Surface Mount 10 W
High Power Amplifier

ReliaSat

17-20.5 GHz

Product Datasheet

K-HPA10W-1721-SM

Surface Mount 10 W GaN MMIC High Power
Amplifier for K-band.

Overview

K-HPA10W-1721-SM is a High Power MMIC
Amplifier fabricated on Space Qualified
0.25 um GaN on SiC. This MMIC operates from
17-20.5 GHz and delivers >10 W saturated output
power across the band, with power-added
efficiency in excess of 25% and large-signal gain of20 dB.
The part is offered in a 7x7 mm hermeticallysealed surface mount ceramic package and ismatched to 50 Ω with integrated DC blocking
capacitors on RF ports. The part incorporates
an output power detector to assist with system
integration and is well suited for satellite
communications and point to point applications.

••••
•
•
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•

Features

Frequency range 17-20.5 GHz
Power >10 W saturated
Small signal gain 25 dB
Large signal gain 20 dB
Integrated power detector
PAE: >25% at Pin=20 dBm
Bias: VD=25 V, IDQ=300 mA, VG3.6 V
QFN dimensions 7x7 mm

Applications

Functional Diagram••••

Satellite communications
RadarMobile communications
5G
Available asK-HPA10W-1721-SM

Issue Date: 20/04//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 8

Page 1 of 13

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 useof the information herein. All specifications are subject to change without notice.

Surface Mount 10 W
High Power Amplifier

ReliaSat

17-20.5 GHz

Product Datasheet

Electrical Specification

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

Test Conditions

Min

Operational Frequency Range

Typ

17.0High

Unit

20.5(GHz)

Input Return Loss

17-19 GHz
19-20.5 GHz
17.5-20.5 GHz252210

Output Return Loss

17.5-20.5 GHz

10(dB)

17.5-19.5 GHz
19.5-20.5 GHz
Pin=20 dBm
17.5-19 GHz
19-20 GHz
20.5 GHz4240(dBm)

332520(%)

0.03(dB/oC)

Small Signal Gain

Output Power at Saturation

Power Added Efficiency

Output Power Temperature Coefficient

19 GHz, Psat
-40 to 85 oC

(dB)
(dB)

Absolute Maximum Ratings
Parameter

RatingDrain Voltage (Vd)30 V

Gate Voltage Range (Vg)

-8 to 0 V

Drain Current (Id)

2.5 A

Power Dissipation (PDISS) 85 OC

44 W

Input Power (Pin)

23 dBmMounting Temperature (30 seconds)

260 OC

Storage Temperature-55 to 150 OC

Junction Temperature

200 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-SM

ParameterRating

Drain Voltage (Vd)20-30 V

Gate Voltage Range (Vg)

-3.6 (TYP)

Drain Current, Quiesent (Idq)

300 mA

Junction Temperature<200 OC

Issue Date: 20/04//2023

DOC REV 8Page 2 of 13

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 useof the information herein. All specifications are subject to change without notice.

Surface Mount 10 W
High Power Amplifier
17-20.5 GHz

ReliaSat
Product Datasheet

Thermal Reliability Information
Parameter

Test Conditions

ValueUnits

Thermal Resistance (θjc)(1)

Tbase= 85 oC, Vd=25 V, Id=0-1.5 A

2.62oC/W

Notes:

Thermal resistance measured using Raman Thermography on device channel referenced to back ofpackage.

Median Time To Failure vsChannel Temperature

Channel Temperature vs Pout

0.25 um GaN process

Power Consumption

DC power consumption vs output powerK-HPA10W-1721-SM

Issue Date: 20/04//2023

DOC REV 8Page 3 of 13

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 useof the information herein. All specifications are subject to change without notice.

