weinschel 5305 spectrum drive, frederick, md 21703-7362 ! tel: 301-846-9222, 800-638-2048 ! fax: 301-846-9116 web: www.weinschel.com ! email: sales@weinschel.com corporation 196 models 1537ra, 1538ra, & 1540ra 0.5 to 4.0 ghz directional couplers sma female connectors this series of directional couplers feature high directivity and low swr and are conservatively rated to ensure the most reliable service and performance under severe envi- ronmental conditions. these designs are ideal for lab applications, internal leveling, ecm systems, communica- tion satelites, rf and microwave test equipment, and wireless applications. other features include: o selection of coupling factors: 6, 10, 20, & 30 db o female sma connectors: rugged 4 hole connector construction insures mechanical superiority o temperature range: -55c to +85c o octive and multi-octive models specifications maximum model frequency coupling frequency minimum maximum insertion loss maximum maximum outline number range (db)* flatness* directivity swr above coupling peak** average** (see below) (ghz) (db) (db) loss (db) power (kw) power (w) 1537ra-10 2.0-4.0 10+ 1.20 + 0.75 20 1.25 0.25 3 40 2 1537ra-20 2.0-4.0 20+ 1.20 + 0.75 20 1.25 0.25 3 40 2 1538ra-6 0.5-2.0 6+ 1.20 + 1.0 18 1.25 0.30 3 50 1 1538RA-10 0.5-2.0 10+ 1.25 + 1.00 20 1.25 0.25 3 50 1 1538ra-20 0.5-2.0 20+ 1.25 + 1.00 20 1.25 0.25 3 50 1 1538ra-30 0.5-2.0 30+ 1.25 + 1.00 18 1.25 0.25 3 50 1 1540ra-20 1.0-4.0 20+ 1.25 + 0.75 20 1.25 0.50 3 50 3 * coupling includes frequency flatness. coupling measurement is referenced to the input port. ** peak and average power handling capability only apply if the main line is terminated in a 1.25 maximum swr for 10 db models and 1.75 for 20 and 30 db models. physical dimensions note: all dimensions are given in mm (inches) and are maximum, unless otherwise specified. new 8/14/00
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