Filters and Limiters
Limiters
HP 11867A
HP 11693A
69
HP 11867A and 11693A
These limiters can be used to protect
the input circuits of spectrum
analyzers, counters, amplifiers,
and other instruments from high
power levels with minimal effect on
measurement performance. The
HP 11867A RF limiter (dc to 1800
MHz) reflects signals up to 10 watts
average power and 100 watts peak
power. Insertion loss is less than
0.75 dB. The HP 11693A microwave
limiter (0.1 to 12.4 GHz, useable to
18 GHz) guards against input signals
over 1 milliwatt up to 1 watt average
power and 10 watts peak power.
Filters
HP 11668A
This high pass filter is recommended
for making measurements on active
devices that have high gain below
50 MHz. Use of this filter, with the
HP 11665B modulator, reduces the
modulation drive feedthrough from
8 mV to 1 mV and helps prevent
amplifier saturation.
Specifications
Frequency Range Return Loss Insertion Loss
50 to 100 MHz≥12 dB
100 MHz to 8 GHz≥16 dB
8 to 12 GHz
12 to 18 GHz≥14 dB
Maximum Input: +27 dBm
Connectors: N (f), N (m)
Shipping Weight: 0.28 kg (10 oz)
≥
14 dB
≤
2.5 dB
≤
1.0 dB
≤
1.0 dB
≤
1.5 dB
8
HP 11668A
HP 0955-0759 50 Ω Band Pass Filter
This 50 Ω band pass filter has a center
frequency of 175 MHz, a 3 dB
bandwidth of 150 to 200 MHz, and
50 dB stop band rejection. Insertion
loss is 2.5 dB, SWR is 2:1 and
connectors are type-N (f) to N (m).
HP 0955-0760 75 Ω Band Pass Filter
This 75 Ω band pass filter has a center
frequency of 175 MHz, a 3 dB
bandwidth of 150 to 200 MHz, and
50 dB stop band rejection. Insertion
loss is 2.5 dB, SWR is 2:1 and
connectors are type-N (f) to N (m).
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