JPH1168612A - Radio communication equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To satify a sampling theorem while avoiding aliasing and to reproduce an interference signal or noise to each band pass filter with fidelity as well by suppressing the interference signal or noise wider than a band width B within the band width B through a 1st filter. SOLUTION: After N pieces of 1st unit antennas 10, 1st filters 11 are connected to the respective antennas and limited into band width B. A filter 14 wider than band width N×B is provided for facilitating signal processing at a separating means 15 since the band is widened by a switching means 13. Through a filter 16 of the separating means 15, a signal is separated by a serial/parallel converter 17. In this case, when every band width of the filters 14 and 16 is infinite, there is no inter-channel interference. A received signal output 18 is interpolated by linear interpolation or secondary function interpolation as needed. Since conditions are required for the switching speed of the switching means 13 and the filters 14 and 16 for preventing the inter-channel interference, a filter satisfying the condition of Nyquist is used as the filter 16 so that the inter-channel interference is prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is used for receiving or transmitting a radio signal, which simplifies a receiving apparatus capable of receiving signals from a plurality of inputs at the same time. The present invention relates to a simplification of a transmission device capable of transmitting.

[0002]

2. Description of the Related Art Next, a conventional example will be described with reference to the drawings.
FIG. 10 shows the configuration of a conventional device without a filter. FIG. 11 is a diagram shown to explain the operation of FIG. FIG. 12 illustrates a state in which a plurality of input signals are switched by the antenna switching device 2 and become signals after the switching illustrated in FIG. 11. FIG. 12 shows a signal after the signal after switching in FIG. 11 has been completely separated. FIG. 13 shows FIG.
2 shows a signal obtained by interpolating the signal of No. 2 and returning to the original signal. If the bandwidth of the input signal and the switching speed satisfy the sampling theorem, it is possible to separate the input signals among a plurality of input channel signals without causing interference between channels. FIG. 14 shows an example of a signal in which inter-channel interference has occurred.
If a filter is added to the switched signal shown in FIG. 11, interference between channels occurs. This is shown. FIG. 14 shows the signals from input signal 1 to input signal 3 and the signal that caused interference, but only the signal that caused interference can be actually observed. The signals from input signal 1 to input signal 3 shown in FIG. 14 have such a signal waveform if there is no signal of another channel. That is, the signal waveform shown as the input signal 1 in FIG. 14 shows an example in which no signal input other than the input signal 1 exists.

That is, signals from a plurality of unit antennas are converted into one system signal by an antenna switch, and then converted from an analog signal to a digital signal by an AD converter through a low noise amplifier / frequency converter. , AD converted signals are stored in a storage device. In the control device,
An operation is performed on the signal of the storage device to generate a reception signal. In order for a receiving apparatus using an antenna switch to receive a plurality of input signals without omission, it is indispensable to adopt a configuration of the apparatus that satisfies the sampling theorem at the time of switching in order to avoid deterioration of received signal quality. . For this reason, the band of the signal from the unit antenna is limited to B. In manufacturing the receiving device of the present invention, it is desirable that B is narrow. However, if the switch is directly connected to the antenna, the bandwidth B can be adjusted only by the antenna.

However, it is practically difficult to arbitrarily adjust the bandwidth in the antenna. If the bandwidth of the transmission signal is set to B or less and the signal is received by the conventional receiving apparatus, this problem can be solved. However, since the bandwidth of the received interference signal or noise is not B, even if the switching unit is switched at a speed of 2 × N × B, the sampling theorem does not hold for the noise or interference signal. For this reason, a phenomenon called aliasing in sampling occurs, and there is a problem that characteristics are deteriorated.

The switching speed of the switching means is 2 × N × B
With the above, the information of the N filter outputs can be converted into one system signal without any omission by switching. However, if the signal passed through the switch is band-limited even by a filter or the like, the signal waveform spreads temporally. As a result, the input signals are mixed with each other, and there has been no known method for completely returning the switched signals to the original signals by the control device.

