Ultraband Technologies GaN and GaAs RF, mmWave and Power Semiconductors

Emerges is an authorised Ultraband Technologies distributor in Singapore, supplying Ultraband's GaN and GaAs RF MMICs, Ku and Ka-band mmWave MMICs, GaN-on-SiC power HEMTs and Ku-band phased array SATCOM systems. From the AN5404 Wi-Fi LNA and URP5B95 1 W Ka-band PA to the 1200 V UPDC5G78B1 power HEMT and the Azhdarchidae LEO terminal, we support designers across 5G, satellite communications, radar, power conversion and UAV applications.
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Authorised Ultraband Technologies Distributor

Ultraband Technologies is a Taiwan-based fabless III-V compound semiconductor design house, founded in 2020 in Zhubei, Hsinchu. Its founding team traces its lineage to the team behind WIN Semiconductors, and the company designs across GaN-on-SiC HEMT, GaAs pHEMT and InP HEMT processes with a focus on high efficiency and high linearity.

Ultraband works end to end, from epitaxial structure and device layout optimisation through IC design and 3D MMIC packaging to antenna-in-module system integration. That breadth runs from compact DFN and QFN Wi-Fi parts to bare-die Ka-band MMICs for 5G FR2 and SATCOM, high-voltage GaN power devices, and complete 16 x 16 antenna-in-module phased array terminals.

Ultraband also accepts custom design requests for MMICs and modules. Talk to Emerges about your requirements and we will coordinate with Ultraband's engineering team.

Ultraband RF MMIC

Ultraband RF MMIC: Wi-Fi LNAs, SPDT switch and Wi-Fi front-end modules.

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Ultraband mmWave MMIC

Ultraband mmWave MMIC: Ku and Ka-band PAs, LNAs, switches and FEMs.

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Ultraband GaN power HEMT

Ultraband GaN Power HEMT: 650 V and 1200 V D-mode GaN-on-SiC HEMTs.

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Ultraband SATCOM phased array systems

Ultraband SATCOM & Phased Array Systems: Ku-band phased array terminals and UAV modules.

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Ultraband Technologies Product Range

Ultraband RF MMIC

Wi-Fi LNA

AN5404

Available

5 GHz ISM-band LNA for 4.9 to 5.9 GHz Wi-Fi receivers, with sub-1.5 dB noise figure from a 3.3 V supply.

  • Frequency range: 4.9 to 5.9 GHz
  • Gain: 13 dB
  • Noise figure: < 1.5 dB
  • Package: DFN 1.5 x 1.5 mm
Applications: IoT devices, Wi-Fi, Smart home.
Wi-Fi LNA

AN5405

Available

2.4 GHz ISM-band LNA with 13.5 dB gain and NF below 1.2 dB, for Wi-Fi, Bluetooth-band and IoT receivers.

  • Frequency range: 2.4 to 2.5 GHz
  • Gain: 13.5 dB
  • Noise figure: < 1.2 dB
  • Package: DFN 1.5 x 1.5 mm
Applications: IoT devices, Wi-Fi, Smart home.
SPDT RF switch

SW470A

Available

Wideband 0.1 to 6 GHz SPDT switch with insertion loss below 1.1 dB and 55 dBm IIP3.

  • Frequency range: 0.1 to 6 GHz
  • Insertion loss: < 1.1 dB
  • Input P1dB: 39 dBm
  • Package: DFN 1.5 x 1.5 mm
Applications: Base stations, Wi-Fi, Bluetooth modules, General wireless communications.
Wi-Fi FEM

FM5337

Available

2.4 GHz Wi-Fi front-end module with 34 dB gain and up to 22.5 dBm linear output power.

  • Frequency range: 2.4 to 2.5 GHz
  • Gain: 34 dB
  • Linear output power (EVM): 20 dBm @ -43 dB EVM (HE40 MCS11)
  • Package: QFN 3 x 3 mm
Applications: Wireless routers, Access points, IoT devices.
Wi-Fi FEM

FM5755

Available

5 GHz Wi-Fi front-end module for 5.15 to 5.85 GHz, 28.5 dB gain and up to 22.5 dBm linear output power.

  • Frequency range: 5.15 to 5.85 GHz
  • Gain: 28.5 dB
  • Linear output power (EVM): 17 dBm @ -43 dB EVM (VHT80 MCS11)
  • Package: QFN 3 x 3 mm
Applications: Wireless routers, Access points, IoT devices.

