CN112751795B - Antenna array and radio receiving method - Google Patents
Antenna array and radio receiving method Download PDFInfo
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- CN112751795B CN112751795B CN201911049409.1A CN201911049409A CN112751795B CN 112751795 B CN112751795 B CN 112751795B CN 201911049409 A CN201911049409 A CN 201911049409A CN 112751795 B CN112751795 B CN 112751795B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
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- H—ELECTRICITY
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- H—ELECTRICITY
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- H04L25/08—Modifications for reducing interference; Modifications for reducing effects due to line faults ; Receiver end arrangements for detecting or overcoming line faults
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Abstract
The disclosure discloses an antenna array and a radio receiving method, and belongs to the technical field of radio receiving. Receiving wireless carrier signals by adopting array elements of an antenna array, wherein the antenna array comprises N array elements, and N is a positive integer greater than 2; carrier components in the frequency spectrums of the wireless carrier signals received by the array elements are removed respectively to obtain N baseband signals, wherein the baseband signals comprise baseband components in the frequency spectrums of the corresponding wireless carrier signals; and combining the N baseband signals and outputting the combined radio signals. The antenna array and the radio receiving method provided by the embodiment of the disclosure can be used for indiscriminately receiving radio signals from any direction.
Description
Technical Field
The present disclosure relates to the field of radio receiving technologies, and in particular, to an antenna array and a radio receiving method.
Background
Antennas are an integral part of radio receiving systems, and their technological development has undergone a process from a single antenna to an antenna array (also called antenna array). The antenna array is to feed and spatially arrange two or more single antennas operating at the same frequency according to certain requirements. The antenna radiating elements that make up an antenna array are called array elements.
The antenna array comprises a phased array. The working principle of the phased array for radio receiving is that a plurality of antenna array elements are arranged in space according to a certain rule to sense space electromagnetic energy, then the energy sensed by each antenna array element is combined after being weighted in phase, and the weighting coefficient of each array element is changed, so that radio signals from a certain receiving direction are enhanced at a combining output end, and radio signals from other directions are restrained.
In carrying out the present disclosure, the inventors have found that the prior art has at least the following problems:
phased array receiving radios are directionally selective, whereas in some specific applications, non-directionally selective receiving radios are required, such as receiving satellite signals on high speed aircraft reception, where the antenna beams cannot be aligned in a timely and efficient manner with phased array receiving radios, which can easily cause communication to be turned off.
Disclosure of Invention
The embodiment of the disclosure provides an antenna array and a radio receiving method, which can perform indifferently receiving radio signals from any direction. The technical scheme is as follows:
in one aspect, there is provided a radio receiving method of an antenna array, the radio receiving method of the antenna array including:
receiving wireless carrier signals by adopting array elements of an antenna array, wherein the antenna array comprises N array elements, and N is a positive integer greater than 2;
carrier components in the frequency spectrums of the wireless carrier signals received by the array elements are removed respectively to obtain N baseband signals, wherein the baseband signals comprise baseband components in the frequency spectrums of the corresponding wireless carrier signals;
and combining the N baseband signals and outputting the combined radio signals.
Optionally, the removing carrier components in the frequency spectrum of the wireless carrier signal received by each array element includes:
generating the same-frequency signal of the wireless carrier signal received by the ith array element in the antenna array, wherein i is a positive integer and is less than or equal to N;
and removing carrier components in the frequency spectrum of the wireless carrier signal received by the ith array element based on the same-frequency signal.
Optionally, the phase of the wireless carrier signal received by the ith array element is the same as the phase of the same-frequency signal,
the removing carrier components in the frequency spectrum of the wireless carrier signal received by the ith array element based on the same frequency signal comprises:
multiplying the wireless carrier signal received by the ith array element with the same-frequency signal to obtain an ith baseband signal.
Optionally, the phase of the wireless carrier signal received by the ith array element is different from the phase of the same-frequency signal,
the removing carrier components in the frequency spectrum of the wireless carrier signal received by the ith array element based on the same frequency signal comprises:
multiplying the wireless carrier signal received by the ith array element with the same-frequency signal to obtain an ith demodulation signal;
and filtering the ith demodulation signal to obtain an ith baseband signal.
