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| QHD-2Q-0.15G QUAD HYBRID PRELIMINARY REV: 003, 07/06/05 TECHNICAL DESCRIPTION FEATURES * 130 - 174 MHz * LOW LOSS * HIGH ISOLATION * EXCELLENT PHASE/AMPLITUDE BALANCE * HIGH POWER HANDLING * SURFACE MOUNT APPLICATIONS * HOMELAND SECURITY The QHD-2Q-0.15G series is a member of the Multi-Mix QHD family of 3-dB 90 couplers for use in the 130 - 174 MHz range. The QHD-2Q-0.15G exhibits low insertion loss, low VSWR, and high isolation. Excellent phase and amplitude balance and high RF power handling capability make this series ideal for use in land mobile radio systems. The construction of QHD quad hybrids is based on fusion bonded multilayer stripline structures. The fusion bonding process yields homogeneous monolithic dielectric structures with reliability, ruggedness, and electrical and thermal performance that are superior to conventional adhesive bonding techniques. GENERAL SPECIFICATIONS FREQUENCY RANGE (MHz) 130 - 174 VSWR (MAX, ALL PORTS) 1.20:1 INSERTION LOSS (dB MAX) 0.25 AMPLITUDE BALANCE (dB MAX) 0.25 PHASE BALANCE 90 3 ISOLATION (dB MIN) 20 AVERAGE POWER (WATTS, MAX.) RF INTERFACE OPERATING TEMPERATURE -55 - +85 C 250 Leadless Surface Mount PACKAGE OUTLINE PORT 2 4X R.063 [R1.59] PORT 1 1.00.02 [25.400.51] .070.005 [1.910.13] 1.00.02 [25.400.51] QHD-2Q-0.15G PORT 3 .080 [2.02] .050 [1.27] PORT 4 THE MULTI-MIX MICROTECHNOLOGY(R) GROUP IS ISO 9001:2000 REGISTERED U.S. Patent 6,099,677 and other Patents Pending. Merrimac Industries / 41 Fairfield Place, West Caldwell, NJ 07006 Tel: 1.888.434.MMFM / Fax: 973.882.5990 / Email: crm@merrimacind.com / www.merrimacind.com TYPICAL PERFORMANCE QHD-2Q-0.15G Coupling Direct -2 -2.2 -2.4 Coupled Isolation 0 -5 -10 Isolation (dB) -15 -20 -25 -30 -35 -40 130 134 138 142 146 150 154 158 162 166 170 174 -2.6 Coupling (dB) -2.8 -3 -3.2 -3.4 -3.6 -3.8 -4 130 134 138 142 146 150 154 158 162 166 170 174 Frequency (MHz) Frequency (MHz) VSWR Port 1 1.3 1.25 1.2 VSWR 1.15 1.1 1.05 1 130 134 138 142 146 150 154 158 162 166 170 174 Frequency (MHz) Port 2 Port 3 Port 4 Phase Balance -85 -86 -87 Phase (degrees) -88 -89 -90 -91 -92 -93 -94 -95 130 134 138 142 146 150 154 158 162 166 170 174 Frequency (MHz) MOUNTING CONFIGURATION 50 OHM LINE .032 DIELECTRIC THICKNESS ER= 3.3 .055 1.005 .845 QHD-2Q-0.15G 402633-002 .080 GROUND PLANE OF UNIT SHOULD BE SOLDERED TO GROUND PLANE OF CIRCUIT BOARD FOR OPTIMUM PERFORMANCE .074 GROUND PLANE .074 TRUTH TABLE 1 1 2 3 4 Input Iso -90 0 2 Iso Input 0 -90 3 -90 0 Input Iso 4 0 -90 Iso Input Merrimac Industries / 41 Fairfield Place, West Caldwell, NJ 07006 Tel: 1.888.434.MMFM / Fax: 973.882.5990 / Email: crm @merrimacind.com / www.merrimacind.com |
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