Electromagnetic Anechoic Box /Shield Box Small/Medium Size ME8661A
Ideal for RFID / wireless LAN / ETC wireless system tests.
It is a simple electromagnetic anechoic box for stationary use. It has a double structure of a radio wave absorber and an aluminum plate and can measure frequencies from low frequencies to 18 GHz. An acrylic stand for placing the DUT is installed, and the structure is such that the optional receiving antenna can be easily attached.
Specification
| External dimensions | About 820(W)×608(H)×503(D)mm (Excluding protrusions) |
|---|---|
| Internal dimensions | About 690(W)×380(H)×380(D)mm |
| Structure | Double structure of radio wave absorber and aluminum plate |
| Weight | About 38kg (Excluding antennas) |
| Acrylic table dimensions | 200×200mm |
| Connectors |
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| Option |
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If a manual turntable is selected, a height-adjustable acrylic stand is not included.
Radio wave absorber
Radio wave absorber Urethane
The radio wave absorber of the urethane foam, which has similar characteristics with all of linear, elliptic and circular polarizations, is used in Taurus Series.
Antenna
Standard spiral antenna
| Frequency range | 2 to 18GHz |
|---|---|
| Gain(typ.) | -6 to +4.4dBic |
| VSWR | <3.0 |
| Polarized wave | Right Hand Circular Polarization |
| Axial ratio | <3.5dB |
| Use | ETC in-vehicle unit, etc. |
＊Receiving antenna model (Spiral antenna) is same specifications as above.
Standard horn antenna
| Frequency range | 1.6 to 20GHz |
|---|---|
| Gain(typ.) | +5 to +15dBi |
| VSWR | <1.5 |
| Polarized wave | linear polarization |
| MAX input power | 50W(CW) |
| Application | Cellular phone, Wireless LAN, etc. |
＊Receiving antenna model (Horn antenna) is same specifications as above.
Standard portable antenna
Portable Antenna
Each nine kinds of antennas M301 to M310 / M401 to M407 cover the frequency band from 300MHz to 7.2GHz.
Applications
1. Wireless system test
The following wireless system tests can be performed in free space close to the actual usage conditions of mobile phones, ETC on-board units, wireless LAN, wireless communication devices, etc. Tests of power transmission, transmission frequency, spurious, occupied bandwidth, power leakage during carrier off, modulation index, transmission eye aperture ratio, etc.
This wireless system test is performed by placing the DUT on an acrylic table and connecting the output of the receiving antenna mounted at the position opposite to it to a spectrum analyzer, microwave power meter, etc. Therefore, an optional receiving antenna is required when performing this test. Spiral antenna and horn antenna are available as receiving antennas. When installing an antenna with specifications other than these, it can be handled by specifying the frequency band used and the polarization method. The distance between the DUT and the receiving antenna can be 30 cm or more. The optional reference antenna is used when calibrating the RF coupling (loss from the front of the DTU to the receive antenna output SMA connector). Frequency characteristic data of antenna gain, and RF coupling are attached to this reference antenna. The reference antenna and the receiving antenna are the same, but the reference antenna has a fixed base so that it can be placed on an acrylic stand.
2 : Antenna test
By connecting the signal source to the connector for the reference antenna and connecting the measuring instrument to the connector for the receiving antenna, the characteristic data of the antenna can be obtained.
3 : As an electromagnetic anechoic box
It can be used as a mere electromagnetic anechoic box without attaching an antenna. It is most suitable for a simple preliminary experiment of EMC test or when you want to shield from the external electromagnetic field.
Library
Products Catalog
Selection Guide
At MICRONIX, we have prepared many electromagnetic interference (EMI) shielding boxes. If you are having trouble choosing a product, please take a look at our product comparison table.
Please feel free to contact us.
If you want to verify 5G, customize a radio wave shield box, or need product repair, please do not hesitate to contact us about any small matter.