Sunday, May 26, 2024

Single-Die Digital Radio For 4G/5G Cellular Networks

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The device integrates a digital-to-RF radio with 500mW power amplifiers and embedded low Physical Layer Fast Fourier Transform/Inverse Fast Fourier Transform capabilities.

Hermes TWO

Innophase has launched Hermes TWO (H2), a digital to Radio Frequency (RF) radio for 4G/5G Open Radio Access Network (O-RAN) Radio Units. The company claims to incorporate a patented “Digital-to-RF” radio architecture and digital processing elements into a single-chip design, significantly reducing power consumption. The device uses advanced CMOS technology to standardise and enhance system integration and efficiency. This results in a streamlined, energy-efficient system architecture suitable for various cellular network radios. The device finds applications in various areas, including in-building wireless applications or private networks, network densification and high-efficiency cells.

The company claims that by integrating critical radio components like power amplifiers, Transmitter/Receiver (Tx/Rx) chains, digital signal processing including time/frequency conversions like Fast Fourier Transform/Inverse Fast Fourier Transform (FFT/IFFT), and system control onto a single CMOS semiconductor chip, unprecedented levels of integration are achieved. This development enables highly efficient implementation of cellular network radio units, including small enterprise cells. The chip offers a simplified, low-power system architecture suitable for various cellular network radios. H2 introduces a revolutionary architecture that directly converts digital signals to an impressive 27dBm RF power output to achieve an extended wireless range. The system supports analogue (RF) beam steering and has a 100MHz programmable occupied bandwidth for flexible configuration. 

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“Our 5G network radio solutions take advantage of the unique Hermes TWO architecture to deliver the most cost-effective enterprise small cells products. We are working with leading semiconductor companies and cellular radio manufacturers to optimise the overall system bill-of-materials to exceed the industry’s expectations,” said Greg Winner, VP & GM, InnoPhase Inc.

Some of the key features of H2 include:

  • Radio Access: 4G / 5G
  • Duplex Modes: TDD / FDD
  • Antennas: 2T2R + ObsRx
  • Power Output: 500 mW/Tx
  • Bandwidth: 100MHz
  • O-RAN Support: Split 7.1 Symbols

The device features a “Digital-to-RF” radio architecture that directly converts packetised O-RAN symbols to amplified RF power through Serializer/Deserializer (SERDES) technology. To expedite customer product development and validation, the Hermes TWO devices will be integrated into a Radio Development Kit (RDK).
For more information, click here.

Nidhi Agarwal
Nidhi Agarwal
Nidhi Agarwal is a journalist at EFY. She is an Electronics and Communication Engineer with over five years of academic experience. Her expertise lies in working with development boards and IoT cloud. She enjoys writing as it enables her to share her knowledge and insights related to electronics, with like-minded techies.


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