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Microchip公司的MRF24J40MC是和2.4 GHz IEEE Std. 802.15.4™兼容的表面安裝的模塊,集成了晶體,電壓穩壓器,匹配電路,功率放大器(PA)和低噪音放大器(LNA)以及50歐姆外接天線連接器.而ZENA™無線適配器是多功能USB無線適配器,可連接裝備了USB的臺式電腦或筆記本電腦,或作為網絡應用的無線節點,也可用作協議分析器或診斷工具.本文介紹了MRF24J40MC無線模塊的主要特性,框圖, PA/LNA方框圖和應用電路與材料清單,PCB布局圖以及三種不同頻率的ZENA™無線適配器的電路圖,材料清單. The ZENA Wireless Adapter is a multi-function USB wireless adapter connecting USB-equipped desktop or notebook computers with Microchip wireless products for development or application uses. As a development tool, the ZENA Wireless Adapter can be used as a protocol analyzer or as a diagnostic tool. It can also be used to connect the computer as a wireless node to the network for application uses. The ZENA Wireless Adapter is capable of performing a variety of functions and each function can be programmed into the adapter using the built in USB boot loader. MRF24J40: 2.4 GHz IEEE Std. 802.15.4™ RF Transceiver Module with PA/LNA and External Antenna Connector The MRF24J40MC is a 2.4 GHz IEEE Std. 802.15.4™ compliant, surface mount module with integrated crystal, internal voltage regulator, matching circuitry, Power Amplifier (PA), Low Noise Amplifier (LNA) with 50Ω external antenna connector. The MRF24J40MC module operates in the non-licensed 2.4 GHz frequency band. The integrated module design frees the integrator from extensive RF and antenna design, and regulatory compliance testing allowing quicker time to market. The MRF24J40MC module is compatible with Microchip’s ZigBee®, and MiWi™ Development Environment software stacks. The MRF24J40MC module has received regulatory approvals for modular devices in the United States (FCC) and Canada (IC). Modular approval removes the need for expensive RF and antenna design, and allows the end user to place the MRF24J40MC module inside a finished product and does not require regulatory testing for an intentional radiator (RF transmitter). The MRF24J40MC module has been tested and conforms to ETS EN 300 328 V1.7.1 (2006-10) European Standards. The module tests can be applied toward final product certification and Declaration of Conformity (DoC). 
圖1. MRF24J40MC模塊方框圖
圖2. MRF24J40MC模塊PA/LNA方框圖
圖3. MRF24J40MC模塊應用電路
圖4. MRF24J40MC模塊電路圖 MRF24J40MC模塊材料清單:
圖5. MRF24J40MC模塊PCB元件布局圖:頂層 ZENA™無線適配器 The ZENA Wireless Adapter is a multi-function USB wireless adapter connecting USB-equipped desktop or notebook computers with Microchip wireless products for development or application uses. As a development tool, the ZENA Wireless Adapter can be used as a protocol analyzer or as a diagnostic tool. It can also be used to connect the computer as a wireless node to the network for application uses. The ZENA Wireless Adapter is capable of performing a variety of functions and each function can be programmed into the adapter using the built in USB boot loader. ZENA™無線適配器一攬表:
圖6.ZENA™無線適配器外形圖
圖7.ZENA™無線適配器電路圖(1)
圖8.ZENA™無線適配器電路圖(2) ZENA™無線適配器材料清單:
詳情請見: 
75002A.pdf
(793.48 KB)
70664B.pdf
(1.6 MB)
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