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 AMPLITUDE BALANCE (dB MAX) PHASE BALANCE 0.25 ± 0.25 90 ± 3° FREQUENCY RANGE (MHz) INSERTION LOSS (dB MAX) 130 - 174 ISOLATION (dB MIN) VSWR (MAX, ALL PORTS) AVERAGE POWER (WATTS, MAX.) RF INTERFACE 20 1.20:1 250 Leadless Surface Mount OPERATING TEMPERATURE -55° - +85° C PACKAGE OUTLINE 1.00±.02 [25.40±0.51] PORT 2 4X R.063 [R1.59] PORT 3 .080 [2.02] PORT 1 1.00±.02 [25.40±0.51] .070±.005 [1.91±0.13] QHD-2Q-0.15G .050 [1.27] PORT 4 THE MULTI-MIX MICROTECHNOLOGY® 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: [email protected] / www.merrimacind.com Isolation Coupling Direct Coupled 0 -2 -5 -2.2 -10 -2.4 Isolation (dB) Coupling (dB) -2.6 -2.8 -3 -3.2 -15 -20 -25 -3.4 -30 -3.6 -35 -3.8 -40 -4 130 130 134 138 142 146 150 154 158 162 166 170 134 138 142 146 174 VSWR Port 1 Port 2 150 154 158 162 166 170 174 158 162 166 170 174 Frequency (MHz) Frequency (MHz) Phase Balance Port 3 -85 Port 4 1.3 -86 -87 Phase (degrees) 1.25 1.2 1.15 1.1 -88 -89 -90 -91 -92 -93 1.05 -94 1 130 134 138 142 146 150 154 158 162 166 170 -95 130 174 134 138 142 146 Frequency (MHz) 150 154 Frequency (MHz) MOUNTING CONFIGURATION 50 OHM LINE .032 DIELECTRIC THICKNESS ER= 3.3 1.005 QHD-2Q-0.15G 402633-002 .055 .845 VSWR QHD-2Q-0.15G TYPICAL PERFORMANCE .080 GROUND PLANE OF UNIT SHOULD BE SOLDERED TO GROUND PLANE OF CIRCUIT BOARD FOR OPTIMUM PERFORMANCE GROUND PLANE .074 .074 TRUTH TABLE 1 2 3 4 1 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