For example, in the wireless communication apparatus according to the first aspect, the switching speed of the switch must be high in proportion to the product of the number of inputs and the bandwidth. However, it is difficult to realize a high-speed switch having a large number of input signals.

Conventionally, directivity synthesis is performed by operation of a control device. However, only an example in which directivity synthesis is performed by phase delay and addition of signals is described. For more accurate directivity synthesis, it is necessary to perform synthesis after adjusting both the amplitude and phase of the signal.

[0008] When simultaneously transmitting N input signals with the same or different directivities, it is necessary to supply input signals whose phases and amplitudes have been adjusted to a plurality of antennas. Therefore, when the number of antennas is M, M × N amplitude / phase adjusters, M synthesizers, M frequency converters, and M power amplifiers are required. Thus, the scale of the device is increased. In addition, there has been a problem that the setting accuracy of the amplitude and the phase in the stage after the synthesizer is shifted due to aging or temperature change, which causes an error in directivity.

The switching speed of the switch must be high in proportion to the product of the number of inputs and the bandwidth. However, it is difficult to realize a high-speed switch having a large number of input signals.

Further, in the wireless communication apparatus according to the first aspect, the switching speed of the switch must be high in proportion to the product of the number of inputs and the bandwidth. However, it is difficult to realize a high-speed switch having a large number of input signals.

[0011]

In the present invention, these disadvantages are eliminated, and a high-performance receiving apparatus having a plurality of inputs is easily realized, and a high-performance transmitting apparatus having a plurality of outputs is easily realized. Is what you do.

[0012]

According to the first aspect of the present invention, there is provided a signal processing method comprising the first of N bandwidths B for receiving signals from N unit antennas.
A switching means for receiving the N first filter outputs and switching at a switching speed of 2 × N × B or more, and a second filter having a bandwidth of N × B or more receiving the output of the switching means, Provided is a wireless communication apparatus that uses a third filter as a separating unit that separates an output signal of the second filter into N signals in synchronization with the switching unit.

According to a second aspect of the present invention, there is provided a semiconductor device comprising:
Is provided so as to satisfy Nyquist's first criterion, thereby providing a wireless communication apparatus in which signals from N unit antennas are output as N outputs without being mixed with each other.

According to a third aspect of the present invention, there is provided a wireless communication apparatus having L switching devices whose switching speed of the switching device is 2 × N × B / L and L switching devices.

According to a fourth aspect of the present invention, each of the N output signals from the wireless communication apparatus according to the first aspect is divided into M signals, and the phases and amplitudes of the divided signals are adjusted over M types. Then, by adding N pieces per type, M
Provided is a wireless communication device that obtains an output corresponding to individual directivities.

According to a fifth aspect of the present invention, M input signals having a bandwidth B or less and each of the M input signals are divided into N signals, and the phases and amplitudes of the divided signals are spread over N types. Directional synthesizing means for adding M signals per type, switching means for periodically switching N signals from the directional synthesizing means at a switching period of 2 × N × B or more, and switching means Separating means for separating the signal from the switching means into N signals in synchronism with N, N first filters of bandwidth B for receiving the separated signals, and N filters for receiving the output of the first filter And a unit antenna.

According to a sixth aspect of the present invention, there is provided a wireless communication apparatus having L switching units and L separating units each having a switching speed of 2 × N × B / L.

A seventh aspect of the present invention provides a first filter N × having a bandwidth B for receiving signals from N × M unit antennas.
M first switching means for receiving N outputs of the N × M first filter outputs and switching at a switching speed of 2 × N × B or more; and M first switching means. A second switching means for receiving the output of the switching means and switching in synchronization with the first switching means at a switching speed of 2 × N × M × B or more, and a bandwidth N for receiving the output of the second switching means
× M × B or more N fourth filters, and the N fourth filters
A wireless communication apparatus having a separating unit for separating the output signal of the filter into N × M units in synchronization with the first and second switching units.

