CN102098267A - High-speed low power consumption 16QAM (Quadrature Amplitude Modulation) emitting device - Google Patents
High-speed low power consumption 16QAM (Quadrature Amplitude Modulation) emitting device Download PDFInfo
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- CN102098267A CN102098267A CN2011100250836A CN201110025083A CN102098267A CN 102098267 A CN102098267 A CN 102098267A CN 2011100250836 A CN2011100250836 A CN 2011100250836A CN 201110025083 A CN201110025083 A CN 201110025083A CN 102098267 A CN102098267 A CN 102098267A
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Abstract
The invention discloses a high-speed low power consumption 16QAM (Quadrature Amplitude Modulation) emitting device which comprises a phaselocked loop frequency synthesizer, a four-dividing frequency divider, a first selected four phase gate I, a first selected four phase gate II, a phase demodulator, a variable gain power amplifier and a 16QAM digital demodulator, wherein the output end of the phaselocked loop frequency synthesizer is connected with the input end of the four-dividing frequency divider; the input end of the four-dividing frequency divider is connected with the output end of the phaselocked loop frequency synthesizer; the input end of the first selected four phase gate I is connected with the output end of the four-dividing frequency divider; the input end of the first selected four phase gate II is connected with the output end of the four-dividing frequency divider; the input end of the phase demodulator is respectively connected with the output ends of the first selected four phase gates, the phase demodulator is used for generating a phase demodulated signal and driving the variable gain power amplifier; the input end of the variable gain power amplifier is connected with the output end of the phase demodulator; the variable gain power amplifier is used for generating two different kinds of signal amplitudes and driving an antenna ohm load; and the output end of the 16QAM digital demodulator is respectively connected with the input ends of the first selected four phase gate, the phase demodulator and the variable gain power amplifier, and the 16QAM digital demodulator is used for carrying out serial parallel conversion on serially input baseband data and forming four parallel data required by the 16QAM demodulation.
Description
Technical field
The present invention relates to less radio-frequency transmitter chip technology field, a kind of especially high speed ultra-low power consumption 16 quadrature amplitude modulation (QAM) emitter.
Background technology
In wireless body sensor networks, in the middle of the applications such as medical wireless imaging and medical wireless implantation, transceiver is being played the part of very important role undoubtedly.In these are used, especially very harsh requirement has been proposed transmitting set.At first its power consumption must be hanged down to prolong the useful life of battery very much, will pay very large cost even possible hardly because change batteries in a lot of application scenarios.Secondly, require transmitter to have very high data transfer rate, so that physiologic information in the human body or environmental information are sent to external base station or server with picture format in real time; Once more, when requiring High Data Rate, also require to take the least possible bandwidth resources, i.e. operating factor of highband; And require radio frequency sending set can with other analog sensors, digital processing unit is integrated on the same CMOS chip, with increase stability and reduce the cost.Thereby the radio frequency sending set of integrated high-speed super low-power consumption is a key technology on CMOS technology.
Traditional QAM radio frequency sending set is almost all based on I/Q two-way up-conversion structure, I/Q two-way analog baseband signal respectively with mutually orthogonal local oscillation signal mixing mutually, upconvert to the I/Q radiofrequency signal, again I/Q two-way radiofrequency signal is superposeed, launch by power amplifier and antenna then.It is more natural that such transmitter implements idea, but need the digital/analog signal transducer (DAC) of big power consumption, low pass filter (LPF) and frequency mixer (Mixer), but also need the I/Q two-way, thus make that the power consumption of emission system is considerable.Therefore the transmitter of I/Q two-way up-conversion structure is not suitable for the application scenario of extremely low power dissipation.Do not matched owing to the I/Q two-way simultaneously, the influence of ghost effect, its emission rate is limited, can can't accept otherwise launch vector error (EVM), thereby traditional transmitter architecture can't satisfy the requirement of high speed ultra-low power consumption.
Summary of the invention
Main purpose of the present invention is to provide a kind of high speed ultra-low power consumption 16QAM emitter, guaranteeing High Data Rate, in the time of high bandwidth utilization, can realize the 16QAM modulate emission of super low-power consumption.Make it can be applicable to wireless body sensor networks, in the occasion that super low-power consumptions such as medical wireless imaging and medical wireless implantation are used.
