An RF modulator supporting wide-band signals includes IQ modulation by interleaving the in-phase and quadrature signals. The modulator can be implemented using an integrated circuit having a baseband in-phase stage (10) that receives an in-phase analog input signal, a baseband quadrature stage (...
In combination with the Vector Signal Generator R&S SMV03 the I/Q baseband signal can be upconverted to the RF. Each channel can store 16 000 000 samples. Even at high symbol rates sequences of sufficient length can thus be generated. With clock frequencies of up to 100 Msample/s and a...
SIGLENT'S SSG3000X RF Signal Generators have a frequency range of 9 kHz to 2.1 GHz/3.2 GHz. They provide normal analog modulation such as AM, FM, and PM. They also provide pulse modulation and pulse train generator. In addition, when used with baseband gener...
the software allows users to create standard waveforms or customized waveforms with specific modulation and frequency-hopping criteria. In Auto mode, the software can automatically calculate the waveform length (in time (sec), samples, or symbols) and the sampling rate required to accurately create ...
configObject = bluetoothRFPHYTestConfig(Mode=phyMode,...Test=testValue,...CTEType=cteType,...ArraySize=arraySize,...SamplesPerSymbol=sps,...ElementSpacing=elementSpacing,...PacketType=packetType,...CTELength=20,...PulseLength=pulseLength,...ModulationIndex=modulationIndex);if(testValue=="IQ...
Generate random data symbols and apply QPSK modulation. Get M = 4; % QPSK spf = 1e6; % Samples per frame data = randi([0 M-1],spf,1); txSig = pskmod(data,M,pi/4); Create a constellation diagram object to display the QPSK signal before and after IQ imbalance compensation. The...
The processing of the IQ samples should be done outside the callback. It is not the scope of this application report to show how this can be done. The code below simply shows how to get access to the samples and how to handle the queue. void callback(RF_Handle h, RF_CmdHandle ch...
Output RF spectrum due to modulation (M-ORFS) 13.4, 13.17.4 Output RF spectrum due to switching (S-ORFS) 13.4, 13.17.4 Reference sensitivity 14.2 DUT support required Usable input level range 14.3 DUT support required RX level DUT support required. A common test as part of devi...
这取决你观察角度,如果你是RF工程师,可能会习惯用包络Envelope来观察,这时候对你有用的信息是里面加载的讯号(modulation signal)的变化,如果你是个仿真(Analog)工程师,你就是观察电压的变化,那正弦波Sine Wave对你来说就是最大有多少电压Voltage 扫过某个组件的节点,两个观点都对取决你要评估什么东西。
Because the overall efficiency achievable by conventional RF power amplification methods is still quite low (e.g., about 30%), there is a continued need to improve the efficiency of base station RF power amplifier and modulation systems. This efficiency can be significantly improved (e.g., to...