Recently, industry information reported that domestic RF front end L-PAMiD chip will enter the mass production stage, and it is expected that large-scale shipment will be realized in the second half of this year. It is reported that the chip is developed by VANCHIP, a domestic RF front-end chip design company, in collaboration with ONMICRO. The company's main products are Wi-Fi 6/6E, primarily used in mobile phones and routers. It has already achieved large-scale production and shipments. The WiFi 7 products launched this year are currently being sampled and promoted to clients. The company's 5G RF power amplifier module achieved a monthly revenue of 890 million yuan last year, accounting for 44.32% of the company's revenue from RF power amplifier module products.
It is understood that the 5G L-PAMiD module is a RF front-end module integrating power amplifier, low noise amplifier, coupler, RF switch, filter, dual/multiplexer, etc. It can support the transceiver requirements of 5G retilling frequency band, as well as the transceiver requirements of 4G, 3G and 2G frequency bands in backwards compatibility, and support the 5G + 4G dual connection requirements of most frequency bands.
Among them, RF front-end refers to the part between antenna and IF (or baseband) circuit in communication system. In this period, the signal is transmitted in the form of radio frequency. For wireless receivers, the RF front-end usually includes an amplifier, a filter, a frequency converter and some RF connection and matching circuits. RF front end module consists of a power amplifier (PA), a filter, a diplexer, a RF switch, a low noise amplifier, a receiver/transmitter and so on. The power amplifier is responsible for amplifying the RF signal of the transmitting channel; The filter is responsible for filtering the transmitted and received signals; Duplexer is responsible for duplex switching of FDD system and RF signal filtering of receiving/transmitting channel; RF switch is responsible for switching between receiving and transmitting channels; Low noise amplifier is mainly used for small signal amplification in the receiving channel; The receiver/transmitter is used for frequency conversion and channel selection of RF signals.
Radio frequency devices are the core of wireless connection. Wherever wireless connection is needed, radio frequency devices are necessary. Driven by the application of Internet of Things, the number of wireless connections in the world will multiply in the future. The demand for wireless connection stimulates the RF industry, and there are more and more wireless connection protocols for mobile phones, which drives the continuous growth of the RF device industry. Radio frequency devices are also the basic components of wireless communication equipment, which play two important roles in wireless communication, that is, they convert binary signals into high-frequency wireless electromagnetic wave signals in the process of transmitting signals, and convert received electromagnetic wave signals into binary digital signals in the process of receiving signals.
No matter what kind of communication protocol, the communication frequency used is high or low, and the RF device module is an essential basic component of the system. Whether it is NFC system using 13.56 Mhz signal as transmission carrier, GSM communication system using 900/1800 Mhz signal as transmission carrier, or unmanned millimeter wave radar using 24Ghz and 77Ghz electromagnetic wave signal as transmission carrier, it is necessary to be equipped with RF device module. From the early 2G single communication system to the present 2G, 3G, 4G, Wifi, Bluetooth, NFC and FM, mobile phones need to support more than 7 wireless communication systems, and the value of RF devices alone is several times that of the system ten years ago. The evolution of 2G-3G wireless communication has gone through three stages: UMTS, HSPA and HSPA +. The evolution of 3G-4G has gone through three stages: class 1-2, class 3-4 and class 5.
5G technology is a gradual process, and innovative RF device technology is expected to be applied in 4.5/4.9 G. In these intermediate forms, some RF technologies will be commercialized. RF devices have vital applications in consumer electronics and military industry, and the attention of industrial capital and national large funds will increase day by day. As an indispensable foundation of wireless communication, the technological innovation of RF devices is one of the core engines to promote the development of wireless connection. Under the environment of large-scale growth of networked devices, RF device industry is the fastest growing and most certain directional asset in the future. With the help of capital from all sides, the domestic RF device industry will usher in a new round of great development opportunities.
Domestic L-PAMiD chip enters mass production stage, and RF device industry welcomes development opportunities-China.exportsemi.com
