
Rohde & Schwarz has ended production of this model. We recommend moving to the successor, R&S®SMB100B. To keep an existing instrument in service, or to look at alternatives, please contact us about availability, used units, compatible alternatives and spare parts.
R&S®SMB100A Discontinued
Microwave signal generator (9 kHz – 40 GHz)
- Category: Analog signal generator
- Manufacturer: Rohde & Schwarz
- Frequency range: 100 kHz to 12.75 GHz / 20 GHz / 31.8 GHz / 40 GHz (depending on the frequency option)
- Frequency resolution: 0.001 Hz
- Frequency synthesis resolution (nom., f = 1 GHz): 0.44 μHz
- Frequency setting time (ALC on, after SCPI command): < 3.5 ms
- Frequency setting time (after list mode trigger): < 1 ms
- Maximum output power (R&S®SMB-B112, 1 MHz < f ≤ 12.75 GHz): +18 dBm
- Maximum output power (R&S®SMB-B120 + SMB-B31, 50 MHz < f ≤ 20 GHz): +16 dBm
- Maximum output power (R&S®SMB-B131/B140/B140N, 10 MHz < f ≤ 40 GHz): +8 dBm
- Minimum output power (R&S®SMB-B112/B120/B131/B140/B140N): –120 dBm
- Level setting resolution: 0.01 dB
- Level setting time (ALC on, after SCPI command): < 3 ms
- Level setting time (after list mode trigger): < 1 ms
- SSB phase noise (f = 1 GHz, 20 kHz offset, 1 Hz measurement bandwidth): < –122 dBc, typ. –128
- SSB phase noise (f = 10 GHz, 20 kHz offset, 1 Hz measurement bandwidth): < –102 dBc, typ. –108
- Harmonics (R&S®SMB-B112/B112L, f > 1 MHz): < –30 dBc
- Harmonics (R&S®SMB-B25 low harmonics filter, 150 MHz < f ≤ 3 GHz): < –58 dBc
- Non-harmonics (23.4375 MHz < f ≤ 1500 MHz, typ.): < –70 dBc, typ. –84
- AM modulation depth range: 0 % to 100
- Successor: R&S®SMB100B
- Data sheet: Download PDF
- Product brochure: Download PDF
- External link: Official product page
Product overview
The R&S®SMB100A is a compact, versatile microwave signal generator reaching up to 40 GHz, extendable to 170 GHz with the R&S®SMZ frequency multipliers. It combines outstanding spectral purity with high output power: typical SSB phase noise of –128 dBc/Hz at 1 GHz and 20 kHz offset, and maximum output power of typ. +27 dBm. Its innovative DDS synthesizer architecture set a new standard in the midrange class, and it covers the analog modulation modes that matter — AM, FM/φM and pulse modulation — for development, production and service work. The instrument occupies just 2U in height and 3/4 of a 19 inch rack width, is the lightest in its class (12.75 GHz model) and has a very low cost of ownership, with LAN, USB and GPIB remote control and emulation of the command sets of several major signal generator brands.
