QHD-2N-0.56G QUAD HYBRID REV: 003, 06/16/06- TECHNICAL DESCRIPTION FEATURES • 450 - 700 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 The QHD-2N-0.56G series is a member of the Multi-Mix QHD family of 3-dB 90° couplers for use in the 450 - 700 MHz range. The QHD-2N-0.56G 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 radios for Homeland Security. 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) ISOLATION (dB MIN) INSERTION LOSS (dB MAX) VSWR (MAX) AMPLITUDE BALANCE (dB MAX) 450 - 700 20 0.25 1.20:1 ±0.3 PHASE BALANCE (MAX) INPUT POWER (CW, MAX) SIZE (INCHES) WEIGHT (GRAMS/OZ.) RF INTERFACE OPERATING TEMPERATURE 90 ± 3° 125 W 0.65 x 0.48 x 0.108 2.10 / .074 Surface Mount -55° - +85° C PACKAGE OUTLINE 0.650 PORT 2 PORT 1 PORT 3 4X 0.108 0.480 QHD-2N-0.56G 0.050 TYP. 0.024 TYP. 0.050 TYP. PORT 4 52 0.0 R. 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 Isolation Direct Coupled 0 -2 -10 -2.2 Isolation (dB) Coupling (dB) -2.4 -2.6 -2.8 -3 -3.2 -20 -30 -40 -3.4 -50 -3.6 -3.8 -4 450 475 500 525 550 575 600 Frequency (MHz) 625 650 675 -60 450 700 475 500 525 550 575 600 Frequency (MHz) 625 650 675 700 625 650 675 700 Phase Balance VSWR -85 Port 1 1.3 Port 2 Port 3 Port 4 -86 -87 Phase (degrees) 1.25 1.2 1.15 1.1 -88 -89 -90 -91 -92 -93 1.05 -94 1 450 475 500 525 550 575 600 625 650 675 -95 450 700 475 500 525 550 575 600 Frequency (MHz) Frequency (MHz) MOUNTING CONFIGURATION GROUND PLANE OF UNIT SHOULD BE SOLDERED TO GROUND PLANE OF CIRCUIT BOARD FOR OPTIMUM PERFORMANCE. 0.537 [13.64] 0.050 [1.27] 0.068 [1.73] 50 OHM LINE .032 DIELECTRIC THICKNESS ER = 3.38 0.034 TYP. [0.86] GROUND PLANE S VIA H UND OUG GROD THR TE PLA 0.063 [1.60] 0.380 [9.65] VSWR QHD-2N-0.56G TYPICAL 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.merrimacind.com