KR101331917B1 - Demodulating apparatus, demodulating ic and modem ic in using the same - Google Patents

Abstract

A demodulating device according to the present invention comprises a spin device to output oscillating signals; a phase control part which gives predetermined phase tuning properties to the spin device to tune an oscillating signal to a modulated signal inputted into the spin device; and a detector to restore information contained in the oscillating signal by demodulating the oscillating signal from the spin device. [Reference numerals] (200) Phase control part;(300) Detector

Description

Demodulation device, demodulation integrated device and demodulation integrated device using the same

The present invention relates to a demodulation device, a demodulation integrated device and a demodulation integrated device using the same, and more particularly, a demodulation device capable of demodulating various modulated signals using the phase tuning characteristics of a spin device, a demodulation integrated device and a demodulation integrated using the same. It relates to an element.

Conventional communication systems use electronic circuitry to demodulate amplitude modulated or frequency modulated radio signals.

For example, in the multi-mode wireless transmission system introduced in Korean Patent Application No. 10-1999-0007404, the functions that can be commonly used in each communication method are shared as a common modulation and demodulation function, and the other functions in each communication method are different. As a modulation / demodulation function, an electronic circuit provided separately for each communication method can be configured to perform multi-mode wireless communication.

In addition, the wireless communication system introduced in Korean Patent Application No. 10-2006-7000266 and a wireless digital receiver for use in the system have a base station downconverts the signal to a low frequency signal, oversamples the signal, and then An electronic circuit for demodulating is configured, and the mobile station converts the signal into a low frequency signal, undersamples the signal, and then configures an electronic circuit for demodulating the radio signal to perform wireless communication using different demodulation digital circuits.

1 is a block diagram of a conventional electronic circuit ASK wireless receiver.

Referring to FIG. 1, a direct conversion wireless communication device based on a conventional electronic circuit includes a VCO 40, a PLL frequency fixed circuit 50, an RF switch 10, a mixer 20, and a band pass filter 30. ). Therefore, there is a problem in that the size of the product is large, the power consumption is high, the parts are expensive, and the low speed communication method of narrowband operation obtained through the additional use of the filter has a problem in that high speed communication is limited.

The present invention has been invented to solve the above problems, and various modulation signals of amplitude phase keying (ASK) and frequency shift keying (FSK) using the phase tuning characteristic of the spin element. The present invention provides a demodulation device capable of demodulating and detecting a harmonic wave by monitoring an amplitude of a fundamental wave, and a demodulation integrated device and a demodulation integrated device using the same.

In order to achieve the above object, a demodulation device according to the present invention includes a spin element for outputting an oscillation signal; A phase control unit for imparting a predetermined phase tuning characteristic to the spin element so that the oscillation signal is synchronized with a modulation signal input to the spin element; And a detector for demodulating the oscillation signal tuned to the modulated signal output from the spin element, and restoring information contained in the oscillation signal.

The phase control unit may include a current generator for applying a predetermined current to the spin element to impart phase tuning characteristics to the spin element.

The phase control unit may further include a magnetic field generator for applying a predetermined magnetic field to the spin element to impart phase tuning characteristics to the spin element together with the current generator.

The apparatus may further include a magnetic field sensing unit sensing a magnetic field applied by the magnetic field generating unit.

The apparatus may further include a temperature compensating unit configured to sense a temperature of the spin element and correct a characteristic change according to a sensing temperature.

In addition, the modulated signal is received from an antenna, and further comprises a first amplifier provided between the antenna and the spin element for amplifying the modulated signal.

The apparatus may further include a second amplifier provided at a rear end of the spin element to amplify the oscillation signal.

Further, when receiving the input frequency f ₀ of the modulated signal, the spin device, and outputs the frequency by recognizing the modulation signal into a second harmonic signal f _0/2, the phase sync signal.

The spin element may include a plurality of spin elements respectively outputting a phase tuning signal tuned to a specific frequency among input modulation signals, and the phase control unit includes a plurality of phase control units corresponding to each of the plurality of spin elements. Each of the phase controllers synchronizes an oscillation signal output from each of the plurality of spin elements to a modulation signal input to each of the plurality of spin elements.

The detector may include a plurality of detectors corresponding to each of the plurality of spin elements, and each of the detectors demodulates a phase tuning signal output from each of the plurality of spin elements to restore information on the phase tuning signal. .

In addition, each of the modulated signals are received from an antenna, a plurality of first amplifiers provided between the antenna and each of the plurality of spin elements to amplify each of the modulated signals; And a plurality of second amplifiers provided at rear ends of the plurality of spin elements to amplify each of the phase tuning signals.

Each of the plurality of phase controllers may include a current generator for applying a predetermined current to a corresponding spin element to impart phase tuning characteristics to the spin element; And a magnetic field generator for applying a predetermined magnetic field to the spin element to impart phase tuning characteristics to the spin element together with the current generator.

