frequency range (mhz) insertion loss (db max) amplitude balance (db max) phase balance 1930 - 1990 0.12 0.15 90 2 isolation (db min) vswr (max, all ports) average power (watts, max.) rf interface operating temperature 23 1.15:1 450 leadless surface mount -55 - +85 c quad hybrid fea tures applica tions ? 1.93 - 1.99 ghz ? dcs 1800 base station ? low loss rf subsystems ? high isolation ? pcs 1900 base station ? excellent phase/amplitude balance rf subsystems ? surface mount ? military communications ? telemetry 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 subsystems. 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. qhd-2bh-1.9g technical description rev: 002, 09/08/04 the multi-mix microtechnology ? group is iso 9001:2000 registered merrimac industries / 41 fairfield place, west caldwell, nj 07006 tel: 1.888.434.mmfm / fax: 973.882.5990 / email: mmfm@merrimacind.com / www.multi-mix.com u.s. patent 6,099,677 and other patents pending. general specifications package outline qhd-2bh-1.9g
typical performance qhd-2bh-1.9g merrimac industries / 41 fairfield place, west caldwell, nj 07006 tel: 1.888.434.mmfm / fax: 973.882.5990 / email: mmfm@merrimacind.com / www.multi-mix.com mounting configuration ground plane of unit should be soldered to ground plane of circuit board for optimum performance coupling -4 -3.8 -3.6 -3.4 -3.2 -3 -2.8 -2.6 -2.4 -2.2 -2 1700 1750 1800 1850 1900 1950 2000 2050 2100 frequency (mhz) coupling (db) direct coupled isolation -60 -50 -40 -30 -20 -10 0 1700 1750 1800 1850 1900 1950 2000 2050 2100 frequency (mhz) isolation (db) vswr 1 1.05 1.1 1.15 1.2 1.25 1.3 1700 1750 1800 1850 1900 1950 2000 2050 2100 frequency (mhz) vswr port 1 port 2 port 3 port 4 phase balance -95 -94 -93 -92 -91 -90 -89 -88 -87 -86 -85 1700 1750 1800 1850 1900 1950 2000 2050 2100 frequency (mhz) phase (degrees) 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
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