Table of Contents
What’s ?
The necessity of a wireless system test has risen by the spread of recent wireless telecommunication equipment as shown in cellular phone, wireless LAN, RF-ID tag and ETC (Electronic Toll Collection system).
It is necessary for a wireless test to be performed in anechoic environment in which an external noise is intercepted and a radio wave does not reflect insidely. An anechoic chamber (room version of a shield box) is proper facilities but needs a wide space and a huge cost.
Especially, the equipment under wireless system test on the production line can not radiate any signal radio wave outside before approval.
The shield box satisfies these conditions.
Mechanism
The radio wave absorber in the shield box prevents the radio wave from reflecting, and produces an anechoic environment. Therefore, the shield box in which the radio wave absorber is installed is also called a radio wave anechoic box. .
The measurements of Transmission frequency, Transmission antenna power, Occupied frequency bandwidth, Adjacent channel leakage power, Modulation factor, Strength of spurious emission, Strength of radio wave emitted secondarily, Signal transmission speed and so on can be performed with a shield box.
Variety of models
The lineup of our shield box is strengthened to meet customer’s various needs. Moreover, customizing such as additional connectors, size or shape is available.
Taurus Series
Good cost-performance and short delivery time.The electromagnetic anechoic box that covers the inside of the shield box with an radio wave absorber.
Hand-in Type
DUT can be operated directly with bare hands while placing it in the box and looking at the inside from the shield window.
Small/Medium Size
Suitable for evaluation of transmission or receiving characteristics of such compact wireless communication equipments as cellular phone, wireless LAN and ETC OBE.
Large Size Type
The most suitable anechoic box for EMI test.
Production Line Type
One-touch lock mechanism for shortening tact time, etc. It is suitable for production line.
Heat dissipation type
By bringing outside air inside the Electromagnetic anechoic box/Shield box, air can be circulated and thermal runaway of the EUT can be suppressed. Of course, the shielding performance is still maintained.
Special Type
Radio wave absorption partition type or ferrite type, etc.
mmWave 5G NR type
Electromagnetic anechoic box/Shield boxfor mmWave 5G NR type
Option
Radio wave absorber, Turntable unit, Wooden table, etc.