WO2016060288A1

WO2016060288A1 - Multi-antenna transmission and reception device

Info

Publication number: WO2016060288A1
Application number: PCT/KR2014/009637
Authority: WO
Inventors: 조동호; 박대회
Original assignee: 한국과학기술원
Priority date: 2014-10-14
Filing date: 2014-10-14
Publication date: 2016-04-21
Also published as: KR20160055719A; KR101718885B1

Abstract

A multi-antenna transmission device of the present invention can comprise: an RF resonator for generating a reference signal in a carrier frequency; a power amplifier for amplifying the generated reference signal to a signal of a preset magnitude; N number of switches for individually adjusting the magnitude of a transmission signal for each channel to be wirelessly transmitted, on the basis of the amplified reference signal for each channel; N number of inverters for individually determining a sign of the magnitude-adjusted transmission signal for each channel; and a transmission antenna integrated structure in which N number of antennas having different patterns and polarization characteristics individually and wirelessly transmit the determined transmission signal for each channel in different radiation patterns.

Description

Multi-antenna Transmit and Receive Devices

The present invention relates to an antenna transmission and reception apparatus, and more particularly, to a multi-antenna transmission and transmission system suitable for transmitting information (symbols) using a single RF and receiving information using a small pattern / polarization antenna integrated structure. It relates to a receiving device.

In recent years, with the breakthrough in wireless communication technology, a wide range of portable devices (eg, mobile phones such as mobile phones, smartphones, PMPs, smart pads, smartbooks, tablet PCs, netbooks, laptops, etc.) that can use wireless Internet services are widely used. With the widespread use, data usage in the wireless network environment has exploded.

Accordingly, a shortage of frequency due to an increase in data usage is a big problem. As one method for solving such a problem, a multiple input multiple output (MIMO) technique has been proposed.

1 is a block diagram of a conventional antenna transmission apparatus using a MIMO antenna.

Referring to FIG. 1, a conventional antenna transmission apparatus includes an RF element group of four RFs 102a-102d, an attenuator group of four attenuators 104a-104d, and four phase converters 106a-106d. A phase shifter group, an antenna group of four transmit antennae 108a-108d.

Here, the conventional MIMO antenna is a technique of obtaining a multiplexing gain by arranging a plurality of antenna elements such that at least 0.5 wavelengths are separated and connecting each RF element to each antenna element.

However, the conventional antenna transmission apparatus using the MIMO antenna has a problem that the installation space occupied by the antenna continuously increases.

In addition, in the conventional antenna transmission apparatus, the number of RF elements required increases as the number of antennas increases, thereby causing a problem of low price competitiveness.

In addition, the volume of the entire antenna system becomes relatively large due to the installation space of the antenna and the relatively large number of RF elements, and thus has a limitation in that it is unsuitable as an antenna system for a terminal.

According to an aspect of the present invention, an RF resonator for generating a reference signal at a carrier frequency, a power amplifier for amplifying the generated reference signal to a signal having a predetermined magnitude, and a reference signal for each amplified channel are provided. N switches for adjusting the size of the transmission signal for each channel to be transmitted wirelessly, N inverters for determining the sign of the transmission signal for each channel whose size is adjusted, and N having different patterns and polarization characteristics. Provided is a multi-antenna transmission apparatus including a transmission antenna integrated structure for wirelessly transmitting a transmission signal for each channel in which two antennas are determined in different radiation patterns.

Each of the N switches of the present invention can adjust the size of the transmission signal by repeating the switch on / off in a predetermined pattern of a period of at least two times faster than the symbol period.

The predetermined pattern of the present invention may be determined according to the magnitude and sign of the target signal.

According to another aspect of the present invention, an RF resonator for generating a reference signal at a carrier frequency, a power amplifier for amplifying the generated reference signal into a signal having a predetermined magnitude, and a reference signal for each amplified channel are provided. N attenuators for attenuating the size of the transmission signal for each channel to be transmitted wirelessly to a predetermined size, and N phase converters for converting the transmission signal for each channel whose size is attenuated to a predetermined phase, respectively, The present invention provides a multi-antenna transmission apparatus including a transmission antenna integrated structure in which N antennas having different patterns and polarization characteristics respectively transmit radio signals of each phase-converted channel in a different radiation pattern.

