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| CBF-A Series 3-PORT DIRECTIONAL COUPLERS 5 to 2000 MHz / Multi-Octave / 10 & 20 dB Models / Hi-Reliability Hermetic Package / Flatpack PRINCIPAL SPECIFICATIONS Model Number CBF-10A-375 CBF-20A-375 Frequency Performance Range, Bandwidth, MHz MHz 5 - 750 5 - 750 5 - 750 5 - 750 10 - 400 100 - 2000 500 - 1000 100 - 2000 500 - 1000 Coupling dB, Nom. 10 1.0 20 1.0 20 1.0 11 1.0 11 1.0 20 1.0 20 1.0 Frequency Sensitivity, dB, Max. 0.5 0.75 0.5 0.5 0.5 0.5 0.5 Directivity, dB, Min. 20 18 20 18 20 18 20 *Insertion Loss, dB, Max. 1.3 1.0 0.6 1.5 1.2 1.5 1.2 VSWR, Max. 1.5:1 1.5:1 1.3:1 1.7:1 1.5:1 1.7:1 1.5:1 CBF-11A-1250 100 - 2000 CBF-20A-1250 100 - 2000 Coupling is Referenced to the Input * Insertion Loss excludes Coupling Loss A-Size Package Outline GENERAL SPECIFICATIONS Impedance: CW Input: Weight, nominal: Operating Temperature: 50 nom. 1 W max. 0.1 oz (2.8 g) -- 55 to +85C OPTIONS Coupling Values: 5 to 30 dB Higher Frequency: up to 2.5 GHz Close Tolerance Coupling: 0.5 dB General Notes: 1. Directional couplers are useful for monitoring incident and reflected power, signal sampling, control loops and BITE. 2. The CBF-A series consists of 3 port devices with one port internally terminated. They may be used back-to-back as dual directional couplers. The CRF-A series of bi-directional couplers provides direct access to both coupled ports. 3. Merrimac couplers may be ordered with specific coupling values up to 30 dB and over selected frequency bands up to 18 GHz in microwave packages. 4. These units comply with the applicable portions of MIL-C-15370 and can be supplied screened to comply with additional specifications you designate for military and aerospace applications requiring higher reliability. 09Apr96 NOTES: 1. Tolerance on 3 place decimals .010(.25) except as noted. 2. Dimensions in inches over millimeters. 3. Dimensions marked with * apply only at body. 4. All unmarked pins are case ground. For further information contact MERRIMAC / 41 Fairfield Pl., West Caldwell, NJ, 07006 / 973-575-1300 / FAX 973-575-0531 |
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