We Oakinfo,  focuses on semiconductor design for satellite communication and navigation chips, providing integrated solutions for chips, 

modules, and terminal products. Its core product is multi-mode and multi frequency baseband RF integrated satellite communication chips, 

targeting consumer mobile phones, drones, smart cars, low altitude economy, and wide area Internet of Things customers, providing chip, module, and terminal solutions.

AK900 satellite communication baseband radio frequency integrated chip is a new generation of multi-mode satellite narrowband communication single-chip connection solution. I

t is specially designed for Tiantong satellite and low-orbit satellite narrowband communication networks. 

It is oriented to narrowband voice terminals such as civilian terminals and special industry application terminals. ,

 chips for data link applications, and communication solutions for IoT applications that require uninterrupted wide-area connectivity in small size and low power consumption. 

The AK900 baseband radio frequency integrated chip supports multi-band and multi-mode radio frequency bands from 200MHz to 2.4GHz, supporting major satellites

Communication radio frequency band. It internally integrates radio frequency front-end algorithms and hardware acceleration 

modules for the main encoding and decoding algorithms of satellite communication channels to support satellite narrowband voice services and data link services. 

The AK900 chip has high performance and high scalability. The chip integrates the CEVA-BX1 core with a maximum operating frequency of 400MHz. It supports FreeRTOS, 

integrates an external storage controller, can be expanded to a maximum of 64Mb RAM, and has peripheral interfaces such as I2S, UART, and 7816. It has a strong software and hardware expansion capabilities.

What is satellite communications?

Satellite communication is a technology that uses artificial satellites for information transmission and communication. 

The satellite communication system consists of ground stations, satellites and user terminals. It uses satellites as relay stations to transmit signals from the sender to the receiver. 

It has the advantages of wide coverage, large communication capacity, and good transmission quality. I

t can realize two or more Communication between ground stations, handheld terminals, and spacecraft and ground stations is widely used in telephone, 

Internet, radio and television transmission and other fields. It can be summarized from the above definition that satellite communications are divided into three types: 

satellite telephone communications, satellite Internet communications, satellite radio and television communications. 

From February 27 to March 2, 2023, the 2023 World Mobile Communications Conference (MWC2023) was held in Barcelona, Spain. 

At that time, satellite communications became the focus of MWC2023. As predicted by IT Times in January, satellite communications will become a standard feature of flagship mobile phones. 

The era is coming when cell phones and cars will connect directly to satellites. A race for space resources has begun around the world, represented by Musk's "Starlink Project", 

which has launched the space enclosure model; in China, mobile phone manufacturers have taken satellite communications as their main selling point and become standard equipment for flagships. 

In the future, after the satellite Internet that integrates the sky and the earth is built, no matter we are in the ocean or the desert, we will never lose contact. 

Below, a brief introduction to three types of satellite communications and chips: Satellite phone communication chip Satellite phone is a communication device based on the satellite communication system to transmit information, 

that is, a satellite relay communication device. Satellite relay talkers are the product of modern mobile communications, 

and their main function is to fill areas that cannot be covered by existing communications (wired communications, wireless communications) terminals. 

After years of hard work, China Telecom has released numbers to the commercial market, and my country has entered the "mobile phone era" 

of satellite mobile communications, filling the gap in domestic independent mobile communications systems and breaking the status quo of relying on foreign satellite mobile communications services. 

Tiantong satellites have wide coverage, strong communication capabilities, and no blind spots in services. 

The satellite mobile communication service can provide two common services: one is a public satellite relay phone, and the other is a dedicated satellite relay phone. 

The former needs to be interconnected with the public switched phone network to enable a mobile entity to call any place in the world. Fixed intercom, the latter is simply between a mobile station and its dispatcher. 

There are two satellite communication chips in the Mate 60 Pro, one is a satellite mobile communication baseband chip, and the other is a radio frequency transceiver chip for satellite communication. 

Satellite mobile communication baseband chips include:

1. Oakinfo: The Three-generation voice interconnection satellite communication chip AK900  is about to be taped out, and strives to be installed on mobile phone terminals before the end of the year. 

2. Huali Chuangtong: has released a self-developed satellite mobile communication and navigation integrated baseband chip, model Named "HTD1001", the satellite communication series chips developed by it have the characteristics of low power consumption, high integration and complete functional components. 

3. Qualcomm, MediaTek, and UNISOC, the three major mobile phone chip manufacturers, have all made arrangements to create basic conditions for mobile phones to directly connect to satellites. Unisoc has released the first 5G IoT-NTN satellite communication SoC chip V8821, which adopts advanced 22nm process, integrates baseband, Transceiver, PMIC, FLASH/SRAM, supports R17 IoT-NTN standard, and can realize two-way voice calls and data The transmission function has the characteristics of low power consumption and small area, and can be used in the field of direct connection of mobile phones to satellites, wearable products, satellite Internet of Things products, satellite Internet of Vehicles products, etc. In 2024, mobile phone satellite communication will continue to become a hot spot. On January 31, vivo X100 Pro+ confirmed that it will be equipped with satellite communication functions and can make satellite calls.

The following parts are popular search parts in Embedded - DSP (Digital Signal Processors).

The following parts include "AK900" in ISSI, Integrated Silicon Solution Inc“AK900”.

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