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QHT-3 Series
90 POWER DIVIDERS / COMBINERS
1 to 400 MHz / 30% Bandwidth Standard / Low Insertion Loss / High Isolation / TO-5 Package
1 2 3 4
Phasing Diagram - A 1 2 3 ref. -- 90 ref. Isol. -- 90 Isol. Isol. -- 90 ref.
4 Isol. -- 90 ref.
PRINCIPAL SPECIFICATIONS
Model Number QHT-3-60 QHT-3-***B Center Frequency, fo 60 MHz 1 to 400 MHz Usable Bandwidth, MHz 51 - 69 fo 15%
GENERAL SPECIFICATIONS
Coupling: Isolation: Insertion Loss: Phase Tolerance: Amplitude Balance: Impedance: VSWR: CW Input: Weight, nominal: Operating Temperature: -- 3 dB nom. 20 dB min. 0.5 dB max. 90 3 max. 0.5 dB max. 50 nom. 1.3:1 max. 1 Watt max. 0.1 oz. (2.8 g) -- 55 to +85C
For complete Model Number replace *** with desired Center Frequency, fo in MHz.
Package Outline
Typical QHT-3-30 Performance
NOTES: 1. Tolerance on 3 place decimals .010(.25) except as noted. 2. Dimensions in inches over millimeters.
General Notes: 1. The QHT-3 series of two-section hybrids covers 1 to 400 MHz using a special lumped element design to minimize size while maintaining high performance. The TO-5 package used is suitable for aerospace applications where inherent package reliability and hermeticity are essential. 2. These units comply with MIL-P-23971 and can be supplied screened for compliance with additional specifications for military and space applications requiring the highest reliability.
20Feb96
For further information contact MERRIMAC / 41 Fairfield Pl., West Caldwell, NJ, 07006 / 973-575-1300 / FAX 973-575-0531

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