According to another aspect of the present invention, there is provided a wireless communication apparatus in which, when receiving a digital signal, the switching speed of the switching means is set to an integral multiple of the symbol rate of the received signal.

According to a ninth aspect of the present invention, there is provided a wireless communication apparatus in which, when transmitting a digital signal, a switching speed of the switching means is an integral multiple of a symbol rate of a signal to be transmitted.

[0021]

Embodiments of the present invention will be described below in detail with reference to the drawings.

FIG. 1 shows an example of a block diagram of a communication device according to the first embodiment of the present invention. The band is limited to B by the first filter 11 after the first unit antenna 10. The configuration is such that N filters are respectively connected to N antennas. Since the band is widened by the switching unit 13, a filter 14 having a bandwidth of N × B or more is provided to facilitate the signal processing in the separating unit 15. The bandwidth of the filter 14 is N
Since it is not less than × B, when N × B is infinite, it corresponds to the case where no filter is inserted. Filter 16 of separation means
The signal is separated by the serial / parallel converter 17 via When the bandwidth of the filter 14 and the bandwidth of the filter 16 of the separating means are infinite, there is no interference between channels. Since the received signal output 18 has the waveform shown in FIG. 12, the signal shown in FIG. 13 can be obtained by interpolating as necessary. As the interpolation method, various known interpolation methods such as linear interpolation and quadratic function interpolation can be used.

If there are no conditions for the switching speed of the switching means 13 and the filter 14 and the filter 16 of the separating means, interference between channels cannot be prevented. Therefore, a filter that satisfies the Nyquist condition is placed in the filter 16 of the separating means to prevent interference between channels. FIG. 2 shows an example. FIG. 2 shows an example of the frequency characteristic of the filter 14 after the switching and the frequency characteristic of the filter 16 of the separating means. In this example, the bandwidth of the filter 14 is
It is sufficiently wider than the bandwidth of the filter 16 of the separating means. However, in practice, the frequency characteristics of the filter between the switching means 13 and the serial / parallel converter 17 need only be a filter that satisfies the Nyquist condition shown in the example of FIG. 2 as a whole. A filter that satisfies the Nyquist condition has an amplitude characteristic that is point-symmetric about a point where the amplitude is １ ／.

FIG. 3 shows an example of a block diagram of a wireless communication apparatus according to the second embodiment of the present invention. The basic principle of the second embodiment is the same as that of the first embodiment. However, in the invention of the first embodiment, the switching speed increases in proportion to the number of unit antennas, so that it can be realized as an apparatus. Have difficulty. Therefore, the first embodiment is divided into L units, which facilitates realization as an apparatus. From the first switching means 23 to the L-th switching means 31, from the filter 26 of the separating means of the first receiving apparatus to the filter of the separating means of the L-th receiving apparatus, and from the first receiving means. Serial / parallel converter (serial / parallel converter) 2 of the separating means of the device
7 to the serial-to-parallel converter of the separating means of the L-th receiver must be synchronized. Therefore, a synchronization signal 35 is required.

FIG. 4 shows an example of a block diagram of a wireless communication apparatus according to a third embodiment of the present invention. N input signals from the first signal input 40 to the N-th signal input 42 are respectively supplied to the amplitude / phase control signal generator 49 for the first directivity.
After being controlled by different amplitude / phase control signals from the first and second adders, respectively, they are added by a first adder 58 to become a first output 59. Similarly, N input signals from the first signal input 40 to the N-th signal input 42 are respectively connected to the second signal input
After being controlled by a different amplitude / phase control signal from the amplitude / phase control signal generator 50 for the second directivity, the second
The second output 61
Becomes Hereinafter, with the same configuration, the first signal input 40 to the N-th signal
The N input signals up to the signal input 42 are respectively controlled by different amplitude and phase control signals from the amplitude and phase control signal generator 51 for the Mth directivity, and then the Mth adder 62, and becomes the M-th output 63. With this configuration, outputs corresponding to M directivities are obtained for N input signals.

