Rohde & Schwarz SMIQ03 300MHz to 3.3GHz Vector Signal Generator

The Rohde & Schwarz SMIQ03 is a vector signal generator designed for production of complex modulated signals across 300 kHz to 3.3 GHz. This instrument excels in research, development, and production testing of wireless communication systems, RF components, and modules. Built on advanced DSP technology with a high-grade I/Q modulator, the SMIQ03 delivers high-precision digital modulation at high bit rates with exceptional signal fidelity and low phase noise.

Technical Specifications

Frequency Range: 300 kHz to 3.3 GHz (extended to 6.4 GHz with optional E6GHZ board) Output Power: Up to +16 dBm with precision better than 0.5 dB Setting Performance:

• Frequency setting time: <3 ms (without mechanical attenuator switching)


• Output level setting time: <2.5 ms


• Frequency hopping capability: within 500 µs Spectral Purity:


• Phase noise: Typically −130 dBc/Hz at 1 GHz, 20 kHz offset


• Broadband noise: Typically −136 dBc/Hz (20 MHz to 450 MHz)


• Carrier leakage: Typically <−45 dBc at 0 V input Vector Accuracy:


• Static error vector magnitude (EVM): <0.5% for output levels ≤8 dBm PEP


• Adjacent channel leakage ratio (ACLR): Typically 70 dB for WCDMA signals

Key Features Digital Modulation: Supports GFSK, GMSK, π/4 DQPSK, TDMA, and CDMA formats for standards including PHS, NADC, PDC, GSM, and IS-95. High-precision I/Q modulation via internal baseband generation or external I/Q inputs. Optional internal data generator with up to 4 Mbit memory (Option SMIQB11). Optional fading simulator (1 channel/6 paths or 1 channel/12 paths) and Arbitrary Waveform Generator ARB SMIQB60 available. Analog Modulation: FM/ΦM modulation support with simultaneous digital and analog modulation capability via Option R&S SM-B513. Integration: Accepts external I/Q inputs for custom waveforms. Broadband I/Q modulator ensures excellent vector accuracy and low intermodulation.

Typical Applications

• Wireless communication system testing


• RF component and module validation


• Digital and analog modulation research


• Production testing of mobile radio standards

Compatibility & Integration Discontinued production; available on secondary market. Optional modules enhance fading simulation and arbitrary waveform generation for specialized test scenarios.