2nd Generation
HERD-2
Compact IR-blocking filter for cryogenic quantum processors
Non-magnetic inline filter with ultra-low in-band loss and deep high-frequency attenuation. Reduces quasiparticle generation and improves system stability.
HERD-2 data sheet (PDF)
Performance Data
Transmission characteristics
Fig. 1 — Wide-band0–145 GHz
Flat in-band response with high-frequency absorption above 65 GHz. VNA noise floor shown for reference.
Fig. 2 — In-band detail0–14 GHz
Insertion loss <0.15 dB typical across DC–8 GHz passband with minimal variation.
Technical Specs
Product specifications
Electrical
| Design Impedance | 50 Ω |
| Operating Temperature | 0 K – 320 K |
| Passband | DC – 13.5 GHz |
| RF Input Power | ≤ 30 dBm |
| Stopband | 70 – 145 GHz min. |
| Insertion Loss (Passband) | <0.15 dB typ. |
| Return Loss (Passband) | >20 dB typ. |
| Return Loss (>20 GHz) | >7 dB typ. |
| RF Connectors | SMA, SMP, SMPM, SMPS |
Mechanical
| Length | 63 mm |
| Width | 9.525 mm |
| Construction | Non-magnetic |
Custom configurations: Male/female connector options available. Contact us for specific requirements.
Applications
Designed for your quantum stack
HERD-2 is optimized for high-density cryostat configurations, providing superior infrared blocking in a compact, non-magnetic form factor.
- High-density cryostat configurations
- Multiplexed qubit readout systems
- Research and production environments
- Direct integration with existing wiring
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