FIG. 5 shows an example of a block diagram of a wireless communication apparatus according to the fourth embodiment of the present invention. From the first directivity control signal 72 for controlling the directivity of the first signal corresponding to the M signals from the first input signal 70 to the Mth input signal 71, M directivity control signals up to an M-th directivity control signal 73 for controlling the directivity of the th signal are input to the directivity combining means 74. The N signals 75 from the directivity synthesizing means are switched by the switching means 76 at a switching period of 2 × N × B or more and become one-system signals and input to the separating means 78. The input signal is separated into N signals by separation means, and each of the signals is band-limited by a filter having a bandwidth B, and then emitted as radio waves through an antenna.

When a transmitting apparatus is actually realized by the present invention, a frequency converter, a power amplifier and the like are appropriately inserted between the switching means 76 and the separating means 78. The N signals 75 from the directivity combining means 74 are directly
In the case of a configuration in which the filter 79 is connected to the N-th filter 82, the number of frequency converters and power amplifiers is
N times as much as the fourth embodiment was required. In addition, since there are variations in the characteristics of the N frequency converters and power amplifiers required, these adjustments are indispensable for maintaining high directivity synthesis accuracy.

FIG. 6 shows an example of a method of realizing the directivity combining means 74 shown in FIG. The directivity control signal 156 for controlling the directivity of the first input signal corresponds to each of the M input signals from the first input signal 150 to the M-th input signal 152 and controls the directivity. A directivity control signal 158 for controlling the directivity of the signal is input. Each of the directivity control signals 156 for controlling the directivity of the M-th input signal to the directivity control signals 158 for controlling the directivity of the M-th input signal controls N amplitude / phase adjusters. For example, the amplitude / phase control signal generator 159 for controlling the directivity of the first input signal is provided by the first amplitude / phase adjuster 162 for the first input signal and the Nth amplitude / phase controller for the first input signal. It controls N amplitude and phase adjusters up to an adjuster 164. In general, the signal that has passed through the J-th amplitude / phase adjuster is converted from the first adder 168 to the N-th adder 17.
It is input to the J-th adder out of the N adders up to 2. By connecting the first output to the N-th output to the antenna, signals having different directivities from the first input signal 150 to the M-th input signal 152 can be emitted.

FIG. 7 shows an example of a block diagram of a wireless communication apparatus according to the fifth embodiment of the present invention. In the invention of the fourth embodiment, when the number of antennas increases, the switching speed of the switching unit increases, so that it is difficult to realize. Therefore, an increase in the switching speed of the switching unit is prevented by using L switching units and L separating units. As an example of the configuration of the directivity combining unit 92, the configuration of the directivity combining unit shown in FIG. 6 can be used.
That is, the first transmission signal 90 and the M-th transmission signal 91 in FIG.
7, the first directivity control signal 93 and the M-th directivity control signal 94 in FIG.
Respectively correspond to the directivity control signal 156 for controlling the directivity of the first input signal and the directivity control signal 158 for controlling the directivity of the M-th input signal in FIG. Directivity control means 92
Are divided into L equal parts and input to the first switching means 96 to the L-th switching means 100, respectively. The switching speed of the switching means is 2 × N × B / L or more. The signal from the first switching means 96 is separated into N / L signals by the first separating means 105, and each of the separated signals is connected to an antenna via a filter. The configuration after the first switching means 96 is referred to as a first transmission unit 101. In the invention, the first transmitting unit 101
And a signal from the second switching unit 98 is input to the second transmitting unit 102. Generally, a signal from the J-th switching unit is configured to be input to the J-th transmitting unit.

