高动态范围 RF 发射器信号链使用单个外部频率参考来生成 DAC 采样时钟和 IQ
调制器 LO。 ADRF6702 IQ 调制器和 AD9122 16 位双路 1.2GSPS TxDAC 的组合具有现代高级 QAM 或基于 OFDM 的无线发射机所需的动态范围。电路的动态范围足以启用 ZIF(零 IF/基带)和 CIF(高达 200 至 300 MHz 的复杂 IF)
说明
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High dynamic range RF transmitter signal chain using single external frequency reference for DAC sample clock and IQ modulator LO generation. The combination of the ADRF6702 IQ modulator and the AD9122 16-bit dual 1.2-GSPS TxDAC has the dynamic range necessary for a modern high level QAM or OFDM based wireless transmitter. The dynamic range of Circuit is good enough to enable both ZIF (zero IF/baseband) and CIF (complex IF up to 200 to 300 MHz)