page 1 of 3 feature advantages low insertion loss, 0.2 db typ. used primarily in high power transmission applications, the excellent through-path signal loss maximizes the power transmitted to the antenna. high power handling, up to 150w usable in many systems with high-power requirements such as antenna feeds, power amplifers, and others that require sampling a high power rf signal. excellent return loss, 25 db typ. (all ports) provides excellent matching for 50? systems. good coupling fatness (0.5 db typ at 800-2500 mhz) flat coupling values across the frequency range allows accurate signal sampling through the coupled port with minimal measurement error. dc current passing up to 2.5 a suitable for use in systems requiring dc voltage on the rf line, such as supplying bias to remote circuit via the antenna cable. key features BDCH-20-272 bi-directional coupler dc pass, high power case style: pq2098 the big deal ? high power handling, up to 150w ? low insertion loss, 0.2 db typ ? excellent return loss, 25 db typ (all ports) 50 ? 20db coupling 150w* 700 to 2700 mhz product overview mini-circuits BDCH-20-272 high-power bi-directional coupler provides high power handling up to 150w and insertion loss of 0.2 db typ. covering frequencies from 700 to 2700 mhz, it supports a wide variety of applications from military to various cellular base station applications and more. excellent return loss at all ports of 25 db typical provides superb matching over the full frequency range. the coupler is designed into an open printed laminate (0.5 x 1.0 x 0.051) with wrap-around terminations for good solderability and easy visual inspection. *see power derating on page 2 mini-circuits ? www.minicircuits.com p.o. box 350166, brooklyn, ny 11235-0003 (718) 934-4500 sales@minicircuits.com
page 2 of 3 BDCH-20-272 bi-directional coupler rev. a m164582 edr-11595 BDCH-20-272 rav 171204 dc pass, high power features ? low insertion loss, 0.2 db typ. ? excellent return loss, 25 db typ ? high power, up to 150w ? dc current pass through input to output applications ? vhf/uhf high power radio ? transmission signal monitoring ? antenna reflection monitoring ? wireless transmitters ? distributed antenna systems (das) demo board mcl p/n: tb-863-1 suggested pcb layout (pl-538) outline drawing pad connections** input 1 output 2 coupled forward 4 coupled reverse 3 ground 5 **model is bi-directional and all ports are interchangeable, see port function table. electrical specifcations @ +25c parameter condition (mhz) min. typ. max. units frequency range 700 2700 mhz insertion loss 1 700 - 2700 0.2 0.35 db coupling 700 - 2700 211 db coupling flatness 700 - 2700 1.0 db 800 - 2500 0.5 directivity 700 - 2700 15 21 db return loss (input) 700 - 2700 20.5 25 db return loss (output) 700 - 2700 20.5 25 db return loss (coupling) 700 - 2700 20.5 25 db input rf power @+85c, case 700 - 2700 150 w @+95c, case 700 - 2700 120 @+105c, case 700 - 2700 90 thermal resistance 700 - 2700 0.5 c/w case style: pq2098 50 ? 20db coupling 150w* 700 to 2700 mhz port function confgurations input output coupled forward coupled reverse 1 2 4 3 2 1 3 4 3 4 2 1 4 3 1 2 electrical schematic pcb land pattern metallization solder resist bottom side top side 1 2 4 3 1 2 4 3 5 ground plane base material: printed wiring laminate. termination finish: tin-lead plate. mcl h d typ k typ p n f typ j b a c k typ g typ index d typ e l typ m typ index outline dimensions ( ) inch mm j k l m n p wt. 1 .010 .060 .030 .015 .830 .510 grams 25.65 1.52 0.76 0.38 21.08 12.95 2.0 a b c d e f g h 1.000 0.500 .051 .055 .200 .013 .030 0.700 25.40 12.70 1.30 1.40 5.08 0.33 0.76 17.78 *derates to 120w at 95c and 90w@105c case temperature * *case temperature is defned as temperature on base plate. permanent damage may occur if any of these limits are exceeded. maximum ratings operating temperature, case** -55c to 105c storage temperature -55c to 105c dc current 2.5a rf power * 150w @+85c, case denotes copper land pattern free of soldermask 1. trace width is shown for rogers ro4003c with dielectric thickness. notes: 0.032".0015". copper: 1 oz. each side. for other materials trace width may need to be modified. 2. bottom side of the pcb is continuous ground plane. denotes pcb copper layout with smobc (solder mask over bare copper) 3. trace tuning in rf lines may be needed to achieve specified performance. package outline .071.002 line width 4 pl. (see below) .100 ref. t y p. 1.000 ref. .500 ref. ? .020 pth. typ. for ground .020 typ .110 typ trace tuning 4 pl. (see below) 1. does not include theoretical loss, nominal theoretical loss 0.03 db mini-circuits ? www.minicircuits.com p.o. box 350166, brooklyn, ny 11235-0003 (718) 934-4500 sales@minicircuits.com