According to yet another aspect, the present invention provides an RF resonator for generating a reference signal at a carrier frequency, a power amplifier for amplifying the generated reference signal into a signal having a predetermined magnitude, and a reference signal for each amplified channel. N switches for adjusting the size of the transmission signal for each channel to be transmitted wirelessly based on each other, N phase converters for converting the transmission signal for each channel with the adjusted size to a predetermined phase, and different patterns and Provided is a multi-antenna transmission apparatus including a transmission antenna integrated structure in which N antennas having polarization characteristics respectively wirelessly transmit a transmission signal for each channel, which is phase-shifted, in different radiation patterns.

According to another aspect of the present invention, there is provided a reception antenna integrated structure in which N antennas having different patterns and polarization characteristics receive signals for each channel radiated in different radiation patterns, and received signals for each received channel. N phase shifters that apply varying phase values with different periods to each other, N switches for selecting respective phase-converted received signals for each channel, and received signals transmitted through each switch as digital signals. Provided is a multi-antenna receiver including an ADC to convert.

Each of the N phase converters of the present invention may change the phase with a period at least two times faster than a symbol period to cause a frequency modulation effect.

According to another aspect, the present invention provides a receiver antenna integrated structure in which N antennas having different patterns and polarization characteristics receive signals for each channel radiated in different radiation patterns, and each channel received through each antenna. Provided is a multi-antenna receiving apparatus including N ADCs for converting respective received signals into digital signals.

According to another aspect, the present invention provides a reception antenna integrated structure in which N antennas having different patterns and polarization characteristics receive signals for each channel radiated in different radiation patterns, and a carrier frequency received through each antenna. The present invention provides a multi-antenna receiving apparatus including N SDRs each of which converts an analog signal in a band into a digital signal and extracts the respective SDRs, and an ADC that converts a linearly combined received signal extracted through each SDR into a digital signal.

The present invention can effectively increase the channel capacity while requiring a relatively small antenna installation space by using a transmit and receive antenna integrated structure of N antennas having different patterns and polarization characteristics.

In addition, by applying a structure using a single RF resonator and a relatively small antenna installation space, the present invention can realize a miniaturization suitable for a terminal antenna system, and can realize a terminal antenna system with low system complexity and low cost. have.

In addition, since the present invention can be designed with the appropriate number of ports of the pattern / polarization antenna according to the environment of the wireless communication, it can be effectively applied to repeaters and base stations of small size that can meet the requirements of various mobile electronic devices.

2 is a block diagram of a multi-antenna transmission apparatus according to Embodiment 1 of the present invention.

3 is a block diagram of a multi-antenna transmission apparatus according to Embodiment 2 of the present invention.

4 is a block diagram of a multi-antenna transmission apparatus according to Embodiment 3 of the present invention.

5 is a block diagram of a multi-antenna receiving apparatus according to Embodiment 4 of the present invention.

6 is a block diagram of a multi-antenna receiving apparatus according to Embodiment 5 of the present invention.

7 is a block diagram of a multi-antenna receiving apparatus according to Embodiment 6 of the present invention.

First, the advantages and features of the present invention, and a method of achieving them will be apparent with reference to the embodiments described below in detail with reference to the accompanying drawings. Herein, the present invention is not limited to the embodiments disclosed below, but may be implemented in various forms, and the present embodiments are merely provided to make the disclosure of the present invention complete, and those of ordinary skill in the art to which the present invention pertains. The technical scope of the present invention should be defined by the claims as it is provided by way of example so that those skilled in the art can clearly understand the scope of the invention.

In addition, in the following description of the present invention, if it is determined that a detailed description of a known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted. In addition, terms to be described below are terms defined in consideration of functions in the present invention, which may be changed according to intention or custom of a user, an operator, or the like. Therefore, the definition should be made based on the technical idea described throughout this specification.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the present invention.

