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Directional Couplers
EIA Rigid Line - High Directivity These precision directional couplers are designed utilizing EIA rigid coaxial transmission line connectors in 7/8 and 1-5/8 line sizes on the mainline with a type N female secondary line output. They provide the ability to perform precision swept frequency measurements in the larger coaxial line sizes. These units offer high directivity and an accurate sample of forward or reflected power for use in variety of measurement applications. Specifications Frequency Range ...... See chart Coupling ...... 10 dB nominal Frequency Sensitivity ...... ±1.0 dB 1 Tracking (unit to unit when paired) ...... 0.3 dB Directivity ...... 40 dB minimum 2 Maximum VSWR ...... 1.10 primary, 1.15 secondary 3 Nominal Impedance ...... 50 ohm Power Handling ...... 30 watts 4 Connectors ...... Primary line (see chart) secondary line - type N female	2049M For optimum accuracy, Maury precision bullets (inner conductor connectors) noted in the chart are recommended for use with these couplers. Individual support stands are available, also as noted in the chart, for convenient bench mounting. Frequency Range (GHz) Model "A" Dimension 7/8 EIA 1-5/8 EIA 0.75 - 1.5 2049C 2149C 7.88 1.00 - 2.0 2049D 2149D 7.04 1.50 - 3.0 2049E 2149E 6.51 1.70 - 2.3 2049M 2149M Support Stand Bullet "B" Dimension 2149G 2149G --- 2002A 2102A 2.31 3.42
Dimensions 1See Figure A, for coupling curve; frequency sensitivity spec does not apply. 246 dB minimum, >50 dB typical for models 2049M and 2149M. 3 VSWR, maximum for models 2049E and M, 2149E and M is 1.15 primary, 1.20 secondary. 4Conservatively rated, consult us on higher power applications.
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