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| 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(R) 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) 1.7 - 2.0 1.5 - 2.2 FREQUENCY SENSITIVITY (dB MAX) 0.15 0.25 INSERTION LOSS (dB MAX) 0.22 0.25 DIRECTIVITY ( dB MIN) 18 16 MEAN COUPLING (dB) 5.0 0.4 5.0 0.5 INPUT POWER (CW @ 1.2:1 LOAD VSWR) RF INTERFACE Leadless Surface Mount VSWR (MAX, ALL PORTS) 1.20:1 1.25:1 OPERATING TEMPERATURE 150 -55 TO +85 C PACKAGE OUTLINE / TAPE & REEL ORIENTATION .560 [14.22] .050 [1.27] PAD 1 \U+2205 Do Po DIRECTION OF FEED 2 .350 [8.89] 1 F CSD-5H-1.85G 3 .024 [0.61] .062 PLATED THRU 4 PLACES [1.57] Bo W Ao E1 1 Ko 4 P1 P2 .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(R) 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: MMFM@merrimacind.com / www.Multi-Mix.com TYPICAL PERFORMANCE CSD-5H-1.85G Coupling -3.75 1.50 -4.00 1.45 -4.25 1.40 -4.50 1.35 Coupling (dB) -4.75 1.30 -5.00 VSWR 1.25 1.20 1.15 1.10 1.05 1.00 1.500 Port 1 VSWR Port 2 Port 3 Port 4 -5.25 -5.50 -5.75 -6.00 -6.25 1.500 1.570 1.640 1.710 1.780 1.850 Frequency (GHz) 1.920 1.990 2.060 2.130 2.200 1.570 1.640 1.710 1.780 1.850 Frequency (GHz) 1.920 1.990 2.060 2.130 2.200 Insertion Loss 0.50 0.00 Directivity 0.40 -6.00 0.30 0.20 Insertion Loss (dB) -12.00 -18.00 0.00 Directivity (dB) 1.570 1.640 1.710 1.780 1.850 Frequency (GHz) 1.920 1.990 2.060 2.130 2.200 0.10 -24.00 -30.00 -0.10 -36.00 -0.20 -0.30 -42.00 -48.00 -0.40 -54.00 -0.50 1.500 -60.00 1.500 1.570 1.640 1.710 1.780 1.850 Frequency (GHz) 1.920 1.990 2.060 2.130 2.200 MOUNTING CONFIGURATION Ground plane of unit should be soldered to ground plane of circuit board for optimum performance 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] 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: MMFM@merrimacind.com / www.Multi-Mix.com |
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