RF - EngineerZone

This group hosts discussions and FAQs regarding RF. Please read the Analog Devices EngineerZone Code of Conduct before posting.

by BayMax0916
RF

Latest 1 month ago by Echen5
117 1 0
Answered
ADF4159 AUX 0
Answered

If I intend to design an FMCW radar using ADF5901 and ADF4159, and I only want to use the AUX and RFINA in single-ended mode for connection, is this feasible? In this case, should the corresponding complementary AUX be left floating, and RFINB be grounded...

Microwave and mmWave Transmitters RF Integrated Transmitters Fractional-N PLL adf4159 adf5901 rf and microwave Show More

117 1 0
by AntaurZhang
RF

Started 2 months ago by Echen5
54 0 0
Not Answered
AD9361中RFPLL时钟设置 0
Not Answered

在noOS例程中，设定RFPLL时钟频率时，调用函数 int32_t ad9361_rfpll_int_set_rate(struct refclk_scale *clk_priv, uint32_t rate,uint32_t parent_rate) 在这个函数中，计算分频系数前，调用了一个函数ad9361_from_clk() 这个函数是把频率扩大成2倍，这是个什么原因啊？

54 0 0
by xiaoyide
RF

Latest 2 months ago by AntaurZhang
1884 4 0
Answered
请问AD9361的DATA_CLK和ADC COLCK RATE的关系 0
Answered

@@最近在调试AD9361的BBPLL，目前BB PLL 已经锁定。但不知道DATA_CLK这个时钟怎么配置？和ADC 的采样率有什么关系？参考时钟为40MHz，配置的ADC CLK=30.72MHz，检查到 0x05E[7]==1，BBPLL锁定。使用CLKOUT引脚输出ADC_CLK/2，用示波器在CLKOUT引脚可以测到15.36MHz的时钟。但是DATA_CLK引脚测得的时钟为1.92MHz，现在不知道DATA_CLK的时钟对不对，该怎么配置？我想请问一下DATA_CLK和ADC...

ad9361 sdr Wideband Transceiver IC RF Integrated Transceivers

1884 4 0
by jiachen
RF

Latest 3 months ago by Echen5
266 1 0
Not Answered
AD9361 的LO频率偏移 0
Not Answered

我最近在做卫星接收机我在测试1561.098MHz的频点的时候，发现频偏，使用了官方的No os和官方的SPI寄存器纯PL端配置都有频偏，频偏大小在不同使用AD9361的设备上同一个配置文件还不一样使用fmccoms3+zedboard 偏移大于1e5Hz，使用别的设备同一个配置文件偏移也有21000Hz，我想知道是什么导致了如此大的偏移（使用DCXO还是external clock 40MHz）都是如此

ad9361 Wideband Transceiver IC RF Integrated Transceivers

266 1 0
by gchen
RF

Latest 4 months ago by zuohufa
442 2 0
Not Answered
AD9361接收时延不稳定，如何让接收时延固定？ +2
Not Answered

我用 ZYNQ+AD9361 的架构进行直扩信号自收发（外部将 AD9361 发射的信号环回至接收端）， AD9361 的配置在 PS 侧，参考时钟为 40MHz ，采样率为 20MHz 。在外部条件不变的情况下， PS 侧重新启动应用程序（配置 AD9361 ），会导致测距值发生跳变，跳变值为 data_clk 周期的整数倍，且不固定;将 AD9361 的接收频点或发射频点中的任一值改变，让信号失锁，再将接收频点或发射频点改为原来的值，重新锁定后，也会导致测距值发生跳变，跳变值为 data_clk...

442 2 0
by SSK0515
RF

Latest 4 months ago by SSK0515
214 3 0
Not Answered
HMC544A射频开关输出信号质量不好 0
Not Answered

我们的应用场景见下图，使用HMC544A作为射频开关，在10M 和2.5G信号之间切换，输出信号通过SMA射频线缆传输给Driver驱动器进行放大，现在发现在应用时，Driver 2.5Gbps信号输出眼图还可以，切换到10M以后，信号因为为PRBS伪随机码，信号幅度波动比较厉害，想问下有没有好的建议，HMC544A应用原理图和Driver内部结构见图如下：另外下图分别为在SMA射频线缆未连接driver时,RFC端口的输出波形以及链接完毕以后Driver芯片的输出波形： ...

RF Switches

214 3 0
by cb1274
RF

Latest 5 months ago by YYU3
148 1 1
Not Answered
HMC994APM5E的Vgg2供电电压 0
Not Answered

根据器件资料，HMC994APM5E的Vdd可供8~11V，额定最大值表格中指定Vgg2电压为2.5V~(Vdd-5.5)V,有以下疑问 1. 若Vdd使用8V供电，那么Vgg2最大值只能供2.5V吗，是否可以供3.5V？ 2. 器件资料中8V供电的P1dB等其他数据是否是在 Vgg2为2.5V测出来的？

amplifiers 放大器

148 1 1
by lierdd
RF

Latest 7 months ago by Echen5
1010 3 0
Not Answered
AD9361高低温循环测试时，中心频点出现偏重漂移 +1
Not Answered

