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1P503S Datasheet(PDF) 4 Page - Anaren Microwave |
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1P503S Datasheet(HTML) 4 Page - Anaren Microwave |
4 / 5 page 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 couplers have pin orientations that are symmetrical. When a port is designated as the input, automatically the two output and isolated ports are defined. For example, if the input port for a device was selected to be Pin 1, Pin 2 is automatically the isolated port, Pin 4 is the 0 degree reference output port, and Pin 3 is the output port which “lags” behind the reference output port by 90 degrees. Similarly, if Pin 3 was to be selected as the input port, the adjacent port on the long side (Pin 4) is the isolated port, the adjacent port on the short side (Pin 2) is the 0 degree output port, and the opposite port (Pin 1) is the - 90 degree output port. Below is a table of all possible orientations. MOUNTING In order for Xinger surface mount couplers to work optimally, there must be 50Ω 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 proper electrical performance. If either of these two conditions are not satisfied, insertion loss, coupling, VSWR and isolation may not meet published specifications. Overall ground is improved if a dense population of plated through holes connect the top and bottom ground layers of the PCB. This minimizes ground inductance and improves ground continuity. All of the Xinger hybrid and directional couplers are constructed from ceramic filled PTFE composites, which possess excellent electrical and mechanical stability having X and Y thermal coefficient of expansion (CTE) of 17 ppm/ oC 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 with the circuit trace of the PCB and insuring the ground plane of neither the component nor the PCB is in contact with the RF signal. As long as the geometry of the unit fits onto the layout of the circuit trace on the PCB, and the conditions of the previous paragraph are followed, the coupler’s performance is ensured. An example of how the PCB footprint could look is shown below. In specific designs, the 50Ω lines need to be adjusted to the unique dielectric coefficients and thicknesses as well as varying pick 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 |
Similar Part No. - 1P503S_14 |
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Similar Description - 1P503S_14 |
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