CSDZ-20H-1.1G

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) 960 - 1220 INSERTION LOSS (dB MAX) 0.25 MEAN COUPLING (dB) 20 ± 0.6 VSWR (MAX, ALL PORTS) 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 PORT 1 P 0 P PAD 1 1 K 0 "A" W "A" B0 .350 [8.890] CSDZ-20H-1.1G .040 [1.016] TYP. MARKED SIDE UP PORT 3 .059 [1.499] TYP. PORT 4 .060 [1.524] P P0 A0 B0 K0 1 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 W A0 SECTION "A"-"A" 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: crm@merrimacind.com / www.merrimacind.com TYPICAL PERFORMANCE CSDZ-20H-1.1G Coupling -18 -18.5 Insertion Loss(dB) -19 Coupling (dB) -19.5 -20 -20.5 -21 -21.5 -22 960 0.4 0.3 0.2 0.1 0 -0.1 -0.2 -0.3 -0.4 960 Insertion Loss 980 1000 1020 1040 1060 1080 1100 1120 Frequency (MHz) 1140 1160 1180 1200 1220 980 1000 1020 1040 1060 1080 1100 1120 1140 1160 1180 1200 1220 Frequency (MHz) VSWR Directivity Port 3 Port 4 0 -5 Port 1 1.3 1.25 1.2 VSWR 1.15 1.1 Port 2 -10 Directivity (dB) -15 -20 -25 -30 1.05 1 960 -35 -40 960 980 1000 1020 1040 1060 1080 1100 1120 Frequency (MHz) 1140 1160 1180 1200 1220 980 1000 1020 1040 1060 1080 1100 1120 Frequency (MHz) 1140 1160 1180 1200 1220 MOUNTING CONFIGURATION 50 OHM LINE .032 DIELECTRIC THICKNESS ER= 3.38 0.447 [11.35] 0.034 typ. [0.86] GROUND VIAS PLATED THRU 0.050 [1.28] Ground plane of unit should be soldered to ground plane of circuit board for optimum performance 0.351 [8.91] 0.250 [6.35] 0.0630 [1.60] GROUND PLANE 0.068 [1.73] TRUTH TABLE 1 1 2 3 4 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: crm@merrimacind.com / www.merrimacind.com