OOK (on-off keying) receiving device with low power consumption

An ultra-low power consumption, receiving device technology, applied in the field of ultra-low power consumption amplitude shift keying receiving devices, can solve the problems of not meeting the requirements of sensitivity, reducing the sensitivity of the system, meaningless receivers, etc., and achieving a simple and clear system structure. , Solve the effect of ultra-low power consumption and improve energy efficiency

Active Publication Date: 2011-08-24
INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI
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AI Technical Summary

Problems solved by technology

Unfortunately, this kind of receiver structure greatly reduces the sensitivity of the system while achieving low power consumption, so that they cannot meet the sensitivity requirements in practical applications; and if you w

Method used

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  • OOK (on-off keying) receiving device with low power consumption
  • OOK (on-off keying) receiving device with low power consumption
  • OOK (on-off keying) receiving device with low power consumption

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Embodiment Construction

[0031] see figure 1 As shown, the present invention provides an ultra-low power consumption OOK receiving device, comprising:

[0032] A radio frequency filter 10, the input end of this radio frequency filter 10 is connected with an antenna, is used for selecting corresponding frequency band, filters out the out-of-band interference signal;

[0033] A current multiplexing quadrature down-mixer 11, whose input is connected to the output end of the radio frequency filter 10, is used to convert the input radio frequency signal into an intermediate frequency signal output; the current multiplexing quadrature down-mixer 11 Consists of a mixer 21 and a mixer 22, their input signals are the same, the local oscillator signals they use for frequency mixing are mutually orthogonal, and the intermediate frequency signals they output are also mutually orthogonal; the current The mixer 21 or mixer 22 in the multiplexing quadrature down-mixer 11 is formed by stacking upper and lower circui...

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Abstract

The invention discloses an OOK (on-off keying) receiving device with low power consumption, which comprises a radio-frequency filter, a lower current multiplexing quadrature mixer, a fully-differential annular oscillator, an image rejection broadband intermediate frequency amplifier, an envelope detector, a high-precision comparator and a digital frequency calibrator, wherein the input end of the radio-frequency filter is connected with an antenna; the input end of the lower current multiplexing quadrature mixer is connected with the output end of the radio-frequency filter; the output end of the fully-differential annular oscillator is connected with the input end of the lower current multiplexing quadrature mixer; the input end of the image rejection broadband intermediate frequency amplifier is connected with the output end of the lower current multiplexing quadrature mixer; the input end of the envelope detector is connected with the output end of the image rejection broadband intermediate frequency amplifier; the input end of the high-precision comparator is connected with the output end of the envelope detector; and the output end of the digital frequency calibrator is connected with the input end of the fully-differential annular oscillator, and the digital frequency calibrator is used for carrying out digital calibration on the output frequency of the fully-differential annular oscillator.

Description

technical field [0001] The invention relates to the technical field of wireless radio frequency receiver chips, in particular to an ultra-low power consumption amplitude shift keying (OOK) receiving device. Background technique [0002] In wireless sensor networks, wireless body area networks and other application fields, wireless receivers undoubtedly play an extremely important role. In these applications, first of all its power consumption must be very low to prolong the service life of the battery, because replacing the battery in many applications is very costly or even almost impossible. It is worth mentioning that in some applications, the tolerance for power consumption is limited to a few hundred microwatts. Secondly, it is required that the radio frequency receiver can be integrated with other analog sensors and digital processors on the same CMOS chip to increase stability and reduce costs. Therefore, it is a key technology to integrate an ultra-low power consum...

Claims

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Application Information

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IPC IPC(8): H04B1/16H04L27/06
Inventor 章琦吴南健
Owner INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI
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