NSI-700S-20球面近场量测系统
Model 700S-20 is an ideal system for measuring medium and low gain antennas up to 15 inches (0.38 m) andup to 10 pounds (4.5 kg). The 700S-20 uses a dual-axis, phi-over-theta, high accuracy positioning systemwith an adjustable stand, for probe support. The system is constructed of modular aluminum and components.Thus, the location of the probe, theta, and phi stages can be adjusted to accommodate various antenna sizes,mounting mechanisms, and frequencies. Additionally, the system is easy to assemble and can be quicklydismantled for relocation or storage.
The system interfaces with a wide variety of RF equipment and is capable of measuring amplitude and phasepatterns from X-band to mmWave frequencies. The Model 700S-20 includes NSI Antenna MeasurementSoftware.
The system software runs on a Pentium based measurement workstation and provides automatic setup ofscans based on measurement parameters and desired output. Measured data can be processed for far-fieldor holographic patterns yielding complete characterization of the antenna’s performance. A single data setprovides information on antenna gain, side lobe structure, beam pointing and cross polarization.
- Low Cost & Portable
- Full 360° x 360° coverage
- X-band to mmWave Measurement
- Automatic Electronic Alignment Capability
- Far-field, Holographic and Near-field Patterns
- Far-field Measurement Options Available
- Optional encoder and slip-ring assembly for
| SPECIFICATIONS | |
| Construction | Theta, phi, and pol rotation stages with “L” bracket (aluminum) |
|---|---|
| Drive system | Precision Stepper Motors |
| Scan Area | Full spherical; Phi/Theta - 360° |
| Maximum Antenna Load | 10 lb (4.5 kg) at 9” CG off set |
| Maximum Antenna Diameter: | 15 in (0.38 m) |
| Resolution | 0.015° phi and pol, and 0.01° theta |
| Postition Repeatability | 0.03° RMS |
| Rotational Speed(Theta and Phi) | 30°/sec |
| System Controller | NSI controller with parallel I/O, and serial interface. |
| Measurement Workstation | Measurement workstation computer with large LCD monitor. |
| Stepper Motor Power Amplifier | EIA 19” rack mount. (7” high x 14” deep) |
| Motor Cables | Quick-connect; 40’ (12 m) |
| Scanner Absorber | Absorber Kit (1” flat) |
| Probe | WR90 Open-ended Waveguide Probe SMA (f) transition & Pyramidal absorber (3”) |
| RF Cables | 20 GHz RF Cables |
| Rotary Joint | Qty. 3 - DC-26.5 GHz, (Phi, Theta, Pol) |
| Supported RF Devices | NSI Panther Receiver Subsystem or selection of Agilent, Rohde & Schwarz and Anritsu VNA’s (contact NSI for a complete list) |
| Power | 100-240 VAC switchable, 47-63 Hz, 500 watts |
- Width - 24 “ (0.6 m)
- Depth - 60” (1.5 m)
- Height - 36” (0.91 m)
- Weight - 100 lbs (45 kg) approx
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