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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 25C
Parameter Frequency Range (BW) Phase Shift Phase Deviation in BW Control Voltage (CV) Range Control Current Insertion Loss in BW I.L. Deviation in BW I.L. Variation VSWR in BW IM3 IP3 PIN = 8 dBm, 1900/1905 MHz, CV = 0 V Derived from IM3 33 CV = 12 V CV = 0 V CV = 0-12 V At FO, CV = 0-12 V FO = 1837.5 At FO, CV = 12 V CV = 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 A 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 RF1 = 1.900 GHz, RF2 = 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
C1 GND B1 A1 IN/OUT
C2
C3 B3 GND A3 IN/OUT RF IN/OUT Vcontrol CONTROL CURRENT
PS184
A2 GND
10 pF
Terminal No. A1 A2 A3 B1 B3 C1 C2 C3
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) A1
-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 +85C -40 to +85C
0.047 (1.20 mm) 0.079 (2.00 mm) 0.000 0.037 (1.00 mm)
C1 B1 A1
C2
C3 B3
0.024 (0.60 mm)
A2
A3
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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