CSD-5H-1.85G DIRECTIONAL COUPLER PRELIMINARY REV: 001, 12/01/04 TECHNICAL DESCRIPTION FEATURES • 1.5 - 2.2 GHz • LOW LOSS • HIGH DIRECTIVITY • EXCELLENT COUPLING ACCURACY • SURFACE MOUNT • TAPE & REEL AVAILABLE APPLICATIONS • DCS 1800 BASE STATION RF SUBSYSTEMS • PCS 1900 BASE STATION RF SUBSYSTEMS • MILITARY COMMUNICATIONS • TELEMETRY The Multi-Mix® CSD series provides a 5 dB coupling with low insertion loss, low VSWR, and high directivity. Accurate coupling factors make this series ideal for use in power amplifiers and RF signal distribution and processing equipment. CSD-5 directional couplers are fusion bonded multilayer stripline devices. The fusion bonding process yields a homogeneous monolithic dielectric structure with reliability, ruggedness, and electrical performance that is superior to conventional adhesive bonding techniques. GENERAL SPECIFICATIONS FREQUENCY RANGE (GHz) INSERTION LOSS (dB MAX) MEAN COUPLING (dB) VSWR (MAX, ALL PORTS) 1.7 - 2.0 1.5 - 2.2 0.22 0.25 5.0 ± 0.4 5.0 ± 0.5 1.20:1 1.25:1 FREQUENCY SENSITIVITY (dB MAX) DIRECTIVITY ( dB MIN) INPUT POWER (CW @ 1.2:1 LOAD VSWR) RF INTERFACE OPERATING TEMPERATURE ± 0.15 ±0.25 18 16 150 Leadless Surface Mount -55° TO +85° C PACKAGE OUTLINE / TAPE & REEL ORIENTATION .560 [14.22] PAD 1 DIRECTION OF FEED .050 [1.27] Po \U+2205 Do 2 1 F .350 [8.89] CSD-5H-1.85G 3 Bo P2 4 P1 .024 [0.61] W Ao E1 1 Ko .062 PLATED THRU 4 PLACES [1.57] .075 [1.91] W P1 E F Do Po P2 Ao Bo Ko ENGLISH 1.2598 0.6299 0.0689 0.5590 0.0591 0.1575 0.0787 0.3598 0.5697 0.0799 2.030 METRIC 32.000 16.000 1.750 14.199 1.500 4.000 2.000 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.Multi-Mix.com Coupling VSWR Port 1 -3.75 Port 2 Port 3 Port 4 1.50 -4.00 1.45 -4.25 1.40 -4.50 -4.75 1.30 VSWR Coupling (dB) 1.35 -5.00 -5.25 1.25 1.20 -5.50 1.15 -5.75 1.10 -6.00 1.05 -6.25 1.500 1.570 1.640 1.710 1.780 1.850 1.920 1.990 2.060 2.130 1.00 1.500 2.200 1.570 1.640 1.710 1.780 1.850 Frequency (GHz) 1.920 1.990 2.060 2.130 2.200 1.990 2.060 2.130 2.200 Frequency (GHz) Insertion Loss Directivity 0.50 0.00 0.40 -6.00 0.30 -12.00 0.20 -18.00 0.10 -24.00 Directivity (dB) Insertion Loss (dB) CSD-5H-1.85G TYPICAL PERFORMANCE 0.00 -0.10 -30.00 -36.00 -0.20 -42.00 -0.30 -48.00 -0.40 -54.00 -0.50 1.500 1.570 1.640 1.710 1.780 1.850 1.920 1.990 2.060 2.130 -60.00 1.500 2.200 1.570 1.640 1.710 1.780 Frequency (GHz) 1.850 1.920 Frequency (GHz) 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.Multi-Mix.com