TD-SCDMA/WLAN (Time Division-Synchronization Code Division Multiple Access)/(Wireless Local Area Network) multi-standard transceiver

Abstract

The invention relates to a TD-SCDMA / WLAN (Time Division-Synchronization Code Division Multiple Access) / (Wireless Local Area Network) multi-standard transceiver which comprises a signal processor, an analog-to-digital converter (ADC) and a digital-to-analog converter (DAC), wherein the ADC is connected with the DAC, the ADC is connected with a receiving frequency mixer through a receiving filter, a local oscillator frequency mixer is connected with a second local oscillator divider and a first local oscillator divider, the second local oscillator divider is connected with a voltage-controlled oscillator through the first local oscillator divider, and the voltage-controlled oscillator is connected with the output end of the signal processor through a frequency synthesizer; the DAC is connected with a first sending frequency mixer and a second sending frequency mixer through a sending filter; and the receiving frequency mixer, the first sending frequency mixer and the second sending frequency mixer are all connected with the local oscillator frequency mixer. The frequency is mixed through adopting the same receiving frequency mixer; and by sharing the receiving frequency mixer, the receiving filter, the ADC, the DAC and the sending filter, the invention saves the chip space, reduces the volume of terminal equipment, lowers the cost, and improves the portability.

Description

Technical field [0001] The present invention relates to a transceiver, especially a TD-SCDMA (Time Division-Synchronous Code Division Multiple Access) / WLAN (Wireless Local Area Networks) multi-standard radio transceiver, specifically In other words, it is a transceiver that integrates TD-SCDMA and WLAN transceiver links, and belongs to the technical field of mobile communications. Background technique [0002] TD-SCDMA has the following characteristics: high spectrum utilization, the frequency band reserved for TD-SCDMA in my country is up to 155M, and TD-SCDMA frequency resources are abundant; the penetrability is not strong, and the TD-SCDMA signal in the building without indoor coverage is very good. Weak; high mobility. [0003] WLAN has the following characteristics: low cost; high speed (such as: IEEE802.11g 54Mbps, 11b 11Mbps); mobility is not high. [0004] The TD-SCDMA and WLAN are both TDD (Time Division Duplexing), and both have broadband mobility and are connected to the...

AI Technical Summary

Problems solved by technology

However, the above solution uses two independent modules. On the one hand, the cost is high. On the other hand, because the two independent modules are combined into the same terminal, it is equivalent to the simple combination of transceivers in each mode, resulting in a large volume of terminal equipment. Larger, affecting portability

In addition, in order to reduce the size of terminal equipment, the existing technology often integrates the above-mentioned multiple standard transceivers into the same semiconductor chip, but the transceivers of each mode are still independent of each other, which is a simple combination, and the hardware overhead is large. Larger chip area, resulting in higher cost

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