QHD-2BH-0.45G QUAD HYBRID REV: 003, 12/16/04 TECHNICAL DESCRIPTION FEATURES • 380 - 520 MHz • LOW LOSS • HIGH ISOLATION • EXCELLENT PHASE/AMPLITUDE BALANCE • HIGH POWER HANDLING • SURFACE MOUNT APPLICATIONS • CDMA 450 BASE STATION POWER AMPLIFIERS • UHF LAND MOBILE RADIO BASE STATION POWER AMPLIFIERS • UHF RADAR (400-500 MHz) The QHD-2BH-0.45G series is a member of the Multi-Mix QHD family of 3-dB 90° couplers for use in the 380-520 MHz range. The QHD-2BH-0.45G 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 QHD 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 ± 0.20 90 ± 2° FREQUENCY RANGE (MHz) INSERTION LOSS (dB MAX) 380 - 520 ISOLATION (dB MIN) VSWR (MAX, ALL PORTS) AVERAGE POWER (WATTS, MAX.) RF INTERFACE 28 1.15:1 200 Leadless Surface Mount OPERATING TEMPERATURE -55° - +85° C PACKAGE OUTLINE QHD-2BH-0.45G 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.Multi-Mix.com Coupling Direct Isolation Coupled -20 -2.0 -23 -2.2 -26 -2.4 -2.6 Isolation (dB) Coupling (dB) -29 -2.8 -3.0 -3.2 -35 -38 -44 -3.6 -47 -3.8 -50 -4.0 380 -32 -41 -3.4 394 408 422 436 450 464 478 492 506 380 520 394 408 422 VSWR Port 1 450 464 478 492 506 520 478 492 506 520 Phase Balance Port 2 Port 3 Port 4 -85 1.30 -86 1.27 Phase Balance (deg) -87 1.24 1.21 1.18 1.15 1.12 1.09 -88 -89 -90 -91 -92 1.06 -93 1.03 -94 1.00 380 436 Frequency (MHz) Frequency (MHz) VSWR QHD-2BH-0.45G TYPICAL PERFORMANCE -95 394 408 422 436 450 464 478 492 506 520 380 394 408 Frequency (MHz) 422 436 450 464 Frequency (MHz) MOUNTING CONFIGURATION Ground plane of unit should be soldered to ground plane of circuit board for optimum performance 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.Multi-Mix.com