• Product Model:
    Directional Coupler (LNDC)



    The LNDC is a standard coupler which is integrated with a low noise amplifier on the coupled port for added output power and port-to-port isolation. A wide selection of amplifiers and customized input/output attenuators provide flexibility in setting gain and power levels. The integrated design makes the LNDC module an excellent space saving option, eliminating the need for an external amplifier and splitter. Please consult our technical staff for assistance in configuring an LNDC module to meet your needs.


    • Input Frequency to 1 GHz
    • Couple Output Level to +20 dBm
    • Intrinsic Phase Noise to -165 dBc/Hz
    • Integral Amplifier and Attenuators


    • Synthesizer Building Block
    • Communication Systems
    • Radar Systems
    • Electronic Warfare Systems


    Low Noise Directional Coupler (LNDC)
    Input Frequency from 5 MHz to 1 GHz, fixed
    Integral Coupler, Amplifier and Attenuators
    Input Level: +10 dBm, minimum
    Output Level (Main Line): 1.5 dBm < Input Level
    Output Level (Coupled Line): To +20 dBm (Consult Factory)
    Port-to-Port Isolation: 20 dB, typical
    Intrinsic Phase Noise Floor to -165 dBc/Hz (Input Referred)
    Current Draw: 80 mA, typical
    Nickel-Plated Machined Aluminum Housing
    SMA(f) Input and Output Connectors, Standard

    Typical Specifications

    LNDC Specs

    Mechanical Drawing

    LNDC mechanical

    Block Diagram

    Ordering Information

    lndc standard oi