In addition, a plurality of magnetic field sensing unit for sensing a magnetic field applied from each of the magnetic field generating unit; And a temperature compensating unit configured to sense temperatures of a plurality of the spin elements and to correct characteristic changes according to sensing temperatures.

In addition, the demodulation integrated device according to the present invention includes a substrate; A plurality of spin elements configured to output an oscillation signal by driving power from an electrode provided on the substrate; A phase control unit to impart a predetermined phase tuning characteristic to each of the spin elements so that the oscillation signal is synchronized with a modulation signal input to the spin element; And a detector for demodulating the oscillation signal tuned to the modulation signal output from each of the spin elements to restore the information contained in the oscillation signal.

The phase control unit may include a current generation unit disposed between the electrode and the plurality of spin elements to generate and distribute a current that imparts a predetermined phase tuning characteristic to each of the spin elements.

The phase control unit may further include a plurality of magnetic field generating units respectively provided on the spin element to apply a predetermined magnetic field to the spin element to impart phase tuning characteristics to the spin element.

The apparatus may further include a current distribution unit disposed between the electrode and the plurality of magnetic field generators to distribute and supply current to generate a magnetic field in each of the magnetic field generators.

The apparatus may further include a temperature compensating unit configured to sense a temperature of each of the spin elements to correct a characteristic change according to a sensing temperature.

In addition, the modulation and demodulation integrated device according to the present invention includes a substrate; A modulation unit provided on the substrate to transmit a modulation signal; And a demodulator provided on the substrate to receive the modulated signal, wherein the demodulator comprises: a plurality of spin elements configured to output an oscillation signal; A phase control unit to impart a predetermined phase tuning characteristic to each of the spin elements so that the oscillation signal is synchronized with a modulation signal input to the spin element; And a detector for demodulating the oscillation signal tuned to the modulation signal output from each of the spin elements to restore the information contained in the oscillation signal.

The apparatus may further include a power distribution unit that distributes power to the modulator and the demodulator.

The apparatus may further include a power controller configured to control an output channel of the power divider to turn on / off at least one of the modulator and the demodulator.

The apparatus may further include a shielding film provided in at least one of the modulator and the demodulator to prevent the characteristic of the electric signal flowing through the demodulator from being changed by the surrounding environment.

The apparatus may further include a temperature compensating unit configured to sense a temperature of each of the spin elements to correct a characteristic change according to a sensing temperature.

The demodulation device according to the present invention can demodulate a modulated signal by using a phase tuning characteristic of a spin element (STO). The demodulation device demodulates an amplitude phase modulated signal using one STO, or a plurality of STOs having different fundamental frequencies. There is an effect that can demodulate the frequency phase modulated signal.

In addition, according to the present invention, it can be fixed at the required frequency without the PLL circuit, can replace the reception function without the RF switch, mixer, and band pass filter, and the high speed communication with the operation characteristic of the fast settling time of the STO There is a possible effect.

In addition, according to the present invention, it is possible to implement a low-cost low-power demodulation device and a micro IC using an STO that is easy to integrate at a nano size while enabling low power operation.

In addition, according to the present invention, there is an effect capable of detecting by monitoring the amplitude of the fundamental wave to determine whether the harmonics are introduced.

1 is a block diagram of a conventional electronic circuit ASK wireless receiver.
2 is a first configuration diagram of a demodulation device according to a first embodiment of the present invention.
3 is a second configuration diagram of a demodulation device according to a first embodiment of the present invention.
4 is a third configuration diagram of a demodulation device according to the first embodiment of the present invention.
5 is a fourth configuration diagram of a demodulation device according to the first embodiment of the present invention.
6 is a fifth configuration diagram of a demodulation device according to the first embodiment of the present invention.
7 is a sixth configuration diagram of a demodulation device according to a first embodiment of the present invention.
8 is a seventh configuration diagram of a demodulation device according to the first embodiment of the present invention.
9 is a first configuration diagram of a demodulation device according to a second embodiment of the present invention.
10 is a second configuration diagram of a demodulation device according to a second embodiment of the present invention.
11 is a third configuration diagram of a demodulation device according to a second embodiment of the present invention.
12 is a block diagram showing a demodulation integrated device according to an embodiment of the present invention.
13 is a schematic perspective view of a demodulation integrated device according to an embodiment of the present invention.
FIG. 14 is a partially enlarged view of AA ′ // BB ′ // CC ′ // DD ′ of FIG. 13.
15 is a first configuration diagram of a modulation / modulation integrated device according to an embodiment of the present invention.
16 is a second configuration diagram of a modulation / modulation integrated device according to an embodiment of the present invention.
17 is a third configuration diagram of a demodulation integrated device according to an embodiment of the present invention.
18 is a fourth configuration diagram of a demodulation integrated device according to an exemplary embodiment of the present invention.
19 is a schematic perspective view of a modulation and demodulation integrated device according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. First, it should be noted that the same components or parts among the drawings denote the same reference numerals whenever possible. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted so as not to obscure the subject matter of the present invention.

2 to 8 are views showing various configuration examples of the demodulation device according to the first embodiment of the present invention.