Ultraband mmWave MMIC

Ku-band PA

Ku-Band PA (0.5 W)

Coming soon

0.5 W class Ku-band PA for 12.5 to 14.7 GHz on a 5 V rail, QFN 3 x 3 mm.

  • Frequency range: 12.5 to 14.7 GHz
  • Output power: > 27 dBm
  • Gain: > 24 dB
  • Package: QFN 3 x 3 mm
Applications: Ku-band communications.
Ku-band PA

Ku-Band PA (2 W)

Coming soon

2 W class Ku-band PA for 12.5 to 14.7 GHz on a 5 V rail, QFN 4 x 4 mm.

  • Frequency range: 12.5 to 14.7 GHz
  • Output power: > 33 dBm
  • Gain: > 29 dB
  • Package: QFN 4 x 4 mm
Applications: Ku-band communications.
Ka-band PA

URP5A98

Available

24 to 30 GHz bare-die PA with 26 dBm output power, 17 dB gain and 30% PAE.

  • Frequency range: 24 to 30 GHz
  • Output power: 26 dBm
  • Gain: 17 dB
  • Package: Bare die
Applications: Satellite communications, 5G backhaul, High-frequency wireless transmission.
Ka-band PA

URP5B95

Available

26 to 30 GHz bare-die PA with 30 dBm (1 W) output power and 50% PAE.

  • Frequency range: 26 to 30 GHz
  • Output power: 30 dBm
  • Gain: 18.3 dB
  • Package: Bare die
Applications: Satellite communications, 5G backhaul, High-frequency wireless transmission.
Ka-band PA

URP5B98

Available

24 to 30 GHz bare-die PA with 47% PAE and 32 dBm OIP3.

  • Frequency range: 24 to 30 GHz
  • PAE: 47%
  • Output IP3: 32 dBm
  • Package: Bare die
Applications: Satellite communications, 5G backhaul, High-frequency wireless transmission.
Ka-band PA

Ka-Band PA (QFN)

Coming soon

26 to 28 GHz (n257 / n258) packaged PA in QFN 4 x 4 mm on a 5 V supply.

  • Frequency range: 26 to 28 GHz
  • Output power: > 25 dBm
  • Gain: > 18 dB
  • Package: QFN 4 x 4 mm
Applications: Satellite communications, 5G backhaul.
Ku-band LNA

Ku-Band LNA

Coming soon

10.5 to 12.75 GHz Ku-band LNA with NF below 1.2 dB and over 27 dB gain, QFN 3 x 3 mm.

  • Frequency range: 10.5 to 12.75 GHz
  • Gain: > 27 dB
  • Noise figure: < 1.2 dB
  • Package: QFN 3 x 3 mm
Applications: Satellite downlink, High-bandwidth wireless communications.
Ka-band LNA

URL6C48

Available

25 to 31 GHz bare-die LNA with over 26.5 dB gain and 2.5 dB NF at 28 GHz.

  • Frequency range: 25 to 31 GHz
  • Gain: > 26.5 dB
  • Noise figure: 2.5 dB @ 28 GHz
  • Package: Bare die
Applications: Satellite communications, Radar, High-frequency wireless data links.
Ka-band LNA

Ka-Band LNA (QFN)

Coming soon

26 to 28 GHz (n257 / n258) LNA in QFN 3 x 3 mm, NF below 2.2 dB on a 3.5 V supply.

  • Frequency range: 26 to 28 GHz
  • Gain: > 17 dB
  • Noise figure: < 2.2 dB
  • Package: QFN 3 x 3 mm
Applications: Satellite communications, Radar.
Ku-band switch

Ku-Band SPDT Switch

Coming soon

10.5 to 20.5 GHz SPDT switch with insertion loss below 1.2 dB, QFN 3 x 3 mm on 5 V.

  • Frequency range: 10.5 to 20.5 GHz
  • Insertion loss: < 1.2 dB
  • P1dB: > 33 dBm
  • Package: QFN 3 x 3 mm
Applications: Satellite transceivers, Communication test equipment, High-frequency modules.
Ka-band switch

URS6C58

Available

Ka-band SPDT switch MMIC with low loss and high linearity. Specifications on request.

  • Specifications on request
Applications: Ka-band communication systems.
Ka-band switch

Ka-Band SPDT Switch (QFN)

Coming soon

Packaged Ka-band SPDT switch in development. Specifications on request.

