News Article

Plextek Reveals 28GHz Power Amplifier For Emerging 5G Standard

4-channel IC design offers a compact means of beam steering integral to the PA

Plextek RFI presented details of  'A 4-Channel 28GHz Power Amplifier with 4-Bit Digital Phase Control for 5G RF Front Ends' at a 5G Radio Technology Seminar organised by The IET yesterday.

Plextek company also released a white paper on the development describing the design of a 4-channel transmitter IC with each channel containing a PA and an independently controllable 4-bit phase shifter. A layout plot of one channel of the transmitter chip is shown above. The IC is designed using a commercially available 0.15µm GaAs pHEMT process and is intended to be housed in a low cost SMT package suitable for low cost volume production.

5G communications technology promises the user the perception of near infinite capacity. This requires a step change in data rates, and will be facilitated by a move to higher transmission frequencies where wider bandwidths are more readily available. New innovative components will be required to meet this demand.

The 27.5 to 29.5GHz band is a strong candidate for the new 5G radio interface and much of the research undertaken to date has considered this band.

The 4-channel power amplifier IC design described offers a compact means of providing beam steering as an integral part of the PA. Each channel of the IC includes a PA with an output power capability of +30dBm at 1dB compression and an IP3 of +38dBm, and includes an integral 4-bit, digitally controlled phase shifter having an rms phase error of 2.3°.

Liam Devlin of Plextek RFI will be presenting more detailed information on the IC at the next ARMMS RF and Microwave Conference on 20 - 21 April.

AngelTech Live III: Join us on 12 April 2021!

AngelTech Live III will be broadcast on 12 April 2021, 10am BST, rebroadcast on 14 April (10am CTT) and 16 April (10am PST) and will feature online versions of the market-leading physical events: CS International and PIC International PLUS a brand new Silicon Semiconductor International Track!

Thanks to the great diversity of the semiconductor industry, we are always chasing new markets and developing a range of exciting technologies.

2021 is no different. Over the last few months interest in deep-UV LEDs has rocketed, due to its capability to disinfect and sanitise areas and combat Covid-19. We shall consider a roadmap for this device, along with technologies for boosting its output.

We shall also look at microLEDs, a display with many wonderful attributes, identifying processes for handling the mass transfer of tiny emitters that hold the key to commercialisation of this technology.

We shall also discuss electrification of transportation, underpinned by wide bandgap power electronics and supported by blue lasers that are ideal for processing copper.

Additional areas we will cover include the development of GaN ICs, to improve the reach of power electronics; the great strides that have been made with gallium oxide; and a look at new materials, such as cubic GaN and AlScN.

Having attracted 1500 delegates over the last 2 online summits, the 3rd event promises to be even bigger and better – with 3 interactive sessions over 1 day and will once again prove to be a key event across the semiconductor and photonic integrated circuits calendar.

So make sure you sign up today and discover the latest cutting edge developments across the compound semiconductor and integrated photonics value chain.



Search the news archive

To close this popup you can press escape or click the close icon.
Register - Step 1

You may choose to subscribe to the Compound Semiconductor Magazine, the Compound Semiconductor Newsletter, or both. You may also request additional information if required, before submitting your application.

Please subscribe me to:


You chose the industry type of "Other"

Please enter the industry that you work in:
Please enter the industry that you work in:
Live Event