Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email sales@alphaind.com • www.alphaind.com 1
Specifications subject to change without notice. 3/99A
Two-Way 0° Power Splitter
Combiner 1.71–1.99 GHz
Features
■ Low Cost
■ Low Profile
■ Available in Small SOT-6 Lead Package
■ Tape & Reel
PD18-73
Description
The PD18-73 is a monolithic two-way in-phase hybrid
junction tuned for the 1.71–1.99 GHz band.It offers low
loss, high isolation, good input/output matching and
exceptional phase/amplitude balance.It is available in the
SOT-6 lead surface mount package.
Parameter Min. Typ. Max. Unit
Frequency 1.71 1.99 GHz
Insertion Loss Less 3 dB Split 0.4 0.6 dB
Isolation 18 23 dB
Input VSWR 1.3:1 1.5:1
Output VSWR 1.2:1 1.4:1
Amplitude Balance ±0.1 ±0.2 dB
Phase Balance ±1.0 ±3.0 Deg.
Electrical Specifications at 25°C
GND
Port 1
Port 2
GND
IN/SUM
GND
123
654
PD18
Pin Out
IN/SUM
Port 1
Port 2
Block Diagram
Two-Way 0° Power Splitter Combiner 1.71–1.99 GHz PD18-73
2 Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email sales@alphaind.com • www.alphaind.com
Specifications subject to change without notice. 3/99A
-4.0
-3.8
-3.6
-3.4
-3.2
-3.0
Insertion Loss (dB)
Insertion Loss vs. Frequency
Port 1
Port 2
1.70 1.75 1.80 1.85 1.90 1.95 2.00
Frequency (GHz)
-40
-30
-20
-10
0
Isolation (dB)
Isolation vs. Frequency
1.70 1.75 1.80 1.85 1.90 1.95 2.00
Frequency (GHz)
1.0
1.1
1.2
1.3
1.4
1.5
Output VSWR
Output VSWR vs. Frequency
Port 1
Port 2
1.70 1.75 1.80 1.85 1.90 1.95 2.00
Frequency (GHz)
-0.10
-0.05
0.00
0.05
0.10
Amp. Balance (dB)
Amp. Balance vs. Frequency
1.70 1.75 1.80 1.85 1.90 1.95 2.00
Frequency (GHz)
1.0
1.1
1.2
1.3
1.4
1.5
Input VSWR
Input VSWR vs. Frequency
1.70 1.75 1.80 1.85 1.90 1.95 2.00
Frequency (GHz)
-3.0
-2.0
-1.0
0.0
1.0
2.0
3.0
Phase Balance (Deg.)
Phase Balance vs. Frequency
1.70 1.75 1.80 1.85 1.90 1.95 2.00
Frequency (GHz)
Typical Performance Data
Two-Way 0° Power Splitter Combiner 1.71–1.99 GHz PD18-73
Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email sales@alphaind.com • www.alphaind.com 3
Specifications subject to change without notice. 3/99A
Characteristic Value
Input Power
1
+1.5 W CW
Input Power
2
+0.75 CW
Operating Temperature -40°C to +85°C
Storage Temperature -65°C to +150°C
Absolute Maximum Ratings
1.When used as a power divider with a 2.0:1 maximum VSWR on all ports.
2.When used as a power combiner with a 2.0:1 maximum VSWR on all ports.
Recommended Board Layout
0.020 DIA.
VIA 3 PLACES
PD18
,
,
,
,
0.075
0.015 TYP.
0.039 TYP.
0.018 TYP.
0.020
Material is 10 mil FR4
SOT-6
0.074
(1.90 mm REF.)
0.071 (1.80 mm)
0.052 (1.30 mm)
0.037 (0.95 mm) REF.
0.122 (3.10 mm)
0.106 (2.70 mm)
0.006
(0.15 mm)
0.000
(0.00 mm)
0.057 (1.45 mm)
0.035 (0.90 mm)
0.020 (0.51 mm)
0.014 (0.350 mm)
0.126 (3.20 mm)
0.087 (2.20 mm)
PIN 6
PIN 1
PIN 1
INDICATOR
0.022 (0.61 mm)
0.004 (0.10 mm)
0.014
(0.26 mm)
0.004
(0.10 mm)
0.012
(0.30 mm)
TYP.
5.0˚ ± 1˚
5.0˚ ± 1˚
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