The pattern / polarization antenna (transmitting or receiving antenna integrated structure) applied to various embodiments of the present invention is an antenna technology that can secure a plurality of channels even when a plurality of antennas are integrated in a size smaller than 0.5 wavelength. This is because each antenna constituting the pattern / polarization antenna has an antenna radiation pattern corresponding to different basis vectors in the beam space.

Referring to FIG. 2, the multi-antenna transmission apparatus of the present embodiment includes one RF resonator 202, one power amplifier 204, a switch group consisting of four

switches

206a, 206b, 206c, and 206d, and four inverters. An inverter group of 208a, 208b, 208c, and 208d, a transmission antenna integrated structure of four

antennas

210a, 210b, 210c, and 210d.

The multi-antenna transmission apparatus according to the present embodiment applies an independent real number signal to each antenna by adjusting a magnitude and a sign of a signal to be sent to a target frequency band by using a switch and an inverter in each antenna.

That is, since 2N independent real number signals are applied through an antenna of the 2N port, the UE may transmit independent N complex number signals.

First, the RF resonator 202 may mean, for example, an RF oscillator, and generates (generates) a reference signal at a carrier frequency and transmits the generated reference signal to the power amplifier 204 of the next stage. And the like can be provided.

In addition, the power amplifier 204 may provide a function of changing (amplifying) a reference signal provided from the RF resonator 202 to a large signal having a predetermined size, that is, a desired size, and the like. The signal is passed through power distribution to each

switch

206a, 206b, 206c, 206d, which forms a group of switches, respectively.

The first switch 206a in the switch group is a channel to be wirelessly transmitted to the corresponding frequency band based on the reference signal of the corresponding channel having the power Pwr1 amplified by the power amplifier 204 and distributed to each antenna. For example, the size of the transmission signal (symbol information) of the channel 1) may be adjusted to a predetermined size, that is, a desired size, and transmitted to the first inverter 208a.

In addition, the second switch 206b is a channel (for example, channel 2) to be amplified by the power amplifier 204 and to wirelessly transmit the reference signal of the corresponding channel having the power Pwr2 distributed to each antenna in the corresponding frequency band. The size of the transmission signal (symbol information) can be adjusted to a preset size, that is, a desired size, and transmitted to the second inverter 208b.

In addition, the third switch 206c is a channel (for example, based on a reference signal of a corresponding channel having the power Pwr2N-1 distributed through each of the power amplifiers 204 and distributed to each antenna) (eg, a channel to be wirelessly transmitted to the corresponding frequency band). The size of the transmission signal (symbol information) of the channel 3 may be adjusted to a predetermined size, that is, a desired size, and transmitted to the third inverter 208c.

In addition, the fourth switch 206d is a channel (for example, based on a reference signal of the corresponding channel having the power Pwr2N amplified through the power amplifier 204 and distributed to each antenna) (eg, The size of the transmission signal (symbol information) of the channel 4) may be adjusted to a predetermined size, that is, a desired size, and transmitted to the fourth inverter 208d.

Here, each switch (206a, 206b, 206c, 206d) can adjust the size of the transmission signal by repeating the switch on / off in a constant pattern of a period of at least two times faster than the symbol period, this constant pattern is It may be determined according to the magnitude and sign of the target signal.

Next, the first inverter 208a in the inverter converter group determines the sign of the transmission signal of the corresponding channel (corresponding frequency band) adjusted to the desired size through the first switch 206a to correspond to the corresponding first antenna 210a. It can provide functions such as forwarding.

In addition, the second inverter 208b determines the sign of the transmission signal of the corresponding channel (corresponding frequency band) adjusted to the desired size through the second switch 206b, and transmits it to the corresponding second antenna 210b. Can provide functionality.

In addition, the third inverter 208c determines the sign of the transmission signal of the corresponding channel (corresponding frequency band) adjusted to the desired size through the third switch 206c, and transmits the code to the corresponding third antenna 210c. Can provide functionality.

In addition, the fourth inverter 208d determines the sign of the transmission signal of the corresponding channel (corresponding frequency band) adjusted to the desired size through the fourth switch 206d, and transmits the code to the corresponding fourth antenna 210d. Can provide functionality.