page 3 of 3 BDCH-20-272 additional notes a. performance and quality attributes and conditions not expressly stated in this specifcation document are intended to be excluded and do not form a part of this specifcation document. b. electrical specifcations and performance data contained in this specifcation document are based on mini-circuits applicable established test performance criteria and measurement instructions. c. the parts covered by this specifcation document are subject to mini-circuits standard limited warranty and terms and conditions (collectively, standard terms); purchasers of this part are entitled to the rights and benefts contained therein. for a full statement of the standard terms and the exclusive rights and remedies thereunder, please visit mini-circuits website at www.minicircuits.com/mclstore/terms.jsp 15 18 21 24 27 30 500 1000 1500 2000 2500 3000 coupling (db) frequency (mhz) bdch - 20 - 272 coupling (db) in - cpl fwd out - cpl rev 700 2700 0 0 . 1 0 . 2 0 . 3 0 . 4 0 . 5 500 1000 1500 2000 2500 3000 insertion loss (db) frequency (mhz) bdch - 20 - 272 insertion loss (db) - 55 c + 25 c + 105 c 700 2700 10 14 18 22 26 30 500 1000 1500 2000 2500 3000 directivity (db) frequency (mhz) bdch - 20 - 272 directivity (db) in - cpl rev - 55 c out - cpl fwd - 55 c in - cpl rev+ 25 c out - cpl fwd+ 25 c in - cpl rev+ 105 c out - cpl fwd+ 105 c 700 2700 typical performance data * 10 20 30 40 50 60 500 1000 1500 2000 2500 3000 return loss (db) frequency (mhz) bdch - 20 - 272 return loss (db) in out cpl fwd cpl rev 700 2700 frequency insertion loss coupling directivity return loss (mhz) (db) (db) (db) (db) in - out in - out - in - cpl rev out - cpl fwd in out cpl cpl -55c +25c +105c cpl fwd cpl rev -55c +25c +105c -55c +25c +105c fwd rev 500.0 0.06 0.08 0.10 23.25 23.23 25.14 25.15 26.82 25.46 25.16 27.01 28.59 28.39 28.39 29.13 600.0 0.07 0.08 0.11 22.12 22.09 24.40 23.75 25.13 25.00 23.78 25.34 30.07 30.04 29.71 30.37 700.0 0.08 0.09 0.12 21.31 21.28 23.81 22.79 23.94 24.20 22.80 24.29 33.52 33.17 32.34 33.06 800.0 0.09 0.10 0.13 20.76 20.73 23.05 22.19 22.73 23.42 22.14 23.31 39.76 37.40 37.94 37.25 900.0 0.10 0.11 0.14 20.43 20.40 22.13 21.76 21.93 22.86 21.59 22.51 36.35 34.43 40.54 36.82 1000.0 0.11 0.12 0.15 20.27 20.24 21.46 21.67 21.25 22.19 21.35 21.87 30.46 29.38 33.28 32.01 1200.0 0.13 0.14 0.18 20.38 20.34 21.17 22.08 20.56 22.19 21.33 21.56 24.69 24.22 26.36 26.17 1300.0 0.14 0.15 0.20 20.56 20.51 21.43 22.60 20.47 22.66 21.63 21.62 23.57 23.23 24.93 25.00 1400.0 0.15 0.16 0.21 20.79 20.71 22.52 23.31 21.06 23.86 22.11 22.23 23.22 22.90 24.41 24.54 1600.0 0.15 0.17 0.23 21.14 21.01 23.67 23.69 21.92 25.05 22.41 23.13 24.68 24.42 25.71 25.80 1700.0 0.15 0.17 0.23 21.20 21.04 22.66 22.77 21.33 23.71 21.94 21.85 27.06 26.70 28.00 27.92 1800.0 0.15 0.17 0.24 21.16 20.98 21.38 21.49 20.50 22.49 20.94 20.91 31.20 30.50 32.38 31.94 2000.0 0.16 0.19 0.25 20.92 20.67 19.19 19.43 18.40 19.67 19.10 18.57 39.10 36.62 36.94 37.92 2100.0 0.18 0.20 0.26 20.79 20.52 18.65 18.75 17.72 19.17 18.50 17.83 30.68 30.43 29.83 30.65 2400.0 0.21 0.23 0.31 20.87 20.61 18.75 18.20 16.89 19.32 17.92 17.45 23.94 23.88 23.43 23.83 2500.0 0.22 0.24 0.32 21.17 20.93 19.29 18.32 17.14 19.76 17.95 17.74 23.64 23.67 23.10 23.41 2600.0 0.21 0.24 0.33 21.63 21.43 19.63 18.35 17.18 19.85 17.73 17.36 24.11 24.04 23.41 23.57 2700.0 0.21 0.24 0.32 22.31 22.15 19.54 18.29 17.01 20.34 17.49 17.49 25.20 25.07 24.35 24.37 2800.0 0.21 0.25 0.33 23.29 23.16 18.72 17.87 16.62 19.72 16.85 17.32 26.98 26.91 25.99 25.79 2900.0 0.22 0.25 0.34 24.63 24.53 18.21 16.72 14.99 18.71 15.49 15.29 29.61 29.60 28.37 27.85 3000.0 0.20 0.25 0.32 26.43 26.40 14.42 14.57 13.39 15.31 13.23 13.80 33.19 33.56 31.63 30.21 * data at +25c unless specifed otherwise. mini-circuits ? www.minicircuits.com p.o. box 350166, brooklyn, ny 11235-0003 (718) 934-4500 sales@minicircuits.com
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