Merrimac CSDZ-20H-1.1G Directional coupler Datasheet

CSDZ-20H-1.1G
DIRECTIONAL COUPLER
PRELIMINARY REV: 003, 12/02/05
TECHNICAL DESCRIPTION
FEATURES
• 920 - 1220 MHz
• LOW LOSS
• HIGH DIRECTIVITY
• EXCELLENT COUPLING ACCURACY
• SURFACE MOUNT
APPLICATIONS
• JTRS
The Multi-Mix® CSDZ series provides 20 dB coupling at 1100 MHz. The CSDZ series features accurate
coupling factors, low VSWR, and high directivity. Very low insertion loss and high power handling capability make this series ideal for use in base station power amplifiers particularly in the main loop of the
feedforward amplifiers. The CSDZ series is also ideal for use in RF sampling networks and control circuitry in high power transmitters.
CSDZ directional couplers are based on fusion bonded multilayer stripline structures. The fusion bonding
process yields homogeneous monolithic dielectric structures with reliability, ruggedness, and electrical
and thermal performance that are superior to conventional adhesive bonding techniques.
GENERAL SPECIFICATIONS
FREQUENCY RANGE
(MHz)
INSERTION LOSS
(dB MAX)
MEAN COUPLING
(dB)
VSWR
(MAX, ALL PORTS)
960 - 1220
0.25
20 ± 0.6
1.15:1
FREQUENCY SENSITIVITY
(dB MAX)
DIRECTIVITY
( dB MIN)
AVERAGE POWER
(WATTS, MAX.)
RF
INTERFACE
OPERATING
TEMPERATURE
± 0.30
20
200
Leadless Surface Mount
-55° TO +95° C
PACKAGE OUTLINE/ TAPE & REEL ORIENTATION
DIRECTION OF FEED
.560
[14.224]
PORT 2
PAD 1
P
P0
K
1
0
PORT 1
"A"
"A"
B0
W
.350
[8.890]
CSDZ-20H-1.1G
.040
[1.016] TYP.
MARKED SIDE UP
A0
PORT 4
PORT 3
.059
[1.499] TYP.
.060
[1.524]
SECTION "A"-"A"
W
P1
P0
A0
B0
K0
ENGLISH (in) 1.2598 0.6299 0.1575 0.3598 0.5697 0.0799
METRIC (mm) 32.00
16.00 4.00
9.14
14.47
2.03
®
THE MULTI-MIX MICROTECHNOLOGY GROUP IS ISO 9001:2000 REGISTERED
U.S. Patent 6,099,677 and other Patents Pending.
Merrimac Industries / 41 Fairfield Place, West Caldwell, NJ 07006
Tel: 1.888.434.MMFM / Fax: 973.882.5990 / Email: [email protected] / www.merrimacind.com
Insertion Loss
-18
0.4
-18.5
0.3
-19
0.2
Insertion Loss(dB)
Coupling (dB)
Coupling
-19.5
-20
-20.5
0.1
0
-0.1
-0.2
-21
-0.3
-21.5
-22
960
980
1000
1020
1040
1060 1080 1100 1120
Frequency (MHz)
1140
1160
1180
1200
-0.4
960
1220
980
1000
1020
1040
1060
Port 2
1080
1100
1120
1140
1160
1180
1200
1220
Frequency (MHz)
VSWR
Port 1
Directivity
Port 3
Port 4
0
1.3
-5
1.25
Directivity (dB)
-10
1.2
VSWR
CSDZ-20H-1.1G
TYPICAL PERFORMANCE
1.15
-15
-20
-25
1.1
-30
1.05
-35
1
960
980
1000
1020
1040
1060 1080 1100 1120
Frequency (MHz)
1140
1160
1180
1200
-40
960
1220
980
1000
1020
1040
1060 1080 1100 1120
Frequency (MHz)
1140
1160
1180
1200
MOUNTING CONFIGURATION
50 OHM LINE
.032 DIELECTRIC THICKNESS
ER= 3.38
Ground plane of unit should
be soldered to ground plane
of circuit board for optimum
performance
0.447
[11.35]
0.034 typ. [0.86]
0.351
[8.91]
GROUND VIAS
PLATED THRU
0.050
[1.28]
0.250
[6.35]
0.0630
[1.60]
GROUND PLANE
0.068
[1.73]
TRUTH TABLE
1
2
3
4
1
Input
Output
Isolated
Coupled
2
Output
Input
Coupled
Isolated
3
Isolated
Coupled
Input
Output
4
Coupled
Isolated
Output
Input
Merrimac Industries / 41 Fairfield Place, West Caldwell, NJ 07006
Tel: 1.888.434.MMFM / Fax: 973.882.5990 / Email: [email protected] / www.merrimacind.com
1220
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