available on tape and reel for pick and place manufacturing. usa/canada: toll free: europe : (315) 432-8909 (800) 544-2414 +44 2392-232392 model 1P503S rev. b hybrid couplers 3 db, 90 description the 1P503S pico xinger is a low profile, miniature 3db hybrid coupler in an easy to use surface mount package designed for dcs and pcs applications. the 1P503S is designed for balanced amplifiers, variable phase shifters and attenuators, lnas, signal distri bution and is an ideal solution for the ever-increasing demands of the wir eless industry for smaller printed circuit boards and high performance. parts have been subjected to rigorous qualification testing and units are 100% t ested. they are manufactured using materials with x and y thermal e xpansion coefficients compatible with common substrates. electrical specifications** frequency isolation* insertion loss vswr ghz db min db max max:1 1.7 C 1.8 18 0.25 1.28 1.8 C 2.0 18 0.25 1.28 amplitude balance phase balance power ? jc operating temp. db max degrees ave. cw watts oc/watt oc 0.45 3 30 27.5 -55 to +85 features: ? 1.7 C 2.0 ghz. ? dcs and pcs ? low loss ? high isolation ? 90 o quadrature ? surface mountable ? tape and reel ? lead free ? 100% tested 0.30 3 30 27.5 -55 to +85 **specification based on performance of unit proper ly installed on microstrip printed circuit boards with 50 nominal impedance. * see anaren application note #aan-231 for informatio n on how to improve rf performance on your printed circu it board specifications subject to change without notice. outline drawing 1P503S mechanical outline dimensions are in inches [millimeters] .054 .005 [1.38 0.13 ] top view (near-side) bottom view (far-side) pin 1 pin 4 pin 3 pin 2 side view .250 .010 [6.35 0.25 ] .200 .010 [5.08 0.25 ] pin 1 pin 2 pin 4 pin 3 gnd denotes array number 4x .040 .008 sq [1.01 0.20 ] 4x .020 .004 [0.51 0.10 ] part is symmetric about all axis .170 .004 [4.32 0.10 ] .120 .004 [3.05 0.10 ] gnd tolerances are non-cumulative
usa/canada: toll free: europe: (315) 432-8909 (800) 544-2414 +44 2392-232392 available on tape and reel for pick and place manufacturing. model 1P503S rev. b power derating curves 1P503S power derating curve 0 5 10 15 20 25 30 35 40 45 50 0 50 100 150 200 mounting interface temperature ( o c) p ow er (w atts) 85 power derating: the power handling and corresponding power derating plots are a function of the thermal resistance, mounting surface temperature (base plate temperature), maximum conti nuous operating temperature of the coupler, and the therm al insertion loss. the thermal insertion loss is defi ned in the power handling section of the data sheet. as the mounting interface temperature approaches th e maximum continuous operating temperature, the power handling decreases to zero. if mounting temperature is greater than 85 c, xinger coupler will perform reliably as long as the input power is derated to the curve above.
available on tape and reel for pick and place manufacturing. usa/canada: toll free: europe : (315) 432-8909 (800) 544-2414 +44 2392-232392 model 1P503S rev. b typical performance: 1.6 ghz. to 2.1 ghz. amplitude balance 3db hybrids are a type of backward wave coupler. i n the design of these couplers, the even mode impedance w as chosen to critically couple or slightly over cou ple at mid band to maximize performance and bandwidth. the amplitude balance specification is defined as the difference (in db) of the signals at the coupled po rt output and the dc port output, when compared to the average output level. phase balance in theory, output ports of a backward wave hybrid c oupler remain in perfect phase quadrature independent of frequency. in practice, factors associated with th e manufacturing processes slightly degrade performanc e. the specification is typical two to three degrees m aximum although in practice, phase balance is statisticall y better than specified (<1 o ). vswr & isolation similar to phase balance, the vswr and isolation of a coupler are theoretically perfect; where the input and output ports are perfectly matched and no power is coupled to the isolated port. in practice, factors associated with the design and manufacturing processes limit vswr and isolation. the significan t limitations are associated with limitations of buil ding perfect 50 transitions at the input and output ports of the device. insertion loss coupler insertion loss is defined as the difference of the input power from the sum of the output power. in practice, loss is typically 0.20 db. specification limits are somewhat higher due to imperfect test condition s; as the couplers must be tested in fixtures, which negatively affect results. coupling 1P503S -3.8 -3.5 -3.2 -2.9 -2.6 1600 1700 1800 1900 2000 2100 frequency (mhz) coupling (db) return loss 1P503S -50 -40 -30 -20 -10 0 1600 1700 1800 1900 2000 2100 frequency (mhz) return loss (db) isolation 1P503S -50 -40 -30 -20 -10 1600 1700 1800 1900 2000 2100 frequency (mhz) isolation (db) phase balance 1P503S -93 -92 -91 -90 -89 -88 -87 1600 1700 1800 1900 2000 2100 frequency (mhz) phase balance (degrees)
usa/canada: toll free: europe: (315) 432-8909 (800) 544-2414 +44 2392-232392 available on tape and reel for pick and place manufacturing. model 1P503S rev. b pin configuration all of the standard surface mount 3db hybrid couple rs have pin orientations that are symmetrical. when a port is designated as the input, automatically the two o utput and isolated ports are defined. for example, if th e input port for a device was selected to be pin 1, pin 2 i s automatically the isolated port, pin 4 is the 0 deg ree reference output port, and pin 3 is the output port which lags behind the reference output port by 90 degre es. similarly, if pin 3 was to be selected as the input port, the adjacent port on the long side (pin 4) is the i solated port, the adjacent port on the short side (pin 2) i s the 0 degree output port, and the opposite port (pin 1) i s the - 90 degree output port. below is a table of all pos sible orientations. mounting in order for xinger surface mount couplers to work optimally, there must be 50 transmission lines leading to and from all of the rf ports. also, there must be a very good ground plane under the part to ensure pro per electrical performance. if either of these two con ditions are not satisfied, insertion loss, coupling, vswr a nd isolation may not meet published specifications. overall ground is improved if a dense population of plated through holes connect the top and bottom gro und layers of the pcb. this minimizes ground inductanc e and improves ground continuity. all of the xinger h ybrid and directional couplers are constructed from ceram ic filled ptfe composites, which possess excellent electrical and mechanical stability having x and y thermal coefficient of expansion (cte) of 17 ppm/ o c when a surface mount hybrid coupler is mounted to a printed circuit board, the primary concerns are; insuring the rf pads of the device are in contact w ith the circuit trace of the pcb and insuring the groun d plane of neither the component nor the pcb is in contact with the rf signal. as long as the geometr y of the unit fits onto the layout of the circuit tra ce on the pcb, and the conditions of the previous paragraph are followed, the couplers performance i s ensured. an example of how the pcb footprint could look is shown below. in specific designs, the 50 lines need to be adjusted to the unique dielectric coefficients and thicknesses as well as varying pic k and place equipment tolerances. suggested footprint 1P503S mounting footprint dimensions are in inches [millimeters] part is symmetric about all axis .174 [4.42] .124 [3.15] 4x 50 transmission line to ensure proper electrical and thermal performance there must be a ground plane with 100% solder conection underneath the part 4x .045 sq [1.14] 4x .024 [0.61] 4x .099 [2.51] 4x .024 [0.61] multiple plated thru holes to ground
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