna to maintain optimal signal reception efficiency across different frequency bands and application types without requiring multiple dedicated antennas.
4Adaptability or versatility
If frequency tuning components are added to enable multi-band operation, then adaptability improves, but device complexity increases
Solution Approach 1:
The patent applies parameter changes by using a programmable tuning control block that modifies electrical parameters (resonant frequency, impedance, capacitance) of the antenna system to enable operation across multiple frequency bands. The controller changes these parameters dynamically based on the required communication mode, allowing the same physical antenna structure to adapt to different frequency requirements. This approach achieves multi-band adaptability while keeping the tuning control system relatively simple compared to having separate fixed-frequency antenna systems.
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
Enables cost-effective integration of disparate mobility applications and services into a single device by using a single FM antenna for NFC and RFID, improving signal reception and transmission efficiency across multiple communication standards.
Implementation Method 1
an antenna (332) configured to receive signals in an FM frequency band, or to receive signals in an NFC and RFID frequency band
Data Source
AI summary
A method for wireless communication is provided and may include configuring at least one capacitor array in an antenna system to control a frequency for receiving external signals. An antenna and at least one inductor in the antenna system may be configured for receiving external signals at a first frequency. An inductor and a voltage source, a capacitor, and/or a ground reference may be configured for receiving the external signals at a different frequency if the frequency is utilized for backscattered signal reception and/or magnetically coupled signal reception. Near field communication (NFC) signals may be received at the different frequency for backscattered signals. Radio frequency identification (RFID) signals may be received at the different frequency for magnetically coupled signals. The first frequency may be within the FM frequency band. The antenna system may be configured to transmit signals to be subsequently received as backscattered signals or magnetically coupled signals.