A wireless communication device with reconfigurable carrier frequency and signal bandwidth

Abstract

The invention discloses wireless telecom equipment with the reconfigurable carrier frequency and the reconfigurable signal bandwidth and relates to the field of wireless communication. The technical key points are that a local oscillator unit of an up-conversion unit in an emitting channel and a local oscillator unit of a down-conversion unit in a receiving channel are chosen as frequency-adjustable local oscillator units, a control unit is utilized to control the signal frequency output by the local oscillator units, accordingly the center carrier frequency of the emitting channel or the receiving channel is adjustable, meanwhile an emitting filter of the emitting channel and a receiving filter of the receiving channel can be replaced in a mechanical installation method to achieve different bandwidth ranges and different center frequency filtering effects, and the signal bandwidth can be changed. Furthermore, the center frequency of the emitting filter and the center frequency of the receiving filter are respectively equal to the local oscillator signal frequency output by the emitting local oscillator unit and the local oscillator signal frequency output by the receiving local oscillator unit.

Description

technical field [0001] The invention relates to the field of wireless communication, in particular to a wireless transmitting and receiving device, wireless transmitting device and wireless receiving device with reconfigurable carrier center frequency and signal bandwidth. Background technique [0002] With the continuous advancement of science and technology, new technologies and applications are constantly emerging in the field of wireless communication. Adjustable carrier center frequency and signal bandwidth have always been one of the key technologies in hop spread spectrum communication technology, anti-jamming radar, dynamic frequency allocation, multi-function transceiver, spurious emission measurement, etc. [0003] In order to fully utilize and integrate various wireless channels and communication standards, the RF front-end needs to work at different frequencies and bandwidths, which requires a reconfigurable RF front-end with both frequency and bandwidth adjustme...

AI Technical Summary

Problems solved by technology

However, the mainstream traditional transceivers have defects that the carrier center frequency and signal bandwidth cannot be reconfigured, such as figure 1

In the prior art, there is a wireless communication device that can support bandwidth reconfiguration, such as figure 2 , the passband filter in the receiving channel and transmitting channel is realized by a filter with adjustable passband range. Such a filter is very expensive, and the value ranges from a few to hundreds of thousands

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