Fostering New Trends In MMIC Design

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New GaN Products Pre-released in S, C, X and Ku-band for upto 30W. Please visit our Amplifier section for more information or contact us at

About Us


Aelius Semiconductors Pte Ltd is a fabless MMIC Design House, based in Singapore. 

Aelius Semiconductors develops GaAs and GaN MMIC products based on a robust and reliable design philosophy. These designs are fabricated at leading foundries across the world. The products are tested and packaged as per customer's requirement utilizing state-of-the-art facilities.

Products of Aelius Semiconductors find applications in Wireless & Telecom, Industrial, Military & Space Markets. We are able to offer products with competitive design / production time lines and costs. Aelius also offers the flexibility to custom-package the products to customer's chosen configuration of die, package, or module.

Aelius Semiconductors also custom designs high performance MMICs for specific customer applications. The custom designs are undertaken in close consultation with customer's system designers to ensure seamless integration and manufacturability.

Aelius Semiconductors is a 100% subsidiary of Astra Microwave Products Limited, an Indian public listed company engaged in design, development and production of RF and Microwave Systems and Sub-Systems.



Aelius has the ability to achieve very high levels of integration using specific discrete components. For such requirements, Aelius works closely with customers to understand their requirements and develop custom multi-functional MMICs.

Design services

  • Robust design flow for reliability includes sensitivity analysis, design centering and yield analysis.
  • Turnkey design + prototype + product development.
  • Specialty services for designs up to GDS-2 tape level using foundry rules conforming to the best international standards and specifications.

Aelius Semiconductors also undertakes design and development of MMIC based Multi-chip Modules required for subsystems like transceivers, T/R modules, beam former etc. We have successfully executed several specific assignments like designing wide band high isolation switches, custom multi-chip packages and connector-ized MMIC modules. 

A glimpse of some of the high end activities that we are pursuing -

T/R Module Chipsets

Aelius has successfully established itself as a one stop shop for all T/R module solutions by providing complete MMIC chipsets in L, S, C, X and Ku bands. These T/R module MMICs are available as three segments - Receive chain components, Transmit chain components and Control chain components (common to both transmit and receive paths). 

The control chain comprises of 5 / 6 / 7 / 8 -bit digital attenuator, a 5 / 6 / 7 / 8 -bit digital phase shifter, and SPDT switch, all of them with on-chip TTL Drive. This makes it very easy for the user to interface the MMICs with external controls. In addition, the LNA's available from Astra stable mean that it is easy to make receive chain with low noise figures. The availability of both self-biased and dual biased amplifiers further adds to the flexibility in design of the receiver. The MMICs in the transmit chain can cater forsufficiently high power levels typically required for these applications. Aelius also supports the system designer with required driver amplifiers and medium power amplifiers to achieve required power levels at the Transmitting Antenna. These power amplifiers feature very good PAE and hence consume lower power.

System- in - Package modules

As demand for packaged modules with multi-functional capability is increasing, Aelius is focusing on System-In-Package modules wherein a drop-in or a connector-ized module can be used to support multiple functionalities. Aelius has developed several T/R control components in various frequencies as SIP modules. These modules are made to order and can be quickly customized to meet user requirement.

Work on RF MEMS

Recently Aelius has initiated R&D in RF MEMS technology to continue its strong growth in emerging technologies. The research focuses on development of RF MEMS SPST and SPDT switches and digital phase shifter. At Aelius Semiconductors, extensive research is in progress to address these challenges and develop a reliable MEMS product

Work on LTCC

By integrating the main front-end microwave functionality into multifunction MMICs and using multilayer ceramic substrates, highly compact TR Modules can be developed. As we strongly believe that Low Temperature Co-fired Ceramics (LTCC) technology is the answer, design & development of LTCC based products are in progress.

Aelius Semiconductors also delivers MMICs in a range of surface mount plastic packages viz. QFN, SOIC etc., Glass flat packs, and Metal packages. Aelius also delivers custom designed connector-ized / drop-in MMIC modules manufactured to international standards.



Aelius Semiconductors' team of MMIC design engineers carries a combined 70+ man years of dedicated MMIC design experience. Each engineer works with industry standard MMIC CAD software that includes circuit simulators like Agilent ADS, AWR Microwave Office along with ADS momentum, MWO Axiem and Sonnet for EM simulation. In addition, they have access to other higher end software for 3D EM simulation. The former Microelectronic Technologies Division of AMPL which grew to be India's largest and best equipped GaAs MMIC design and production house, has been spun off to Aelius Semiconductors Pte Ltd, Singapore.