Here, the

inverters

208a, 208b, 208c, and 208d may determine the sign of the transmission signal by applying a signal of an existing sign when the switch selects ON and applies a signal of opposite sign when selecting the inverter. .

Next, each antenna in the transmitting antenna integrated structure is a transmitting antenna having different patterns and polarization characteristics, and functions to wirelessly transmit transmission signals for each channel to which corresponding inverters are transmitted in different radiation patterns. Can be provided.

For example, the first antenna 210a wirelessly transmits a transmission signal of a corresponding channel transmitted from the first inverter 208a in a first radiation pattern preset thereto, and the second antenna 210b is a second inverter 208b. The transmission signal of the corresponding channel transmitted from the radio signal is transmitted wirelessly to the preset second radiation pattern different from the first radiation pattern, and the third antenna 210c receives the transmission signal of the corresponding channel transmitted from the third inverter 208c. Wireless transmission is performed in a preset third radiation pattern which is different from the first and second radiation patterns, and the fourth antenna 210d receives the first and second transmission signals of the corresponding channel transmitted from the fourth inverter 208d. And wirelessly transmit a preset fourth radiation pattern different from the third radiation pattern.

That is, the multi-antenna transmission apparatus according to the present embodiment has a transmission antenna integrated structure consisting of four antennas having different patterns and polarization characteristics, thereby allowing one channel, two channels, three channels, or four channels simultaneously. The transmission signal (symbol information) can be selectively transmitted wirelessly.

On the other hand, in the present embodiment has been described by applying a transmission antenna integrated structure consisting of four antennas, the multi-antenna transmission apparatus of the present embodiment is not necessarily limited to this, 4 according to the need (or use) and application environment, etc. Of course, it can also be designed with four or less antennas or four or more antennas.

Therefore, four switches illustrated in the present embodiment may be defined as N switches, four inverters as N inverters, and four antennas as N antennas.

Example 2

Referring to FIG. 3, the multi-antenna transmission apparatus of the present embodiment includes a single RF resonator 302, one power amplifier 304, a switch group consisting of three

switches

306a, 306b, and 306c, and three phase shifters ( A phase shifter group of 308a, 308b, 308c, a transmit antenna integrated structure of three

antennas

310a, 310b, 310c, and the like.

First, one RF resonator 302 may refer to, for example, an RF oscillator, and generates (generates) a reference signal at a carrier frequency to a next power amplifier 304. It can provide functions such as delivering.

In addition, the power amplifier 304 may provide a function of changing (amplifying) a reference signal provided from the RF resonator 302 to a large signal having a predetermined size, that is, a desired size, and the like. The signal is delivered via power distribution to each of the

switches

306a, 306b, 306c, which form a group of switches.

The first switch 306a in the switch group is a channel to be wirelessly transmitted to the corresponding frequency band based on the reference signal of the corresponding channel having the power Pwr1 amplified by the power amplifier 304 and distributed to each antenna. For example, the size of the transmission signal (symbol information) of the channel 1) may be adjusted to a predetermined size, that is, a desired size, and transmitted to the first phase converter 308a.

In addition, the second switch 306b is a channel (eg, a channel) to be wirelessly transmitted to a corresponding frequency band based on a reference signal of a corresponding channel having the power Pwri amplified by the power amplifier 304 and distributed to each antenna. The size of the transmission signal (symbol information) of 2) may be adjusted to a predetermined size, that is, a desired size, and transmitted to the second phase converter 308b.

In addition, the third switch 306c is a channel (for example, a channel) to be wirelessly transmitted to a corresponding frequency band based on a reference signal of a corresponding channel having the power PwrN amplified by the power amplifier 304 and distributed to each antenna. The size of the transmission signal (symbol information) of 3) may be adjusted to a predetermined size, that is, a desired size, and transmitted to the third phase converter 308c.

Here, each

switch

306a, 306b, 306c can adjust the size of the transmission signal by repeating the switch on / off in a constant pattern of a period of at least two times faster than the symbol period, which is a target pattern It may be determined according to the magnitude and sign of the signal.

