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參數(shù)資料
| 型號： | AC118A-60-44 |
| 元件分類： | 衰減器 |
| 英文描述： | 0 MHz - 4000 MHz RF/MICROWAVE VARIABLE ATTENUATOR, 0.4 dB INSERTION LOSS-MAX |
| 文件頁數(shù)： | 1/3頁 |
| 文件大?。?/td> | 153K |
| 代理商： | AC118A-60-44 |
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.
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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