Key features
- Wide frequency range: 100 kHz to 40 GHz (four model options: 12.75 GHz / 20 GHz / 31.8 GHz / 40 GHz)
- Outstanding SSB phase noise: typ. –128 dBc/Hz at 1 GHz / 20 kHz offset; the innovative DDS synthesizer architecture gives best-in-class phase noise at low frequencies
- High output power: typ. max. +27 dBm (12.75 GHz model); high-power option available (R&S®SMB-B31)
- Full analog modulation: AM, FM and φM as standard; optional pulse modulator (R&S®SMB-K21) with an ON/OFF ratio > 80 dB and typ. < 5 ns rise/fall time
- The R&S®SMZ frequency multiplier family extends the frequency range to 170 GHz, correcting the multiplier's frequency response automatically so the pair operates like a single instrument
- The 12.75 GHz model uses a wear-free electronic step attenuator and, with the reverse power protection option (R&S®SMB-B30), stands up to production environments
- Fast switching: frequency setting time < 3 ms (SCPI mode) and < 1 ms in list mode; level setting time < 2.5 ms (SCPI) and < 1 ms in list mode
- Closed-loop power control: with R&S®NRP-Zxx USB power sensors it compensates cabling loss and temperature drift in real time, so the DUT receives exactly the intended power
- Command set emulation: emulates more than 30 instrument command sets, including Keysight/HP E442x, E443x, E8257, PSG, MXG, Aeroflex/IFR and Anritsu
- Compact design: 2U high, ¾ 19" wide, maximum weight 6.9 kg; meets MIL-STD-810E vibration and shock requirements for aerospace and defense field use
Typical applications
- Radar system test (X band, K band, with the pulse generator and pulse train functions)
- Mobile communications development and production test (all ISM bands and the major mobile bands up to 12.75 GHz)
- Satellite communications and antenna measurement (50 GHz to 170 GHz with the R&S®SMZ frequency multipliers)
- Aerospace and defense (wide operating temperature range, MIL-STD-810E qualification, secure data erase support)
- Low-noise receiver sensitivity test (high spectral purity and excellent shielding; a replacement for a fixed-frequency high-quality crystal oscillator)
- Automated test systems (multiple remote control interfaces, command set emulation, 125 W power consumption suited to densely packed racks)
Configure your R&S®SMB100A
Pick a base model and its options, watch your order list build as you go, then send it for a quote in one click. Every order number (Order No.) comes from Rohde & Schwarz factory data.
Hardware options
17 optionsSoftware options (K-options)
3 optionsAccessories
17 optionsAvailable models / variants
The series comes in the 12 variants below. Click “Request a quote” for the full specifications and a quotation for that model from KanTek.
| Model code | Specification differences | |
|---|---|---|
| R&S®SMB100A + R&S®SMB-B112 (1407.2109.02) | 100 kHz to 12.75 GHz, with electronic step attenuator | Request a quote → |
| R&S®SMB100A + R&S®SMB-B112L (1407.2150.02) | 100 kHz to 12.75 GHz, without step attenuator | Request a quote → |
| R&S®SMB100A + R&S®SMB-B120 (1407.2209.02) | 100 kHz to 20 GHz, with mechanical step attenuator | Request a quote → |
| R&S®SMB100A + R&S®SMB-B120L (1407.2250.02) | 100 kHz to 20 GHz, without step attenuator | Request a quote → |
| R&S®SMB100A + R&S®SMB-B131 (1407.2280.02) | 100 kHz to 31.8 GHz, with mechanical step attenuator | Request a quote → |
| R&S®SMB100A + R&S®SMB-B140 (1407.2309.02) | 100 kHz to 40 GHz, with mechanical step attenuator | Request a quote → |
| R&S®SMB100A + R&S®SMB-B140L (1407.2350.02) | 100 kHz to 40 GHz, without step attenuator | Request a quote → |
| R&S®SMB100A + R&S®SMB-B140N (1407.2380.02) | 100 kHz to 40 GHz, with mechanical step attenuator, restricted minimum pulse width | Request a quote → |
| R&S®SMB100A + R&S®SMZ75 (1417.4004.02) | With frequency multiplier, extended to 50 GHz to 75 GHz | Request a quote → |
| R&S®SMB100A + R&S®SMZ90 (1417.4504.02) | With frequency multiplier, extended to 60 GHz to 90 GHz | Request a quote → |
| R&S®SMB100A + R&S®SMZ110 (1417.5000.02) | With frequency multiplier, extended to 75 GHz to 110 GHz | Request a quote → |
| R&S®SMB100A + R&S®SMZ170 (1417.5500.02) | With frequency multiplier, extended to 110 GHz to 170 GHz | Request a quote → |
Frequently asked questions
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