Recalling the history of the development in recent years, GPS chips, with the combination of GPS and other products one after another, and stressed the emphasis on short, light volume of end products, GPS chips into system-on-chip technology is an inevitable trend. The current vendor for the GPS single-chip-based approach can be divided into single-chip radio frequency or baseband, and integrate more functionality.
GPS Baseband DSP chip is the key
When talking about GPS chip, the key technology, which includes responsibility for signal processing – fundamental frequency (Baseband) and receive signals – radio frequency (RF). As the GPS signal frequency (1575.42MHz) at a distance from an altitude of 20,000 kilometers on the ground, the signal is very unstable, so the day after the line of the received signal through a series of signal amplification, filtering noise, down-conversion, sampling and other processes (RFfront end), then After RF, the signal into the baseband processing section, the front-end digital signal after sampling operation, the output so that the user interface, including GPS Baseband DSP chip is the core component, responsible for address signal processing.
Based on the above point of view, RF and baseband two parts, including microprocessors Microprocessar), low-noise amplifier (LowNoise Amplifier; LNA), digital part (Digital ection), radio frequency parts (RF Section), antenna (Antenna Ele-ment ), input and output drive (GPIO andDrivers), as well as the microprocessor peripheral circuits (Pro-cessor peripherals) several important components. In the RF-chip section, there are many manufacturers amplifiers, filters, down-conversion device, frequency synthesizers and oscillators such as integrated in a chip; in some of the fundamental frequency, it is integrated CPU, memory (DRAM, SRAM, Flash), power management and clock.
Thus, we see diminishing size of GPS chip, combined with the development of GPS chip from the pairs of modules into a single module (Single chip), the future of GPS equipment products will become increasingly prosperous development, chip demand is growing. In addition, GPS chips will also be faced with the customization needs of most of the past, GPS chip in the car on the market. Currently, GPS chip applications, has begun to be used in cell phones and PDA, or a particular individual to carry equipment, such as the elderly, children with tracking devices on. The GPS chip may also be other functions, such as Bluetooth, USB, etc. integration. Thus, for specific applications designed for customized modules, will also be increasing. GPS chip into the world or in the development of mostly foreign firms, such as SiRF, TI, Xemics, Freescalc, STM, etc. are introduced GPS chip maker.
Recalling the history of the development in recent years, GPS chips, with the combination of GPS and other products one after another, and stressed the emphasis on short, light volume of end products, GPS chips into system-on-chip technology is an inevitable trend. The current vendor for the GPS single-chip-based approach can be divided into single-chip radio frequency or baseband, and integrate more functionality.
GPS Baseband DSP chip is the key
When talking about GPS chip, the key technology, which includes responsibility for signal processing – fundamental frequency (Baseband) and receive signals – radio frequency (RF). As the GPS signal frequency (1575.42MHz) at a distance from an altitude of 20,000 kilometers on the ground, the signal is very unstable, so the day after the line of the received signal through a series of signal amplification, filtering noise, down-conversion, sampling and other processes (RFfront end), then After RF, the signal into the baseband processing section, the front-end digital signal after sampling operation, the output so that the user interface, including GPS Baseband DSP chip is the core component, responsible for address signal processing.
Based on the above point of view, RF and baseband two parts, including microprocessors Microprocessar), low-noise amplifier (LowNoise Amplifier; LNA), digital part (Digital ection), radio frequency parts (RF Section), antenna (Antenna Ele-ment ), input and output drive (GPIO andDrivers), as well as the microprocessor peripheral circuits (Pro-cessor peripherals) several important components. In the RF-chip section, there are many manufacturers amplifiers, filters, down-conversion device, frequency synthesizers and oscillators such as integrated in a chip; in some of the fundamental frequency, it is integrated CPU, memory (DRAM, SRAM, Flash), power management and clock.
Thus, we see diminishing size of GPS chip, combined with the development of GPS chip from the pairs of modules into a single module (Single chip), the future of GPS equipment products will become increasingly prosperous development, chip demand is growing. In addition, GPS chips will also be faced with the customization needs of most of the past, GPS chip in the car on the market. Currently, GPS chip applications, has begun to be used in cell phones and PDA, or a particular individual to carry equipment, such as the elderly, children with tracking devices on. The GPS chip may also be other functions, such as Bluetooth, USB, etc. integration. Thus, for specific applications designed for customized modules, will also be increasing. GPS chip into the world or in the development of mostly foreign firms, such as SiRF, TI, Xemics, Freescalc, STM, etc. are introduced GPS chip maker.