Rohde & Schwarz SMIQ Series RF Vector Signal Generators

The SMIQ family provides a selection of upper frequency limits tailored to various application scopes. The SMIQ02E covers a frequency range of 300 kHz to 2.2 GHz, making it well-suited for standard mobile phone design and test applications. For wider bandwidth requirements, the SMIQ03, SMIQ03E, and SMIQ03B extend coverage to 3.3 GHz, which supports digital video system design and wideband CDMA testing. For applications requiring higher frequency limits, the SMIQ06B extends the operational frequency range up to 6.4 GHz.

Modulation schemes vary by model to address specific design challenges. The SMIQ02E features digital I/Q modulation via a Universal Modulation Coder. The SMIQ03B contains a standard built-in I/Q modulator with an input bandwidth of DC to 30 MHz and fast frequency hopping, offering a pulse modulation rise/fall time of less than 20 ns (typically 10 ns) and an on/off ratio exceeding 80 dB. In contrast, the SMIQ06B can be configured with Option SMIQB17 to generate Additive White Gaussian Noise (AWGN) alongside its RF vector signal output.

All instruments in the SMIQ line are designed for integration into automated test environments, providing GPIB (IEEE 488.2) and RS-232 interfaces. The SMIQ06B standardizes on the SCPI command language. For clock synchronization, the models accept a 10 MHz external reference input. The SMIQ03B provides flexibility in clock stability, offering standard aging of less than 1 × 10^-6 per year, which can be enhanced with the Option B1 oven-controlled crystal oscillator (OCXO) to achieve an aging rate of less than 1 × 10^-9 per day.