Referring to FIG. 2, a demodulation device according to a first embodiment of the present invention includes a spin element 100 that receives a modulated signal and outputs an oscillation signal, and a phase control unit that imparts a predetermined phase tuning characteristic to the spin element 100. And a detector 300 for demodulating the oscillation signal output from the spin element 100.

The phase controller 200 may cause the oscillation signal to be synchronized with a modulation signal input to the spin element 100.

When the predetermined phase tuning characteristic is given by the phase controller 200, the spin device 100 may output a phase tuning signal synchronized with the frequency of the modulation signal as an oscillation signal. Specifically, the spin device 100 may be composed of a spin torque oscillator (hereinafter referred to as STO). The STO 100 may output an oscillation signal tuned to an input modulation signal according to a predetermined phase tuning characteristic provided by the phase control unit 200. That is, the STO may output a fundamental wave and harmonic signals such as 2nd, 3rd, and 4th orders.

Here, the STO may be composed of nano-pillar type STO, nano-contact type STO, magnetic domain wall type STO, Vortex type STO and the like.

The phase tuning characteristic is a modulation signal. When a frequency, such as the fundamental wave or the second harmonic frequency of the STO 100 is input to the STO, the fundamental frequency output from the STO 100 is tuned to the input frequency and outputted to the output. It means the characteristic that appears.

The STO 100 has a function of frequency shift and amplitude increase during phase tuning to improve low output level and undesired phase noise characteristics, which are characteristics of the STO oscillation frequency. It can be fixed at the phase noise frequency. Therefore, it can replace the functions of the VCO, PLL frequency fixed circuit, RF switch, mixer, and band pass filter used in the conventional wireless communication device.

In other words, in the general receiver, a mixer is used to lower the carrier to a frequency that is easy to detect, and the STO outputs a signal corresponding to a high frequency of f ₀ while the carrier nf ₀ (where n is an integer greater than or equal to 2) passes downward. Since the conversion (down conversion) is performed, there is an effect that can replace the function of the mixer.

Here, f ₀ is a frequency of a carrier wave input to the demodulator, and is a frequency containing demodulation, that is, information to be reproduced or recovered.

It said spin element 100 may, for example, the frequency can, if receiving the modulated signal f ₀ of the recognition of the modulation signal to the secondary harmonic frequency signal to the output f _0/2, the phase sync signal.

Specifically, when the input the f ₀ signal to be transmitted to the air in the phase tuning characteristics given STO, the STO recognizes the f ₀ signal to the second harmonic signal to be phase synchronized to f _0/2 signal to the main signal may be, it is possible to obtain the f _0/2 signal is a half of the f ₀ frequency is obtained through the airwaves as a result from the STO signal. Here, there is a case where it is determined that the the f ₀ frequency signal is amplitude and phase modulated transmission over-the-air (referred to as amplitude shift keying, hereinafter, ASK) signal ASK-modulated by f _0/2 signal via the phase-tuning process of the STO can be obtained.

As described above, it is possible to determine whether harmonics are introduced using the characteristics of the spin device 100.

For example, if the output (A × C) sin2πf ₀ t signal by the input of the modulation signal in which the STO is transmitted to the air for outputting Asin2πf ₀ t signal to the main signal, the high amplitudes in the f ₀ frequency (A × C), the modulated signal input to the STO is a microwave corresponding to a harmonic signal, for example, Bsin2πmf ₀ t (where m is a real multiple of the fundamental wave f ₀ ) or Bsin2πnf ₀ t (where n is the fundamental An integer multiple of 2 or _greater of wave f ₀ ) can be determined.

The detector 300 may demodulate an oscillation signal tuned to the modulation signal output from the spin element 100 to restore the information contained in the oscillation signal.

Specifically, the detector 300 may be an envelope detector using a half-wave rectifier circuit of the diode, wherein the detector 300 monitors the amplitude of the oscillation signal output from the spin device 100 to monitor the amplitude of the spin device. It is possible to determine whether the harmonic signal is introduced into the modulation signal at 100.

That is, the detector 300 monitors the amplitude (A × C) of the (A × C) sin ₂ π f ₀ t signal outputted by the STO by the input of the modulated signal, so that the Bsin ₂ π mf ₀ t (corresponding to the harmonic signal with the modulated signal). here, m is a real number multiple of the fundamental frequency f ₀₎ or Bsin2πmf t ₀ (where, n can be determined whether the inlet of the fundamental wave of 2 or more integer multiples of f _0).

Referring to FIG. 3, the phase controller 200 may include a current generator 210 to impart a predetermined phase tuning characteristic to the spin device 100.

The current generator 210 may apply a predetermined current to the spin device 100 to impart phase tuning characteristics to the spin device 100 so that the spin device 100 outputs the phase tuning signal. Here, the current generator 210 may be formed of a constant current circuit or a constant voltage circuit to apply a predetermined current to the spin element 100.

