The circuit design is carried out by taking chip of RF-ID U2270B as core, including power module, frequency module, antennamodule and data input;
采用以射频卡U2270B器件为核心完成支撑电路设计，包括电源模块、频率模块、天线模块和数据输入；
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The RADIONOVA M10478 RF AntennaModule is an ultra-compact single package that combines the RF and antenna on the same module for both L1-band GPS and Assisted-GPS systems.
The frequency response may also be controlled by a low voltage micro sized varicap, or a varactor diode, and instantiated as a tuned, resonant matching filter network residing with the antennamodule.