The invention provides a kind of high speed ultra-low power consumption 16QAM emitter, comprising:
One phase-locked loop frequency integrator, the output of this phase-locked loop frequency integrator is connected with the input that removes four-divider, is used to produce the radio-frequency carrier signal of frequency stabilization;
One removes four-divider, and the input that should remove four-divider is connected with the output of phase-locked loop frequency integrator, is used to produce 16QAM and modulates needed eight kinds of phase places;
One or four select a phase place gate, and this four input that selects a phase place gate is connected with the output that removes four-divider, be used for gating organize more input signal a road to exporting;
One or four select a phase place gate, and this four input that selects a phase place gate is connected with the output that removes four-divider, be used for gating organize more input signal a road to exporting;
Phase-modulator, the input of this phase-modulator select the output of a phase place gate to be connected with four respectively, are used to produce the phase place modulated signal, and drive the variable-gain power amplifier;
The variable-gain power amplifier, the input of this variable-gain power amplifier is connected with the output of phase-modulator, is used to produce two kinds of different signal amplitudes and driven antenna ohm load;
The 16QAM digital modulator, the output of this 16QAM digital modulator selects a phase place gate with four respectively, phase-modulator, and the input of variable-gain power amplifier is connected, be used for the base band data of serial input being gone here and there and changing, form 16QAM and modulate needed four parallel-by-bit data.
The wherein said four-divider that removes is made of the end to end latch of level Four.
The wherein said four-divider that removes is very accurately to produce eight kinds of phase signals, is not subjected to the influence of semiconductor process variation, temperature etc., and also auxiliary without any need for the phase alignment circuit has the high-precision characteristic of super low-power consumption.
Wherein said four select a phase place gate, are made of four transmission gates and four buffer amplifiers and digitial controller.
Wherein said four select a phase place gate, and lossless ground gating wherein one the tunnel is input to output, and is reduced to other three tunnel leakages that are input to output minimum.
Wherein said phase-modulator is made of a plurality of transistors, a current source and an inverter, output can produce with two-way input in a road synchronous signal.
Wherein said 16QAM digital modulator, changeing the binary code transducer by deserializer and Gray code forms, can convert the base band data of serial input to parallel four figures certificate, this four figures is exported three phase control signals and an amplitude control signal according to change the conversion of binary code transducer through Gray code.
From technique scheme as can be seen, the present invention has following beneficial effect:
1. radio frequency sending set provided by the invention, but all circuit single-chips are integrated, and can realize that system configuration is simple and clear with standard CMOS process, and transmitter has saved the DAC of big power consumption, and LPF and Mixer have solved the super low-power consumption problem in the related application; Transmitter adopts the 16QAM modulation system, has improved band efficiency and antijamming capability.
2. radio frequency sending set provided by the invention, utilize except that four-divider accurately produces 16QAM and modulate needed eight kinds of phase places, be not subjected to the influence of semiconductor process variation, temperature etc., also auxiliary without any need for the phase alignment circuit has the high-precision characteristics of super low-power consumption.
3. radio frequency sending set provided by the invention, utilize four to select a phase selector and phase-modulator, cooperate the 16QAM digital modulator again, convenient and realized phase modulated efficiently, the implementation of half word large-signal like this, make the quality that transmits not be subjected to the influence of analog circuit offset, thereby can realize very high emission rate, solved the High Data Rate problem in the related application.
4. high speed ultra-low power consumption radio frequency sending set provided by the invention is particularly suitable for wireless body sensor networks, transceiver applications such as medical wireless imaging and medical wireless implantation.