  • Specifications on request
Applications: Ka-band communication systems.
Ka-band FEM

URF6C55

Available

25 to 31 GHz switch + LNA front-end module on a single bare die, over 17.3 dB gain.

  • Frequency range: 25 to 31 GHz
  • Gain: > 17.3 dB
  • Noise figure: 4.7 dB
  • Package: Bare die
Applications: Ka-band satellite communications, Wireless communications.

Ultraband GaN Power HEMT

650 V D-mode GaN HEMT

UPDC4G48A8

Available

650 V depletion-mode GaN-on-SiC HEMT with 80 mOhm RON and 20 A ID max, bare die.

  • Process: GaN-on-SiC, depletion mode
  • Breakdown voltage (VBD): 650 V
  • On-resistance (RON): 80 mOhm
  • Package: Bare die
Applications: Power systems, Renewable energy, EV charging and on-board chargers, Industrial control, Aerospace and defence.
1200 V D-mode GaN HEMT

UPDC5G78B1

Available

1200 V depletion-mode GaN-on-SiC HEMT with 120 mOhm RON and 20 A ID max, bare die.

  • Process: GaN-on-SiC, depletion mode
  • Breakdown voltage (VBD): 1200 V
  • On-resistance (RON): 120 mOhm
  • Package: Bare die
Applications: Power systems, Renewable energy, EV charging and on-board chargers, Industrial control, Aerospace and defence.

Ultraband SATCOM & Phased Array Systems

Ku-band LEO phased array terminal

Azhdarchidae

Available

Electronically steered Ku-band flat-panel terminal for LEO satellites, EIRP above 66 dBm, G/T 6 dB/K.

  • Tx frequency: 12.75 to 14.5 GHz
  • Rx frequency: 10.7 to 12.75 GHz
  • EIRP: > 66 dBm
  • G/T: 6 dB/K
Applications: LEO SATCOM user terminals, Fixed, vehicle or ship-mounted ground terminals, Ground side of the AzhdaeQ UAV BVLOS link.
Modular Ku-band phased array terminal

Quetzalcoatlus

Available

Modular Ku-band phased array built from 16 x 16 AiM tiles, EIRP above 83 dBm, G/T 9 dB/K.

  • Tx frequency: 12.75 to 14.5 GHz
  • Rx frequency: 10.7 to 12.75 GHz
  • EIRP: > 83 dBm
  • G/T: 9 dB/K
Applications: GEO satellite broadband, Airborne and maritime communications, Autonomous mesh networks.
UAV Ku-band beam-steering module

AzhdaeQ

Available

Drone-mountable 3.2 kg Ku-band beam-steering terminal extending UAV links to tens of km for BVLOS flight.

  • Tx frequency: 12.75 to 14.5 GHz
  • Rx frequency: 10.7 to 12.75 GHz
  • Outline: 26 x 31 x 7 cm
  • Weight: 3.2 kg
Applications: UAV long-distance video transmission, UAV BVLOS communication.

