frequency range (ghz) insertion loss (db max) mean coupling (db) vswr (max, all ports) 2.4 - 2.8 2.0 - 3.0 0.15 0.20 5.0 0.25 5.0 0.5 1.15:1 frequency sensitivity (db max) directivity ( db min) average power (watts, max.) rf interface operating temperature 0.1 0.30 23 20 200 leadless surface mount -55 to +95 c directional coupler fea tures ? 2.0 - 3.0 ghz ? low loss ? high directivity ? excellent coupling accuracy ? surface mount the multi-mix ? csdz series provides 5 db coupling at 2.6 ghz. the csdz series features accurate cou- pling 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 feedfor- ward 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. csdz-5n-2.5g technical description rev: 002, 03/21/06 the multi-mix microtechnology ? group is iso 9001:2000 registered 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 u.s. patent 6,099,677 and other patents pending. general specifications package outline/ tape & reel orientation .070 [1.778] .650 [16.51] .480 [12.192] .059 [1.499] .040 [1.016] typ. typ. port 1 port 2 port 4 port 3 csdz-5n-2.5g p p w k b 1 0 0 0 english (in) w 0.9449 0.6299 p 10 p 0.1575 0 a 0.5126 b 0 0 k metric (mm) 24.00 16.00 4.00 13.02 16.93 2.4 0.6665 0.09448 direction of feed "a" "a" section "a"-"a" a 0 pad 1 marked side up
typical performance csdz-5n-2.5g 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 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 ground plane of unit should be soldered to ground plane of circuit board for optimum performance ground plane 50 ohm line .030 delectric thickness er= .380 .453 .063 .068 .050 .034 .537 mounting configuration coupling -7 -6.5 -6 -5.5 -5 -4.5 -4 -3.5 -3 2000 2100 2200 2300 2400 2500 2600 2700 2800 2900 3000 frequency (mhz) coupling (db) insertion loss -0.5 -0.4 -0.3 -0.2 -0.1 0 0.1 0.2 0.3 0.4 0.5 2000 2100 2200 2300 2400 2500 2600 2700 2800 2900 3000 frequency (mhz) insertion loss(db) vswr 1 1.05 1.1 1.15 1.2 1.25 1.3 2000 2100 2200 2300 2400 2500 2600 2700 2800 2900 3000 frequency (mhz) vswr port 1 port 2 port 3 port 4 directivity -40 -35 -30 -25 -20 -15 -10 -5 0 2000 2100 2200 2300 2400 2500 2600 2700 2800 2900 3000 frequency (mhz) directivity (db)
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