frequency range ghz isolation (db min) insertion loss (db max) vswr (max) 1.7 - 1.8 1.8 - 2.0 18 0.25 1.28:1 amplitude balance (db max) phase balance (max) input power (cw, max) rf interface operating temperature 0.40 0.30 903 30 w surface mount -55 - +85 c ? 1.7 - 2.0 ghz ? low loss ? high isolation ? excellent phase/amplitude balance ? surface mount ? tape & reel available 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. quad hybrid qhd-2x-1.95g technical description rev: 004, 05/22/07 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: crm@merrimacind.com / www.merrimacind.com u.s. patent 6,099,677 and other patents pending. general specifications package outline / tape & reel orientation side view to p vi e w 0.020 0.200 0.058 ref. 0.250 port 4 port 1 port 2 port 3 0.04 qhd-2x-1.95g p p w k b 1 0 0 0 english (in) metric (mm) w 0.6299 16.00 p 0.3150 8.00 10 p 0.1575 4.00 0 a 0.213 5.41 0 b 0 k 6.88 1.65 0.2708 0.0649 direction of feed "a" "a" section "a"-"a" a 0 pad 1 marked side up
typical performance qhd-2x-1.95g merrimac industries / 41 fairfield place, west caldwell, nj 07006 tel: 1.888.434.mmfm / fax: 973.882.5990 / email: crm@merrimacind.com / www.merrimacind.com mounting configuration 0.200 [5.08] 0.100 [2.54] 0.063 [1.60] ground plane 50 ohm line .032 dielectric thickness er= 3.38 ground plane of unit should be soldered to ground plane of circuit board for optimum performance 0.180 [4.57] 0.034 typ. [0.86] 0.050 [1.27] 0.068 [1.73] ground vias plated thru vswr 1 1.1 1.2 1.3 1.4 1.5 1700 1725 1750 1775 1800 1825 1850 1875 1900 1925 1950 1975 2000 frequency (mhz) vswr port 1 port 2 port 3 port 4 coupling -4 -3.75 -3.5 -3.25 -3 -2.75 -2.5 -2.25 -2 1700 1725 1750 1775 1800 1825 1850 1875 1900 1925 1950 1975 2000 frequency (mhz) coupling (db) direct coupled phase balance -95 -94 -93 -92 -91 -90 -89 -88 -87 -86 -85 1700 1725 1750 1775 1800 1825 1850 1875 1900 1925 1950 1975 2000 frequency (mhz) phase (degrees) isolation -30 -25 -20 -15 -10 -5 0 1700 1725 1750 1775 1800 1825 1850 1875 1900 1925 1950 1975 2000 frequency (mhz) isolation (db) truth table truth table 12 34 1 input iso -90 0 2 iso input 0 -90 3 -90 0 input iso 4 0 -90 iso input
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