Next, the first phase shifter 308a in the phase shifter group converts the transmission signal of the corresponding channel (corresponding frequency band) adjusted to the desired magnitude through the first switch 306a into a preset phase, that is, the desired phase, to correspond. It may provide a function such as transmitting to the first antenna 310a.

In addition, the second phase shifter 308b converts the transmission signal of the corresponding channel (the corresponding frequency band) adjusted to the desired size through the second switch 306b into a predetermined phase, that is, the desired phase, to correspond to the corresponding second antenna ( 310b) may be provided.

In addition, the third phase shifter 308c converts the transmission signal of the corresponding channel (corresponding frequency band) attenuated to a desired magnitude through the third switch 306c into a preset phase, that is, a desired phase, to correspond to a corresponding third antenna ( 310c) may be provided.

Next, each antenna in the transmit antenna integrated structure is a transmit antenna having different patterns and polarization characteristics, and wirelessly transmits a transmission signal for each channel phase-converted through each corresponding phase converter in a different radiation pattern. And the like can be provided.

For example, the first antenna 310a wirelessly transmits a transmission signal of a corresponding channel phase-shifted through the first phase shifter 308a in a first radiation pattern preset thereto, and the second antenna 310b performs a second phase. The transmission signal of the corresponding channel, which is phase-converted through the converter 308b, is wirelessly transmitted in a second radiation pattern which is different from the first radiation pattern, and the third antenna 310c is phase-shifted through the third phase converter 308c. The transmission signal of the corresponding channel is wirelessly transmitted in a third radiation pattern set differently from the first and second radiation patterns.

That is, the multi-antenna transmission apparatus according to the present embodiment transmits signals of one channel, two channels, or three channels simultaneously through a transmission antenna integrated structure having three antennas having different patterns and polarization characteristics. ) Can be wirelessly transmitted selectively.

On the other hand, in the present embodiment has been described as applying a transmission antenna integrated structure consisting of three antennas, the multi-antenna transmission apparatus of the present embodiment is not necessarily limited to this, 2 according to the need (or use) and application environment, etc. Of course, it can be designed with three antennas or three or more antennas.

Therefore, three switches illustrated in the present embodiment may be defined as N switches, three phase shifters as N phase shifters, and three antennas as N antennas.

Example 3

The invention according to the present embodiment is a technique of obtaining a multiplexing gain by combining a pattern / polarization antenna technology and a radar antenna technology.

In other words, unlike the conventional radar antenna technology which used the attenuator and the phase shifter to maximize the diversity gain, the present embodiment is a technique of obtaining a multiplexing gain by applying different signals to each antenna element using the attenuator and the phase shifter. to be.

This means that the information signal xi corresponding to each pattern / polarized antenna element is applied to the reference signal x generated through a single RF resonator by using an attenuator and a phase shifter, so that as many signals as the number of pattern / polarized antenna ports can be sent. do. The applied signal is transmitted through the beam space generated by the pattern / polarization antenna, thereby obtaining a multiplexing gain.

The invention according to the present embodiment may be configured as a small antenna using a pattern / polarization antenna of a plurality of ports operating independently. In addition, unlike the electronically steerable passive array radiator (ESPAR) which uses multiplexing gains using interference effects, the present invention can generate beam space stably with respect to the surrounding environment. That is, in the case of a pattern / polarization antenna, each antenna element is structurally designed to form a radiation pattern of a basis vector, so that beam space can be stably generated with respect to the surrounding environment.

Referring to FIG. 4, the multi-antenna transmission apparatus of the present embodiment includes one RF resonator 402, one power amplifier 404, three attenuator groups including three

attenuators

406a, 406b, and 406c, and three phase shifters ( A phase shifter group of 408a, 408b, 408c, a transmit antenna integrated structure of three

antennas

410a, 410b, 410c, and the like.

First, the present embodiment proposes a model that applies only one RF resonator, and the RF resonator 402 may mean, for example, an RF oscillator. The RF resonator 402 may refer to a reference signal at a carrier frequency. Can be generated (generated) and delivered to the next stage power amplifier 404.