Surface Mount 10 W
High Power Amplifier
17-20.5 GHz

ReliaSat
Product Datasheet

Small Signal Performance Curves
VD=25 V, IDQ=300 mA, VG~-3.6 V typical, TA=25 OC

S-Parameters vs Frequency

Small Signal Gain vs Frequency vsDrain Voltage

Reverse Gain vs Frequency vsDrain Voltage

Input Return Loss vs Frequency vsDrain Voltage

Output Return Loss vsFrequency vs Drain Voltage

K-HPA10W-1721-SM

Issue Date: 20/04//2023

DOC REV 8Page 4 of 13

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 useof the information herein. All specifications are subject to change without notice.

Surface Mount 10 W
High Power Amplifier
17-20.5 GHz

ReliaSatProduct Datasheet

Large Signal Performance Curves

VD=25 V, IDQ=300 mA, VG~-3.6 V typical, TA=25 OC

Pout vs Pin vs Frequency

Gain vs Pin vs Frequency

PAE vs Pin vs Frequency

Drain Current vs Pin vs Frequency

Power Detect Voltage vs Pout

K-HPA10W-1721-SM

Issue Date: 20/04//2023

DOC REV 8Page 5 of 13

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 useof the information herein. All specifications are subject to change without notice.

Surface Mount 10 W
High Power Amplifier

ReliaSat

17-20.5 GHz

Product Datasheet

Large Signal Performance Curves
VD=25 V, IDQ=300 mA, VG~-3.6 V typical, TA=25 OC

Pout vs Frequency vs Pin

PAE vs Frequency vs Pin

Pout vs Frequency vs Bias

PAE vs Frequency vs Bias

Saturated Power vs Frequency vs Temperature

K-HPA10W-1721-SM

Issue Date: 20/04//2023

DOC REV 8

Page 6 of 13

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 useof the information herein. All specifications are subject to change without notice.

Surface Mount 10 W
High Power Amplifier
17-20.5 GHz

ReliaSat
Product Datasheet

Linearity Performance Curves
VD=25 V, IDQ=300 mA, VG~-3.6 V typical, TA=25 OC

AM/AM vs Frequency

AM/PM vs Frequency

Output IP3 vs Pout/Tone vsFrequency

Noise Power Ratio vs Average
Pout at 19 GHz

K-HPA10W-1721-SM

Issue Date: 20/04//2023

DOC REV 8Page 7 of 13

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 useof the information herein. All specifications are subject to change without notice.

Surface Mount 10 W
High Power Amplifier
17-20.5 GHz

ReliaSat
Product Datasheet

Recommended Application Circuit

K-HPA10W-1721-SM

Issue Date: 20/04//2023

DOC REV 8Page 8 of 13

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 useof the information herein. All specifications are subject to change without notice.

Surface Mount 10 W
High Power Amplifier
17-20.5 GHz

ReliaSat
Product Datasheet

Bill Of Materials
PartVale

Case Size

C1

4.7 uF

1608 (0603)

C2, C3, C4, C5. C6. C7, C8, C9 C10100 nF

1608 (0603)

R1

10 Ohm1005 (0402)

R2, R3, R4, R5

2.5k Ohm

1005 (0402)

BiasSequences
Bias Up Sequence

Bias Down Sequence

1. Set ID limit to 2.5 A, IG limit to 50 mA

1. Turn off RF supply

2. Apply -5 V to VG

2. Reduce VG to -5 V

3. Apply +25 V to VD; IDQ is ~0 mA

3. Set VD to 0 V

4. Adjust VG until IDQ = 300 mA (VG~ -3.6 V)

4. Turn off VD supply

5. Turn on RF supply

5. Turn off VG supply

Arrangement

D2 and D3 must be biased from both sides.
Drain side capacitors should be 35 V minimum rating.
Bypass capacitors should be placed as close to the packaged device as possible.

Detector Operation

K-HPA10W-1721-SM includes power detectors on both sides of the device tofacilitate integration into larger systems. The power detector requires an external
5V supply. For temperature compensation, the VDET and VREF outputs can beconnected to a voltage comparator circuit, the output from which can be fed into an
ADC or multimeter for the result.

