Rohde & Schwarz SMIQ03E 0.3 to 3.3GHz Signal Generator

The Rohde & Schwarz SMIQ03E is a production-grade signal generator delivering analog and digital modulation across 0.3 GHz to 3.3 GHz. This economical instrument generates TDMA and CDMA signals for major mobile radio standards with vector-accurate I/Q modulation up to 7 Msymbol/s, making it ideal for wireless communications development and manufacturing test environments requiring reliable, repeatable performance.

Technical Specifications

Frequency Range: 0.3 GHz to 3.3 GHz Output Power: Up to +16 dBm with output level accuracy better than 0.5 dB Modulation Capabilities: GFSK, GMSK, and π/4 DQPSK with broadband I/Q modulator. Extended modulation modes and support for digital mobile standards (PHS, NADC, PDC, GSM, IS-95 CDMA) available via options SMIQB10, SMIQB11, and SMIQB42. Symbol Rate: Up to 7 Msymbol/s digitally modulated signal generation Spectral Purity: Typically −130 dBc (1 Hz) at 1 GHz, 20 kHz carrier offset Switching Speed: Frequency setting <3 ms, level setting <2.5 ms (without mechanical attenuator switching); frequency hopping 500 µs Data Memory: 4 Mbit internal generator (with SMIQB11 option) Fading Simulation: Available with SMIQB14 option Power Supply: 90–132 V / 180–265 V (auto-ranging), 47–440 Hz, max 300 VA Physical: 435 mm W × 192 mm H × 460 mm D; 25 kg fully equipped

Key Features

• Low phase noise optimized for production workflows


• Fast frequency and level settling enables efficient test sequences


• High output level with tight accuracy supports demanding applications


• Modular option structure allows cost-effective scaling to specific standards


• Three-year calibration cycle

Typical Applications Wireless communications development, mobile radio standard validation, production testing of TDMA/CDMA devices, and signal simulation for transceiver characterization.

Compatibility & Integration Remote control via IEC 625 (IEEE 488) interface with SCPI 1993.0 command set enables integration into automated test systems.