QHDZ-2BH-0.33G
QUAD HYBRID
REV: 004, 09/21/06
TECHNICAL DESCRIPTION
FEATURES
• 225 - 400 MHz
• LOW LOSS
• HIGH ISOLATION
• EXCELLENT PHASE/AMPLITUDE BALANCE
• HIGH POWER HANDLING
• SURFACE MOUNT
APPLICATIONS
• BASE STATION POWER
AMPLIFIERS
The QHDZ-2BH-0.33G series is a member of the Multi-Mix QHDZ family of 3-dB 90° couplers for use in
the 225-400 MHz range. The QHDZ-2BH-0.33G exhibits low insertion loss, low VSWR, and high isola-
tion. 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 multi-
couplers and RF signal distribution and processing equipment in general.
The construction of QHDZ 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
FREQUENCY RANGE
(MHz)
225 - 400
VSWR
(MAX, ALL
PORTS)
1.20:1
INSERTION LOSS
(dB MAX)
0.20
AMPLITUDE BALANCE
(dB MAX)
± 0.4
PHASE BALANCE
90 ± 3°
ISOLATION
(dB MIN)
20
AVERAGE POWER
(WATTS, MAX.)
RF
INTERFACE
OPERATING TEMPERATURE
-55° - +95° C
125
Leadless Surface Mount
PACKAGE OUTLINE / TAPE & REEL ORIENTATION
DIRECTION OF FEED
0.070
P
0
P
PAD 1
K
1
0
1.000
0.080 TYP.
PORT 2
0.080 TYP.
PORT 1
"A"
W
"A"
B
0
0.500
QHDZ-2BH-0.33G
0.050 TYP.
MARKED SIDE UP
PORT 3
0.050 TYP.
PORT 4
A
0
SECTION "A"-"A"
W
ENGLISH (in)
1.732
P
1
0.63
P0
A0
0.157 0.512
13.00
B0
1.012
25.70
K0
0.144
3.67
METRIC (mm) 44.00
16.00 4.00
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: crm@merrimacind.com / www.merrimacind.com
MERRIMAC [ MERRIMAC INDUSTRIES, INC. ]
