CSDZ-5H-1.9G DIRECTIONAL COUPLER REV: 003, 01/16/07 TECHNICAL DESCRIPTION FEATURES • 1700 - 2000 MHz • LOW LOSS • HIGH DIRECTIVITY • EXCELLENT COUPLING ACCURACY • SURFACE MOUNT The Multi-Mix® CSDZ series provides 5 dB coupling at 1900 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) 1700 - 2000 0.15 4.9 ± 0.2 1.15:1 FREQUENCY SENSITIVITY (dB MAX) DIRECTIVITY ( dB MIN) AVERAGE POWER (WATTS, MAX.) RF INTERFACE OPERATING TEMPERATURE ± 0.05 25 200 Leadless Surface Mount -55° TO +95° C PACKAGE OUTLINE/ TAPE & REEL ORIENTATION DIRECTION OF FEED .560 [14.224] PORT 2 PAD 1 P P0 PORT 1 0 "A" .350 [8.890] CSDZ-5H-1.9G K 1 "A" B0 W .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 Coupling Insertion Loss -4.400 0.30 -4.500 Insertion Loss (dB) Coupling (dB) -4.600 -4.700 -4.800 -4.900 -5.000 -5.100 -5.200 0.15 0.00 -0.15 -5.300 -5.400 1700 1750 1800 1850 1900 1950 -0.30 1700 2000 1750 1800 Frequency (MHz) Port2 1900 1950 2000 Directivity Port3 Port4 0.000 1.25 -10.000 Directivity (dB) 1.3 1.2 1.15 1.1 -20.000 -30.000 -40.000 1.05 1 1700 1850 Frequency (MHz) VSWR Port1 VSWR CSDZ-5H-1.9G TYPICAL PERFORMANCE 1750 1800 1850 1900 1950 -50.000 1700 2000 1750 1800 1850 1900 1950 Frequency (MHz) Frequency (MHz) 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] GROUND VIAS PLATED THRU 0.050 [1.28] 0.250 [6.35] 0.351 [8.91] 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 2000