In addition, the power amplifier 404 may provide a function of changing (amplifying) a reference signal provided from the RF resonator 402 to a large signal having a predetermined size, that is, a desired size, and the like. The signal is passed through power distribution to each

attenuator

406a, 406b, 406c, which forms a group of attenuators, respectively.

The first attenuator 406a in the attenuator group is a channel to be wirelessly transmitted to the corresponding frequency band based on the reference signal of the corresponding channel having the power Pwr1 amplified by the power amplifier 404 and distributed to each antenna. For example, the size of the transmission signal (symbol information) of the channel 1) may be reduced to a predetermined size, that is, a desired size, and transmitted to the first phase converter 408a.

In addition, the second attenuator 406b is a channel (eg, a channel) to be wirelessly transmitted to a corresponding frequency band based on a reference signal of a corresponding channel that is amplified by the power amplifier 404 and has power Pwri distributed to each antenna. The size of the transmission signal (symbol information) of 2) may be reduced to a predetermined size, that is, a desired size, and transmitted to the second phase converter 408b.

In addition, the third attenuator 406c is a channel (eg, a channel) to be wirelessly transmitted to a corresponding frequency band based on a reference signal of a corresponding channel having the power PwrN amplified by the power amplifier 404 and distributed to each antenna. The size of the transmission signal (symbol information) of 3) may be reduced to a predetermined size, that is, a desired size, and transmitted to the third phase converter 408c.

Next, the first phase shifter 408a in the phase shifter group transmits, through the first attenuator 406a, the transmission signal of the corresponding channel (corresponding frequency band) whose magnitude is attenuated to a desired phase to a predetermined phase, that is, a desired phase. It may provide a function, such as converted and transferred to the corresponding first antenna (410a).

In addition, the second phase shifter 408b converts the transmission signal of the corresponding channel (the frequency band) whose amplitude is attenuated to the desired size through the second attenuator 406b into a predetermined phase, that is, a desired phase. It may provide a function such as transmitting to the two antenna (410b).

In addition, the third phase shifter 408c converts the transmission signal of the corresponding channel (the corresponding frequency band) whose amplitude is attenuated to the desired size through the third attenuator 406c into a predetermined phase, that is, the desired phase. It may provide a function such as transmitting to the three antenna (410c).

For example, the first antenna 410a wirelessly transmits a transmission signal of a corresponding channel phase-shifted through the first phase shifter 408a in a first radiation pattern preset thereto, and the second antenna 410b transmits a second phase. The transmission signal of the corresponding channel, which is phase-converted through the converter 408b, is wirelessly transmitted in a second radiation pattern which is different from the first radiation pattern, and the third antenna 410c is phase-shifted through the third phase converter 408c. The transmission signal of the corresponding channel is wirelessly transmitted in a third radiation pattern set differently from the first and second radiation patterns.

Accordingly, three attenuators illustrated in the present embodiment may be defined as N attenuators, three phase shifters as N phase shifters, and three antennas as N antennas.

Example 4

Referring to FIG. 5, the multi-antenna receiving apparatus of this embodiment includes a receiving antenna integrated structure consisting of three

antennas

502a, 502b, and 502c, a phase shifter group of three

phase shifters

504a, 504b, and 504c, and three Switch groups of

switches

506a, 506b, 506c, ADC 508, and the like.

First, each antenna having different patterns and polarization characteristics constituting the reception antenna integrated structure may provide a function of receiving a signal for each channel radiated with a different radiation pattern and transmitting the signal to each corresponding phase converter. .

For example, the first antenna 502a receives the radiation pattern of the first channel and transmits it to the first phase shifter 504a, and the second antenna 502b receives the radiation pattern of the second channel and the second phase shifter ( 504b, the third antenna 502c receives the radiation pattern of the third channel and transmits it to the third phase shifter 504c.

Next, each phase shifter in the phase shifter group may cause a frequency modulation effect by changing the phase with a different period (e.g., at least twice as fast as the symbol period) for the received signal for each channel received. .

