Fixed Coaxial Attenuators
Model 279
Medium Power, SMK Connectors
dc to 40.0 GHz
10 Watts
TEST DATA:
Swept data plots of attenuation and SWR
from 50 MHz to 40 GHz.
CONNECTORS:
SMK (2.92mm) Male/Female connectors
- mate nondestructively with SMA per MIL-C-39012, 3.5mm
and other 2.92mm connectors.
Connector Options
1
2
Type/Description
SMK (2.92mm), Female
SMK (2.92mm), Male
Features
o
o
o
Compact Construction -
Lowest size/power ratio.
Precision injection molded connectors.
Designed to meet environmental requirements of
MIL-DTL-3933.
CONSTRUCTION:
Black, finned aluminum body, gold
plated beryllium copper contacts.
WEIGHT:
200 g (8.0 oz.) maximum
PHYSICAL DIMENSIONS:
Specifications
NOMINAL IMPEDANCE:
50
Ω
FREQUENCY RANGE:
dc to 40.0 GHz
MAXIMUM DEVIATION OVER FREQUENCY:
Nominal
ATTN (dB)
6, 10, 20, 30
Deviation (dB)
+ 1.5
Dash No.
11
12
21
22
Connector Type
SMKFemale/Female
SMK Female/Male
SMK Male/Female
SMK Male/Male
DIM A
MAXIMUM SWR:
Frequency (GHz)
dc - 18
18 - 40
SWR
1.20
1.35
NOTE:
All dimensions are given in mm (inches) and are
nominal, unless otherwise specified.
MODEL NUMBER DESCRIPTION:
Example:
POWER RATING (mounted horizontally):
10 watts
aver-
age (unidirectional)
to 25°C ambient temperature, derated
linearly to 2 Watts @ 125°C. 200 watts
peak
(5
μsec
pulse
width; 5% duty cycle). Maximum power into output port is 5
Watts.
POWER COEFFICIENT:
<0.002 dB/dB/watt
TEMPERATURE COEFFICIENT:
<0.0004 dB/dB/°C
TEMPERATURE RANGE:
-55 °C to 125 °C
279 - XX - XX
Basic
Model
Number
Attenuation
Value (dB)
Connector Options
-11
-12
-21
-22
Female/Female
Female/Male
Male/Female
Male/Male
5305 Spectrum Drive, Frederick, MD 21703-7362
s
TEL: 301-846-9222, 800-638-2048
s
Fax: 301-846-9116
web: www.aeroflex.com/weinschel
s
email: weinschel-sales@aeroflex.com
Revision Date: 2/22/2013
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