The FD1004 is a highpass-lowpass diplexer from Asartech developed for wideband communications and electronic warfare requirements spanning DC to 6 GHz. Its two low-loss paths divide the operating spectrum around a 3000 MHz crossover point, providing separate low-pass and high-pass channels through three SMA female interfaces. The unit supports continuous-wave RF power levels up to 80 W, while maximum insertion loss on either channel is 0.5 dB.
Designed for RF architectures requiring broad frequency coverage within a compact passive component, the FD1004 measures 83 × 43 × 22 mm, uses a 50 Ohm input/output impedance, and operates from -40°C to +85°C. Its channel arrangement provides 50 dB minimum rejection and inter-band isolation across the stated stopband regions, enabling frequency separation for wideband communication and EW hardware used within professional uncrewed-system RF installations.
| LPF channel: | HPF channel: | |
| Frequency range: | DC–3000 MHz | 3000–6000 MHz |
| Insertion loss: | 4.5 dB min. @ 2.6–3 GHz 1 dB min. @ DC–2.6 GHz |
4.5 dB min. @ 3–3.5 GHz 1 dB min. @ 3.5–6 MHz |
| Return loss: | 14 dB max. | 14 dB max. |
| Rejection: | 50 dB min. @ 3600–6000 MHz | 50 dB min. @ DC–2500 MHz |
| Isolation between bands: | 50 dB min. @ 3600–6000 MHz | 50 dB min. @ DC–2500 MHz |
| Dimensions: | 83 × 43 × 22 mm | |
| Power handling: | 80 CW Watt | |
| IN/OUT impedance: | 50 Ohm | |
| Operational temperature range: | -40°C to +85°C | |
| RF connectors: | SMA (Female) – All Ports | |