Description of drawings
For making the purpose, technical solutions and advantages of the present invention clearer, below in conjunction with specific embodiment, and with reference to accompanying drawing, the present invention is described in more detail, wherein:
Fig. 1 is the system block diagram of a kind of high speed ultra-low power consumption 16QAM emitter provided by the invention;
Fig. 2 is the subsystem diagram that removes four-divider 11 provided by the invention;
Fig. 3 is provided by the invention four subsystem diagrams that select a phase place gate 12;
Fig. 4 is provided by the invention four subsystem diagrams that select a phase place gate 13;
Fig. 5 is the subsystem diagram of phase-modulator 14 provided by the invention;
Fig. 6 is the subsystem diagram of 16QAM digital modulator 16 provided by the invention;
Embodiment
See also shown in Figure 1ly, high speed ultra-low power consumption 16QAM emitter provided by the invention comprises:
One phase-locked loop frequency integrator 10, the output of this phase-locked loop frequency integrator 10 is connected with the input that removes four-divider 11, is used to produce the radio-frequency carrier signal of frequency stabilization;
One removes four-divider 11, and the input that should remove four-divider 11 is connected with the output of phase-locked loop frequency integrator 10, is used to produce 16QAM and modulates needed eight kinds of phase places; The wherein said four-divider 11 that removes is made of the end to end latch 110,111,112,113 of level Four; Its described four-divider 11 that removes can very accurately produce eight kinds of phase signals, is not subjected to the influence of semiconductor process variation, temperature etc., and also auxiliary without any need for the phase alignment circuit has the high-precision characteristic of super low-power consumption;
One or four select a phase place gate 12, and this four input that selects a phase place gate 12 is connected with the output that removes four-divider 11, be used for gating four input signal P0, P45, P90, P135 a road to exporting; Wherein said four select a phase place gate 12, are made of 120,121,122,123 and four buffer amplifiers 124,125,126,127 of four transmission gates and digitial controller 128; Wherein said four select a phase place gate 12, and gating wherein one the tunnel is input to output almost losslessly, and is reduced to other three tunnel leakages that are input to output minimum;
One or four select a phase place gate 13, and this four input that selects a phase place gate 13 is connected with the output that removes four-divider 11, be used for gating four input signal P180, P225, P270, P315 a road to exporting; Wherein said four select a phase place gate 13, are made of 130,131,132,133 and four buffer amplifiers 134,135,136,137 of four transmission gates and digitial controller 138; Wherein said four select a phase place gate 13, and gating wherein one the tunnel is input to output almost losslessly, and is reduced to other three tunnel leakages that are input to output minimum;
Phase-modulator 14, the input of this phase-modulator 14 select the output of a phase place gate 12,13 to connect with four respectively, are used to produce the phase place modulated signal, and drive the variable-gain power amplifier; Its described phase-modulator 14, by transistor MN1-MN9, MP1-MP5, a current source 141 and an inverter 140 constitute, output can produce with the two-way input in a road synchronous signal.
Variable-gain power amplifier 15, the input of this variable-gain power amplifier 15 is connected with the output of phase-modulator 14, is used to produce two kinds of different signal amplitudes and driven antenna 50 ohm load;
16QAM digital modulator 16, the output of this 16QAM digital modulator 16 selects a phase place gate 12,13 with four respectively, phase-modulator 14, the input of variable-gain power amplifier 15 is connected, be used for the base band data of serial input being gone here and there and changing, form 16QAM and modulate needed four parallel-by-bit data; Described 16QAM digital modulator 16 changes binary code transducer 151 by deserializer 150 and Gray code and forms; Can convert the base band data of serial input to parallel four figures certificate, this four figures is exported three phase control signals and an amplitude control signal according to change 151 conversion of binary code transducer through Gray code.
Above-described system block diagram and enforcement circuit diagram; to purpose of the present invention; technical scheme and beneficial effect further describe; institute is understood that; the above is specific embodiments of the invention only, is not limited to the present invention, and is within the spirit and principles in the present invention all; any modification of being made, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (7)
1. high speed ultra-low power consumption 16QAM emitter comprises:
One phase-locked loop frequency integrator, the output of this phase-locked loop frequency integrator is connected with the input that removes four-divider, is used to produce the radio-frequency carrier signal of frequency stabilization;
One removes four-divider, and the input that should remove four-divider is connected with the output of phase-locked loop frequency integrator, is used to produce 16QAM and modulates needed eight kinds of phase places;
One or four select a phase place gate, and this four input that selects a phase place gate is connected with the output that removes four-divider, be used for gating organize more input signal a road to exporting;
One or four select a phase place gate, and this four input that selects a phase place gate is connected with the output that removes four-divider, be used for gating organize more input signal a road to exporting;
One phase-modulator, the input of this phase-modulator select the output of a phase place gate to be connected with four respectively, are used to produce the phase place modulated signal, and drive the variable-gain power amplifier;
One variable-gain power amplifier, the input of this variable-gain power amplifier is connected with the output of phase-modulator, is used to produce two kinds of different signal amplitudes and driven antenna ohm load;
One 16QAM digital modulator, the output of this 16QAM digital modulator selects a phase place gate with four respectively, phase-modulator, the input of variable-gain power amplifier is connected, be used for the base band data of serial input being gone here and there and changing, form 16QAM and modulate needed four parallel-by-bit data.
