The Rohde & Schwarz SMIQ03HD is a high-performance signal generator for RF and digital communication testing, operating from 300 kHz to 3.3 GHz. It delivers precise analog modulation (AM, FM/PM) and advanced digital modulation across GFSK, GMSK, and π/4 DQPSK protocols, with enhanced 3GPP W-CDMA support via optional modules. The instrument combines a broadband I/Q modulator with vector accuracy and DSP-based signal processing to achieve exceptional spectral purity and modulation fidelity.
Technical Specifications
Frequency Range: 300 kHz to 3.3 GHz
Modulation Capabilities:
• Analog: AM, FM/PM
• Digital: GFSK, GMSK, π/4 DQPSK, 3GPP W-CDMA (with options)
• Broadband I/Q modulator with vector accuracy
• DSP-based digital modulation processing
Performance Metrics:
• Error Vector Magnitude (WCDMA, 3.84 Mcps): 4% rms typical
• Repeatability (CW mode, ALC ON): 0.05 dB typical
• Linearity error (fixed attenuator): <0.2 dB over temperature, 0.1 dB typical
• Harmonics (level <25 dBm PEP): <–30 dBc, –40 dBc typical
• Harmonics (level <15 dBm PEP): 74 dB, 77 dB typical; (10 MHz offset): >79 dB, 82 dB typical
• 1 DPCH configuration (5 MHz offset): >75 dB, 78 dB typical; (10 MHz offset): >81 dB, 84 dB typical
Multi-Carrier WCDMA ACLR:
• 2 carriers (5 MHz I/Q filter): >60 dB, 64 dB typical (5 MHz offset); >65 dB, 68 dB typical (10 MHz offset)
• 3 carriers (7.5 MHz I/Q filter): >59 dB, 63 dB typical (5 MHz offset); >62 dB, 65 dB typical (10 MHz offset)
• 4 carriers (10 MHz I/Q filter): >58 dB, 62 dB typical (5 MHz offset); >61 dB, 64 dB typical (10 MHz offset)
• 4 carriers with SMIQB60 (Arbitrary Waveform Generator): 62 dB adjacent, 64 dB alternate typical
– Key Features
• Integrated I/Q filters with selectable cut-off frequencies: 2.5 MHz, 5 MHz, 7.5 MHz, or 10 MHz
• Optional fading simulator (SMIQB49) for 3G scenarios per 3GPP TS 25.141
• Optional modulation coder and data generator integration
• Support for up to four WCDMA carriers
– Typical Applications
Mobile radio testing, 3G/W-CDMA device validation, multi-carrier signal generation, digital modulation characterization.
– Compatibility & Integration
Works with optional modules including SMIQB57 (W-CDMA band filter), SMIQB49 (3G fading), and SMIQB60 (arbitrary waveform generation).