Referring to FIG. 4, the phase controller 200 may further include a magnetic field generator 220 to impart a predetermined phase tuning characteristic to the spin device 100.

The magnetic field generator 220 may apply a predetermined magnetic field to the spin element 100 to impart phase tuning characteristics to the spin element 100 together with the current generator 210. 220 may control the frequency of the phase tuning signal by generating an effective magnetic field capable of changing the characteristics of the STO.

Here, when the magnetic field generating unit 220 is, for example, hard disk media, the present invention may further include a reference oscillator for outputting a reference frequency f ₀ , although not shown in the drawing. It may read the magnetic pattern information of the hard disk medium by using the amplitude or frequency variation of f _0/2 signal as a hard disk head for detecting a magnetic pattern of the hard disk media.

Referring to FIG. 5, the demodulation device according to the first embodiment of the present invention further includes a magnetic field sensing unit 400 for sensing a magnetic field applied by the magnetic field generator 220 and controlling a frequency change of the phase tuning signal. can do. The frequency of the phase tuning signal output from the spin device 100 is controlled by the applied current and the strength of the magnetic field, and the magnetic field sensing unit 400 is additionally applied externally in addition to the magnetic field applied by the magnetic field generating unit 220. When the magnetic field is detected, the frequency change of the phase tuning signal may be controlled by controlling the strength of the current applied by the current generator 210 to be weaker than before.

The magnetic field sensing unit 400 may include a Hall sensor, a magnetoresistive sensor (GMR sensor, TMR sensor), etc. to measure the strength of the magnetic field applied to the spin element 100.

Meanwhile, when the temperature sensed by the spin element 100 and the intensity of the current applied to the spin element 100 are constant, the spin element 100 has a frequency that is the precession speed of the spin as the intensity of the magnetic field increases. As it becomes larger and larger, when detecting the frequency generated by the spin element 100, the magnetic field applied by the magnetic field generator 220 may be detected. Therefore, the magnetic field sensing unit 400 can be omitted in the present invention.

Referring to FIG. 6, the demodulation device according to the first embodiment of the present invention may further include a temperature compensator 500 for sensing a temperature of the spin element 100 and correcting a characteristic change according to a sensed temperature. . Specifically, the temperature compensator 500 may correct the temperature characteristic change of the spin element 100 by a correction method as a function of temperature.

The amplitude a of the phase tuning signal output from the spin element 100 increases as the temperature rises. When the temperature sensed by the spin element 100 is higher than the reference temperature, a correction constant b < Multiply amplitude by 1) and multiply amplitude by correction constant (b> 1) which increases amplitude when the detected temperature is lower than the reference temperature, and correct the characteristic change according to the detected temperature by keeping the amplitude of the phase tuning signal constant can do. To this end, the temperature compensator 500 may be composed of a temperature sensor for sensing the temperature of the spin element 100, and a temperature compensation circuit for correcting the characteristic change according to the temperature of the spin element 100.

On the other hand, the temperature sensor included in the temperature compensation unit 500 can be omitted. That is, since the resistance of the spin device 100 is proportional to the inverse of the temperature, the temperature of the spin device 100 can be measured using this. For example, when the current is measured by applying a voltage to the spin device 100, or when the voltage is measured by applying a current to the spin device 100, the resistance of the spin device 100 according to Ohm's law is measured. Since this may be calculated, the temperature of the spin element 100 may be measured using the resistance. In this case, the structure of the temperature compensation unit 500 may be simplified and the manufacturing process may be reduced.

Referring to FIG. 7, the demodulation device according to the first embodiment of the present invention may further include an antenna 600 for receiving a modulated signal and a first amplifier 700 for amplifying the modulated signal.

The antenna 600 may receive a modulated signal transmitted through airwaves, where the modulated signal may be a signal that is amplitude-phase modulated and transmitted. As such, in the present invention, a source of microwaves injected into the spin element 100 may be obtained from the antenna 600.

The first amplifier 700 may be a low noise amplifier installed between the antenna 600 and the spin device 100.

In general, since the modulation signal received through the antenna 600 is weak, the first amplifier functions to amplify the modulation signal.

Referring to FIG. 8, the demodulation device according to the first embodiment of the present invention may further include a second amplifier 800 for amplifying the oscillation signal.

The second amplifier 800 may be a variable amplifier installed at a rear end of the spin element 100. The second amplifier 800 acts to amplify the oscillation signal when the amplitude of the oscillation signal is smaller than the sensitivity that the detector 300 can detect.

In the present invention, the first amplifier 700 and the second amplifier 800 may be provided for remote wireless communication.

Meanwhile, in short-range wireless communication, the strength of the modulation signal received through the antenna 600 may be strong, and the amplitude of the oscillation signal output from the spin element 100 may be greater than or equal to the sensitivity that the detector 300 can detect. . In this case, the first amplifier 700 and the second amplifier 800 may be omitted in the configuration of the present invention.

As described above, according to the demodulation device according to the first embodiment of the present invention, the antenna 600 receives the ASK modulated signal transmitted to the air and amplifies the modulated signal by the first amplifier 700 as necessary. do.