FIG. 8 shows an example of a block diagram of a wireless communication apparatus according to the sixth embodiment of the present invention. In the sixth embodiment, the switching means of the invention of the first embodiment has a two-stage configuration. That is, in the invention of the first embodiment shown in FIG. 1, the number of the switching means 13 is one, but in FIG. 8, the switching means 13 is changed from the first switching means 134 to the M-th first switching means 140. And the second switching means 141
, A total of M + 1 switching means. In the present embodiment, a second switching unit 141 that receives M antenna groups and their M outputs, a filter 142 that receives the output of the second switching unit 141, and a separating unit 143 that receives the output of the filter 142 Become. The configurations of the M antenna groups are all the same. For example, the first antenna group includes N unit antennas, N filters connected to the unit antennas, and first first switching means 134 for receiving N filter outputs. The synchronization signal 145 synchronizes the plurality of switching means and the separation means.
The operation of the switching means of the wireless communication device according to the sixth embodiment will be described with reference to FIG. FIG. 9 shows an example of an output signal of the first switching unit and an output signal of the second switching unit when M = 3 and N = 3 in the wireless communication apparatus according to the sixth embodiment. Three unit antennas are connected to the first antenna group, and signals A,
D and G are input. The second antenna group 3
Are supplied with signals B, E, and H, respectively. Signals C, F, and I are provided in three of the third antenna groups, respectively.
Is entered. From this, it can be seen that high-speed switching is required, but a high-speed, multi-input switching unit can be realized by a combination of the switching unit 141 having a small number of inputs and a plurality of switching units having a low switching speed. In the sixth embodiment, the switching means having a two-stage configuration is shown. However, the invention of the first embodiment can be realized by a multi-stage switching means.

Next, a seventh embodiment of the present invention will be described. In any one of the first to third embodiments or the sixth embodiment, the switching speed of the switching unit is independent of the symbol rate of the received digital signal. For this reason, two independent clock generators are required: a switching means controlling clock signal generator for controlling the switching means and switching the signal, and a data clock signal generator for extracting the data signal from the received signal. is there. In the seventh embodiment, the switching speed of the switching unit is set to an integral multiple of the symbol rate of the received signal. This makes it possible to generate the necessary signal by dividing the output of the switching means control clock signal generator and using it as a data clock signal or by multiplying the data clock signal to generate the switching means control clock signal. Try to reduce the number of vessels.

Next, an eighth embodiment of the present invention will be described. In any one of the fifth and sixth embodiments, the switching speed of the switching unit is:
It was independent of the symbol rate of the transmitted digital signal. Therefore, a clock signal generator for controlling the switching means for controlling the switching means and switching the signal,
Two independent clock generators are required, a data clock signal generator that creates a transmission signal from an input data signal sequence. In the eighth embodiment, the switching speed of the switching unit is set to an integral multiple of the symbol rate of a signal to be transmitted. This makes it possible to generate the necessary signal by dividing the output of the switching means control clock signal generator and using it as a data clock signal or by multiplying the data clock signal to generate the switching means control clock signal. Try to reduce the number of vessels.

[0033]

According to the first aspect of the present invention, an interference signal or noise having a bandwidth of B or more is suppressed in the bandwidth B by the first filter, so that aliasing does not occur. For this reason, the interference theorem and the noise input to each band-pass filter satisfying the sampling theorem can be faithfully reproduced by the separating means.

A second aspect of the present invention is characterized in that a filter that satisfies the first Nyquist criterion that satisfies the condition of not receiving intersymbol interference is used for the separating means of the first aspect of the present invention.
As a result, the bandwidth receiving the output of the switching means is N × B
Mixing of signals caused by band limitation by the above filters can be separated.

According to the first aspect of the present invention, the switching speed of the switch must be high in proportion to the product of the number of inputs and the bandwidth. However, it is difficult to realize a high-speed switch having a large number of input signals. Therefore, according to the third aspect of the invention, the number of signals after the switching means is L, the signal system is L, and the switching speed of the switching means can be reduced to 2 × N × B / L. This makes it possible to avoid the problem of the switch.

