射頻單位介紹Radio Frequency Unit Introduction

頻率(赫茲)—向下相容

Frequency (Hertz) — Downward Compatibility

1GHz=1000MHz

1MHz=1000KHz

1KHz=1000Hz

 

‧訊號量測單位

Signal Measurement Units

dB、dBm、dBi

 

‧阻抗Impedance (歐姆ohm) —不相容

Impedance (Ohm) — Incompatibility

50Ω：90% wifi手機、GPS、衛星通訊

50Ω: 90% for Wi-Fi phones, GPS, satellite communication

75Ω：數位型、TV影音

75Ω: Digital, TV audio and video

 

‧NF增益值NF Gain Value

‧Gain值  Gain Value

‧Gain Flatness

‧P1dB(dBm)

‧input max power (no damage)：dBm