For example, the first phase shifter 504a changes the phase with a period at least two times faster than the symbol period with respect to the received signal of the channel transmitted from the first antenna 502a, and transmits the phase to the first switch 506a. The second phase shifter 504b changes the phase with a period at least two times faster than a symbol period with respect to the received signal of the channel transmitted from the second antenna 502b, and transmits the phase to the second switch 506b. The three phase shifter 504c changes the phase with a period at least two times faster than the symbol period with respect to the received signal of the channel transmitted from the third antenna 502c and transmits the phase to the third switch 506c.

In addition, the first switch 506a in the switch group selects a received signal of the phase shifted first channel and transmits the received signal to the ADC 508, and the second switch 506b selects a received signal of the phase shifted second channel. The third switch 506c selects the received signal of the phase-converted third channel and transfers the received signal to the ADC 508.

Finally, the ADC 508 may provide a function of converting a received signal of each channel transmitted through each

switch

506a, 506b, 506c into a digital signal.

That is, the multi-antenna receiving apparatus according to the present embodiment receives a signal (symbol information) of one channel, two channels, or three channels simultaneously through a receiving antenna integrated structure having three antennas having different patterns and polarization characteristics. ) Can be selectively received.

Meanwhile, in the present embodiment, the reception antenna integrated structure consisting of three antennas is described. However, the multi-antenna receiver of the present embodiment is not necessarily limited thereto. Of course, it can be designed with three antennas or three or more antennas.

Therefore, three antennas illustrated in this embodiment may be defined as N antennas, three phase shifters as N phase shifters, and three switches as N switches.

Example 5

Referring to FIG. 6, the multi-antenna receiving apparatus of the present embodiment may include a receiving antenna integrated structure consisting of three

antennas

602a, 602b, and 602c, an ADC group including three

ADCs

604a, 604b, and 604c. have.

First, each antenna having different patterns and polarization characteristics constituting the reception antenna integrated structure may provide a function of receiving a signal for each channel radiated with a different radiation pattern and transferring the signal to each corresponding ADC.

For example, the first antenna 602a receives the radiation pattern of the first channel and transmits it to the first ADC 604a, and the second antenna 602b receives the radiation pattern of the second channel and the second ADC 604b. The third antenna 602c receives the radiation pattern of the third channel and transmits it to the third ADC 604c.

The first ADC 604a converts the analog received signal of the first channel transmitted from the first antenna 602a into digital data, and the second ADC 604b receives the second transmitted from the second antenna 602b. The analog received signal of the channel is converted into digital data, and the third ADC 604c may provide a function of converting the analog received signal of the third channel transmitted from the third antenna 602c into digital data.

Therefore, three antennas illustrated in this embodiment may be defined as N antennas, and three ADCs may be defined as N ADCs.

Example 6

Referring to FIG. 7, the multi-antenna receiving apparatus of the present embodiment includes a receiving antenna integrated structure consisting of three

antennas

702a, 702b, and 702c, an SDR group of three

SDRs

704a, 704b, and 704c, and one ADC. 706) and the like.

First, each antenna having different patterns and polarization characteristics constituting the receiving antenna integrated structure receives a signal for each channel radiated with a different radiation pattern and transmits the signal to each corresponding software-defined radio (SDR). Can be provided.

For example, the first antenna 702a receives the radiation pattern of the first channel and transmits it to the first SDR 704a, and the second antenna 702b receives the radiation pattern of the second channel and the second SDR 704b. The third antenna 702c receives the radiation pattern of the third channel and transmits it to the third SDR 704c.

Next, the first SDR 704a converts and extracts an analog signal in a carrier frequency band received through the first antenna 702a into a digital signal, and the second SDR 704b selects the second antenna 702b. The analog signal in the carrier frequency band received through the digital signal is changed and extracted, and the third SDR 704c is converted to the digital signal in the carrier frequency band received through the third antenna 702c to extract the digital signal It can provide a function such as.

Finally, the ADC 706 may provide a function of converting a linearly combined received signal extracted through each of the SDRs 704a, 704b, and 704c into a digital signal.

