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)
450 - 700
PHASE BALANCE
(MAX)
90 ± 3°
INPUT POWER
(CW, MAX)
125 W
ISOLATION
(dB MIN)
20
SIZE
(INCHES)
0.65 x 0.48 x 0.108
INSERTION LOSS
(dB MAX)
0.25
WEIGHT
(GRAMS/OZ.)
2.10 / .074
VSWR
(MAX)
1.20:1
RF
INTERFACE
Surface Mount
AMPLITUDE
BALANCE
(dB MAX)
±0.3
OPERATING
TEMPERATURE
-55° - +85° C
PACKAGE OUTLINE
PORT 2
0.650
0.050 TYP.
PORT 1
0.050 TYP.
PORT 3
0.024 TYP.
PORT 4
4
.
XR
0.0
52
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
0.480
QHD-2N-0.56G
0.108
MERRIMAC [ MERRIMAC INDUSTRIES, INC. ]
