Low Noise Amplifier, 30 dB 150 kHz To 44 GHz
External Generator Control
High Stability OCXO With Low Phase Noise
Cord Power
Qty: 1Cable 9-Pin(m) - Triple BNC(m)
Qty: 1Cable 9-Pin(m) - 9-Pin(m)
Qty: 1Cable DX Adapter
Qty: 1Manual Set
Qty: 12.92 (F-F) ADAPTER
Qty: 1External Generator Control
Low Noise Amplifier, 30 dB 150 kHz To 44 GHz
High Stability OCXO With Low Phase Noise
Resolution Bandwidths 20/30/40 MHz
Cable 9-Pin(m) - 9-Pin(m)
Qty: 1Cable 9-Pin(m) - Triple BNC(m)
Qty: 1Cable DX Adapter
Qty: 1Cord Power
Qty: 1Manual Set
Qty: 12.92 (F-F) ADAPTER
Qty: 1Content is AI-generated. Verify critical details with manufacturer-provided resources.
The R&S ESW44 covers 2 Hz to 44 GHz with DC coupling, and 10 MHz to 44 GHz with AC coupling on input 1. Input 2 provides coverage from 2 Hz to 1 GHz (DC coupled) or 10 MHz to 1 GHz (AC coupled). The instrument features a YIG preselector for frequencies above 8 GHz, ensuring image rejection and optimal measurement accuracy across the entire range.
The ESW44 provides standard EMI filter bandwidths at 1 Hz, 10 Hz, 100 Hz, 200 Hz, 1 kHz, 9 kHz, 10 kHz, 100 kHz, 120 kHz, 1 MHz, and 10 MHz, measured at the -6 dB point. With the optional R&S ESW-B8 upgrade, additional 20 MHz, 50 MHz, and 80 MHz bandwidths become available. All EMI filters feature a shape factor better than 4:1 (60 dB:6 dB) for precise selectivity.
With the preamplifier off and RF attenuation set to 0 dB, the ESW44 achieves a DANL typically better than -150 dBm normalized to 1 Hz from 1 MHz to 1 GHz. With the optional R&S ESW-B24 low noise amplifier engaged, sensitivity improves significantly, reaching typically -169 dBm (1 Hz) in the 150 MHz to 8 GHz range. At lower frequencies from 9 kHz to 1 MHz, the instrument delivers -145 dBm specified performance.
With RF attenuation at 0 dB, preselection on, preamplifier off, and two tones at -20 dBm, the ESW44 achieves a TOI greater than 8 dBm (typically 11 dBm) from 8 GHz to 13.6 GHz, and greater than 10 dBm (typically 15 dBm) from 13.6 GHz to 40 GHz. Above 40 GHz, the nominal TOI is 12 dBm. For frequencies below 8 GHz with preselection off, TOI exceeds 20 dBm up to 3 GHz.
Yes, the ESW44 features advanced time domain scan capability that processes frequency segments in parallel using FFT techniques with 93% overlap. For example, with a 9 kHz resolution bandwidth, it can process 30 MHz segments simultaneously, dramatically accelerating measurement speed compared to traditional stepped frequency scanning. The receiver scan mode supports up to 4,000,000 trace points and measurement times from 50 microseconds to 100 seconds per subrange.
For CW RF signals with RF attenuation at 0 dB, preselection off, and preamplifier off, the maximum safe input is 20 dBm (0.1 W). With RF attenuation of 10 dB or more and preselection on, this increases to 23 dBm (0.2 W). For pulse signals with attenuation of 10 dB or more, the input can handle up to 150 V peak voltage and 1 mWs pulse energy at 10 microsecond pulse duration. The DC voltage limit is 50 V with AC coupling.
At a 1 GHz carrier, the ESW44 delivers SSB phase noise better than -125 dBc (1 Hz) at 1 kHz offset (typically -130 dBc), improving to better than -134 dBc (1 Hz) at 10 kHz offset (typically -138 dBc) and better than -136 dBc (1 Hz) at 100 kHz offset (typically -140 dBc). With the optional R&S ESW-B4 OCXO precision frequency reference, close-in phase noise at 10 Hz offset improves to -90 dBc (1 Hz) nominal. Residual FM is below 0.1 Hz nominal.
The ESW44 receiver mode offers up to four simultaneously selectable detectors including max peak, min peak, RMS, average, quasi-peak, CISPR-average, and RMS-average. Results are displayed both digitally with 0.01 dB resolution and via analog bargraph displays separately for each detector. This comprehensive detector suite enables full compliance with international EMC standards including CISPR requirements for both peak and weighted average measurements.