And then f _{0 above} The frequency radio signal power level is input to the STO, and the STO is input from the antenna 600 f _0. A current and a magnetic field are set in the STO by the phase controller 200 to have a phase tuning characteristic while recognizing a frequency as a secondary harmonic signal.

As a result, the STO is received through the antenna 600 f ₀ It is tuned to a frequency, and outputs a signal fixed to f _0/2 frequency.

As such, the fixed frequency signal divided in half is input to the second amplifier 800 and amplified as necessary, and finally, the detector 300 can acquire information carried in the wireless signal.

9 to 11 are views showing various configuration examples of the demodulation device according to the second embodiment of the present invention.

Referring to FIG. 9, a demodulation device according to a second embodiment of the present invention includes a plurality of spin elements 100, a plurality of phase controllers 200, and a plurality of detectors 300. The plurality of spin elements 100 may output phase tune signals tuned to a specific frequency among the input modulation signals according to the phase tune characteristics provided by the phase controller 200. For example, the spin element 100 is f _1, when receiving an FSK-modulated signal into two frequencies f ₂ recognizes the modulated signal to the second harmonic signal to frequencies f _1/2, f 2 / A phase tuning signal of two can be output.

9 shows that the spin element 100 is composed of two STOs (STO 1, STO 2), and the phase controller 200 is also composed of two phase controllers (phase controller 1, phase controller 2). In the case of inputting the f ₁ signal transmitted through the airwaves into the STO 1 to which the phase tuning characteristic is given, and inputting the f ₂ signal transmitted through the airwaves into the STO 2 to which the phase tuning characteristic is applied, STO 1 is f _1/2 and outputs the STO 2 outputs a f _2/2 can be obtained a fixed frequency signal distributed by half.

That is, on a lower surface of the f ₁ signal only to the STO 1 f _1/2, the phase control section 2 on the same principle output, and a by the output signal of the STO 1 by the reaction so that the STO 1 phase tuned to f ₁ signal by the phase control unit 1 When the STO by 2 so that the phase tuning and the STO signal f ₂ 2 f ₂ is the response signal only may output a f _1/2 as an output signal of the STO 2.

Meanwhile, the method of arraying two STOs in order to demodulate two-frequency modulated airwave signals, that is, one-level FSK modulated signals, has been described. However, this is only an example and various modifications are possible. Do. That is, in the case of FSK modulation having an m-level index, an m-level demodulation device may be implemented by arraying STOs of 2 ^m or more. By extending these characteristics, it is possible to design a demodulator suitable for an STO array-based frequency hopping system.

The phase controller 200 corresponds to the spin element 100, respectively, and the phase controller 200 imparts a predetermined phase tuning characteristic to the spin element 100, so that the oscillation signal is transmitted to the spin element 100. It can be tuned to the modulation signal input to each.

The plurality of detectors 300 may be provided to correspond to each of the spin elements 100, and may demodulate a phase tuning signal output from the spin device 100 to restore information on the phase tuning signal. Here, each of the detector 300 may be made of an envelope detector using a half-wave rectifier circuit of the diode, the same as the detector included in the demodulation device according to the first embodiment of the present invention, the output from the spin element 100 By monitoring the amplitude of the oscillation signal, it is possible to determine whether a harmonic signal is introduced into the spin element 100 as a modulation signal.

Referring to FIG. 10, a demodulation device according to a second embodiment of the present invention includes an antenna 600, a plurality of first amplifiers 700 for amplifying the modulated signal, and a second amplifier 800 for amplifying the oscillation signal. It may further include.

The antenna 600 may receive each modulated signal transmitted over the airwaves. Here, the modulated signal may be a signal that is transmitted by frequency shift keying (hereinafter referred to as FSK).

The first amplifier 700 may be amplified by a low noise amplifier provided between the antenna 600 and each of the spin elements 100.

The second amplifier 800 may be provided at a rear end of the plurality of spin elements 100 and may include a plurality of variable amplifiers for amplifying a phase tuning signal.

Referring to FIG. 11, each of the plurality of phase controllers 200 may include a current generator 210 and a magnetic field generator 220 for imparting a predetermined phase tuning characteristic to the spin element 100, respectively.

Specifically, each of the phase controllers 200 corresponds to the spin element 100 so that the spin element 100 receives only a modulation signal having a specific frequency and outputs a phase tuning signal tuned to a specific frequency of the modulation signal. Current and magnetic field can be applied.

Referring to FIG. 11, the current generator 1 may apply a current 1 that is a specific current so that the STO 1 is phase tuned to the f ₁ signal, and the current generator 2 is configured to phase tune the STO 2 to the f ₂ signal. A specific current, current 2, can be applied.

In addition, the magnetic field generator 1 may apply a magnetic field 1, which is a valid magnetic field such that the STO 1 is phase-tuned to the f ₁ signal, and the magnetic field generator 2 is a magnetic field 2, which is an effective magnetic field such that the STO 2 is phase-tuned to the f ₂ signal. Can be applied.

