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5G RF Front End Module features | Qorvo 5G Front End Module

This application note covers 5G RF Front End Module basic features. It mentions basic requirements of 5G technology needed in RF front end module. It mentions 5G RF Front End Module specifications from Qorvo.

About 5G:
It is the fifth generation wireless technology published in 3GPP release 15 and beyond. It supercedes 4G standards viz. LTE, LTE advanced and LTE advanced pro. It is used for cellular as well as IoT (Internet of Things) applications. Initially 5G mobile devices work in NSA (Non Standalone) mode in which they utilizes LTE radio and core network for control and management and uses 5G carrier for data transmission/reception. Later on 5G devices will operate in complete SA (Standalone) mode and utilizes 5G NR network for both control/data operations.

5G wireless technology supports various frequency bands viz. sub 1 GHz, 1 to 6 GHz and above 6 GHz(millimeter wave frequencies). 5G Front End should support any one of these frequency bands. 5G uses high bandwidth (100 MHz per subcarrier) compare to LTE (20 MHz per subcarrier).

5G technology delivers lower latency (< 1ms), higher data rate (>10 Gbps) and more connection density compare to 4G LTE technology. Refer 4G versus 5G for more information. 5G is mainly targetted to address high bandwidth requirements for live video and AR (Augmented Reality).

What is 5G RF Front End?

5G RF Front End Module

5G RF front end should support following in order to work satisfactory in 5G network.
• It should support 5G frequency bands.
• It should support massive bandwidth.
• It should provide high output power.
• It should support both 4G and 5G waveforms.
• Power efficiency and linearity as per requirements.
• It should occupy less space.

Figure-1 depicts internal diagram of 5G RF Front End components. RF Front End >> mainly refers to LNA and PA modules used between antenna and RF transceiver. As shown RF front end consists of PA (Power Amplifier), LNA (Low Noise Amplifier), Tx/Rx Switch, Wideband filter etc. It is connected between 5G Transceiver and antenna.

Qorvo 5G RF Front End

The Qorvo device part number QM19000 is used as 5G front end. Following are the silent features of the device.
➤It supports 3.3 to 4.2 GHz frequency band.
➤It supports 4G and 5G waveforms (CP-OFDM and DFT-S-OFDM).
➤It supports ET (Envelope Tracking) and APT (Average Power Tracking) modes. Hence it delivers high linearity and high saturated efficiency.
➤It supports power class-2.
➤It occupies less space and hence other space can be used for 4x4 MIMO (downlink) and 2x MIMO (uplink) based components/devices.
➤It houses variable gain amplifier (VGA) to vary gain/attenuation requirements.

About Qorvo

Qorvo is american semiconductor company which designs and develops RF systems and solutions for wireless and broadband communications. It has been founded in 2015 by merger of TriQuint Semiconductor and RF Micro Devices. Qorvo Inc. develops core technologies and radio frequency (RF) solutions to mobile, infrastructure, defense/aerospace and Internet of Things markets. The company is headquartered in Greensboro, North Carolina.
Website: https://www.qorvo.com/

5G NR Numerology | 5G NR Terminology

5G NR Control channels | 5G NR Traffic Channels | 5G NR Reference Signals and sequences


This 5G tutorial also covers following sub topics on the 5G technology:
5G basic tutorial
5G Frequency Bands
5G millimeter wave tutorial
5G mm wave frame
5G millimeter wave channel sounding
Difference between 4G and 5G
5G testing and test equipments
5G network architecture
5G NR Physical layer
5G NR MAC layer
5G NR RLC layer
5G NR PDCP layer

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