available on tape and reel for pick and place manufacturing. usa/canada: toll free: europe : (315) 4328909 (800) 4116596 +44 2392232392 model x3dc19e2 s rev a b doherty combiner description the X3DC19E2S is a low profile, high performance do herty combiner in a new easy to use, manufacturing friendly surfac e mount package. the X3DC19E2S is designed particularly for doherty amplifier applications, where tightly controlled phase and am plitude imbalance as well as low insertion loss are required for maximum and low power condition. it can be used in high power applications up to 200 watts. parts have been subjected to rigorous qualification testing and they are manufactured using materials with coefficients of t hermal expansion (cte) compatible with common substrates such as fr4 , g10, rf35, ro4350 and polyimide. produced with 6 of 6 rohs com pliant tin immersion finish electrical specifications ** featur es: ? 1930 - 1990 mhz ? high power ? low amp imbalance ? very low loss ? production friendly ? tape and reel ? lead free frequency return loss [1] insertion loss [1] amplitude imbalance [1] phase imbalance [1] operating temp. mhz db min db max db max degrees oc 1930 C 1990 20 0.15 0.12 90 3.0 55 to +95 return loss [2] insertion loss [2] port extension [3] power [4] ? jc db min db max degrees avg. cw watts oc/watt 20 0.20 9 200 27 **specification based on performance of unit proper ly installed on anaren test board [1] at maximum power condition, doherty combiner fu nctions as an equalsplit power combiner. [2] at low power condition, doherty combiner functi ons as a 100 to 50 impedance transformer. [3] there are short 50 ohm lines associated with in put ports of 9 at 1960mhz. details in page 2. mechanical outline
usa/canada: toll free: europe: (315) 4328909 (800) 4116596 +44 2392232392 available on tape and reel for pick and place manufacturing. model X3DC19E2S rev a doherty amplifier configuration doherty combiner pin configuration the X3DC19E2S has an orientation marker to denote p in 1. once port one has been identified the other ports are known automatically. please see the chart below fo r clarification: pin 1 pin 2 pin 3 pin 4 combining port not used peak amp port main amp port there are inevitably short lines associating with i nput ports in some high frequency band parts. the l ength of the short line is specified as electrical length at cen ter frequency and noted as port extension in this d atasheet. the designer should take this length into the considera tion to optimize the offset line length. 90 pin 2 pin 4 50 pin 1 pin 3 50 35 50 90 90 main amp peak amp 50 35 90 rf input nc rf output 0 90 offset line port extension anaren doherty combiner 50
available on tape and reel for pick and place manufacturing. usa/canada: toll free: europe : (315) 4328909 (800) 4116596 +44 2392232392 model x3dc19e2 s rev a typical performance (-55c, 25c, 95c ): 1930 C 1 990 mhz 1930 1940 1950 1960 1970 1980 1990 50 40 30 20 10 0 frequency (mhz) r e t u rn l o s s (d b ) return loss for X3DC19E2S (maximum power condition) 55oc 25oc 95oc 1930 1940 1950 1960 1970 1980 1990 50 40 30 20 10 0 frequency (mhz) r e t u rn l o s s (d b ) return loss for X3DC19E2S (low power condition) 55oc 25oc 95oc 1930 1940 1950 1960 1970 1980 1990 0.14 0.12 0.1 0.08 0.06 0.04 0.02 0 frequency (mhz) i n s e rt io n l o s s (d b ) insertion loss for X3DC19E2S (maximum power conditi on) 55oc 25oc 95oc 1930 1940 1950 1960 1970 1980 1990 0.3 0.25 0.2 0.15 0.1 0.05 0 frequency (mhz) i n s e rt io n l o s s (d b ) insertion loss for X3DC19E2S (low power condition) 55oc 25oc 95oc
usa/canada: toll free: europe: (315) 4328909 (800) 4116596 +44 2392232392 available on tape and reel for pick and place manufacturing. model X3DC19E2S rev a typical performance (-55c, 25c, 95c & 125c): 1 930 C 1990 mhz 1930 1940 1950 1960 1970 1980 1990 94 92 90 88 86 frequency (mhz) p h a s e b a la n c e (d e g ) phase balance for X3DC19E2S 55oc 25oc 95oc 1930 1940 1950 1960 1970 1980 1990 0.2 0.15 0.1 0.05 0 0.05 0.1 0.15 0.2 frequency (mhz) a m p lit u d e b a la n c e (d e g ) amplitude balance for X3DC19E2S 55oc 25oc 95oc
available on tape and reel for pick and place manufacturing. usa/canada: toll free: europe : (315) 4328909 (800) 4116596 +44 2392232392 model x3dc19e2 s rev a definition of the specifications to guarantee the part performance in doherty archit ecture, the part is specified in doherty operation for maximum power condition and low power condition. the follow ing specification definition assumes the extra port extension is deembeded from the raw s parameter and the parts is measured with pin n connected to port n (where n=1 , 2, 3, 4). ? maximum power condition under the maximum power condition, the symmetrical doherty architecture requires main amplifier and pe ak amplifier to work at full capacity with the optimum termination (50 ). the two amplifiers should deliver rf power of e qual magnitude and 90 degree phase difference. doherty c ombiner functions as a coherent power combiner and supplies the 90 degree phase compensation. the following specifi cation is defined with 50 port impedance at three ports for this condition. parameter definition mathematical representation return loss the impedance match at the combining port to a 50 system. 20log 11 s insertion loss the combined power divided by the sum of input power under the perfect combining condition. 10log ( ) 2 14 2 13 s s + phase imbalance the phase difference between peakcombined path and maincombined path at c = 1960mhz. phase ( ) ) ( 14 c s C phase ( ) ) ( 13 c s amplitude imbalance the magnitude difference between peakcombined path and maincombined path. ( ) 2 s 20log s 20log 13 14 ? ? low power condition under low power condition, the doherty operation tu rns off peak amplifier and requires main amplifier to be terminated with double of the optimum impedance (100 ). with the peak port open, doherty combiner serve rs as an impedance transformer transforming 50 at combining port to 100 at main amplifier port. the following specificatio n is defined under the port impedance condition of port 1 (combi ning port) 50 , port 4 ( main amp port) 100 and port 3 (peak amp port) open . parameter definition mathematical representation return loss the impedance match of the 50 to100 ? transformer. 20log 11 s insertion loss the output power divided by input power. 20log 41 s
usa/canada: toll free: europe: (315) 4328909 (800) 4116596 +44 2392232392 available on tape and reel for pick and place manufacturing. model X3DC19E2S rev a packaging and ordering information parts are available in reel. packaging follows eia 4812. parts are oriented in tape and reel as shown below. minimum order quantities are 2000 per reel. ?.059 [?1.50] ?.059 [?1.50] .315 [8.00] .591 [15.00] .228 [5.80] .945 [24.00] .453 [11.50] .069 [1.75] .079 [2.00] .157 [4.00] .012 [0.30] .094 [2.40] xx xx
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