QHD-2N-0.45G
QUAD HYBRID
PRELIMINARY
REV: 009, 11/17/04
TECHNICAL DESCRIPTION
FEATURES
• 350 - 520 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 (400-500 MHz)
The QHD-2N-0.45G series is a member of the Multi-Mix QHD family of 3-dB 90° couplers for use in the
350-520 MHz range. The QHD-2N-0.45G 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 base station power amplifiers in particular and radio transceivers, receiver/antenna multicouplers
and RF signal distribution and processing equipment in general.
The construction of QHD 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)
350 - 380
380- 520
PHASE BALANCE
(MAX)
90 ± 3°
INPUT POWER
(CW, MAX)
125 W
ISOLATION
(dB MIN)
18
20
SIZE
(INCHES)
0.65 x 0.48 x 0.155
INSERTION LOSS
(dB MAX)
VSWR
(MAX)
1.25:1
1.20:1
RF
INTERFACE
Surface Mount
AMPLITUDE
BALANCE
(dB MAX)
±0.4
±0.3
OPERATING
TEMPERATURE
-55° - +85° C
0.3
WEIGHT
(GRAMS/OZ.)
2.10 / .074
PACKAGE OUTLINE
PORT 1
0.650
0.050 TYP.
PORT 2
0.050 TYP.
PORT 4
.
XR
0.0
52
0.024 TYP.
QHD-2N-0.45G
PORT 3
4
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: MMFM@merrimacind.com / www.Multi-Mix.com
0.480
0.155
MERRIMAC [ MERRIMAC INDUSTRIES, INC. ]
