QHD-2N-2.1G QUAD HYBRID REV: 003, 06/19/06 TECHNICAL DESCRIPTION FEATURES • 1.8 - 2.5 GHz • LOW LOSS • HIGH ISOLATION • EXCELLENT PHASE/AMPLITUDE BALANCE • SURFACE MOUNT APPLICATIONS • WCDMA BASE STATION RF SUBSYSTEMS • SATCOM The Multi-Mix® QHD series provides a 3 dB 90° coupling with low insertion loss, low VSWR, and high isolation. Accurate phase and amplitude balance make this series ideal for use in IQ networks, power amplifiers, radio transceivers, receiver multicouplers and RF signal distribution and processing. QHD quad hybrids are fusion bonded multilayer stripline devices. The fusion bonding process yields a homogeneous monolithic dielectric structure with reliability, ruggedness, and electrical performance that is superior to conventional adhesive bonding techniques. GENERAL SPECIFICATIONS FREQUENCY RANGE MHz INSERTION LOSS (dB MAX) AMPLITUDE BALANCE (dB MAX) PHASE BALANCE (DEGREES) 1800 - 2500 0.16 ± 0.3 90 ± 3° RF INTERFACE OPERATING TEMPERATURE Surface Mount -55° C to +85° C ISOLATION (dB MIN) VSWR (MAX, ALL PORTS) INPUT POWER (CW @ 1.2:1 LOAD VSWR) 23 1.18:1 400 PACKAGE OUTLINE PORT 1 0.480 [12.19] PORT 2 0.650 [16.51] 0.143 [3.63] QHD-2N-2.1G .040 PORT 4 .05 [1.27] PORT 3 .024 [0.61] 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 -2 0 -5 -2.25 -10 Isolation (dB) Coupling (dB) -2.5 -2.75 -3 -3.25 -20 -25 -35 -3.75 -4 1800 -15 -30 -3.5 1870 1940 2010 2080 2150 2220 Frequency (MHz) 2290 2360 2430 -40 1800 2500 1870 1940 2010 2080 2150 2220 2290 2360 2430 2500 Frequency (MHz) Phase Balance VSWR -85 Port 1 1.3 Port 2 Port 3 Port 4 -86 -87 Phase (degrees) 1.25 1.2 VSWR QHD-2N-2.1G TYPICAL PERFORMANCE 1.15 1.1 -88 -89 -90 -91 -92 -93 1.05 -94 1 1800 1870 1940 2010 2080 2150 2220 2290 2360 2430 -95 1800 2500 1870 1940 Frequency (MHz) 2010 2080 2150 2220 Frequency (MHz) 2290 2360 2430 MOUNTING CONFIGURATION 50 ohm line .030 delectric thickness ER= .537 .034 .453 .380 .063 .050 .068 Ground plane of unit should be soldered to ground plane of circuit board for optimum performance 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 2500