As such, the phase controller 1 may cause the STO 1 to be phase tuned to the f ₁ signal by the current 1 and the magnetic field 1, and in the same principle, the phase controller 2 is to phase tune the STO 2 to the f ₂ signal by the current 2 and the magnetic field 2. You can do that.

In addition, as shown in FIG. 11, the demodulation device according to the second embodiment of the present invention includes a plurality of magnetic field sensing units 400 and a plurality of spins for sensing a magnetic field applied from each of the magnetic field generating units 220. The apparatus 100 may further include a temperature compensator 500 for sensing a temperature of the device 100 and correcting a characteristic change according to the sensed temperature. Here, the magnetic field sensing unit 400 and the temperature compensating unit 500 are substantially the same in structure and function as the magnetic field sensing unit and the temperature compensating unit included in the demodulation device according to the first embodiment of the present invention. Is omitted.

As described above, according to the demodulation device according to the second embodiment of the present invention, the air signal of the FSK modulated f ₁ , f ₂ received through the antenna 600 is sufficient by the corresponding first amplifier 700. Each is amplified to level.

Thereafter, an amplified f ₁ signal is input to STO 1, an amplified f ₂ signal is input to STO 2, and the second harmonics of the frequencies f ₁ and f ₂ input from the antenna 600 to the STO 1 and STO 2 are respectively input. A specific current and a valid magnetic field are set in the STO 1 and the STO 2 by the phase control unit 200 corresponding to the STO 1 and the STO 2, respectively, to recognize the signal and have phase tuning characteristics. In this case, the current 1 and the magnetic field 1 are set in the STO 1, and the current 2 and the magnetic field 2 are set in the STO 2, respectively.

As a result, the STO 1 is tuned on, and outputs a signal fixed at f _1/2 frequency is tuned to f ₁ frequency received through the antenna 600, the STO 2 is f ₂ frequency f _2/2 Outputs a fixed signal at a frequency.

As such, the fixed frequency signal divided in half is input to the second amplifier 800 and amplified as necessary, and finally, the detector 300 can acquire information carried in the wireless signal.

Hereinafter, a demodulation integrated device according to an embodiment of the present invention will be described in detail with reference to FIGS. 12 to 14.

In the demodulation integrated device according to the embodiment of the present invention, the demodulation device according to the first and second embodiments of the present invention is manufactured as a single unit integrated circuit (IC) chip. The device may be called a spintronic demodulator.

12 is a block diagram showing a demodulation integrated device according to an embodiment of the present invention. Referring to FIG. 12, a demodulation integrated device may include a substrate 910 and a demodulation device integrated on the substrate 910. On the substrate 910, an electrode 920 for applying power to the demodulator is provided.

The demodulation device may be configured as a demodulation device according to the first and second embodiments of the present invention described with reference to FIGS. 2 to 11.

Referring to FIG. 12, a demodulation device of a demodulation integrated device according to the present embodiment includes a plurality of spin elements 100, a phase control unit 200 that provides phase tuning characteristics to each of the spin elements 100, and a plurality of spin elements 100. The detector 300 may include a detector 300 for detecting a modulation signal output from each of the spin devices 100. In addition, the demodulation device may further include a temperature compensator 500 for sensing a temperature of each of the spin elements 100 and correcting a characteristic change according to the sensed temperature.

The spin device 100 may be driven by receiving power from the electrode 920 to output an oscillation signal, wherein the spin device 100 is formed of an embedded STO installed on the substrate 910. It may be connected by the current distribution unit 930 and the current wire (current wire, 940) to be described later.

In the demodulation integrated device according to the present embodiment, each of the spin element 100, the phase control unit 200, the detector 300, and the temperature compensation unit 500 constituting the demodulation device is the first and second embodiments of the present invention. Since the components and configurations using the same member names of the demodulation device according to the example are substantially the same, detailed description thereof will be omitted.

Referring to FIG. 13, the phase controller may include a current generator 210 disposed between the electrode 920 and the plurality of spin elements 100 to generate current to be applied to each of the plurality of spin elements. . In this case, the current generator 210 may generate a current that imparts a predetermined phase tuning characteristic to each of the spin devices 100 and distribute the current to the respective spin devices 100.

In addition, the phase control unit may further include a plurality of magnetic field generators 220 installed on the spin element 100, respectively. The magnetic field generator 220 applies a predetermined magnetic field to each of the spin elements 100 to impart phase tuning characteristics to the spin elements 100. As shown in FIG. 14, the magnetic field generator 220 may be formed of a two-dimensional flat coil integrated on the substrate 910 by a patterning process.

In addition, the demodulation integrated device according to the exemplary embodiment of the present invention may include a current distribution unit 930 installed between the electrode 920 and the plurality of magnetic field generators 220 as shown in FIG. 13. have. The current distributor 930 may distribute and supply a current to generate a magnetic field in each of the magnetic field generators 220.