Aelius has a fully equipped state-of-the-art assembly, test and packaging facility which includes its own RF on-wafer probing test and measurement facility for optimizing designs to various foundry processes. On-wafer RF probing provides an excellent platform to validate and fine tune designs.

This division has access to the largest Space Qualified MMIC assembly and test facility in India. Packaging of MMICs is also undertaken as per customer requirement. Using the in-house facility, Ceramic and hermetically sealed packaged MMICs can be delivered. For Hermetically sealed packages, gross and fine leak test can be conducted as required. Our Environmental test facility is capable of carrying out MIL grade, Jedec as well as IEC compliant qualification tests including Temperature-cycling, Burn-in, Mechanical Shock test, vibration test on all three axes, and thermo-vacuum tests.

MMIC design and manufacturing

  • State of the art tools like Microwave Office/Advanced Design System (ADS)
  • Class 10000 and class 100000 clean rooms
  • Class 100 laminar flow benches
  • Complete ESD care
  • Temperature/humidity-controlled desiccators with nitrogen purging for bare chips storage
  • Humidity/temperature-controlled bonded material store
  • Fume absorbers with soldering stations to avoid contamination
  • Dicing system for cutting alumina substrate, and GaAS/GaN/silicon wafer
  • Resistive welding system for package sealing


  • Semi-Automatic and Manual on-wafer probe stations
  • Scalar and vector network analyzers
  • Noise figure analyzers
  • Microwave frequency counters
  • Power meters
  • Signal generators
  • Function and pulse generators
  • Open air antenna test range
  • High-precision bonding machines
  • Temperature controlled hot plate with nitrogen purging facility for eutectic attachment
  • Clean room compatible oven for curing epoxy 
  • X10-X100 magnification microscopes
  • Thermosonic wire bonders for deep access ball and wedge bonding Parallel gap welding

ESS equipment

  • Temperature/humidity/particle count measurement equipment
  • 100X-500X magnification inspection microscope
  • Testers for bond pull and die sheer strength
  • DC probing station for on-chip measurement of DC parameters
  • Environment chambers (-65 celsius to +175 celsius; 98% RH)
  • Vibration equipment for sine, random, sine over random
  • Gross leak and fine leak detectors for hermetic verification of packages



High quality standards are maintained at Aelius Semiconductors starting from the design stage to product delivery. A structured process is followed for different activities at each stage of product development.

Aelius meticulously follows Industry standard design procedures/flows to ensure shorter design cycles to develop reliable products. The division works with the associated Foundries as an extended team to regularly monitor and analyze process information to maintain product quality. All fabricated wafers pass through stringent quality control and quality acceptance procedures. This includes 100% visual inspection and sample on-wafer DC / RF tests to ensure reliable product performance. Full RF characterization is done on sample dies to map the wafers for their RF performance.

Aelius MMICs are qualified as per MIL-STD-883. For more information on qualification, please contact us.

Get In Touch

Aelius Semiconductors Pte. Ltd.
Regus Tanjong Pagar
Level 34, 77 Robinson Road
Singapore 068896
Tel: +65-68092093
Fax: +65 63360650

Sales Representative - International

Aelius Semiconductors Pte. Ltd.
Regus Tanjong Pagar
Level 34, 77 Robinson Road
Singapore 068896
Tel: +65-68092093
Fax: +65 63360650

Sematron Italia
Vinale Marx 153/2
00137 Rome
Tel: +39-06-86895015

Starlight Technologies Ltd
P.O. Box 25369
Tel-Aviv 61253
Tel: +972-3-9410555

MTI Summit SPB
Nevsky prospect 55,
Building A,
Business center "Regus",
Office 336, St. Petersburg,
191025 Russia
Tel:+ 7-812-627-14-80

Aelius Semiconductors,
ASTRA Towers, 4th Floor,
Survey No. 12(P),
Kothaguda Post, Kondapur,
Hitechcity, Hyderabad 500084
Telangana, INDIA
Tel: +91-40-30618000

EZ Hightech
RM705, 250, Hagui-ro,
Dongan-gu, Anyang-si,
Gyeonggi-do 14056, Korea
Tel: +82-31-382-6500

RF Solution, Co. Ltd.
45th floor, Sunshine60, 3-1-1
Higashi Ikebukuro, Toshima-Ku
Tokyo 170-6045, Japan
Tel: +81-3-5979-2014

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