Spectrum Analyzer Extension (SAX) modules provide high performance broadband down-conversion and frequency extension of microwave spectrum analyzers into the THz range. VDI SAX modules offer full waveguide band coverage and are available from WR28 (26 to 40 GHz) to WR1.0 (750 to 1100 GHz) with additional bands under development.
For spectrum analyzer extension mode, this turn-key, sweepable solution is compatible with most modern spectrum analyzers with external mixer option. For block down- and up-conversion, the SAX modules can be driven by an LO signal generator that meets the input frequency and power requirements.
| Key Features |
| Full waveguide band coverage |
| Low-conversion loss and noise figure |
| Broadband IF up to 40 GHz for block down-conversion. |
| 8" x 5" x 3" enclosure suitable for standalone operation or mounting on optical tables and probes |
| 9V DC power supply included |
| Specifications |
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| Calibration Kits |
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| Model Overview |
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| Waveguide Flange | Frequency GHz | Calibration Kit |
| WR15 | 50 to 75 | N5262AC15 |
| WR12 | 60 to 90 | N5262AC12 |
| WR10 | 75 to 110 | N5262AC10 |
| WR8.0 | 90 to 140 | N5262AC08 |
| WR6.5 | 110 to 170 | N5262AC06 |
| WR5.1 | 140 to 220 | N5262AC05 |
| WR4.3 | 170 to 260 | N5262AC04 |
| WR3.4 | 220 to 325 | N5262AC03 |
| Specifications |
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Spectrum Analyzer
Extension Modules
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| Model Overview |
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| Model | RF Frequency Band
(GHz)
| RF Power Limits
(Compression / Damage)
| Intrinsic Mixer Conversion Loss
(Typical dB)*
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| WR28 | 26 - 40 | -4 / 6 | 9 |
| WR19 | 40 - 60 | -10 / 0 | 9 |
| WR15 | 50 - 75 | -10 / 0 | 9 |
| WR12 | 60 - 90 | -10 / 0 | 10 |
| WR10 | 75 - 110 | -10 / 0 | 10 |
| WR8.0 | 90 - 140 | -10 / 0 | 10 |
| WR6.5 | 110 - 170 | -10 / 0 | 10 |
| WR5.1 | 140 - 220 | -10 / 0 | 11 |
| WR4.3 | 170 - 260 | -10 / 0 | 11 |
| WR3.4 | 220 - 330 | -20 / -10 | 14 |
| WR2.8 | 260 - 400 | -10 / 0 | 13 |
| WR2.2 | 330 - 500 | -20 / -10 | 16 |
| WR1.5 | 500 - 750 | -20 / -10 | 18 |
| WR1.0 | 750 - 1,100 | -20 / -10 | 30 |
| WR0.65 | 1,100-1,500 | -20 / -10 | 33 |
Note:
* Intrinsic mixer conversion loss is measured before any IF amplification.
| Specifications |
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Spectrum Analyzer
Extension Modules
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| Model Overview |
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| Model |
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| IF Frequency (GHz)¹ |
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| Without -UP Option, High Freq.
IF Output
| With -UP Option, High Freq.
IF Output
(IF Input)
| With -UP Option, High Freq.
IF Output
(IF Output)
| Displayed Average Noise Level
(dBm/Hz)²
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| WR28 | 0.1-4 | 1-4 | 0.1-4 | -150 |
| WR19 | 0.1-6 | 1-6 | 0.1-6 | -150 |
| WR15 | 0.1-7.5 | 1-7.5 | 0.1-7.5 | -150 |
| WR12 | 0.1-9 | 1-9 | 0.1-9 | -150 |
| WR10 | 0.1-11 | 1-11 | 0.1-11 | -150 |
| WR8.0 | 0.1-14 | 1-14 | 0.1-14 | -150 |
| WR6.5 | 0.1-17 | 1-17 | 0.1-17 | -150 |
| WR5.1 | 0.0001-22 | 1-20 | 0.1-20 | -150 |
| WR4.3 | 0.0001-26 | 1-20 | 0.1-20 | -150 |
| WR3.4 | 0.0001-40 | 1-20 | 0.1-20 | -150 |
| WR2.8 | 0.0001-40 | 1-20 | 0.1-20 | -145 |
| WR2.2 | 0.0001-40 | 1-20 | 0.1-20 | -150 |
| WR1.5 | 0.0001-40 | 1-20 | 0.1-20 | -150 |
| WR1.0 | 0.0001-40 | 1-20 | 0.1-20 | -135 |
| WR0.65 | 0.0001-40 | 1-20 | 0.1-20 | -130 (est.) |
Notes:
¹ Maximum IF frequency is limited to 20 GHz when up-conversion option is added. Contact VDI for more information about the -UP40 option, which can increase the IF frequency for up-conversion and down-conversion up to 40 GHz.
² Displayed Average Noise Level (DANL) measurements taken on Keysight PXA based on compression levels listed above. For small signal analysis, DANL can be enhanced with external IF amplification. Contact VDI for more information.
| Specifications |
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| M937xA PXI-VNA Based Configuration |
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| Model | 2-Port (Quantity) | 4-Port (Quantity) |
| N5262ACXX Calibration Kit | 1 | 1 |
| P937xA Streamline USB VNA Based Configuration |
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| N5262ACXX Calibration Kit | 1 | -- |
| Specifications |
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| M980xA PXI-VNA Based Configuration |
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| Model | 2-Port
(configured with one 4 or 6-port PXI VNA)
| 2-Port
(configured with two 2-port PXI VNAs)
| 4-Port |
| N5262ACXX Calibration Kit | Quantity: 1 | Quantity: 1 | Quantity: 1 |
| P50xxA Streamline USB VNA Based Configuration* |
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| Model | 2-Port
(configured with one 4 or 6-port Streamline USB VNA)
| 2-Port
(configured with two 2-port Streamline USB VNAs)
| 4-Port |
| N5262ACXX Calibration Kit | Quantity: 1 | Quantity: 1 | Quantity: 1 |
