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Multi-frequency band electronic device and multi-frequency band signal processing method

An electronic device and multi-band technology, applied in the direction of electrical components, automatic power control, etc., can solve the problems of increasing system complexity and cost

Active Publication Date: 2011-06-15
RICHWAVE TECH CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this way, it is bound to increase the complexity and cost of the system

Method used

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  • Multi-frequency band electronic device and multi-frequency band signal processing method
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  • Multi-frequency band electronic device and multi-frequency band signal processing method

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Embodiment Construction

[0058] FIG. 3 is a multi-band electronic device 300 according to an embodiment of the invention. The multi-band electronic device 300 supports transceivers operating in a variety of different frequency bands (for simplicity of description, two frequency bands are taken as examples; for example, 2.4-2.5 GHz, 5.0-6.0 GHz). The multi-band electronic device 300 includes first, second, and third circuit parts 310, 320, 330, a power supply 340, low noise amplifiers 351, 352, power amplifiers 361, 362, switches 353, 354, 363, 364, and mixing Frequency converters 355 and 365, a demodulator 356, a modulator 366, and a baseband processor 370. The first circuit part 310 includes a first voltage controlled oscillator 312, first, third, and fifth switches 314, 316, and 318. The second circuit part 320 includes a second voltage controlled oscillator 322, a second frequency divider 323, and second, fourth, and sixth switches 324, 326, and 328. The third circuit part 330 includes a first fre...

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PUM

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Abstract

The invention provides a multiband electronic device and a multiband signal processing method. The multiband electronic device comprises a first circuit part, a second circuit part and a third circuit part. According to a switching signal, the first circuit and the third circuit selectively form a first phase-locked loop frequency synthesizer, and at the same time the second circuit and the thirdcircuit do not form a phase-locked loop, and the output range of the first phase-locked loop frequency synthesizer is in a first frequency band; or according to the switching signal, the second circuit and the third circuit selectively form a second phase-locked loop frequency synthesizer, and at the same time the first phase-locked loop frequency synthesizer forms a broken circuit, and the output range of the second phase-locked loop frequency synthesizer is in a second frequency band; and the first frequency band and the second frequency band are not completely overlapped.

Description

Technical field [0001] The present invention relates to a phase-locked loop frequency synthesizer, in particular to a multi-band phase-locked loop frequency synthesizer capable of synthesizing required frequencies in multiple frequency bands. Background technique [0002] A phase locked loop is an electronic control system that generates a signal that locks the phase of a reference signal. FIG. 1 is a block diagram of a known phase locked loop 100. The phase locked loop 100 includes a phase detector 110, a loop filter 120, and a voltage controlled oscillator 130. The phase detector 110 may generally be a mixer, which compares the difference in frequency and phase between the reference signal Sref and the output signal Svco of the voltage controlled oscillator 130 and outputs a difference signal to the loop filter 120. The loop filter 120 drives the voltage controlled oscillator 130 according to the difference signal, so that the phase difference between the output signal Svco o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H03L7/18H03L7/08
Inventor 王一峰邓维康
Owner RICHWAVE TECH CORP
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