According to a fourth aspect of the present invention, each of the N output signals from the wireless communication apparatus according to the first aspect of the present invention is divided into M signals, and the phases and amplitudes of the divided signals are divided into M types. After each adjustment, by adding N signals per type, signals corresponding to M directivities can be obtained as outputs. In this case, the relationship between N and M is arbitrary. That is, N <M, N = M, and N> M can be satisfied.

According to the fifth aspect of the present invention, M input signals having a bandwidth of B or less, directivity combining means for combining M directivities with respect to each of the M input signals, and directivity combining means The switching means for periodically switching the N signals from the N at a switching cycle of 2 × N × B or more makes the signal system one system and simplifies the communication apparatus. The one-system signal is separated into N signals in synchronization with the switching means, and separated into N signals to return to the original N signals. Bandwidth B for receiving N separated signals
The N signals from which unnecessary signals have been removed by the N first filters are input to N unit antennas. Signals are emitted as radio waves from the unit antenna. that time,
The emitted radio wave has directivity formed by the directivity combining means.

According to the fifth aspect of the present invention, the switching speed of the switching means needs to be high in proportion to the number N of antennas and the bandwidth B. Since it is difficult to realize a high-speed switching means, when N × B is large, it becomes difficult to manufacture the communication device according to the fifth aspect. Therefore, in the invention of claim 6, the switching speed of the switching means is 2 × N × B / L, the number of switching means is L and the number of separating means is L, and the switching speed of the switching means is 1 / L. Manufacturing becomes easy.

According to the first aspect of the present invention, the switching speed of the switch must be high in proportion to the product of the number of inputs and the bandwidth. On the other hand, according to the third aspect of the present invention, the switching speed of the switch can be reduced even when the number of inputs is large, but the number of separating means increases, and the device becomes large.
Therefore, in the invention of claim 7, this problem is solved by providing two stages of switching means. That is, M first switching means having a relatively slow switching speed and one second switching means having a fast switching speed are used. Number of inputs is N ×
In the case of M, the device of claim 1 requires switching means for switching at a speed of 2 × N × M × B. In claim 7, the switching speed of the second switching means is 2 × N × M × B
Therefore, the number of inputs is reduced from N × M to M, so that the switching means can be easily realized.

According to the eighth aspect of the present invention, when a digital signal is received, the switching speed of the switching means is set to an integral multiple of the symbol rate of the signal to be received. It is possible to reduce the number of clock signal generators in the wireless communication device.

According to a ninth aspect of the present invention, when transmitting a digital signal, the switching speed of the switching means is set to an integral multiple of the symbol rate of the signal to be transmitted. It is possible to reduce the number of clock signal generators in the communication device.

[Brief description of the drawings]

FIG. 1 is a block diagram of a wireless communication device according to a first embodiment of the present invention described in claim 1;

FIG. 2 is a characteristic diagram showing an example of a frequency characteristic of a filter 14 after switching and a frequency characteristic of a filter 16 of a separating unit.

FIG. 3 is a block diagram of a wireless communication device according to a second embodiment of the present invention described in claim 3;

FIG. 4 is a block diagram of a wireless communication device according to a third embodiment of the present invention described in claim 4;

FIG. 5 is a block diagram of a wireless communication device according to a fourth embodiment of the present invention described in claim 5;

FIG. 6 is a block diagram of a directivity combining unit in a wireless communication apparatus according to another embodiment of the present invention described in claim 5.

FIG. 7 is a block diagram of a wireless communication apparatus according to a fifth embodiment of the present invention described in claim 6;

FIG. 8 is a block diagram of a wireless communication apparatus according to a sixth embodiment of the present invention described in claim 7;

FIG. 9 is a conceptual diagram illustrating an operation of a switching unit of the wireless communication device according to a sixth embodiment of the present invention described in claim 7;

FIG. 10 is a conceptual configuration diagram showing an embodiment of a configuration of a conventional device having no filter.