Optionally, before removing carrier components in the frequency spectrum of the wireless carrier signal received by each array element, the radio receiving method of the antenna array further includes:
filtering the wireless carrier signals received by the ith array element to select carrier signals of a target frequency band;
and amplifying the filtered wireless carrier signal of the ith array element.
In another aspect, there is provided an antenna array comprising:
n array elements, N is a positive integer greater than 2;
the array element is used for receiving wireless carrier signals;
the removing module is used for respectively removing carrier components in the frequency spectrums of the wireless carrier signals received by the array elements to obtain N baseband signals, wherein the baseband signals comprise baseband components in the frequency spectrums of the corresponding wireless carrier signals;
and the combining module is used for combining the N baseband signals and outputting combined radio signals.
Optionally, the removing module is configured to,
generating the same-frequency signal of the wireless carrier signal received by the ith array element in the antenna array, wherein i is a positive integer and is less than or equal to N;
and removing carrier components in the frequency spectrum of the wireless carrier signal received by the ith array element based on the same-frequency signal.
Optionally, the phase of the wireless carrier signal received by the ith array element is the same as the phase of the same-frequency signal, and the removing module is configured to,
multiplying the wireless carrier signal received by the ith array element with the same-frequency signal to obtain an ith baseband signal.
Optionally, the phase of the wireless carrier signal received by the ith array element is different from the phase of the same-frequency signal, and the removing module is configured to,
multiplying the wireless carrier signal received by the ith array element with the same-frequency signal to obtain an ith demodulation signal;
and filtering the ith demodulation signal to obtain an ith baseband signal.
Optionally, the antenna array further comprises a filtering and amplifying module,
the filtering and amplifying module is used for filtering the wireless carrier signals received by the ith array element to select carrier signals of a target frequency band; and amplifying the filtered wireless carrier signal of the ith array element.
The technical scheme provided by the embodiment of the disclosure has the beneficial effects that:
the carrier components in the frequency spectrums of wireless carrier signals received by all array elements in an antenna array are removed respectively to obtain N baseband signals, then the N baseband signals are combined, and the combined radio signals are output; because the signals arriving at the antenna array from any direction do not have carrier component participation in combination, the signal amplitude enhancement and/or cancellation caused by the carrier interference effect is avoided, and thus, the combined output amplitude only depends on whether the multipath baseband signals without the carrier can keep in-phase superposition; the baseband frequency is far smaller than the carrier frequency, the wavelength is far greater than the array element spacing, so when signals arriving from different directions are received and output by the array elements, although the baseband delay difference is the same as the carrier delay difference, the baseband phase difference is far smaller than the carrier phase difference, and therefore the combination can be carried out in a near-in-phase mode and is irrelevant to the signal arrival direction, the combined output baseband can obtain the same increasing effect as the common phased array and is not limited by the signal arrival direction, and the indiscriminate reception of radio signals from any direction is realized.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings required for the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present disclosure, and other drawings may be obtained according to these drawings without inventive effort for a person of ordinary skill in the art.
Fig. 1 and 2 are flowcharts of a radio receiving method of an antenna array provided in an embodiment of the present disclosure;
fig. 3 is an equivalent antenna direction perspective view of an omni-directional antenna array provided by an embodiment of the present disclosure;
fig. 4 and 5 are block diagrams of structures of an antenna array provided by an embodiment of the present disclosure;
fig. 6 is a schematic diagram of the structure of a phased array provided by an embodiment of the disclosure.
Detailed Description
For the purposes of clarity, technical solutions and advantages of the present disclosure, the following further details the embodiments of the present disclosure with reference to the accompanying drawings.
Fig. 1 is a flowchart of a radio receiving method of an antenna array according to an embodiment of the present disclosure. Referring to fig. 1, the method flow includes the following steps.