Therefore, three antennas illustrated in the present embodiment may be defined as N antennas, and three SDRs may be defined as N SDRs, respectively.

The above description is merely illustrative of the technical spirit of the present invention, and those skilled in the art to which the present invention pertains have various substitutions, modifications, changes, etc. without departing from the essential characteristics of the present invention. You will easily see this possible. That is, the embodiments disclosed in the present invention are not intended to limit the technical idea of the present invention but to describe the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments.

Therefore, the protection scope of the present invention should be interpreted by the claims to be described later, and all technical ideas within the equivalent scope will be construed as being included in the scope of the present invention.

Claims

An RF resonator for generating a reference signal at a carrier frequency,

A power amplifier for amplifying the generated reference signal into a signal having a preset magnitude;

N switches for respectively adjusting the size of the transmission signal for each channel to be transmitted wirelessly based on the reference signal for each amplified channel,

N inverters for determining the sign of the transmission signal for each channel, each of which is scaled;

A transmission antenna integrated structure in which N antennas having different patterns and polarization characteristics wirelessly transmit transmission signals for each channel determined in different radiation patterns

Multi-antenna transmission device comprising a.
The method of claim 1,

Each of the N switches,

By repeating the switch on / off in a constant pattern of at least two times faster than the symbol period, the size of the transmission signal is adjusted.

Multi-antenna transmission device.
The method of claim 2,

The constant pattern is,

Determined according to the magnitude and sign of the target signal

Multi-antenna transmission device.
An RF resonator for generating a reference signal at a carrier frequency,

A power amplifier for amplifying the generated reference signal into a signal having a preset magnitude;

N attenuators for attenuating the magnitude of the transmission signal for each channel to be transmitted wirelessly based on the reference signal for each amplified channel to a preset size;

N phase converters for converting the transmission signal for each channel whose magnitude is attenuated to a predetermined phase, respectively;

A transmission antenna integrated structure in which N antennas having different patterns and polarization characteristics transmit radio signals of each phase-converted channel in different radiation patterns.

Multi-antenna transmission device comprising a.
An RF resonator for generating a reference signal at a carrier frequency,

A power amplifier for amplifying the generated reference signal into a signal having a preset magnitude;

N switches for respectively adjusting the size of the transmission signal for each channel to be transmitted wirelessly based on the reference signal for each amplified channel,

N phase shifters for converting the transmission signal for each channel of the adjusted size to a predetermined phase, respectively;

A transmission antenna integrated structure in which N antennas having different patterns and polarization characteristics transmit radio signals of each phase-converted channel in different radiation patterns.

Multi-antenna transmission device comprising a.
The method of claim 5, wherein

Each of the N switches,

By repeating the switch on / off in a constant pattern of at least two times faster than the symbol period, the size of the transmission signal is adjusted.

Multi-antenna transmission device.
The method of claim 6,

The constant pattern is,

Determined according to the magnitude and sign of the target signal

Multi-antenna transmission device.
A reception antenna integrated structure in which N antennas having different patterns and polarization characteristics receive signals for each channel radiated in different radiation patterns;

N phase converters each applying a phase value that varies with a different period for the received signal of each channel,

N switches that can select the received signal for each phase-shifted channel, respectively,

ADC which converts received signal transmitted through each switch into digital signal

Multi-antenna receiving device comprising a.
The method of claim 8,

Each of the N phase converters,

At least twice as fast as the symbol period, changing its phase to induce a frequency modulation effect

Multi-antenna receiver.
A reception antenna integrated structure in which N antennas having different patterns and polarization characteristics receive signals for each channel radiated in different radiation patterns;

N ADCs that convert received signals for each channel received through each antenna into digital signals

Multi-antenna receiving device comprising a.
A reception antenna integrated structure in which N antennas having different patterns and polarization characteristics receive signals for each channel radiated in different radiation patterns;

N SDRs which extract and convert analog signals in the carrier frequency band received through each antenna into digital signals, respectively,

ADC converts linearly combined received signal into digital signal extracted through each SDR

Multi-antenna receiving device comprising a.