Standing wave ratio measuring bridge SWR 2700
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It allows to measure the standing wave ratio and the quality of matching the load with the feeder.
Operating frequency range 1-2700 MHz.
Standing wave ratio measuring bridge (SWR bridge) is a passive device that is designed to measure the reflection coefficient of radio frequency circuits and elements. The source of the RF signal is a swiping generator of the spectrum analyzer, from which the signal is fed to the tested device through the SWR bridge.
Depending on the reflection coefficient of the tested device, part of the signal is reflected to the SWR bridge and then sent to the receiver (to the measuring input of the device), where it is processed and displayed.
The measuring bridge allows to measure the standing wave ratio and the quality of load matching with the feeder. The device is based on the Wheatstone bridge with matching elements.
Device connecting.
The measuring bridge is designed to work in conjunction with the Arinst SSA‑TG R2 spectrum analyzer, but it is also possible to work with devices from other manufacturers.
Designations in scheme:
| TG OUT | Signal generator output | Open | OPEN calibration standart |
| RF IN | Antenna input | Short | SHORT calibration standart |
| TG OUT | Measuring bridge input | Load | LOAD calibration standart |
| TO RF IN | Measuring bridge output | DUT | Test device |
| TEST | Measuring port |
To connect device to the spectrum analyzer Arinst SA-TG and Arinst SA-T GLC you need to purchase additional:
- Art. 737-adapter angular SMA (male) - SMA (male) 2 PCs.
- Art. 459-adapter angular SMA (male) - SMA (female) 2 PCs.
Technical parameters.
| Name of parameter | Values | |
| Frequency range | 1-2700 MHz | |
| VSWR (50 Ohm) ports | < 1,5* | |
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Directivity TO RF IN| TEST port=Short – TO RF IN| TEST port=Load** |
1 MHz to 2200 MHz | > 25 dB |
| 2200 MHz to 2700 MHz | > 15 dB | |
| Coupling (TEST port – TO RF IN) | -10 dB | |
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Insertion loss (TO TG OUT-TEST port) |
1 MHz to 1600 MHz | < 6 dB |
| 1600 MHz to 2400 MHz | < 9 dB | |
| 2400 MHz to 2700 MHz | < 15 dB | |
| Operating temperature range | 0 … +40 °С | |
| Overall dimensions (D×W×H) | without SMA ports | 80×40×28 mm |
| with SMA ports | 80×60×28 mm | |
| Weight | 0,1 kg | |
*- VSWR of the coupled port is not regulated;
**- here and below are the device port notation is shown.
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Dimensions (length , width , height ), mm
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57
x
81
x
27
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Equipment:
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Position
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Measuring bridge
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Adapter SMA(male)-SMA(male), 2 pcs
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Manual
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Package
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Manuals, descriptions:
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Manual
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