SMW C-Band BDC 3.40-4.80 GHz

The C-Band PLL Block Down Converter (BDC) is designed for receiving C-Band signals within the 3.40 to 4.80 GHz frequency range. It offers a configurable fixed gain from 0 dB to 50 dB, set at the factory. Typically, it operates alongside an external C-band low-noise amplifier (LNA).

The RF input is provided via an SMA female connector, while the IF output delivers an inverted L-Band spectrum through N-type, F-type, or SMA connectors.

Available customization options include tailored LO frequencies, adjustable gain settings, a dedicated DC power input, and a separate port for an external 10 MHz reference signal.

Specification Details
Model SMW C BDC 3.40–4.80 GHz 1 Band
Input Frequency 3.400–4.800 GHz
LO Frequency 4.55 GHz
Output Frequency 950 – 2150 MHz
Input Connector SMA female, 50 Ω
Input VSWR 2.3:1 max.
DC Input +12 to +18 V, 430 mA typ. (supplied through output connector)
Gain 0 dB to 50 dB in 5 dB steps (factory programmable)
Flatness ± 0.4 dB max. within 30 MHz, ±2 dB across the full band
Noise Figure 3.0 dB / 289 K typical @ 50 dB gain
Phase Noise -40 dBc/Hz at 10 Hz
Group Delay ±1 ns max.
LO Leakage -60 dBm max. @ RF input
Image Rejection 40 dB min.
Output P1dB +15 dBm typ.
Output IP3 +25 dBm typ.
Output VSWR 2.1:1 max.
Output Connector F-type 75Ω, N-type 50Ω, or SMA-type 50Ω
Storage & Operating Temp -40 to +80ºC, -40 to +176°F
Dimensions 127 x 80 x 30 mm (F- & SMA-connector), 133 x 80 x 30 mm (N-connector)
Weight 330 g (F- & SMA-connector), 344 g (N-connector)
MTBF >489,000 hours (Ground Fixed), >245,000 hours (Airborne)
Options Custom configurations, low profile to fit 1U, separate SMA connector for DC input or Ext. 10 MHz ref.