Multi-standard performance-reconfigurable I/Q carrier generator

Abstract

The invention discloses a multi-standard performance-reconfigurable I / Q carrier generator. Through reasonable frequency allocation, the generator can output I / Q carriers continuously covering the range from 0.1 GHz to 5 GHz and output differential signals continuously covering the range from 5 GHz to 10 GHz and the range from 1.5 GHz to 3 GHz; meanwhile, by arranging a programmable charge pump (102), a loop filter (103), a multi-path voltage-controlled oscillator (104), a first multiplexer (105) corresponding to the multi-path voltage-controlled oscillator (104), a five-stage two divided-frequency link (109), a second multiplexer (110) corresponding to the five-stage two divided-frequency link (109) and a third multiplexer (112), carrier signals of various frequencies with different loop bandwidths, different levels of phase noise, different power consumption levels and different locking times can be generated, and thus multi-standard performance-reconfigurable I / Q carriers can be generated.

Description

technical field [0001] The present invention relates to the technical field of radio frequency wireless transceivers in wireless communication applications, in particular to a reconfigurable I / Q quadrature carrier generator with multi-standard performance. The generator is based on a fractional frequency division structure and can generate 0.1-5GHz continuous Covered I / Q carrier output and differential signal output with continuous coverage of 5-10GHz and 1.5-3GHz. Background technique [0002] The frequency synthesizer is an important part of the wireless transceiver. It provides the local oscillator signal for the transceiver. Its performance directly determines the performance level of the transceiver system, and its power consumption often accounts for a large part of the overall power consumption of the transceiver. proportion. In recent years, with the continuous advancement of wireless communication technology, more and more transceivers are developing towards multi-...

AI Technical Summary

Problems solved by technology

As a key component of a transceiver, the frequency synthesizer in this type of transceiver system needs to provide a very wide frequency range of local oscillator signals, and different communication standards require different locking time and phase noise performance. If multiple frequencies are used to synthesize implement separately, it will often complicate the system, and the cost will be difficult to control

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