Rohde & Schwarz SMIQ03HD 300KHz – 3.3GHz Signal Generator

The Rohde & Schwarz SMIQ03HD is a signal generator covering 300 kHz to 3.3 GHz, engineered for wireless communication system development, testing, and production. It delivers high spectral purity with advanced modulation capabilities spanning analog and digital protocols. The instrument employs broadband I/Q modulation with DSP-based digital signal processing to achieve precise vector accuracy across PSK, QAM, and FSK modulation schemes, supporting multiple digital radio standards.

Technical Specifications

Frequency Range: 300 kHz to 3.3 GHz Output Power: Up to +30 dBm PEP (with R&S SMIQB57 option) Modulation Support:

• Analog: FM, PM (with optional R&S SMIQB5)


• Digital: PSK, QAM, FSK with coding options


• Broadband I/Q modulation with superior vector accuracy Signal Quality:


• Spectral purity: Excellent


• Error Vector Magnitude (WCDMA 3.84 Mcps): 4% RMS typical


• Harmonics level: < −30 dBc, −40 dBc typical


• Linearity error: < 0.2 dB over temperature, 0.1 dB typical


• Output level repeatability: 0.05 dB typical (ALC ON in CW mode; ALC OFF over 5 minutes and 5°C interval) Performance Metrics (WCDMA with R&S SMIQB57):


• Single carrier (2110–2170 MHz): 77 dB adjacent channel, 82 dB alternate channel


• Multi-carrier configurations: - 2 carriers (11 dB crest factor): 62 dB adjacent, 64 dB alternate - 3 carriers (11.3 dB crest factor): 63 dB adjacent, 65 dB alternate - 4 carriers (11.8 dB crest factor): 62 dB adjacent, 64 dB alternate Switching Performance:


• Frequency/level setting: < 3 ms / < 2.5 ms


• List mode: < 500 µs


• Fast Restore mode: < 800 µs

Key Features

• DSP-based broadband digital modulation for multi-standard protocol support


• Output level accuracy with excellent linearity across operating range


• Fast frequency and amplitude switching for automated testing sequences


• Optional high-power WCDMA capability with configurable I/Q filters

Optional Modules

• R&S SMIQB57: High ACLR for WCDMA 3GPP (2110–2170 MHz), factory installation


• R&S SMIQB11: Data Generator


• R&S SMIQB17: Noise Generator and Distortion Simulator


• R&S SMIQB45: Digital Standard WCDMA 3GPP

Typical Applications Wireless communication R&D, 3GPP standard validation, multi-carrier signal generation, protocol conformance testing, and RF subsystem characterization.