55 3 orientation in tape the db0603n 3db 90 coupler is based on thin-film multilayer technology. the technology provides a miniature part with excellent high frequency performance and rugged construction for reliable automatic assembly. the rfap lga 3db 90 coupler will be offered in a variety of frequency bands compatible with various types of high frequency wireless systems. applications ? balanced amplifiers and signal distribution in wireless communications l t s w b a dimensions: millimeters (inches) bottom view l 1.600.10 (0.0630.004) w 0.840.10 (0.0330.004) t 0.600.10 (0.0240.004) a 0.250.05 (0.0100.002) b 0.200.05 (0.0080.002) s 0.050.05 (0.0020.002) thin-film directional couplers db0603n 3db 90 couplers general description rfap technology in 50 ohm out 1 out 2 l and g rid a rray advantages: ? inherent low profile ? self alignment during reflow ? excellent solderability ? low parasitics ? better heat dissipation features ? miniature 0603 size ? low i. loss ? high isolation ? surface mountable ? rohs compliant ? supplied on t&r recommended pad layout dimensions mm (inches) 1.75 (0.069) 0.50 (0.020) 0.40 (0.016) 1.10 (0.043) part number frequency port return loss isolation insertion loss ampltidue phase balance power mhz impedance [db] [db] [db] balance (relative to 90o) handing [db] deg watts min. max. typ. min. typ. min. typ. typ. max. typ. max. typ. max max. DB0603N2140ANTR 2040 2240 50 15 26 15 23 0.30 0.40 0.50 0.80 2 3 3 db0603n2400antr 2300 2500 50 12 17 15 23 0.25 0.35 0.30 0.80 2 3 3 db0603n3000antr 2850 3150 50 12 15 15 26 0.20 0.30 0.30 0.80 2 3 3 db0603n3500antr 3300 3700 50 12 15 15 26 0.20 0.30 0.30 0.80 2 3 3 electrical parameters
56 3 thin-film directional couplers db0603n 3db 90 couplers 2040mhz to 2240mhz DB0603N2140ANTR return loss - input -30 -28 -26 -24 -22 -20 2030 2060 2090 2120 2150 2180 2210 2240 frequency (mhz) db insertion loss -1.8 -1.2 -0.6 0 2030 2060 2090 2120 2150 2180 2210 2240 frequency (mhz) db amplitude balance -2 -1 0 1 2 2030 2060 2090 2120 2150 2180 2210 2240 frequency (mhz) db
57 3 thin-film directional couplers db0603n 3db 90 couplers thin-film directional couplers db0603n 3db 90 couplers 2040mhz to 2240mhz DB0603N2140ANTR phase balance -8 -4 0 4 8 2030 2060 2090 2120 2150 2180 2210 2240 frequency (mhz) db isolation -26 -24 -22 -20 -18 -16 2030 2060 2090 2120 2150 2180 2210 2240 frequency (mhz) db
58 3 thin-film directional couplers db0603n 3db 90 couplers 2200mhz to 2600mhz db0603n2400antr return loss - input -20 -18 -16 -14 -12 -10 2200 2300 2400 2500 2600 frequency (mhz) db insertion loss -1.8 -1.2 -0.6 0 2200 2300 2400 2500 2600 frequency (mhz) db amplitude balance -2 -1 0 1 2 2200 2300 2400 2500 2600 frequency (mhz) db
59 3 thin-film directional couplers db0603n 3db 90 couplers thin-film directional couplers db0603n 3db 90 couplers 2200mhz to 2600mhz db0603n2400antr phase balance -8 -4 0 4 8 2200 2300 2400 2500 2600 frequency (mhz) db isolation -30 -28 -26 -24 -22 -20 2200 2300 2400 2500 2600 frequency (mhz) db
60 3 thin-film directional couplers db0603n 3db 90 couplers 2850mhz to 3150mhz db0603n3000antr return loss - input -20 -18 -16 -14 -12 -10 2800 2900 3000 3100 3200 frequency (mhz) db insertion loss -1.8 -1.2 -0.6 0 2800 2900 3000 3100 3200 frequency (mhz) db amplitude balance -2 -1 0 1 2 2800 2900 3000 3100 3200 frequency (mhz) db
61 3 thin-film directional couplers db0603n 3db 90 couplers thin-film directional couplers db0603n 3db 90 couplers 2850mhz to 3150mhz db0603n3000antr phase balance -8 -4 0 4 8 2800 2900 3000 3100 3200 frequency (mhz) db isolation -30 -28 -26 -24 -22 -20 2800 2900 3000 3100 3200 frequency (mhz) db
62 3 thin-film directional couplers db0603n 3db 90 couplers 3200mhz to 3800mhz db0603n3500antr return loss - input -20 -18 -16 -14 -12 -10 3200 3300 3400 3500 3600 3700 3800 frequency (mhz) db insertion loss -1.8 -1.2 -0.6 0 3200 3300 3400 3500 3600 3700 3800 frequency (mhz) db amplitude balance -2 -1 0 1 2 3200 3300 3400 3500 3600 3700 3800 frequency (mhz) db
63 3 thin-film directional couplers db0603n 3db 90 couplers thin-film directional couplers db0603n 3db 90 couplers 3200mhz to 3800mhz db0603n3500antr phase balance -8 -4 0 4 8 3200 3300 3400 3500 3600 3700 3800 frequency (mhz) db isolation -30 -28 -26 -24 -22 -20 3200 3300 3400 3500 3600 3700 3800 frequency (mhz) db
76 3 thin-film directional couplers db0805 3db 90 test jigs general description these jigs are designed for testing the db0805 3db 90 couplers using a vector network analyzer. they consist of a dielectric substrate, having 50 microstrips as conducting lines and a bottom ground plane located at a distance of 0.254mm from the microstrips. the substrate used is neltec?s nh9338st0254c1bc. the connectors are sma type (female), ?johnson components inc.? product p/n: 142-0701-841. both a measurement jig and a calibration jig are provided. the calibration jig is designed for a full 2-port calibration, and consists of an open line, short line and through line. load calibration can be done by a 50 sma termination. when measuring a component, it can be either soldered or pressed using a non-metallic stick until all four ports touch the appropriate pads. set the vna to the relevant frequency band. connect the vna using a 10db attenuator on the jig terminal connected to port 2. follow the vna?s instruction manual and use the calibration jig to perform a full 2-port calibration in the required bandwidths. place the coupler on the measurement jig as follows: input (coupler) ? connector 1 (jig) output 1 (coupler) ? connector 3 (jig) 50 (coupler) ? connector 2 (jig) output 2 (coupler) ? connector 4 (jig) to measure r. loss and i. loss 1 connect: connector 1 (jig) ? port 1 (vna) connector 3 (jig) ? port 2 (vna) connector 2 (jig) ? 50 connector 4 (jig) ? 50 to measure r. loss and i. loss 2 connect: connector 1 (jig) ? port 1 (vna) connector 3 (jig) ? 50 connector 2 (jig) ? 50 connector 4 (jig) ? port 2 (vna) to measure isolation connect: connector 1 (jig) ? 50 connector 3 (jig) ? port 1 (vna) connector 2 (jig) ? 50 connector 4 (jig) ? port 2 (vna) measurement procedure measurement jig connector 1 connector 2 connector 4 connector 3 calibration jig short line to gnd load & through load & through connector johnson p/n 142-0701-841 open line
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