Model 258, High Power Coaxial Fixed Attenuator

Fixed Coaxial Attenuators
Model 258
High Power, N or SMK Connectors
dc to 6.0 GHz
400 Watts
RoHS
Conduction Cooled
TEST DATA: Swept data plots of attenuation and SWR
from 50 MHz to 6 GHz.
CONNECTORS:
Type N connectors per MIL-STD-348
interface dimensions - mate nondestructively with MIL-C39012 connectors. SMK (2.92mm) connectors mate with
SMA, 3.5mm and other 2.92mm connectors.
Options
Description
Options Description
1
SMK Female
3
Type N Female
2
SMK Male
4
Type N Male
Features
o
o
o
o
Precision Connectors with high temperature
support beads.
Designed to meet environmental requirements of
MIL-DTL-3933.
10 Kilowatts peak, Conduction Cooled
Wireless Applications - Optimized for use in the
communications bands.
CONSTRUCTION: Aluminum alloy body, stainless steel
connectors; gold plated beryllium copper contacts.
WEIGHT: 700 g (24.6 oz.) maximum
PHYSICAL DIMENSIONS:
Specifications
NOMINAL IMPEDANCE:
50 Ω
FREQUENCY RANGE:
dc to 6.0 GHz
MAXIMUM DEVIATION OVER FREQUENCY:
Nominal
ATTN (dB)
Deviation (dB)
10, 20, 30, 40
+ 1.25
MAXIMUM SWR:
Frequency (GHz)
SWR
dc - 2.5
2.5 - 6
1.10
1.20
3rd ORDER INTERMODULATION (258-XX-XX-LIM
ONLY): Reflected Levels (IM3), -100 & Through Levels
(IM3), -110 dBc with two input signals @ 869 MHz and 891
MHz with average carrier power levels of +43 dBm each.
POWER RATING: 400 watts average (unidirectional)
to10 kilowatt peak (5 μsec pulse width; 2% duty cycle)with
case temperature held within 100 °C maximum with appropriate conductive heat sink. Maximum power rating into
output port is 40 watts average.
TEMPERATURE COEFFICIENT: <0.0004 dB/dB/°C
TEMPERATURE RANGE: -55 to 100°C (case temperature)
Connector
N Male
N Female
DIM A
22.9 (0.90)
15.0 (0.59)
Connector
2.92mm Male
2.92mm Female
DIM A
14.0 (0.55)
12.7 (0.50)
NOTE: All dimensions are given in mm (inches) and are maximum,
unless otherwise specified.
MODEL NUMBER DESCRIPTION:
Example:
258 - XX - XX - LIM
IM Option*
Basic
Model
Number
Attenuation
Value (dB)
Connector Options
1st digit is input side
2nd digit is output side
* Add -LIM for Low Intermodulation option.
79
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: [email protected]
Revision Date: 9/30/2012