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橫向電磁 (TEM) 單元或 Crawford 單元(以其發明者的名字命名)用於在很寬的頻率範圍內生成精確的電磁波:DC (0 Hz) 到 GHz。 細胞中產生的電磁波以橫向模式傳播,具有與平面波相同的特性。
echnical Specifications | TEM 200 | TEM 500 | TEM 1000 | TEM 3000 |
Frequency range | DC-200 MHz | DC-500 MHz | DC-1GHz | DC-3GHz |
Height under the plate | 27 cm | 14,7cm | 7,3cm | 2,35cm |
Dimensions (LxWxH) | 205x97x58cm | 107x51x33,5cm | 54x45x18cm | 15x8x6cm |
Max. Input power | 1,6KW long term | 1KW long term | 750W long term | 400W long term |
The field for a 25W amplifier | 118V/m | 350V/m | 475V/m | 1,4KV/m |
Impedance | 50 ohm | 50 ohm | 50 ohm | 50 ohm |
VSWR | <1.1 | <1.2 | <1.2 | <1.2 |
Return Loss | >25dB | >20dB | >20dB | >20dB |
Connector type | N or 7/16″ optional | N | N | N or TNC, SMA |
Weight | Approx. 40Kg | Approx. 20Kg. | Approx. 4,8Kg. | Approx. 1,6Kg. |
Options | Signal and power supply filter, Dummy Load: on demand | |||
* Can be equipped with a test setup for IC or PCB acc. to SAE J1752-3 |