Rohde & Schwarz SMIQ02E 300kHz to 2.2GHz Signal Generator

The Rohde & Schwarz SMIQ02E is a compact signal generator covering 300 kHz to 2.2 GHz, engineered for production environments where cost-effective performance matters. It delivers both analog and digital modulation across evolving mobile radio standards, with frequency resolution to 0.1 Hz and output power spanning −144 dBm to +13 dBm. The broadband I/Q modulator ensures outstanding vector accuracy, while phase noise reaches −126 dBc at 1 GHz (20 kHz offset).

Digital modulation extends to 7 Msymbol/s, supporting GFSK, GMSK, and π/4 DQPSK via optional modules. Fast frequency switching in 20 ms and sub-ppb time base stability (0.000001 /yr) enable rapid test transitions and long-term coherence. Remote control via GPIB bus and high-speed data interfaces (USB 3.0, 1 Gbit LAN, proprietary HS Digital I/Q) streamline production integration.

Technical Specifications

• Frequency Range: 300 kHz to 2.2 GHz


• Frequency Resolution: 0.1 Hz


• Frequency Switching Time: 20 ms typical


• Time Base Stability: 0.000001 /yr


• Output Power Range: −144 dBm to +13 dBm


• Phase Noise: −126 dBc at 1 GHz, 20 kHz offset


• Output Impedance: 50 Ω


• VSWR: <1.5 for f ≤ 1.04 GHz; 1.04 GHz


• Symbol Rate (Digital Modulation): Up to 7 Msymbol/s


• Dimensions: 435 mm (W) × 192 mm (H) × 460 mm (D)


• Weight: 25 kg (fully equipped)


• Power Supply: 100 V to 240 V AC (±10%), ≤150 VA, 50–60 Hz

Key Features

• Analog modulation (AM, FM, phase modulation)


• Digital modulation (GFSK, GMSK, π/4 DQPSK) with optional SMIQB10 modulation coder


• Vector signal generation with broadband I/Q modulator


• Pulse modulation capability


• GPIB remote control for automated test sequences


• USB 3.0 and 1 Gbit LAN for file transfer


• Proprietary HS Digital I/Q interface

Typical Applications

• Production testing of mobile radio receivers and transmitters


• TDMA, CDMA, PHS, NADC, PDC, GSM, and IS-95 CDMA standard validation (with standard-specific options)


• Vector signal generation for complex modulation schemes


• Fading and multipath simulation

Compatibility & Integration

• SMIQB10: Digital modulation coder (GFSK, GMSK, π/4 DQPSK)


• SMIQB11: Internal data generator with 4 Mbit memory


• SMIQB14, SMIQB15: Fading simulation modules


• SM-B1: High-stability OCXO reference oscillator


• SM-B5: FM/phase modulation module