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| CSD-20N-0.75G DIRECTIONAL COUPLER REV: 001, 03/29/07 TECHNICAL DESCRIPTION FEATURES * 0.5 - 1.0 GHz * LOW LOSS * HIGH DIRECTIVITY * EXCELLENT COUPLING ACCURACY * SURFACE MOUNT The Multi-Mix(R) CSD-20N-0.75G provides a 20 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-20 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 MHz 500 - 1000 INSERTION LOSS (dB MAX) 0.2 MEAN COUPLING VSWR (MAX, ALL PORTS) 1.22:1 20 1.0 FREQUENCY SNESITIVITY (dB MAX) DIRECTIVITY (dB MIN) POWER (AVG. CW WATTS) OPERATING TEMPERATURE -55 - +85 C 1.0 16 100 PACKAGE OUTLINE / TAPE AND REEL ORIENTATION DIRECTION OF FEED P 0 P PAD 1 1 K 0 PORT 2 .650 .402 PORT 1 "A" "A" B0 1 .480 .192 2 3 .061 W MARKED SIDE UP PORT 3 PORT 4 A0 SECTION "A"-"A" P P0 A0 B0 K0 1 ENGLISH (in) 0.9449 0.6299 0.1575 0.5126 0.6665 0.09448 METRIC (mm) 24.00 16.00 4.00 13.02 16.93 2.4 W 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: crm@merrimacind.com / www.merrimacind.com TYPICAL PERFORMANCE CSD-20N-0.75G Coupling -18 -18.5 Insertion Loss(dB) -19 Coupling (dB) -19.5 -20 -20.5 -21 -21.5 -22 500 1 0.75 0.5 0.25 0 -0.25 -0.5 -0.75 -1 500 Insertion Loss 550 600 650 700 750 800 850 900 950 1000 550 600 650 700 750 800 850 900 950 1000 Frequency (MHz) Frequency (MHz) VSWR Port 1 1.4 1.35 1.3 1.25 VSWR 1.2 1.15 1.1 1.05 1 500 Directivity (dB) Directivity Port 3 Port 4 0 -5 -10 -15 -20 -25 -30 -35 -40 500 Port 2 550 600 650 700 750 800 Frequency (MHz) 850 900 950 1000 550 600 650 700 750 800 850 900 950 1000 Frequency (MHz) MOUNTING CONFIGURATION 50 ohm line .030 delectric thickness ER= .537 .034 .453 .380 .063 .050 .068 Ground plane of unit should be soldered to ground plane of circuit board for optimum performance Ground plane 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 |
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