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Description: This paper presents the key circuits of a 1MHz bandwidth, 750kb/s GMSK transmitter. The fractional-N synthesizer forming the basis of the transmitter uses a combined phasefrequency
detector (PFD) and digital-to-analog converter (DAC) circuit element to obtain >28dB high frequency noise reduction when compared to classicalfrequency synthesis.
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Size: 498848 |
Author: 谢振 |
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Description: This paper presents the key circuits of a 1MHz bandwidth, 750kb/s GMSK transmitter. The fractional-N synthesizer forming the basis of the transmitter uses a combined phasefrequency
detector (PFD) and digital-to-analog converter (DAC) circuit element to obtain >28dB high frequency noise reduction when compared to classicalfrequency synthesis. -This paper presents the key circuits of a 1MHz bandwidth, 750kb/s GMSK transmitter. The fractional-N synthesizer forming the basis of the transmitter uses a combined phasefrequencydetector (PFD) and digital-to-analog converter (DAC) circuit element to obtain> 28dB high frequency noise reduction when compared to classicalfrequency synthesis.
Platform: |
Size: 498688 |
Author: 谢振 |
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Description: 所 设计的 无线数 传模块 由单 片射 频收发 器芯片 波器和压控振荡器组成。压控振荡器由片内的振荡电路
nRF903、微控制器MSP430F1121和接 口芯片75LV4737A 和外接的LC谐振回路组成。要发射的数据通过DATA端
组 成 ，工作 在 915MHz国际通用的 ISM 频 段 ； GMSK／ 输入 。 -Designed by the wireless module from the single-chip RF transceiver chip filter and VCO components. Voltage-controlled oscillator from the oscillator circuit chip nRF903, and MSP430F1121 microcontroller interface chip 75LV4737A and external components of the LC resonant circuit. Want to launch the data through the DATA side of the job at 915MHz international generic ISM band GMSK/input.
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Size: 148480 |
Author: 郑才特 |
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