Rohde & Schwarz SMBV100B, Руководство пользователя

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Contents
R&S
®
SMBV100B
9 User Manual 1178.4460.02 ─ 03
3.9.4 How to Use the Multi-Carrier Continuous Wave Function...........................................248
3.9.5 References..................................................................................................................249
3.10 Shifting and Boosting the Baseband Signal.......................................................... 250
3.10.1 About the Baseband Offsets....................................................................................... 250
3.10.1.1 Impact of the Frequency Offset...................................................................................250
3.10.1.2 Impact of the Phase Offset..........................................................................................252
3.10.2 Baseband Offsets Settings..........................................................................................252
3.10.3 How to Improve Signal Characteristics by Shifting the Wanted Baseband Signal...... 253
4 Adding Noise and Predistortions, and Impairing the Signal......... 255
4.1 Adding Noise to the Signal...................................................................................... 255
4.1.1 Required Options........................................................................................................ 255
4.1.2 About the AWGN Generator........................................................................................255
4.1.3 AWGN Settings........................................................................................................... 259
4.1.3.1 General Settings......................................................................................................... 260
4.1.3.2 Noise Power/Output Results Settings......................................................................... 262
4.1.4 How to Configure the Noise Generator for Receiver Tests......................................... 267
4.2 Impairing the Signal..................................................................................................269
4.2.1 Required Options........................................................................................................ 269
4.2.2 About the Linear I/Q Impairments............................................................................... 269
4.2.2.1 Gain and Gain Imbalance........................................................................................... 269
4.2.2.2 I and Q Offset..............................................................................................................270
4.2.2.3 Quadrature Offset........................................................................................................271
4.2.3 Analog and Digital Impairments Settings.................................................................... 271
4.2.4 How to Optimize the Carrier Leakage and Sidebands Suppression........................... 275
4.3 Applying Digital Predistortion................................................................................. 276
5 Applying I/Q Vector Modulation........................................................277
5.1 Required Options...................................................................................................... 277
5.2 About the I/Q Modulator........................................................................................... 277
5.3 I/Q Modulator Settings..............................................................................................278
5.4 Frequency Response Settings.................................................................................282
5.5 How to Adjust the I/Q Modulator to Optimize Performance..................................284
6 Configuring the RF Signal.................................................................286