Meanwhile, although the demodulation integrated device according to the present invention is not shown, the magnetic field sensing unit for sensing the magnetic field applied by the magnetic field generator 220, the first amplifier for amplifying the demodulation signal, as in the demodulation device according to the present invention, and It may further comprise a second amplifier.

Hereinafter, a modulation / demodulation integrated device according to an exemplary embodiment of the present invention will be described in detail with reference to FIGS. 15 to 19.

Modulation and demodulation integrated device according to an embodiment of the present invention is made of a single unit integrated circuit (IC) chip by adding a modulator to the demodulation integrated device according to the embodiment of the present invention described above, It can be called a spintronic onechip MODEM.

The modulation and demodulation integrated device integrates a demodulator and a conventional spin torque oscillation device for a transmitter or a modulator and is manufactured as a micro IC. The modulation and demodulation integrated device can be miniaturized by integrating various modulators together. Can be.

Referring to FIG. 16, the modulation and demodulation integrated device according to an embodiment of the present invention is integrated on a substrate 910, a modulator 70 and a substrate 910 that are integrated on the substrate 910 and transmit modulation signals. And a demodulator 80 for demodulating the received modulated signal.

The demodulation unit 80 includes a plurality of spin elements 100 including a plurality of embedded STOs installed on the substrate 910, and a phase control unit 200 to impart phase tuning characteristics to each of the spin elements 100. And a detector 300 for demodulating the oscillation signal tuned to the modulation signal output from each of the spin element 100.

In addition, the phase control unit 200, as shown in Figure 19, the current generator 210 for imparting a phase tuning characteristic to the spin element 100 by distributing a current to each spin element 100, A magnetic field generator 220 may be formed of a flat coil to apply a predetermined magnetic field to the spin element 100 to impart phase tuning characteristics to the spin element 100. In addition, the demodulator 80 may further include a temperature compensator 500 for sensing a temperature of each of the spin elements 100 and correcting a characteristic change according to a sensed temperature.

In the modulation and demodulation integrated device according to the present embodiment, each of the spin element 100, the phase control unit 200, the detector 300, and the temperature compensation unit 500 constituting the demodulation device is the first and second embodiments of the present invention. Since the components and configurations using the same member names of the demodulation device according to the example are substantially the same, detailed description thereof will be omitted.

In addition, referring to FIG. 16, the modulation and demodulation integrated device according to the exemplary embodiment of the present invention may further include a power distribution unit 950 for distributing power to the modulator 70 and the demodulator 80. The power divider 950 supplies power to smoothly drive the modulator 70 and the demodulator 80 when a difference in power consumption between the modulator 70 and the demodulator 80 is large. Distributes and supplies.

In addition, referring to FIG. 17, the modulation and demodulation integrated device according to an exemplary embodiment of the present invention may further include a power controller 960 for controlling an output channel of the power distribution unit 950. The power controller 960 may control the output channel of the power distribution unit 950 to turn on / off power of the modulator 70 or the demodulator 80.

That is, since the power distribution unit 950 may have different power specifications of the modulator 70 and the demodulator 80, the power distribution unit 950 generates appropriate power to the modulator 70 and the demodulator 80. Power may be supplied to the power controller 960, and the power controller 960 may determine whether to supply power to supply the power to the modulator 70 and the demodulator 80. As such, the driving of the modulator 70 or the demodulator 80 is controlled by the power controller 960 so that the demodulation integrated device according to the present invention can be used for transmission only, reception only or transmission and reception both use. Can be operated as

In addition, referring to FIG. 18, the modulation and demodulation integrated device according to the exemplary embodiment may further include a shielding film 970 provided in at least one of the modulator 70 and the demodulator 80. By providing the shielding film 970 as described above, it is possible to prevent the electric wave generated in the modulator 70 and the characteristic change of the electric signal flowing through the demodulator 80 generated by the ambient temperature and the surrounding magnetism.

When the shielding film 970 is made of a ferromagnetic material having a high permeability, the shielding film 970 may perform a magnetic shielding function. For example, when installed in close contact with the demodulator 80, the shielding film 970 may act as a heat radiator to prevent the demodulator 80 from changing its characteristics due to a temperature rise.

As described above with reference to the drawings illustrating a demodulation device, a demodulation integrated device and a demodulation integrated device using the same according to the present invention, the present invention is not limited by the embodiments and drawings disclosed herein, the present invention Of course, various modifications can be made by those skilled in the art within the scope of the technical idea.