FIG. 11 is a conceptual diagram shown to explain the operation of FIG. 10;

FIG. 12 is a conceptual diagram showing a signal after the signal after switching in FIG. 11 has been completely separated.

FIG. 13 is a conceptual diagram showing a signal obtained by interpolating the signal of FIG. 12 and returning to the original signal.

FIG. 14 is a conceptual diagram showing a signal that has caused inter-channel interference.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 1st unit antenna n nth unit antenna 2 Antenna switch 3 Low noise amplification / frequency converter 4 A / D converter 5 Storage device 6 Control device 7 Received signal output 10 1st unit antenna 11 1st filter 12 Nth Unit antenna 13 Switching means 14 Filter 15 Separation means 16 Filter of separation means 17 Serial / parallel converter 18 Received signal output 19 Synchronization signal of switching means 20 First unit antenna 21 N / L unit antenna 22 First filter 23 First The second switching means 24 The filter of the first receiving apparatus 25 The separating means of the first receiving apparatus 26 The filter of the separating means of the first receiving apparatus 27 The serial / parallel converter of the separating means of the first receiving apparatus 28 1st receiving device 29 output of 1st receiving device 30th (L −1) N / L + 1st Unit antenna 31 Lth switching means 32 Output of Lth receiving device 33 Lth receiving device 34 Second receiving device 35 Synchronization signal 40 First signal input 41 Second signal input 42 Nth signal Input 43 M kinds of amplitude and phase adjusters for the first signal input 44 M kinds of amplitude and phase adjusters for the second signal input 45 M kinds of amplitude and phase adjusters for the Nth signal input 46 First directivity Control signal 47 Second directivity control signal 48 Mth directivity control signal 49 Amplitude / phase control signal generator for first directivity 50 Amplitude / phase control signal for second directivity Generator 51 Amplitude and phase control signal generator for Mth directivity 52 First amplitude and phase adjuster for first input signal 53 Second amplitude and phase adjuster for first input signal 54 First Mth amplitude / phase adjuster for input signal 55 First amplitude / phase adjuster for Nth input signal 56 Second amplitude / phase adjuster for Nth input signal 57 Mth amplitude for Nth input signal Phase adjuster 58 First adder 59 First output 60 Second adder 61 Second output 62 Mth adder 63 Mth output 70 First input signal 71 Mth input signal 72 First directivity control signal 73 Mth directivity control signal 74 Directivity synthesis means 75 N signals from directivity synthesis means 76 Switching means 77 Synchronization signal 78 Separation means 79 1st filter 80 1st unit antenna 81 2nd unit antenna 82 Nth filter 83 Nth unit antenna 90 1st transmission signal 91 Mth transmission signal 92 Directivity Forming means 93 first directivity control signal 94 Mth directivity control signal 95 first to N / L-th signals from directivity synthesizing means 96 first switching means 97 directivity synthesizing means N / L + 1st to 2nd
Signals up to the N / L-th signal 98 Second switching means 99 N-N / L + 1-th to N-th signals from the directivity combining means 100 L-th switching means 101 First signal transmission unit 102 Second Signal transmitting section 103 L-th signal transmitting section 104 Synchronizing signal 105 First separating means 106 First filter 107 First unit antenna 108 Second unit antenna 109 N / L-th filter 110 N / L-th unit Antenna 111 L-th separation means 112 N-N / L + 1 filter 113 N-N / L + 1 unit antenna 114 N-N / L + 2 unit antenna 115 N-th filter 116 N-th unit antenna 130 1st antenna group 131 1st unit antenna 132 1st filter 133 Nth unit antenna 134 1st first switch 135 second reception antenna group 136 M-th reception antenna group 137 N (M-1) + 1-th unit antenna 138 N-th (M-1) + 1-th filter 139 MN-th unit antenna 140 M-th first switching unit 141 second switching unit 142 filter 143 separation unit 144 M × N output signals 145 synchronization signal 150 first input signal 151 second input signal 152 M-th input signal 153 first signal input 154 N kinds of amplitude and phase adjusters for the second signal input 155 N kinds of amplitude and phase adjusters for the M signal input 156 Directivity for controlling the directivity of the first input signal Control signal 157 directional control signal for controlling the directivity of the second input signal 158 directional control signal for controlling the directivity of the Mth input signal 159 1 An amplitude / phase control signal generator for controlling the directivity of an input signal 160 An amplitude / phase control signal generator for controlling the directivity of a second input signal 161 For controlling the directivity of the Mth input signal Phase control signal generator 162 for the first input signal 163 second amplitude and phase adjuster for the first input signal 164 Nth amplitude and phase adjuster for the first input signal 165 First amplitude / phase adjuster for Mth input signal 166 Second amplitude / phase adjuster for Mth input signal 167 Nth amplitude / phase adjuster for Mth input signal 168 First adder 169 1st output 170 2nd adder 171 2nd output 172 Nth adder 173 Nth output

