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Cavity

Cavity

Electronically tunable Bandpass Filter

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.


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