10: RF switch 20: mixer
30: band filter 40: VCO
50: PLL 60: demodulation integrated device
70: modulator 80: demodulator
90: demodulation integrated device
100: spin element 200: phase control unit
210: current generator 220: magnetic field generator
300: detector 400: magnetic field detector
500: temperature compensation unit 600: antenna
700: first amplifier 800: second amplifier
910: substrate 920: electrode
930: current distribution 940: current wire
950: power distribution unit 960: power control unit
970: shield

Claims (23)

A spin element for outputting an oscillation signal;
A phase control unit for imparting a predetermined phase tuning characteristic to the spin element so that the oscillation signal is synchronized with a modulation signal input to the spin element; And
And a detector for demodulating the oscillation signal tuned to the modulation signal output from the spin element, and restoring information carried in the oscillation signal.
The phase control unit,
And a current generator for applying a predetermined current to the spin element to impart a phase tuning characteristic to the spin element.
delete The method of claim 1,
The phase control unit,
And a magnetic field generator for applying a predetermined magnetic field to the spin element to impart phase tuning characteristics to the spin element together with the current generator.
The method of claim 3, wherein
And a magnetic field sensing unit for sensing a magnetic field applied by the magnetic field generating unit.
The method of claim 1,
And a temperature compensator for sensing a temperature of the spin element and correcting a characteristic change according to a sensed temperature.
6. The method according to any one of claims 1 to 5,
The modulated signal is received from an antenna,
And a first amplifier provided between the antenna and the spin element to amplify the modulated signal.
The method according to claim 6,
And a second amplifier provided at a rear end of the spin element to amplify the oscillation signal.
6. The method according to any one of claims 1 to 5,
The spin element,
When receiving the input frequency f ₀ of the modulated signal, the spin device is a device for demodulating the output frequency to f _0/2, the phase sync signal by recognizing the modulation signal into a second harmonic signal.
The method of claim 1,
The spin device includes a plurality of spin devices for outputting a phase tuning signal tuned to a specific frequency of the input modulation signal,
The phase control unit includes a plurality of phase control units corresponding to each of the plurality of spin elements,
And each of the phase controllers is configured to synchronize an oscillation signal output from each of the plurality of spin elements to a modulation signal input to each of the plurality of spin elements.
The method of claim 9,
The detector includes a plurality of detectors corresponding to each of the plurality of spin elements,
And each of the detectors demodulates a phase tuning signal output from each of the plurality of spin elements to restore information carried in the phase tuning signal.
The method of claim 10,
Each of the modulated signals is received from an antenna,
A plurality of first amplifiers disposed between the antenna and each of the plurality of spin elements to amplify each of the modulated signals; And
And a plurality of second amplifiers provided at a rear end of each of the plurality of spin elements to amplify each of the phase tuning signals.
12. The method according to any one of claims 9 to 11,
Each of the plurality of phase control units,
A current generator for applying a predetermined current to the corresponding spin element to impart phase tuning characteristics to the spin element; And
And a magnetic field generator for applying a predetermined magnetic field to the spin element to impart phase tuning characteristics to the spin element together with the current generator.
13. The method of claim 12,
A plurality of magnetic field sensing units sensing a magnetic field applied from each of the magnetic field generating units; And
And a temperature compensating unit for sensing a temperature of a plurality of the spin elements to correct a characteristic change according to a sensing temperature.
Board;
A plurality of spin elements configured to output an oscillation signal by driving power from an electrode provided on the substrate;
A phase control unit to impart a predetermined phase tuning characteristic to each of the spin elements so that the oscillation signal is synchronized with a modulation signal input to the spin element; And
And a detector for demodulating the oscillation signal tuned to the modulation signal output from each of the spin elements to restore information carried on the oscillation signal.
The phase control unit,
And a current generation unit disposed between the electrode and the plurality of spin elements to generate and distribute a current that imparts a predetermined phase tuning characteristic to each of the spin elements.
delete The method of claim 14,
The phase control unit,
And a plurality of magnetic field generators respectively provided on the spin elements to impart a phase tuning characteristic to the spin elements by applying a predetermined magnetic field to the spin elements.
17. The method of claim 16,
And a current distribution unit disposed between the electrode and the plurality of magnetic field generators to distribute and supply current to generate a magnetic field in each of the magnetic field generators.
The method according to any one of claims 14 and 16 to 17,
And a temperature compensating unit configured to sense a temperature of each of the spin elements and correct a characteristic change according to a sensed temperature.
Board;
A modulation unit provided on the substrate to transmit a modulation signal; And
And a demodulator provided on the substrate to receive the modulated signal.
The demodulation unit,
A plurality of spin elements for outputting an oscillation signal;
A phase control unit to impart a predetermined phase tuning characteristic to each of the spin elements so that the oscillation signal is synchronized with a modulation signal input to the spin element; And
And a detector for demodulating the oscillation signal tuned to the modulation signal output from each of the spin elements to restore the information contained in the oscillation signal.
And a power distribution unit for distributing power to the modulator and the demodulator.
delete 20. The method of claim 19,
And a power controller configured to control an output channel of the power divider to turn on / off at least one of the modulator and the demodulator.
20. The method of claim 19,
And a shielding film provided in at least one of the modulator and the demodulator to prevent a characteristic of an electrical signal flowing through the demodulator from being changed by a surrounding environment.
The method according to any one of claims 19 and 21 to 22,
And a temperature compensating unit configured to sense a temperature of each of the spin elements and to correct a characteristic change according to a sensed temperature.

Images