VT30-90~VT550-865 Electronically tunable filter
Frequency range: 30~1000MHz
Features
Double Tuning 0.1dB Chebyshev response
High Q PIN diode tuning
Tuning Voltage: 0.3-20V(DC)
Input P-1 : +10dBm(f c ≥ 90MHz), 0dBm(fc<90MHz)
Tuning speed ≤50us(fc >30MHz)
Typical 2~3 octave bandwidth coverage within 30~1000MHz
Small size microstrip output
Operating Temperature: – 40℃~+85℃
Specification
%3dB Bandwidth 3 ~10%
Fractional BW ripple1) ≤1%
I.L at center frequency 2) 2~6dB
I.L variance3) ≤2dB
Shape Factor (BW30 /BW3) ≤7:1
Maximum VSWR 2.0:1max
Input P-1 +10dBm(TYP, fc ≥90MHz), 0dBm(TYP, f<90MHz)
Tuning Voltage(VT) 1~20V
Note:
1) This is the difference of %3dB bandwidth within the frequency band, see page 68-69 for typical curves.
2) Insertion loss at center frequency is typical value, the wider passband the lower IL. Following method is used to
calculate insertion loss: IL×BW3dB%=20~25, for example %BW is 5% then IL is 4~5dB.
3) See page 60-61 for typical curves.