Transceiver used for wireless ultra-wideband and method for transceiving signal

Abstract

The invention discloses a transceiver used for a radio super broadband, which comprises an antenna, a band-pass filter, a switch, a frequency integrating device, a receiver and a transmitter, wherein the antenna is used for receiving and transmitting RF signals; the band-pass filter is used for filtering out disturbance signals outside the band and in the RF signals; the switch is used for switching a transmitting chain and a receiving chain; the frequency integrating device is used for providing two paths of local oscillation signals of different frequencies; the receiver is used for dividing received RF signals into two paths; the signals in two paths mix frequencies with the local oscillation signals and are provided to a base band by lower frequency-change processing to carry out digital signal processing; the transmitter is used for mixing the frequencies of the two paths of base band signals and the local oscillation signals and generates two paths of transmitted RF signals by upper frequency-change processing, and after the two paths of transmitted RF signals are combined into a path, power amplification is carried out. The invention also discloses a method for receiving and transmitting signals in the radio super broadband. By using the transceiver of a direct frequency-change type, compared with the superhet structure of two frequency-change times, the invention can lower the realizing cost of the system and also facilitates realizing the integration of the system on the chip.

Description

technical field [0001] The invention relates to the field of wireless ultra-bandwidth for high-speed short-distance wireless communication, in particular to a transceiver for wireless ultra-bandwidth and a method for sending and receiving signals thereof. Background technique [0002] Wireless ultra wideband (UWB) technology is mainly used to realize short-distance, ultra-high-speed wireless communication, and its transmission distance is generally within 10m at present, and the transmission rate can reach 480M / s or even higher. [0003] The characteristics of UWB's high transmission rate, low power consumption and no interference with existing wireless systems make UWB a hot spot now and in the next five years. It has achieved two major breakthroughs. In terms of spectrum division, it has created a "coexistence" situation; in terms of transmission speed, it has truly moved towards high speed. It increases capacity by increasing bandwidth and becomes an important part of the...

AI Technical Summary

Problems solved by technology

[0006] However, DC-OFDM UWB technology poses challenges to the design of RF transceivers, especially the higher requirements for hardware cost and power consumption, and higher design requirements for frequency hopping schemes

At present, the existing dual-carrier transceiver scheme in China is a superheterodyne structure. This structure adopts a two-time frequency conversion scheme. The implementation cost is relatively high, and it is not convenient for the final chip integration.

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