PSI-1628 20 GHz Low Noise
Microwave Amplifier
Product Description

The PSI-1628 microwave low noise amplifier module provides 28 dB of gain over an exceptionally wide bandwidth. Designedfor amplification in microwave photonic link transmitters and receivers, these modules provide high gain with low noise figure
over the frequency range of 45 MHz to 20 GHz. This high level of gain is achieved using GaAs pHEMT technology and offers
noise figure of better than 4 dB with +16 dBm of output power at 1 dB compression.
Offering high gain and excellent gain flatness over multiple octaves of bandwidth, the PSI-1628 amplifier is easily used in applications where multiple bands are transmitted over a single optical or radio span. When used in conjunction with PSI’s optical link products, users are able to optimally match system losses, noise figure or gain requirements with optical link parameters.
Included in the compact sized module are DC power protection circuitry and RF matching to 50 ohms at both input and output
SMA ports. This design allows for simple integration with microwave components and systems in either laboratory or field installation environments. The amplifier requires minimal DC power derived from +12 and —5 volt power supplies. The PSI-1628
microwave amplifier is contained in a housing measuring 1.5” x 1.75” x 0.75”.

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Applications
Radio over fiber• Cellular antenna farms
LMDS, MMDS
• Optical delay lines
Radio astronomy• Spectroscopy
Remote antenna distribution • Remote imaging
Phased array radar

PSI-1628 Microwave Amplifier Benefits

Photonic Systems,
Inc. (PSI) is a recognized expert in theFeature

Benefitdesign, analysis andExceptionally wide bandwidth:
45 MHz to 20 GHz

Flexibility for use in many
applications

High gain/ Low noise figure

Best system performance withfewest components

Designed for use withphotonic links

Simple integration with PSIPSI1601, 1604 or other systems

implementation ofPSI-1628 Photonic
Microwave Amplifier

high performance

RFIn

fiber optic systems.

SMA

RFOut
SMA

With decades ofcollective experience, the PSI teamPSI-1604 Amplified Microwave Photonic Link

offers comprehensive fiber optic engineering solutions toRF In
SMA

Amplified Transmitter
EML

OpticalOutput
FC/APCTX bias, temp, λ control

OpticalInput

Amplified Receiver
Detector

FC/APCRF OutSMA

RX control

government, military and commer-PSI-1601 Microwave Photonic Link

cial customers.
RF InTransmitter

OpticalOutputEML
SMA

FC/APCTX bias, temp, λ control

Preliminary specification– subject to change without notice

6/1/06

OpticalInput
FC/APC

ReceiverDetector
RX control

RF Out
SMA

Phone: 978-670-4990
Fax: 978-670-2510
www.photonicsinc.com

PSI-1628 20 GHz Low Noise
Microwave AmplifierElectrical and Microwave Specifications

Pass-band specifications
Parameter

Value– typicalFrequency range

0.045 - 6 GHz

6 - 8 GHz

8 - 12 GHz

12 - 20 GHzGain

28 dB

28 dB

26 dB

24 dB

Gain flatness± 1 dB± 0.3 dB

± 0.3 dB

± 0.5 dB

Noise figure

4 dB

2.5 dB

2.5 dB

4 dB

General RF and electrical specifications
Parameter

Value– typical

Output third order intercept (IP3)28 dBmOutput power for 1 dB compression (P1dB)

16 dBmInput return loss

22 dB

Input IP3-3 dBm

Output return loss

15 dB

RF port impedance (input and output)

50 ohms

DC power supply+12 V @ < 150 mA;-5 V @ < 20 mA

Operating temperature range

0 to +60 deg. C

Module dimensions

1.5” x 1.75” x 0.75”

RF connectors (input and output)

SMA

PSI-1628 Amplifier Typical gain (S21)35.0
Gain (dB)

30.0
25.0
20.0
15.0
10.0
0.045 2.04

4.04

6.03

8.03 10.02 12.02 14.01 16.01 18.00 20.00
Frequency (GHz)

PSI-1628 Amplifier
Typical Noise Figure

-5.0
-15.0
-25.0
-35.0
-45.0
0.045 2.04 4.04 6.03 8.03 10.02 12.02 14.01 16.01 18.00 20.00
Frequency (GHz)

8.00
7.00
6.00
5.00
4.00
3.00
2.00
1.00
0.00
0.3
0.6
0.91.2
1.5
1.8
2.1
2.4
2.7
3.0
3.0
3.8
4.6
5.4
6.2
7.0
7.7
8.5
9.3
10 .1
10 .9
11 .7
12 .5
13 .3
14 .1
14 .8
15 .6
16 .4
17 .2
18 .0

Noise Figure (dB)

Return Loss (dB)

PSI-1628 Amplifier
Typical input return loss (S11)Frequency (GHz)

Phone: 978-670-4990
Fax: 978-670-2510
www.photonicsinc.com
Preliminary specification– subject to change without notice

6/1/06