使用AD9361进行LTE产品开发，在进行产品的高低温循环测试时，发现射频的中心频点出现严重漂移导致无线链路中断，详见附件图片（1795M正常.jpg 和 1795M异常.jpg，中心频点偏移大于1MHz）。 1795M正常.jpg 1795M异常.jpg（图中纵向一格约3MHz，图中中心频点至少偏移了1.4MHz）在射频正常和异常时测试测试ADI芯片输入的19.2M 恒温晶振，19.2M晶振频率输出正常，频率偏差小于4Hz；设备重新启动（重新进行ADI配置后），ADI输出的中心频点恢复正常...

ad9361 Wideband Transceiver IC RF Integrated Transceivers

1010 3 0
by qweqwqreqw
RF

Latest 8 months ago by Echen5
281 1 0
Not Answered
AD9361 0
Not Answered

ad9361 spi工作在模式几？只需要上电，就可以直接对AD9361寄存器进行读写？

Wideband Transceiver IC RF Integrated Transceivers

281 1 0
by nanjingjiangning
RF

Latest 8 months ago by Echen5
324 1 0
Not Answered
adf5355 0
Not Answered

请问为什么用stm32单片机驱动这个adf5355模块时，锁定指示灯无法点亮，也没有输出信号

hardware Fractional-N PLL Phase Locked Loop (PLL) Synthesizer & Translation Loop adf5355

324 1 0

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RF

Answered
ADF4159 AUX 0
Answered

Not Answered
AD9361中RFPLL时钟设置 0
Not Answered

Answered
请问AD9361的DATA_CLK和ADC COLCK RATE的关系 0
Answered

Not Answered
AD9361 的LO频率偏移 0
Not Answered

Not Answered
AD9361接收时延不稳定，如何让接收时延固定？ +2
Not Answered

Not Answered
HMC544A射频开关输出信号质量不好 0
Not Answered

Not Answered
HMC994APM5E的Vgg2供电电压 0
Not Answered

Not Answered
AD9361高低温循环测试时，中心频点出现偏重漂移 +1
Not Answered

Not Answered
AD9361 0
Not Answered

Not Answered
adf5355 0
Not Answered

Answered
ADF4159 AUX 0
Answered

Answered
DC Blocking capacitors 0
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Answered
AD9361的data_clk与参考时钟相位不锁定 0
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Answered
AD9371几点疑问 0
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Answered
AD9371的AD与DA采样率 0
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Answered
经过AD9361之后的波形失真问题 0
Answered

Answered
AD9361 tx secondary filter resistor and capacitor 0
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Answered
2R2T时的收发时序手册上怎么只有p0没有p1 0
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Answered
AD9361直流问题 0
Answered

Answered
有关AD9371片间射频同步的问题，迫切希望能够得到解答。谢谢！ 0
Answered

RF

Answered ADF4159 AUX 0 Answered

Not Answered AD9361中RFPLL时钟设置 0 Not Answered

Answered 请问AD9361的DATA_CLK和ADC COLCK RATE的关系 0 Answered

Not Answered AD9361 的LO频率偏移 0 Not Answered

Not Answered AD9361接收时延不稳定，如何让接收时延固定？ +2 Not Answered

Not Answered HMC544A射频开关输出信号质量不好 0 Not Answered

Not Answered HMC994APM5E的Vgg2供电电压 0 Not Answered

Not Answered AD9361高低温循环测试时，中心频点出现偏重漂移 +1 Not Answered

Not Answered AD9361 0 Not Answered

Not Answered adf5355 0 Not Answered

Answered ADF4159 AUX 0 Answered

Answered DC Blocking capacitors 0 Answered

Answered AD9361的data_clk与参考时钟相位不锁定 0 Answered

Answered AD9371几点疑问 0 Answered

Answered AD9371的AD与DA采样率 0 Answered

Answered 经过AD9361之后的波形失真问题 0 Answered

Answered AD9361 tx secondary filter resistor and capacitor 0 Answered

Answered 2R2T时的收发时序手册上怎么只有p0没有p1 0 Answered

Answered AD9361直流问题 0 Answered

Answered 有关AD9371片间射频同步的问题，迫切希望能够得到解答。谢谢！ 0 Answered

Answered
ADF4159 AUX 0
Answered

Not Answered
AD9361中RFPLL时钟设置 0
Not Answered

Answered
请问AD9361的DATA_CLK和ADC COLCK RATE的关系 0
Answered

Not Answered
AD9361 的LO频率偏移 0
Not Answered

Not Answered
AD9361接收时延不稳定，如何让接收时延固定？ +2
Not Answered

Not Answered
HMC544A射频开关输出信号质量不好 0
Not Answered

Not Answered
HMC994APM5E的Vgg2供电电压 0
Not Answered

Not Answered
AD9361高低温循环测试时，中心频点出现偏重漂移 +1
Not Answered

Not Answered
AD9361 0
Not Answered

Not Answered
adf5355 0
Not Answered

Answered
ADF4159 AUX 0
Answered

Answered
DC Blocking capacitors 0
Answered

Answered
AD9361的data_clk与参考时钟相位不锁定 0
Answered

Answered
AD9371几点疑问 0
Answered

Answered
AD9371的AD与DA采样率 0
Answered

Answered
经过AD9361之后的波形失真问题 0
Answered

Answered
AD9361 tx secondary filter resistor and capacitor 0
Answered

Answered
2R2T时的收发时序手册上怎么只有p0没有p1 0
Answered

Answered
AD9361直流问题 0
Answered

Answered
有关AD9371片间射频同步的问题，迫切希望能够得到解答。谢谢！ 0
Answered