參數(shù)資料
        型號(hào): AF119A-75-21
        元件分類: 衰減器
        英文描述: 0 MHz - 18000 MHz RF/MICROWAVE VARIABLE ATTENUATOR, 1.5 dB INSERTION LOSS-MAX
        文件頁(yè)數(shù): 1/3頁(yè)
        文件大?。?/td> 153K
        代理商: AF119A-75-21
        5305 Spectrum Drive, Frederick, MD 21703-7362
        TEL: 301-846-9222, 800-638-2048
        Fax: 301-846-9116
        web: www.aeroflex-weinschel.com
        email: weinschel-sales@aeroflex.com
        73
        Revision Date: 12/29/08
        Variable Attenuators
        Models 115A thru 119A
        dc to 18.0 GHz
        Manual Step Attenuators
        2 Watt
        Choice of Type N or SMA Connectors
        Features
        o Safety Mechanical Stop - A mechanical stop between
        maximum and 0 attenuation positions on all models
        prevents damage to the mechanical drive as well as
        preventing large power changes that could cause dam-
        age to sensitive equipment.
        o Choice of Attenuation Ranges - Five standard atten-
        uation ranges are available: 0-9 dB, 0-69 dB, and 0-99
        dB in 1 dB steps, and 0-60 dB and 0-90 dB in 10 dB
        steps.
        o Broadband - All models are available in a choice of 2
        frequency ranges: dc-4 and dc-18 GHz.
        o Right-Angle
        Drive
        -
        The center conductor of the connector is perpendicular
        to the control shaft, offering greater flexibility of applica-
        tions: panel mounting or bench setup. All models are
        bidirectional.
        o Custom Configurations Available Upon Request.
        o Low Deviation from Nominal Value - These Mini Step
        Attenuators have flat frequency response over speci-
        fied bands and excellent attenuation accuracy.
        Deviation from nominal value is low at all settings.
        o Excellent Repeatability and Long Life Switch -
        Repeatability is better than 0.05 dB to 18.0 GHz for
        over 1,000,000 switchings of the drum.
        Description
        The Aeroflex / Weinschel Models 115A through 119A are a
        series of broadband, step attenuators in a right-angle drive
        configuration, where the center conductor of the connector
        is perpendicular to the control shaft. They feature excellent
        performance characteristics suitable for use in high reliabil-
        ity 50 ohm systems and applications requiring extra-small
        components for the precision control of power in discrete
        steps. They can be used either as input or output attenua-
        tors in signal sources, receivers, field strength meters,
        spectrum analyzers, etc.
        Specifications
        NOMINAL IMPEDANCE: 50
        Ω
        FREQUENCY RANGE (add Model No. Prefix to
        Designate Range):
        All Models:
        dc to 4.0 GHz (AC)
        dc to 18.0 GHz (AF)
        STANDARD INCREMENTAL ATTENUATION RANGE:
        Model 115A:
        0 to 9 dB in 1 dB steps
        Model 116A:
        0 to 60 dB in 10 dB steps
        Model 117A:
        0 to 69 dB in 1 dB steps
        Model 118A:
        0 to 90 dB in 10 dB steps
        Model 119A:
        0 to 99 dB in 1 dB steps
        MAXIMUM SWR (Models 117A & 119A):
        Frequency
        115A, 116A
        Range (GHz)
        117A & 119A
        & 118A
        dc - 4
        1.35
        1.25
        4 - 12.4
        1.50
        1.60
        12.4 - 18.0
        1.70
        1.60
        POWER RATING: 2 watts average to 25°C ambient
        temperature, derated linearly to 1 watt @ 54°C. 200 watts
        peak (5
        μsec pulse width; 0.5% duty cycle)
        POWER COEFFICIENT: < 0.005/dB/dB/watt
        TEMPERATURE COEFFICIENT: < 0.0004/dB/dB/°C
        TEMPERATURE RANGE: Operating:
        0°C to +54°C
        Nonoperating: -54°C to +54°C
        INCREMENTAL PHASE SHIFT: ~0.5° per dB x f(GHz)
        REPEATABILITY: Better than 0.05 dB across frequency
        band for switch life.
        SWITCH LIFE: Over 1,000,000 steps
        INDEXING: 36°
        MAXIMUM INSERTION LOSS (dB):
        Model
        CONN
        Frequency Range (GHz)
        Number
        Type
        dc-4
        dc-18
        115A
        N
        0.3
        0.7
        SMA
        0.3
        1.0
        116A
        N
        0.3
        0.7
        SMA
        0.4
        1.0
        117A
        N
        0.5
        1.2
        SMA
        0.6
        1.5
        118A
        N
        0.4
        0.8
        SMA
        0.5
        1.0
        119A
        N
        0.5
        1.2
        SMA
        0.6
        1.5
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