Ultraband Part Number Overview

Part numberProduct lineTypeFrequency / RatingPackage / FormatStatus
AN5404 RF MMIC Wi-Fi LNA 4.9 to 5.9 GHz DFN 1.5 x 1.5 mm Available
AN5405 RF MMIC Wi-Fi LNA 2.4 to 2.5 GHz DFN 1.5 x 1.5 mm Available
SW470A RF MMIC SPDT RF switch 0.1 to 6 GHz DFN 1.5 x 1.5 mm Available
FM5337 RF MMIC Wi-Fi FEM 2.4 to 2.5 GHz QFN 3 x 3 mm Available
FM5755 RF MMIC Wi-Fi FEM 5.15 to 5.85 GHz QFN 3 x 3 mm Available
Ku-Band PA (0.5 W) mmWave MMIC Ku-band PA 12.5 to 14.7 GHz QFN 3 x 3 mm Coming soon
Ku-Band PA (2 W) mmWave MMIC Ku-band PA 12.5 to 14.7 GHz QFN 4 x 4 mm Coming soon
URP5A98 mmWave MMIC Ka-band PA 24 to 30 GHz Bare die Available
URP5B95 mmWave MMIC Ka-band PA 26 to 30 GHz Bare die Available
URP5B98 mmWave MMIC Ka-band PA 24 to 30 GHz Bare die Available
Ka-Band PA (QFN) mmWave MMIC Ka-band PA 26 to 28 GHz QFN 4 x 4 mm Coming soon
Ku-Band LNA mmWave MMIC Ku-band LNA 10.5 to 12.75 GHz QFN 3 x 3 mm Coming soon
URL6C48 mmWave MMIC Ka-band LNA 25 to 31 GHz Bare die Available
Ka-Band LNA (QFN) mmWave MMIC Ka-band LNA 26 to 28 GHz QFN 3 x 3 mm Coming soon
Ku-Band SPDT Switch mmWave MMIC Ku-band switch 10.5 to 20.5 GHz QFN 3 x 3 mm Coming soon
URS6C58 mmWave MMIC Ka-band switch Request datasheet Request datasheet Available
Ka-Band SPDT Switch (QFN) mmWave MMIC Ka-band switch - - Coming soon
URF6C55 mmWave MMIC Ka-band FEM 25 to 31 GHz Bare die Available
UPDC4G48A8 GaN Power HEMT 650 V D-mode GaN HEMT 650 V Bare die Available
UPDC5G78B1 GaN Power HEMT 1200 V D-mode GaN HEMT 1200 V Bare die Available
Azhdarchidae SATCOM & Phased Array Systems Ku-band LEO phased array terminal 12.75 to 14.5 GHz 56 x 56 x 11 cm Available
Quetzalcoatlus SATCOM & Phased Array Systems Modular Ku-band phased array terminal 12.75 to 14.5 GHz Request datasheet Available
AzhdaeQ SATCOM & Phased Array Systems UAV Ku-band beam-steering module 12.75 to 14.5 GHz 26 x 31 x 7 cm Available

Understanding the Difference: GaN vs GaAs Compound Semiconductors

What is GaN (Gallium Nitride)

GaN HEMTs on silicon carbide (GaN-on-SiC) combine a wide bandgap with high breakdown voltage and excellent thermal conductivity. That gives very high power density, which is why GaN is the process of choice for high-power RF amplifiers in radar, SATCOM and 5G, and for high-voltage power switches such as Ultraband's 650 V and 1200 V power HEMTs.

What is GaAs (Gallium Arsenide)

GaAs pHEMT is a mature, high-electron-mobility process with very low noise and excellent linearity at microwave and mmWave frequencies. It is widely used for LNAs, switches, front-end modules and moderate-power PAs, where noise figure, insertion loss and linearity matter more than raw output power.

Why Source Ultraband Technologies from Emerges Singapore

Sourcing Ultraband parts from an authorised distributor protects you on traceability, warranty and long-term support. Emerges is an authorised Ultraband Technologies distributor, so every part is genuine Ultraband product backed by full manufacturer support, and we can relay datasheets, samples and custom-design requests directly to Ultraband's engineering team in Taiwan.
For aerospace, defence and infrastructure procurement, certification matters. Emerges holds AS9120B and ISO 9001 certification and is registered as an IAQG aerospace electronics supplier, giving your quality and compliance teams the documentation trail they need. Singapore-based engineers provide technical pre-sales support, from MMIC selection and bare-die handling to phased array integration.
We ship to Singapore, Malaysia, Vietnam, Thailand and the wider Asia-Pacific region, backed by more than 30 years of experience supplying RF and microwave components to demanding sectors.

Ultraband Product Lines and Related RF Products

Explore each Ultraband product line, plus complementary RF and microwave products from our other authorised lines.

Ultraband Technologies FAQs

Yes. Emerges is an authorised Ultraband Technologies distributor based in Singapore, supplying genuine Ultraband parts with full manufacturer support across Southeast Asia.

Ultraband designs RF MMICs (Wi-Fi LNAs, switches and front-end modules), mmWave MMICs for Ku and Ka-band (PAs, LNAs, switches and FEMs), GaN-on-SiC power HEMTs rated at 650 V and 1200 V, and Ku-band phased array SATCOM terminals and UAV modules.

Ultraband Technologies is headquartered in Zhubei City, Hsinchu County, Taiwan. It was founded in March 2020 as a fabless III-V compound semiconductor IC design house.

Use the Request a Quote button on any Ultraband page, or contact Emerges directly. Many Ultraband datasheets are supplied on request, and we will obtain the latest specifications from Ultraband for you.

Parts marked Coming soon are in development at Ultraband. Contact us to register interest and we will send specifications and sample availability as soon as they are released.

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