Claims (9)

[Claims] 1. N receiving signals from N unit antennas
A first filter having a bandwidth B, a switching means for receiving the outputs of the N first filters, and switching at a switching speed of 2 × N × B or more; a bandwidth N × B receiving the output of the switching means The second above
And a third filter is used as a separating means for separating an output signal of the filter into N signals in synchronization with the switching means. 2. A method according to claim 1, wherein the third filter used for the separating means satisfies the first Nyquist criterion, so that signals from N unit antennas are not mixed with each other, and
The wireless communication device according to claim 1, wherein the number of outputs is one. 3. The switching speed of the switching means is 2 × N ×
2. The wireless communication apparatus according to claim 1, comprising L number of B / L switchers and L number of separation units. 4. The wireless communication apparatus according to claim 1, wherein
The output signals are divided into M signals, and the phases and amplitudes of the divided signals are adjusted for each of the M types, and then N signals are added for each type.
A wireless communication device for obtaining an output corresponding to each of the directivities. 5. M input signals having a bandwidth B or less and each of the M input signals are divided into N signals, and the phases and amplitudes of the divided signals are adjusted over N types. rear,
A directivity combining means for combining M directivities by adding M per type, and N signals from the directivity combining means are periodically switched at a switching period of 2 × N × B or more. Switching means for switching,
A signal from the switching means is synchronized with the switching means,
A wireless communication apparatus comprising: separating means for separating into N signals; N first filters having a bandwidth B for receiving the separated signals; and N unit antennas receiving the output of the first filter. 6. The switching speed of the switching means is 2 × N ×
6. The wireless communication apparatus according to claim 5, comprising L switching units of B / L or more and L separating units. 7. A first filter having N × M bandwidths B, each receiving signals from N × M unit antennas, and N filters among the N × M first filter outputs. M first switching means for receiving the output and switching at a switching speed of 2 × N × B or more, and receiving the output of the M first switching means and having a switching speed of 2 × N × M × B or more A second switching means for switching in synchronization with the first switching means, and a bandwidth N × M × B for receiving an output of the second switching means.
A wireless apparatus comprising: the above-mentioned N fourth filters; and separating means for separating output signals of the N filters into N × M signals in synchronization with the first and second switching means. Communication device. 8. When receiving a digital signal, the first
8. The wireless communication apparatus according to claim 1, wherein the switching speed of the switching means is set to an integral multiple of a symbol rate of a signal to be received. 9. When transmitting a digital signal, the first
The switching speed of the switching means is set to an integral multiple of the symbol rate of a signal to be transmitted.
7. The wireless communication device according to any one of claims 6 to 6.