型号:RK20-544P-4G Frequency range 1 RF-specifications: 1.1 Coupler type RK20, 20 dB 1.2 Impedance 50 Ω 1.3 Input power 50 W max. 1.4 Frequency range 500 - 4000 MHz 1.5 VSWR (at all ports) min. typ. max. 1.1 1.25 1.6 Insertion Loss 0.4 dB 0.5 dB 1.7 Coupling 20 ±0.5 dB 1.8 Coupling flatness @ 800 - 3800 MHz ±0.5 dB ±1.0 dB 1.9 Directivity @ 0500 - 3000 MHz @ 3000 - 4000 MHz 20 dB 25 dB 13 dB 18 dB