CSDZ-10Q-.312G DIRECTIONAL COUPLER PRELIMINARY REV: 001, 01/17/06 TECHNICAL DESCRIPTION FEATURES • 225 - 400 MHz • LOW LOSS • HIGH DIRECTIVITY • EXCELLENT COUPLING ACCURACY • SURFACE MOUNT • Ni/Au Finish The Multi-Mix® CSDZ series provides 10 dB coupling from 225 - 400 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 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) 225 - 400 0.16 10 ± 0.5 1.15:1 FREQUENCY SENSITIVITY (dB MAX) DIRECTIVITY ( dB MIN) AVERAGE POWER (WATTS, MAX.) RF INTERFACE OPERATING TEMPERATURE ± 0.6 20 250 Leadless Surface Mount -55° TO +95° C PACKAGE OUTLINE 1.00±.02 [25.40±0.51] PORT 2 4X R.063 [R1.59] PORT 3 .080 [2.02] PORT 1 1.00±.02 [25.40±0.51] .070±.005 [1.91±0.13] CSDZ-10Q-.312G .050 [1.27] PORT 4 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 -8 1 -8.5 0.8 0.6 Insertion Loss(dB) Coupling (dB) -9 -9.5 -10 -10.5 -11 0.4 0.2 0 -0.2 -0.4 -0.6 -11.5 -12 225 -0.8 250 275 300 325 350 375 -1 225 400 250 275 300 325 Frequency (MHz) Frequency (MHz) Port 2 350 375 400 Directivity VSWR Port 1 Port 3 Isolation 0 Port 4 1.5 Isolation2 -5 -10 Directivity (dB) 1.4 1.3 1.2 -15 -20 -25 -30 -35 -40 1.1 -45 -50 225 1 225 250 275 300 325 Frequency (MHz) 350 375 400 250 275 300 325 Frequency (MHz) 350 375 MOUNTING CONFIGURATION 50 OHM LINE .032 DIELECTRIC THICKNESS ER= 3.3 1.005 CSDZ-10Q-.312G 402633-002 .055 .845 VSWR CSDZ-10Q-.312 TYPICAL PERFORMANCE .080 GROUND PLANE OF UNIT SHOULD BE SOLDERED TO GROUND PLANE OF CIRCUIT BOARD FOR OPTIMUM PERFORMANCE GROUND PLANE .074 .074 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 400