Multistandard I/Q (In-Phase/Quadrature-Phase) carrier generating device based on fractional frequency-dividing frequency synthesizer

A technology of frequency synthesizer and orthogonal carrier, applied in automatic power control, electrical components, etc., can solve the problems of non-continuous frequency coverage, stability degradation, and insufficient switching speed, etc., to achieve fast frequency hopping and reduce lock-in the effect of time

CN102122955AActive Publication Date: 2011-07-13INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2011-07-13

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Abstract

The invention discloses a multistandard I / Q (In-Phase / Quadrature-Phase) carrier generating device based on a fractional frequency-dividing frequency synthesizer. The device comprises a three-order differential loop filter (10), a preset module (11), a full-differential quadrature voltage-controlled oscillator (12), a switch type bumper (13), a continuous two-dividing frequency divider module (14), a multimode frequency divider (15), a frequency and phase discriminator / charge pump (16), a nonvolatile memory (17) and a digital processor (18). By utilizing the invention, the frequency can continuously cover the range from 0.7GHz to 6GHz by reasonable frequency distribution, and the rapid frequency hopping is realized by presetting the frequency by the digital processor with strong function.
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Description

technical field

[0001] The present invention relates to the technical field of communication-based phase-locked loop frequency synthesizers, in particular to a multi-standard I / Q quadrature carrier generation device based on a fractional frequency division frequency synthesizer, which is a multi-standard I / Q quadrature carrier The generating device is based on a fractional frequency-division phase-locked loop frequency synthesizer, continuously covers a frequency range of 0.7GHz to 6GHz, and can meet all communication standards with a frequency lower than 6GHz. Background technique

[0002] The phase-locked loop frequency synthesis device is a high-stability and high-precision frequency synthesis device, which is widely used in various fields of radio such as modern communication, radar, electronic countermeasures and modern instrumentation. Frequency generating devices based on phase-locked loop frequency synthesizers are widely used in various communication transceivers. ...

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Embodiment Construction

[0036] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0037] Such as figure 1 as shown, figure 1 The block diagram of the multi-standard I / Q quadrature carrier generation device based on the fractional frequency division frequency synthesizer provided by the present invention, the multi-standard I / Q quadrature carrier generation device includes: a third-order differential loop filter 10, a preset Module 11, fully differential quadrature voltage-controlled oscillator 12, switch buffer 13, continuous division by 2 frequency divider module 14, multimode frequency divider 15, frequency detector / phase detector / charge pump 16, non-volatile memory 17 and digital processor 18.

[0038] 1, 2, and 3 in the fully differential quadrature voltage-controlled oscillator 12 work i...