Anechoic chamber Anechoic chamber for antenna evaluation
Japan Shield Enclosure Co., Ltd.
About This Product
■Summary
Similar to EMC anechoic chambers, anechoic chambers are essential for antenna evaluation and design. The pyramid-shaped radio wave absorber has excellent radio wave absorption properties, and its unique design creates an environment close to free space, allowing us to provide anechoic chambers tailored to your purpose.
■Features
・Application: For development and design of antenna evaluation.
・Microwave anechoic chamber with a radio wave absorber installed inside the shield room.
・Can be designed from small to large sizes. Small anechoic boxes can also be manufactured.
- Supports antenna directivity, pattern measurement, and effective radiated power measurement.
- We also have incidental equipment such as turntables and positioners.
■About free space/standing wave ratio method
The free space standing wave ratio method is a method for evaluating anechoic characteristics within the quiet zone of an anechoic chamber, and is widely used as a de facto standard today.
In an anechoic chamber, standing waves are generated by interference between direct waves and reflected waves from each wall. By moving the receiving antenna within the quiet zone, the amplitude of the standing wave is measured and the amount of reflection is determined. At this time, by using a directional antenna for transmitting and receiving, it is possible to know the amount of reflection from each wall and the direction of arrival. Measurements of standing waves are performed at fixed angles in the azimuth and elevation directions, and the worst value obtained is taken as the anechoic characteristic.
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Product
Anechoic chamber Anechoic chamber for antenna evaluation
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Handling Company
Japan Shield Enclosure Co., Ltd.
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Categories
1 Models of Anechoic chamber Anechoic chamber for antenna evaluation
| Product Image | Part Number | Price (excluding tax) | Connector panel | Distribution board | Door | Exterior | External dimensions | Illumination | Interior | Isolation transformer | Optional air conditioning equipment | Optional communication equipment | Optional disaster prevention equipment | Optional positioner light specifications | Optional signal connection equipment | Optional software | Optional test stand | Options Others | Outlet | Performance | Power filter | Radio wave absorber | Structure | Ventilation fan | Ventilation hole |
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Anechoic chamber for antenna evaluation |
Available upon quote | Steel plate t3.2 x W300 x H300 (with holes and plating) N type x 2, SMA type x 2, through sleeve φ50 x 1 piece | Distribution board (breaker included) | Knife edge single opening Effective opening W900×H2,000mm | Galvalume steel plate | W3,000×D7,000×H3,000mm | Incandescent lighting ・10W indicator light (light in use) | Embodies radio wave absorption (partial protection plate) Floor surface: Long sheet pasted finish | 1φ100/100V 2kVA 2 units (for lighting/outlet) | Complete set of air conditioning work (shield honeycomb for air conditioning, etc.) | TEL, LAN, intercom, USB1.1, GP-IB, RS-232C, etc. | Emergency lighting, speakers, patrol lights, buzzers, CO sensors, etc. |
Turntable: resolution 0.1°, diameter 400mm ・Rotation speed 0.4~8rpm ・Allowable load 100Kg Rotation positioner: resolution 0.1° ・Rotation speed 0.25~2.5rpm |
Penetration sleeve, connector panel (various coaxial connectors) | Antenna pattern software | Wooden test stand Can be manufactured according to required dimensions. | ITV camera system, various piping (air, water, etc.), observation window, changes in baked-on shield panel specifications, etc. | 3 double outlets with 2PE | Shielding performance: 30MHz~10GHz 80dB or more Anechoic characteristics (typical example): 1GHz/18dB 5GHz~/40dB or more |
1φ100V 20A 2 units (for lighting/outlet) DC24V 1A 4 units (for fire alarm) |
JSE-12 H=300mm 6 sides pasted 1 floor walking path | External: Electromagnetic shield panel Internal: Radio wave absorber JSE-12 | 30cm supply/exhaust type ventilation fan | W265×H265mm 2 sides |
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