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
90 Degree Hybrid 1.71–1.88 GHz
Features
■ Low Cost
■ Low Profile
■ Small SOIC-8 Package
■ Tape & Reel
HY17-12
Description
The HY17-12 is a 90 degree hybrid tuned for the
1.71–1.88 GHz band. The monolithic circuitry is 100%
passive and offers lo w loss, high isolation and e xceptional
phase/amplitude balance. It is available in the SOIC-8
leaded surface mount package.
1. Less 3 dB power split.
1234
RF IN
GND
ISOL.
GND
8765
GND
COUPLED
DIRECT
GND
HY17
DIRECT
COUPLED
IN
ISOLATED
Block Diagram
Parameter Min. Typ. Max. Unit
Frequency 1.71 1.88 GHz
Insertion Loss
1
.5 .6 dB
Isolation 19 20 dB
VSWR All Ports 1.2:1 1.3:1
Amplitude Balance +.5 +1.0 dB
Phase Balance +1.0 +2.0 Deg.
Electrical Specifications at 25°C
Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email sales@alphaind.com • www.alphaind.com 2
Specifications subject to change without notice. 3/99A
90 Degree Hybrid 1.71–1.88 GHz HY17-12
Path Losses vs. Frequency
Frequency (GHz)
1.70 1.73 1.76 1.79 1.82 1.85 1.88
Loss (dB)
-4.00
-3.80
-3.60
-3.40
-3.20
-3.00
Direct
Coupled
Amplitude Balance vs. Frequency
Frequency (GHz)
1.70 1.73 1.76 1.79 1.82 1.85 1.88
Balance (dB)
-1.00
1.00
0.75
0.50
0.25
0.00
-0.25
-0.50
-0.75
Input VSWR vs. Frequency
Frequency (GHz)
1.70 1.73 1.76 1.79 1.82 1.85 1.88
VSWR (:1)
1.00
1.05
1.10
1.15
1.20
1.25
1.30
Output VSWR vs. Frequency
Frequency (GHz)
1.70 1.73 1.76 1.79 1.82 1.85 1.88
VSWR (:1)
1.00
1.05
1.10
1.15
1.20
1.25
1.30
Coupled
Direct
Coupled – Direct Phase vs. Frequency
Frequency (GHz)
1.70 1.73 1.76 1.79 1.82 1.85 1.88
Phase (Deg.)
89.00
89.40
89.80
90.20
90.60
91.00
Isolation vs. Frequency
Frequency (GHz)
1.70 1.73 1.76 1.79 1.82 1.85 1.88
Isolation (dB)
-45.00
-36.00
-27.00
-18.00
-9.00
0.00