10W Solid State Power
Amplifier17-20.5 GHz

Product Datasheet

K-HPA10W-1721-SSPA

10 W GaN Solid State Power Amplifier for K-band
applications.

Overview

K-HPA10W-1721-SSPA is an integrated High Power
Amplifier module operating from 17-20.5 GHz,
delivering over 10 W of saturated power acrossthe band. The module is biased from a single 2528 V DC supply and activated through an enablesignal.

•••

Power and temperature detect functionality areincorporated to facilitate system integration andtelemetry. The module casing dimensions is 63 x60 x 25 mm (See page 6).

••••Features

Frequency range 17-20.5 GHz
Power >10 W saturated
Integrated temperature and power detector
Single 25-28 V DC supply
Enable pin
2.92 mm RF I/O connectors
Dimensions 63 x 60 x 25 mmApplications••••

Satellite communications
Radar
Mobile communications
5G

Available as

K-HPA10W-1721-SSPA

Issue Date: 30/03/2023

K-HPA10W-1721

17-20.5 GHz bare die GaN HPA

K-HPA10W-1721-EVAL

17-20.5 GHz bare die GaN HPA
evaluation board

K-HPA10W-1721-SM

17-20.5 GHz packaged GaN HPA

K-HPA10W-1721-SM-EVAL

17-20.5 GHz packaged GaN HPA
evaluation board

K-HPA10W-1721-SSPA

17-20.5 GHz GaN solid state power
amplifier

DOC REV 4

Page 1 of 6

Information furnished by ReliaSat is believed to be accurate. No responsibility is assumed by ReliaSat for its use, nor for any infringements on the rights of other parties that may
result for the use of the information herein. All specifications are subject to change without notice.

10W Solid State Power
Amplifier17-20.5 GHz

Product Datasheet

Electrical Specification

Freq 17-20.5 GHz, Ta=25 oC Vd=28 V, Idq=300 mA, Zo=50 ΩParameter

Test ConditionsOperational Frequency Range

Min

Typ17.0HighUnit

20.5(GHz)

Input VSWR

17-18.5
18.5-20.5
17.5-20.5 GHz

2421
1.9

Output VSWR

17.5-20.5 GHz

1.9-

Output Power at Saturation

17-19 GHz
19-20.5 GHz

41
39.5(dBm)

Small Signal Gain(dB)-

Absolute Maximum Ratings
Parameter

RatingVoltage

30 V

Current

2.5 A

Input Power (Pin)

25 dBmPower Dissipation (PDISS) (70 oC)

44 W

Baseplate Temperature

85 OC

Exceeding any one or combination of these limits may cause
permanent damage to this device. Sustained operation near thesesurvivability limits is not recommended.

Recommended Operating Conditions

K-HPA10W-1721-SSPA

Parameter

RatingVoltage

28 V

Baseplate Temperature< 70 OC

Issue Date: 30/03/2023

DOC REV 4

Page 2 of 6

Information furnished by ReliaSat is believed to be accurate. No responsibility is assumed by ReliaSat for its use, nor for any infringements on the rights of other parties that may
result for the use of the information herein. All specifications are subject to change without notice.

10W Solid State Power
Amplifier17-20.5 GHz

Product Datasheet

Peak Output Power vs Frequency

AM/AM vs Frequency

K-HPA10W-1721-SSPA

Issue Date: 30/03/2023

AM/PM vs Frequency

DOC REV 4

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Information furnished by ReliaSat is believed to be accurate. No responsibility is assumed by ReliaSat for its use, nor for any infringements on the rights of other parties that may
result for the use of the information herein. All specifications are subject to change without notice.

10W Solid State Power
Amplifier17-20.5 GHz

Product Datasheet

AM/AM vs Frequency
DPD Applied

AM/PM vs Frequency DPD
AppliedPower Detect Voltage vs Pout

K-HPA10W-1721-SSPA

Issue Date: 30/03/2023

DOC REV 4Page 4 of 6

Information furnished by ReliaSat is believed to be accurate. No responsibility is assumed by ReliaSat for its use, nor for any infringements on the rights of other parties that may
result for the use of the information herein. All specifications are subject to change without notice.

10W Solid State Power
Amplifier17-20.5 GHz

Product Datasheet

Temperature Detect Voltage
vs Temperature
Ensure the module is bolted down to an
adequate heat sink before operation. A
thermal interface material should be used
between the base of the module and theheat sink.
The on-board temperature sensor is locatedclose to the HPA, however there will be atemperature offset of approx. 45 °C to thebase of the part.

Dimensions

K-HPA10W-1721-SSPA

Issue Date: 30/03/2023

DOC REV 4

Page 5 of 6

Information furnished by ReliaSat is believed to be accurate. No responsibility is assumed by ReliaSat for its use, nor for any infringements on the rights of other parties that may
result for the use of the information herein. All specifications are subject to change without notice.

10W Solid State PowerAmplifier
17-20.5 GHzProduct Datasheet

Power Sequence

The K-HPA10W-1721-SSPA module is powered using a single supply voltage. It is
recommended to use a voltage in the range 25-28V depending on requirements.
(see K-HPA10W-1721-SM datasheet).
Gate voltages are generated internally, and correct bias sequencing is handledwithin the module.
Power Up Sequence

Power Down Sequence

1. Set EN (Enable) to +5 V

1. Switch OFF the RF signal

2. Apply DC Voltage to 28 V Pin. Verify thatis <50 mAcurrent

2. Set EN to +5 V

3. Set EN pin to 0 V. Verify that current is in the range
3. Switch OFF the DC Voltage to 28 V Pin
200 mA -300 mA
4. Apply RF signal

4. Set EN to 0 V

Connection Pins

28 V GND

EN Vt

VpPinConnection

1. 28 V

28 V DC power, maximum current 2.2 A

2. GND

Ground

3. EN

SSPA enable

4. Vt

SSPA temperature detect voltage

5. Vp

SSPA power detect voltage

ReliaSat European Offices
sales@reliasat.com
K-HPA10W-1721-SSPA

ReliaSat Space Officewww.reliasat.com

Issue Date: 30/03/2023

emilie.schmitz@reliasat.com
DOC REV 4Page 6 of 6

Information furnished by ReliaSat is believed to be accurate. No responsibility is assumed by ReliaSat for its use, nor for any infringements on the rights of other parties that may
result for the use of the information herein. All specifications are subject to change without notice.