TYPICAL PERFORMANCE
QHD-2N-0.56G
Coupling
-2
-2.2
-2.4
Coupling (dB)
-2.6
-2.8
-3
-3.2
-3.4
-3.6
-3.8
-4
450
475
500
525
550
575
600
Frequency (MHz)
625
650
675
700
-60
450
475
500
525
550
575
600
Frequency (MHz)
625
650
675
700
-50
Isolation (dB)
-20
-30
-40
-10
Direct
Coupled
Isolation
0
VSWR
-85
1.3
1.25
Phase (degrees)
1.2
VSWR
1.15
1.1
1.05
1
450
Phase Balance
Port 3
Port 4
-86
-87
-88
-89
-90
-91
-92
-93
-94
Port 1
Port 2
475
500
525
550
575
600
625
650
675
700
-95
450
475
500
525
Frequency (MHz)
550
575
600
Frequency (MHz)
625
650
675
700
MOUNTING CONFIGURATION
GROUND PLANE OF UNIT SHOULD
BE SOLDERED TO GROUND PLANE
OF CIRCUIT BOARD FOR OPTIMUM
PERFORMANCE.
0.537 [13.64]
0.380 [9.65]
GROUND PLANE
S
VIA H
UND OUG
GROD THR
TE
PLA
0.063 [1.60]
0.068 [1.73]
50 OHM LINE
.032 DIELECTRIC THICKNESS
ER = 3.38
TRUTH TABLE
1
1
2
3
4
Input
Iso
-90°
0°
2
Iso
Input
0°
-90°
3
-90°
0°
Input
Iso
0.034 TYP. [0.86]
0.050 [1.27]
4
0°
-90°
Iso
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
MERRIMAC [ MERRIMAC INDUSTRIES, INC. ]