2. high speed ultra-low power consumption 16QAM emitter according to claim 1, the wherein said four-divider that removes is made of the end to end latch of level Four.
3. high speed ultra-low power consumption 16QAM emitter according to claim 2, the wherein said four-divider that removes is very accurately to produce eight kinds of phase signals, be not subjected to the influence of semiconductor process variation, temperature etc., also auxiliary without any need for the phase alignment circuit has the high-precision characteristic of super low-power consumption.
4. high speed ultra-low power consumption 16QAM emitter according to claim 1, wherein said four select a phase place gate, are made of four transmission gates and four buffer amplifiers and digitial controller.
5. high speed ultra-low power consumption 16QAM emitter according to claim 4, wherein said four select a phase place gate, and lossless ground gating wherein one the tunnel is input to output, and is reduced to other three tunnel leakages that are input to output minimum.
6. high speed ultra-low power consumption 16QAM emitter according to claim 1, wherein said phase-modulator is made of a plurality of transistors, a current source and an inverter, output can produce with two-way input in a road synchronous signal.
7. high speed ultra-low power consumption 16QAM emitter according to claim 1, wherein said 16QAM digital modulator, changeing the binary code transducer by deserializer and Gray code forms, can convert the base band data of serial input to parallel four figures certificate, this four figures is exported three phase control signals and an amplitude control signal according to change the conversion of binary code transducer through Gray code.
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| CN201110025083.6A CN102098267B (en) | 2011-01-24 | 2011-01-24 | High-speed low power consumption 16QAM (Quadrature Amplitude Modulation) emitting device |
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| CN201110025083.6A CN102098267B (en) | 2011-01-24 | 2011-01-24 | High-speed low power consumption 16QAM (Quadrature Amplitude Modulation) emitting device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103716059A (en) * | 2012-06-11 | 2014-04-09 | Nxp股份有限公司 | Transmitter |
| CN106059683A (en) * | 2016-07-06 | 2016-10-26 | 华南理工大学 | Signal transmission device, signal transmission method, communication device and signal processing device |
| CN108336999A (en) * | 2017-12-22 | 2018-07-27 | 中国电子科技集团公司第二十二研究所 | Map determination method, apparatus, storage medium and the electronic device of output valve |
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| WO2001039454A1 (en) * | 1999-11-23 | 2001-05-31 | Thomson Licensing S.A. | A hierarchical qam transmission system with varying grouping factor |
| CN1459178A (en) * | 2000-04-17 | 2003-11-26 | 爱特梅尔股份有限公司 | Direct digital synthesis in QAM demodulator |
| CN1649339A (en) * | 2005-01-26 | 2005-08-03 | 清华大学 | Pi/2 phase shift non-square M-QAM modulation and demodulation method and its system |
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2011
- 2011-01-24 CN CN201110025083.6A patent/CN102098267B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2001039454A1 (en) * | 1999-11-23 | 2001-05-31 | Thomson Licensing S.A. | A hierarchical qam transmission system with varying grouping factor |
| CN1459178A (en) * | 2000-04-17 | 2003-11-26 | 爱特梅尔股份有限公司 | Direct digital synthesis in QAM demodulator |
| CN1649339A (en) * | 2005-01-26 | 2005-08-03 | 清华大学 | Pi/2 phase shift non-square M-QAM modulation and demodulation method and its system |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103716059A (en) * | 2012-06-11 | 2014-04-09 | Nxp股份有限公司 | Transmitter |
| CN103716059B (en) * | 2012-06-11 | 2015-09-09 | Nxp股份有限公司 | Transmitter |
| US9306690B2 (en) | 2012-06-11 | 2016-04-05 | Samba Holdco Netherlands B.V. | Transmitter |
| CN106059683A (en) * | 2016-07-06 | 2016-10-26 | 华南理工大学 | Signal transmission device, signal transmission method, communication device and signal processing device |
| CN106059683B (en) * | 2016-07-06 | 2017-05-03 | 华南理工大学 | Pulse-modulated signal transmitting device and method, communication device and signal processing device |
| CN108336999A (en) * | 2017-12-22 | 2018-07-27 | 中国电子科技集团公司第二十二研究所 | Map determination method, apparatus, storage medium and the electronic device of output valve |
| CN108336999B (en) * | 2017-12-22 | 2021-08-06 | 中国电子科技集团公司第二十二研究所 | Method and device for determining mapping output value, storage medium and electronic device |
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| CN102098267B (en) | 2014-06-25 |
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