ALPHA PS184-315 Datasheet
Alpha Industries, Inc. [978] 241-7000 • Fax [978] 241-7906 • Email sales@alphaind.com • www.alphaind.com 1
Specifications subject to change without notice. 1/02A
LGA Packaged Phase Shifter
for DCS Base Stations
Features
■ Designed for DCS 1837.5 ± 32.5 MHz Band
■ 100 Degree Phase Shift Range
■ 1.5 Degree Phase Deviation
■ 0.3 dB Insertion Loss Deviation
■ 0–12 V Control Voltage Range
■ Specified 33 dBm IP3
■ Small Footprint LGA Package
PS184-315
Description
The PS184-315 is a voltage controlled phase shifter
specifically designed for use in power amplifier distortion
compensation circuits centered at 1837.5 MHz in DCS
band base stations. Its characteristics are specified in a
70 MHz bandwidth. The PS184-315 employs a monolithic
quadrature hybrid and a pair of selected silicon varactor
diodes to achieve 100 degree phase shift and low insertion
loss.The PS184-315 is packaged in the small outline LGA
(Land Grid Array) surface mount package with the internal
elements affixed to an organic BT substrate.
Preliminary
Parameter Condition Min. Typ. Max. Unit
Frequency Range (BW) F
O =
1837.5 1805 1870 MHz
Phase Shift At FO, CV= 12 V 100 Deg.
Phase Deviation in BW CV= 0–12 V 1.5 2.0 Deg.
Control Voltage (CV) Range 0 12 V
Control Current CV= 12 V 1 µA
Insertion Loss in BW CV= 0 V 2.3 dB
I.L. Deviation in BW CV= 0–12 V 0.3 dB
I.L. Variation At FO, CV= 0–12 V 0.75 dB
VSWR in BW 1.8
IM3 PIN= 8 dBm, 1900/1905 MHz, CV= 0 V -50 dBc
IP3 Derived from IM3 33 dBm
Electrical Specifications at 25°C
2 Alpha Industries, Inc. [978] 241-7000 • Fax [978] 241-7906 • Email sales@alphaind.com • www.alphaind.com
Specifications subject to change without notice. 1/02A
LGA Packaged Phase Shifter for DCS Base Stations PS184-315
Insertion Loss vs.
Frequency and Control Voltage
Frequency (GHz)
Loss (dB)
-2.0
-1.9
-1.8
-1.7
-1.6
-1.5
-1.4
-1.3
-1.2
-1.1
-1.0
1.805 1.820 1.835 1.850 1.865 1.880
0 V
4 V
8 V
12 V
Input/Output Return Loss vs.
Frequency and Control Voltage
Frequency (GHz)
Return Loss (dB)
1.805 1.820 1.835 1.850 1.865 1.880
-60
-50
-40
-30
-20
-10
0
0 V
4 V
8 V
12 V
Insertion Loss Flatness vs. Control Voltage
042681012
Flatness (dB)
Control Voltage (V)
-0.5
-0.4
-0.3
-0.2
-0.1
0
0.1
0.2
0.3
0.4
0.5
Phase vs. Frequency and Control Voltage
Frequency (GHz)
Phase (Degrees)
1.805 1.820 1.835 1.850 1.865 1.880
0
20
40
60
80
100
120
0 V
4 V
8 V
12 V
Phase Flatness vs. Control Voltage
042681012
Flatness (dB)
Control Voltage (V)
-2.5
-2.0
-1.5
-1.0
-0.5
0
0.5
1.0
1.5
2.0
2.5
3rd Order Intermod vs. Control Voltage
RF
1
= 1.900 GHz, RF2 = 1.905 GHz @ 8 dBm
042681012
Intermod (dBm)
Control Voltage (V)
30
32
34
36
38
40
42
44
46
48
50
Typical Performance Data
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