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  • Low VSWR Waveguide Variable Attenuators
  • Low VSWR Waveguide Variable Attenuators
  • Low VSWR Waveguide Variable Attenuators
  • Low VSWR Waveguide Variable Attenuators
  • Low VSWR Waveguide Variable Attenuators

    Features:

    • Low VSWR

    Applications:

    • Wireless
    • Transmitter
    • Laboratory Test
    • Radar

    Waveguide Variable Attenuators

    In microwave circuits, the power of signals is often very high. If excessive power cannot be fully controlled, it will easily cause many problems in the circuit, such as exceeding the maximum energy tolerance range of circuit components and causing various deviations. The use of waveguide attenuators can effectively meet the demand for reducing signal power and ensure the normal operation of microwave circuits.
    The working principle of waveguide attenuator is based on the propagation characteristics of electromagnetic waves in waveguides. It mainly consists of waveguides, impedance matching devices, and variable conductor blocks. When a signal passes through a waveguide, a portion of the energy is absorbed by the conductor block, thereby reducing the signal power
    When the conductor block is a mechanical structure that can be manually adjusted by the user, it is a waveguide variable attenuators. The waveguide variable attenuators are indispensable helpers in electronic communication systems.

    Application:

    1. To ensure the balance of signal levels in the signal chain, waveguide manually adjustable attenuators can be achieved by reducing signal strength.
    2. Expanding the dynamic range of the system is also a strong point of the waveguide manually adjustable attenuator, which can ensure stable operation of the system.
    3. Providing impedance matching can avoid signal reflection and loss, ensuring the stability of signal transmission.

    The waveguide variable attenuator is widely used in microwave communication and laboratory testing. It can be used to adjust signal strength to meet different needs. For example, in the laboratory, waveguide variable attenuator can provide flexible adjustment capabilities when signal strength needs to be changed to test equipment performance. In microwave communication, waveguide variable attenuators can be used to adjust signal strength to ensure that the signal is not too strong or too weak during transmission.
    The advantages of waveguide variable attenuators are simplicity, ease of use, and flexible adjustment. By manual operation, users can precisely control the amount of signal attenuation as needed. However, compared to automatic waveguide attenuators, the adjustment range of manual waveguide attenuators may be narrower, and the adjustment process requires a certain amount of time and accuracy.

    Qualwave supplies low VSWR and high attenuation flatness from 0.96 to 110GHz. The attenuation range is 0~30dB.

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    Part Number

    Frequency

    (GHz, Min.)

    Frequency

    (GHz, Max.)

    Attenuation Range

    (dB)

    VSWR

    (max.)

    Waveguide Size

    Flange

    Material

    Lead Time

    (weeks)

    QWVA-10-B-12 75 110 0~30 1.4 WR-10(BJ900) UG387/UM Brass 2~6
    QWVA-12-B-7 60.5 91.5 0~30 1.4 WR-12(BJ740) UG387/U Brass 2~6
    QWVA-15-B-6 49.8 75.8 0~30 1.3 WR-15(BJ620) UG385/U Brass 2~6
    QWVA-19-B-10 39.2 59.6 0~30 1.25 WR-19(BJ500) UG383/UM Brass 2~6
    QWVA-22-B-5 32.9 50.1 0~30 1.3 WR-22(BJ400) UG-383/U Brass 2~6
    QWVA-28-B-1 26.5 40.0 0~30 1.3 WR-28(BJ320) FBP320 Brass 2~6
    QWVA-34-B-1 21.7 33.0 0~30 1.3 WR-34(BJ260) FBP260 Brass 2~6
    QWVA-42-B-1 17.6 26.7 0~30 1.3 WR-42(BJ220) FBP220 Brass 2~6
    QWVA-51-B-1 14.5 22.0 0~30 1.25 WR-51(BJ180) FBP180 Brass 2~6
    QWVA-62-B-1 11.9 18.0 0~30 1.25 WR-62(BJ140) FBP140 Brass 2~6
    QWVA-75-B-1 9.84 15.0 0~30 1.25 WR-75(BJ120) FBP120 Brass 2~6
    QWVA-90-A-2 10 11 0~30 1.5 WR-90(BJ100) FDP100 Aluminium 2~6
    QWVA-90-B-1 8.2 12.4 0~30 1.25 WR-90(BJ100) FBP100 Brass 2~6
    QWVA-112-A-2 7 8 0~30 1.5 WR-112(BJ84) FDP84 Aluminium 2~6
    QWVA-112-B-1 6.57 9.99 0~30 1.25 WR-112(BJ84) FBP84 Brass 2~6
    QWVA-137-B-2 5.38 8.17 0~30 1.25 WR-137(BJ70) FDP70 Brass 2~6
    QWVA-159-A-2 4.64 7.05 0~30 1.25 WR-159(BJ58) FDP58 Aluminium 2~6
    QWVA-187-A-2 3.94 5.99 0~30 1.25 WR-187(BJ48) FDP48 Aluminium 2~6
    QWVA-229-A-2 3.22 4.90 0~30 1.25 WR-229(BJ40) FDP40 Aluminium 2~6
    QWVA-284-A-2 2.60 3.95 0~30 1.25 WR-284(BJ32) FDP32 Aluminium 2~6
    QWVA-340-A-2 2.17 3.3 0~30 1.25 WR-340(BJ26) FDP26 Aluminium 2~6
    QWVA-430-A-2 1.72 2.61 0~30 1.25 WR-430(BJ22) FDP22 Aluminium 2~6
    QWVA-510-A-2 1.45 2.20 0~30 1.25 WR-510(BJ18) FDP18 Aluminium 2~6
    QWVA-650-A-2 1.13 1.73 0~30 1.25 WR-650(BJ14) FDP14 Aluminium 2~6
    QWVA-770-A-2 0.96 1.46 0~30 1.25 WR-770(BJ12) FDP12 Aluminium 2~6

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