K-HPA10W-1721-SM

Issue Date: 20/04//2023

DOC REV 8Page 9 of 13Information 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 useof the information herein. All specifications are subject to change without notice.

Surface Mount 10 W
High Power Amplifier

ReliaSat

17-20.5 GHz

Product Datasheet

Pin Descriptions

Pad Number

LabelDescription

1, 6, 8, 10, 12, 17, 19, 21, 23

GND

Ground

2, 16

VDET

Detector Diode Output Voltage

3, 15

V D3

Drain Voltage Stage 34, 14

V D2

Drain Voltage Stage 25

VG

Gate Voltage (all stages)

7, 11

NC

No Connect

9RFIN

RF Input, 50 Ω matched, DC Blocked

13V D1

Drain Voltage Stage 118, 22

VREF

Reference Diode Output Voltage

20

RFOUT

RF Output, 50 Ω matched, DC Blocked

K-HPA10W-1721-SM

Issue Date: 20/04//2023

DOC REV 8

Page 10 of 13

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 useof the information herein. All specifications are subject to change without notice.

Surface Mount 10 W
High Power Amplifier
17-20.5 GHz

K-HPA10W-1721-SM

Issue Date: 20/04//2023

ReliaSat
Product Datasheet

DOC REV 8

Page 11 of 13

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 useof the information herein. All specifications are subject to change without notice.

Surface Mount 10 W
High Power Amplifier

ReliaSat

17-20.5 GHz

Product Datasheet

General Notes On Assembly
1. Clean the board or module with alcohol and allow it to fully dry.
2. Apply solder paste to each pin and heat achieve re-flow, being careful not toexceed the thermal budget.
3. After completing the soldering process, allow the devices to cool naturally for atleast 3 minutes.
4. Avoid any mechanical stress or shock to the solder joints and devices duringcooling,
5. Clean the assembly with alcohol.

Solderability

Compatible with the latest version of J-STD-020, Lead-free solder, 260 OC

Handling Precautions

Parameter					ESD - Human Bodel Model (HBM)		

Rating
TBD

These electronic devices are sensitive toelectrostatic discharge (ESD) and can be damaged
by static electricity. Proper ESD control techniquesshould be used when handling these devices.

Application Notes

It is typical for GaN HPAs to exhibit a soft compression characteristic as can beseen on the AM/AM plot. This can have a detrimental impact on some modulation
schemes particularly where a high PAPR is used. Modern digital techniques suchas Digital Pre-Distortion (DPD) can be applied to an input signal to linearize theperformance and achieve significant improvements on the EVM. By applying DPD
to K-HPA10W-1721-SM it is possible to linearize the HPA. The subsequent graphs ofAM/AM and AM/PM show linear performance beyond 40dBm output power. The
measurement uses Direct DPD over a signal bandwidth of 400 MHz and 10 dB PAPR.

K-HPA10W-1721-SM

Issue Date: 20/04//2023

DOC REV 8Page 12 of 13

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 useof the information herein. All specifications are subject to change without notice.

Surface Mount 10 W
High Power Amplifier

ReliaSat

17-20.5 GHz

Product Datasheet

DPD Implementation Process Curves
VD=25 V, IDQ=300 mA, VG~-3.6 V typical, TA=25 OC

AM/AM vs Frequency

AM/PM vs Frequency

Frequency

181920GHz

Signal Bandwidth

400400400MHz

EVM

1.6

1.6

0.9%

Pin (avg)

5.2

8.8

8.8

dBm

Pout (avg)

33.6

32.4

31dBm

Pout (max)

42.1

42.0

40.6

dBm

Gain

28.4

23.6

22.2

dB

Crest Factor

101010dB

Contact Information
ReliaSat Offices
e: sales@reliasat.com
www.reliasat.com

K-HPA10W-1721-SM

Issue Date: 20/04//2023

DOC REV 8

Page 13 of 13

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 useof the information herein. All specifications are subject to change without notice.