Preliminary
LGA Packaged Phase Shifter
for DCS Base Stations
PS184-315
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
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.
Electrical Specifications at 25°C
Parameter
Frequency Range (BW)
Phase Shift
Phase Deviation in BW
Control Voltage (C
V
) Range
Control Current
Insertion Loss in BW
I.L. Deviation in BW
I.L. Variation
VSWR in BW
IM3
IP3
P
IN
= 8 dBm, 1900/1905 MHz, C
V
= 0 V
Derived from IM3
33
C
V
= 12 V
C
V
= 0 V
C
V
= 0–12 V
At F
O
, C
V
= 0–12 V
F
O =
1837.5
At F
O
, C
V
= 12 V
C
V
= 0–12 V
0
Condition
Min.
1805
100
1.5
2.0
12
1
2.3
0.3
0.75
1.8
-50
dBc
dBm
Typ.
Max.
1870
Unit
MHz
Deg.
Deg.
V
µA
dB
dB
dB
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
1
LGA Packaged Phase Shifter for DCS Base Stations
PS184-315
Typical Performance Data
-1.0
-1.1
-1.2
-1.4
-1.5
-1.6
-1.7
-1.8
-1.9
-2.0
1.805
4V
8V
0V
12 V
-1.3
0.5
0.4
0.3
Flatness (dB)
0.2
0.1
0
-0.1
-0.2
-0.3
-0.4
-0.5
Loss (dB)
1.820
1.835
1.850
1.865
1.880
0
2
4
6
8
10
12
Frequency (GHz)
Control Voltage (V)
Insertion Loss vs.
Frequency and Control Voltage
0
-10
Insertion Loss Flatness vs. Control Voltage
120
12 V
100
4V
Return Loss (dB)
Phase (Degrees)
8V
12 V
0V
8V
80
60
40
20
0
1.805
4V
0V
1.820
1.835
1.850
1.865
1.880
-20
-30
-40
-50
-60
1.805
1.820
1.835
1.850
1.865
1.880
Frequency (GHz)
Frequency (GHz)
Input/Output Return Loss vs.
Frequency and Control Voltage
2.5
2.0
1.5
Phase vs. Frequency and Control Voltage
50
48
46
Flatness (dB)
1.0
0.5
0
-0.5
-1.0
-1.5
-2.0
-2.5
0
2
4
6
8
10
12
Intermod (dBm)
44
42
40
38
36
34
32
30
0
2
4
6
8
10
12
Control Voltage (V)
Control Voltage (V)
Phase Flatness vs. Control Voltage
3rd Order Intermod vs. Control Voltage
RF
1
= 1.900 GHz, RF
2
= 1.905 GHz @ 8 dBm
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
Pin Out (Bottom View)
Vcontrol
Vcontrol
GND
Connection Diagram
RF IN/OUT
Vcontrol
10 pF
C
1
GND B
1
A
1
IN/OUT
C
2
C
3
B
3
GND
A
3
IN/OUT
RF IN/OUT
Vcontrol
CONTROL
CURRENT
PS184
A
2
GND
10 pF
Terminal No.
A
1
A
2
A
3
B
1
B
3
C
1
C
2
C
3
Terminal Name
IN/OUT
GND
IN/OUT
GND
GND
Vcontrol
GND
0.000
0.027 (0.68 mm)
0.058 (1.48 mm)
0.081 (2.05 mm)
0.112 (2.85 mm)
0.135 (3.42 mm)
0.166 (4.22 mm)
0.193 (4.90 mm)
0.126
B
(3.20 mm)
1
0.193 (4.90 mm)
A
1
-315
0.091 (2.32 mm)
Vcontrol
0.079 (2 mm)
ENCAP
0.014 (0.36 mm)
SUBSTRATE
Absolute Maximum Ratings
Characteristic
RF Input Power
Control Voltage
Operating Temperature
Storage Temperature
Value
20 dBm
15 V
-40 to +85°C
-40 to +85°C
0.047 (1.20 mm)
0.079 (2.00 mm)
0.000
0.037 (1.00 mm)
C
1
B
1
A
1
C
2
C
3
B
3
0.024 (0.60 mm)
A
2
A
3
0.031
(0.775 mm) 0.054 (1.370 mm)
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
3
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