QHDZ-2BH-0.33G QUAD HYBRID REV: 004, 09/21/06 TECHNICAL DESCRIPTION FEATURES • 225 - 400 MHz • LOW LOSS • HIGH ISOLATION • EXCELLENT PHASE/AMPLITUDE BALANCE • HIGH POWER HANDLING • SURFACE MOUNT APPLICATIONS • BASE STATION POWER AMPLIFIERS The QHDZ-2BH-0.33G series is a member of the Multi-Mix QHDZ family of 3-dB 90° couplers for use in the 225-400 MHz range. The QHDZ-2BH-0.33G 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 base station power amplifiers in particular and radio transceivers, receiver/antenna multicouplers and RF signal distribution and processing equipment in general. The construction of QHDZ quad hybrids is based on fusion bonded multiplayer 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 0.20 ± 0.4 90 ± 3° FREQUENCY RANGE (MHz) INSERTION LOSS (dB MAX) 225 - 400 ISOLATION (dB MIN) VSWR (MAX, ALL PORTS) AVERAGE POWER (WATTS, MAX.) RF INTERFACE 20 1.20:1 125 Leadless Surface Mount OPERATING TEMPERATURE -55° - +95° C PACKAGE OUTLINE / TAPE & REEL ORIENTATION DIRECTION OF FEED 0.070 PAD 1 P P0 K 1 0 1.000 0.080 TYP. PORT 2 PORT 1 "A" 0.080 TYP. "A" B0 W QHDZ-2BH-0.33G 0.500 MARKED SIDE UP 0.050 TYP. PORT 3 0.050 TYP. PORT 4 A0 SECTION "A"-"A" W ENGLISH (in) 1.732 METRIC (mm) 44.00 P1 0.63 P0 A0 0.157 0.512 16.00 4.00 13.00 B0 K0 1.012 0.144 25.70 3.67 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 Coupling Direct Isolation Coupled 0 -2.2 -5 -2.4 -10 -2.6 Isolation (dB) Coupling (dB) -2 -2.8 -3 -3.2 -3.4 -15 -20 -25 -30 -3.6 -35 -3.8 -40 -4 225 242.5 260 277.5 295 312.5 330 Frequency (MHz) 347.5 365 382.5 225 400 Port 2 Port 3 242.5 260 277.5 295 312.5 330 Frequency (MHz) 347.5 365 382.5 400 347.5 365 382.5 400 Phase Balance VSWR Port 1 -85 Port 4 -86 1.3 -87 Phase (degrees) 1.25 1.2 VSWR QHDZ-2BH-0.33G TYPICAL PERFORMANCE 1.15 1.1 -88 -89 -90 -91 -92 -93 1.05 1 225 -94 242.5 260 277.5 295 312.5 330 Frequency (MHz) 347.5 365 382.5 -95 225 400 242.5 260 277.5 295 312.5 330 Frequency (MHz) MOUNTING CONFIGURATION 50 OHM LINE .032 DIELECTRIC THICKNESS ER= 3.38 .845 .055 TYP. .505 .345 .080 Ground plane of unit should be soldered to ground plane of circuit board for optimum performance .074 .074 GROUND PLANE 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: [email protected] / www.merrimacind.com