TYPICAL PERFORMANCE
CSD-20N-0.45G
Coupling
-18
-18.5
-19
Coupling (dB)
-19.5
-20
-20.5
-21
-21.5
-22
380
Insertion Loss(dB)
1
0.75
0.5
0.25
0
-0.25
-0.5
-0.75
-1
380
Insertion Loss
400
420
440
460
480
500
520
400
420
440
460
480
500
520
Frequency (MHz)
Frequency (MHz)
VSWR
Port 1
1.5
-5
1.4
Directivity (dB)
-10
-15
-20
-25
-30
380
1.3
1.2
1.1
1
380
Directivity
Port 3
Port 4
0
Port 2
VSWR
400
420
440
460
Frequency (MHz)
480
500
520
400
420
440
460
Frequency (MHz)
480
500
520
MOUNTING CONFIGURATION
GROUND PLANE OF UNIT SHOULD
BE SOLDERED TO GROUND PLANE
OF CIRCUIT BOARD FOR OPTIMUM
PERFORMANCE.
0.537 [13.64]
GROUND PLANE
S
VIA H
UND OUG
GROD THR
TE
PLA
0.063 [1.60]
0.380 [9.65]
0.068 [1.73]
50 OHM LINE
.032 DIELECTRIC THICKNESS
ER = 3.38
TRUTH TABLE
1
1
2
3
4
Input
Output
Isolated
Coupled
2
Output
Input
Coupled
Isolated
3
Isolated
Coupled
Input
Output
Coupled
Isolated
Output
Input
Merrimac Industries / 41 Fairfield Place, West Caldwell, NJ 07006
Tel: 1.888.434.MMFM / Fax: 973.882.5990 / Email: crm@merrimacind.com / www.merrimacind.com
0.034 TYP. [0.86]
0.050 [1.27]
4
MERRIMAC [ MERRIMAC INDUSTRIES, INC. ]
