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 GENERAL SPECIFICATIONS Model Number Center Frequency, fo Usable Bandwidth, MHz QHT-3-60 QHT-3-***B 60 MHz 1 to 400 MHz 51 - 69 fo ± 15% For complete Model Number replace *** with desired Center Frequency, fo in MHz. Package Outline 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 Ω nom. 1.3:1 max. 1 Watt max. 0.1 oz. (2.8 g) -- 55° to +85°C 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