Model 1P520S Rev A Pico Xinger 20dB Directional Coupler Description The 1P520S Pico Xinger is a low profile, miniature 20dB directional coupler in an easy to use surface mount package designed for DCS and PCS applications. The 1P520S is for power and frequency detection as well as power injection. The 1P520S is an ideal solution for the ever-increasing demands of the wireless industry for smaller printed circuit boards and high performance. Parts have been subjected to rigorous qualification testing and units are 100% tested. They are manufactured using materials with x and y thermal expansion coefficients compatible with common substrates. ELECTRICAL SPECIFICATIONS** Mean Insertion Freq. Features: Frequency VSWR Coupling Loss Sensitivity 1.7 2.0 GHz GHz dB dB Max Max : 1 dB Max DCS and PCS Very Low Loss 1.7 2.0 20 0.75 0.25 1.22 0.2 High Directivity Surface Mountable Power QQQQJC Operating Directivity Handling Temp. Tape and Reel New Pico-Package dB Min Ave CW Watts C / Watt C 100% Tested Lead Free 20 25 35 -55 to +85 **Specification based on performance of unit properly installed on microstrip printed circuit boards with 50 W nominal impedance. Specifications subject to change without notice. Top View (Near-side) Side View Bottom View (Far-side) .007 .066 .010 .004 .250 0.18 4X .020 1.67 0.25 0.510.10 6.35 Pin 1 Pin 2 Pin 2 Pin 1 GND Orientation .010 .004 .200 .120 Marker Denotes .004 4X .034 SQ 0.25 0.10 5.08 3.05 Pin Location 0.10 0.86 GND Pin 4 Denotes Pin 3 Pin 3 .004 .170 Pin 4 Array Number 0.10 4.32 Dimensions are in Inches Millimeters 1P520S Mechanical Outline Tolerances are Non-Cumulative USA/Canada: (315) 432-8909 Available on Tape Toll Free: and Reel For Pick and (800) 544-2414 Place Manufacturing. +44 2392-232392 Europe: Mode l 1P520S Rev A Typical Performance: 1.4 GHz. 2.3 GHz. Coupling 1P520S Return Loss 1P520S -18 0 -10 -19 -20 -20 -30 -21 -40 -22 -50 1.4 1.5 1.6 1.7 1.8 1.9 2 2.1 2.2 2.3 1.4 1.5 1.6 1.7 1.8 1.9 2 2.1 2.2 2.3 Frequency (GHz) Frequency (GHz) Directivity 1P520S Transmission Loss 1P520S -10 0 -20 -0.1 -30 -0.2 -40 -0.3 -50 -0.4 1.4 1.5 1.6 1.7 1.8 1.9 2 2.1 2.2 2.3 1.4 1.5 1.6 1.7 1.8 1.9 2 2.1 2.2 2.3 Frequency (GHz) Frequency (GHz) COUPLING VSWR & DIRECTIVITY Choice of a coupling value in an application normally In directional couplers, directivity is specified in lieu of depends on the power level of the main (sampled) line. isolation. Directivity is a measure of how well the coupled For example, if the coupler is being used to monitor main power is isolated from reflections at the main line output line power, the coupling value is selected to provide port. For example, open or short-circuiting the output port sufficient power to the monitoring device and yet of a coupler with 20dB directivity would only affect the minimize system loss. Note that any coupler reduces coupled output power by 1% and only 0.1% for 30dB power flowing in the main line by the amount coupled off directivity. High directivity is especially important if the a 10dB coupler reduces main line power by 1 dB (10%) coupler is being used to measure the VSWR of a device where a 20dB coupler reduces it by only 0.044dB (1%). at its output port. In this application, accurate measurements of forward and reverse power are Anaren uses mean coupling and frequency sensitivity required. with the coupling specification. The mean coupling value is arrived at by periodically sampling the coupling value In theory, VSWR and directivity characteristics of a over the specified band and averaging the readings. coupler are perfect the input and output ports are Frequency sensitivity is the peak to peak variation in perfectly matched and no power is coupled to the isolated coupling over the specified band. port. In practice, factors associated with the design and manufacturing processes limit VSWR and directivity. The USA/Canada: (315) 432-8909 Available on Tape and Reel For Pick and Place Toll Free: (800) 544-2414 Manufacturing. Europe: +44 2392-232392 Directivity (dB) Coupling (dB) Transmission Loss (dB) Return Loss (dB)