mini-circuits - specification for directional coupler - zmdc-20-1 directional coupler zmdc-20-1 frequency mhz coupling db mainline loss db directivity db vswr (:1) power input, w f l - f u nom. flatness l typ. max. m typ. max. u typ. max. l typ. min. m typ. min. u typ. min. typ. l max. mu max 25-400 21.00.75 0.5 0.20 0.25 0.30 0.35 0.35 0.50 25 20 35 25 25 20 1.25 3.0 5.0 l=low range(f l to 10f l ) m=mid range(10f l to f u /2) u=upper range(f u /2 to f u ) pin connections port input output coupled (forward) coupled (reverse) dd 3 2 1 - not used case gnd termination gnd - - - - case style - m21 (inch,mm ) weight: 40 grams. a b c d e f g h j 1.50 38.100 1.13 28.702 1.00 25.400 .50 12.700 .155 3.937 2.345 59.563 .138 3.505 .987 25.070 2.50 63.500 k l m n p q r s t .10 2.540 .31 7.874 .75 19.050 1.19 30.226 .66 16.764 .150 3.810 tolerance: .x .1 .xx .03 .xxx .015 inch. material and finish: case material: aluminum alloy. finish: blue anodized. mounting bracket finish: iridite or clear anodize. case material: aluminum alloy. finish: blue paint over iridite. mounting: mounting bracket available on request. for bracket mounted on connector end add suffix b to part number and $5.00 to unit cost. for bracket mounted on the rear, add suffix br to part number and add $1.50 to unit cost. marking: for port markings 1, 2, and 3 see specification data sheet. connectors: connectors: female sma only. male sma available on request, consult factory. notes: ? mainline loss includes theoretical power loss at coupled port. ? l = 25-50 mhz, m = 50-300 mhz, u = 300-400 mhz ? general quality control procedures and environmental specifications are given in mini-circuits guarantees quality. hi-rel, mil description are given in hi-rel and mil ? prices and specifications subjects to change without notice. freq (mhz) i. loss (db) in-out coupling (db) in-cpl directivity (db) return loss (db) in out cpl 25.00 0.14 20.90 39.03 38.82 46.83 46.62 50.00 0.18 20.91 38.76 38.41 43.91 43.34 100.00 0.22 20.98 36.87 37.98 38.48 37.78 118.75 0.23 21.05 35.93 37.56 36.95 36.63 200.00 0.24 21.03 31.74 35.84 32.57 32.64 212.51 0.27 21.04 31.42 35.51 32.18 32.20 254.17 0.27 21.06 30.87 34.98 30.91 31.28 316.68 0.27 21.07 29.28 33.88 29.06 30.42 389.60 0.31 21.07 28.01 32.78 27.58 30.10 400.00 0.32 21.07 27.86 32.68 27.39 30.03 http://www.minicircuits.com/cgi-bin/spec?cat=coupler&model=zmdc-20-1&pix=m21.gif&bv=4 (1 of 2) [7/19/2004 8:08:19 pm]
mini-circuits - specification for directional coupler - zmdc-20-1 back http://www.minicircuits.com/cgi-bin/spec?cat=coupler&model=zmdc-20-1&pix=m21.gif&bv=4 (2 of 2) [7/19/2004 8:08:19 pm]
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