Product Information/ PRODUCTS /Low-pass filter
Low-pass filterQFILTER
specification：
RF Low-Pass Filter
- Three reflective 7-pole Pi filter stages, individually shielded
- Attenuates frequencies above 80 MHz
- Total resistance (at room temperature): 2.5±0.2 Ω
- Isolated from ground and other channels > 2 GΩ (at room temperature)
RC Low-Pass Filter
- One reflective 7-pole Pi and two dissipative RC filter stages, individually shielded
- Attenuates frequencies above 50 kHz
- Total resistance (at room temperature): 1700±10 Ω
- Isolated from ground and other channels > 2 GΩ (at room temperature)
Contact window： gary.chang@scientek-co.com
DESCRIPTION
QFilters mounted with the optional jumper cable connecting the 24-channel RC and RF filter banks in series.
RADIO FREQUENCY LOW-PASS FILTER BANK (RF)
- Three reflective 7-pole Pi filter stages, individually shielded
- Attenuates above 225 MHz (80 MHz in previous generations)
- Total resistance (room temp.): 2.0±0.5 Ω
- Isolation to ground and other channels > 2 GΩ (room temp.)
LOW-FREQUENCY LOW-PASS FILTER BANK (RC)
- One reflective 7-pole Pi and two dissipative RC filter stages, individually shielded
- Attenuates from 65 kHz or lower
- Total resistance (room temp.): 1700±10 Ω
- Isolation to the ground and other channels > 2 GΩ (room temp.)
Characteristics design of QFILTER Low-Pass Filter:
- RC and RF filters each have 24 low-pass filter channels.
- Suitable for conventional dilution refrigerator cavity cooling plates.
- Multiple filters can be stacked to achieve higher channel count.
- Signal lines are thermally fixed on non-magnetic gold-plated copper brackets.
- Compatible with low-temperature and high magnetic field environments.
- Non-magnetic shielding 25-pin microD connectors, with built-in input and external output.
- Pinout is compatible with Cinch connectors used in most dilution refrigerators.
- Good performance can be achieved by using optional jumper cables to connect RC and RF lines in series.
- Multiple low-pass filters can be stacked or connected in series to save space and cables.
- Compact dimensions of 30 mm x 47 mm x 70 mm.