In this embodiment, carrier components in the frequency spectrums of wireless carrier signals received by each array element in an antenna array are removed respectively to obtain N baseband signals, and then the N baseband signals are combined to output a combined radio signal; because the signals arriving at the antenna array from any direction do not have carrier component participation in combination, the signal amplitude enhancement and/or cancellation caused by the carrier interference effect is avoided, and thus, the combined output amplitude only depends on whether the multipath baseband signals without the carrier can keep in-phase superposition; the baseband frequency is far smaller than the carrier frequency, the wavelength is far greater than the array element spacing, so when signals arriving from different directions are received and output by the array elements, although the baseband delay difference is the same as the carrier delay difference, the baseband phase difference is far smaller than the carrier phase difference, and therefore the combination can be carried out in a near-in-phase mode and is irrelevant to the signal arrival direction, the combined output baseband can obtain the same increasing effect as a common phased array without being limited by the signal arrival direction, the indiscriminate receiving of radio signals from any direction is realized, and meanwhile, the same increasing effect as the common phased array is achieved, and the high gain advantage of the array antenna can be obtained.
Fig. 2 is a flowchart of a radio receiving method of an antenna array according to an embodiment of the present disclosure. Referring to fig. 2, the method flow includes the following steps.
Each array element in the antenna array senses radio wave electromagnetic energy in the surrounding space in real time. The array element outputs the sensed radio wave electromagnetic energy as a wireless carrier signal received by the array element.
The wireless carrier signals received by each array element are preprocessed to filter out unnecessary stray signals, select signals of a required frequency band and inhibit interference of interference components of other frequency bands. The preprocessing process of step 202 is described below by taking the ith element of the N elements as an example, where i is a positive integer and i is less than or equal to N. The preprocessing process may include the following steps, for example.
Step 202a, filtering the wireless carrier signal received by the ith array element to select a carrier signal of the target frequency band.
The filtering mode can be band-pass filtering or zero intermediate frequency low-pass filtering, and is mainly used for filtering interference frequency band signals in the received signals.
Step 202b, amplifying the filtered wireless carrier signal of the ith array element.
The amplification process can facilitate the execution of the subsequent removal of the carrier component.
Step 202b is an optional step of step 202, and step 202 may include only step 202a. Further, in this embodiment, step 202 may be an optional step, and step 203 may be performed directly after step 201.
The frequency of the wireless carrier signal received by the ith array element is a known parameter and is formulated according to design requirements. The frequency of the same-frequency signal is the same as the frequency of the wireless carrier signal received by the ith array element in the antenna array, and the phase of the same-frequency signal can be the same as or different from the phase of the wireless carrier signal received by the ith array element in the antenna array. When the phase of the same-frequency signal is the same as the phase of the wireless carrier signal received by the ith array element in the antenna array, a phase-locked loop can be adopted to automatically track the frequency and the phase of the wireless carrier signal received by the ith array element, and the same-frequency and same-phase signal is generated. When the phase of the same-frequency signal is different from the phase of the wireless carrier signal received by the ith array element in the antenna array, the generated same-frequency signal is the carrier signal of the determined wireless carrier signal received by the ith array element after being delayed for a preset time length.
After removing the carrier component in the spectrum of the wireless carrier signal, the spectrum of the wireless carrier signal received by the ith array element only retains the baseband component, i.e. the useful information part carried by the carrier signal.
Based on the relationship between the phase of the co-frequency signal and the phase of the wireless carrier signal received by the ith array element, the embodiments of the present disclosure provide two carrier component removal methods, where the first carrier component removal method is a phase-locked extraction method, and the second carrier component removal method is a delay-phase method, which are described below.
When the phase of the co-frequency signal is the same as the phase of the wireless carrier signal received by the ith array element in the antenna array, a first carrier component removing manner may be adopted, and step 204 may include: multiplying the wireless carrier signal received by the ith array element with the same frequency signal to obtain the ith baseband signal.
And automatically tracking the frequency and the phase of the wireless carrier signal received by the ith array element by adopting a phase-locked loop, and generating a local carrier signal which is the same in frequency and phase as the wireless carrier signal received by the ith array element. When multiplied by a signal of the same frequency and phase, the resulting dc voltage is proportional to the amplitude of the useful signal (baseband component), which in an amplitude modulated system is the useful signal (which has been demodulated from the carrier).
When the phase of the co-frequency signal is different from the phase of the wireless carrier signal received by the ith array element in the antenna array, a second carrier component removal method may be adopted, and step 204 may include the following steps 204-2-a and 204-2-b.
Step 204-2-a, multiplying the radio carrier signal received by the ith array element with the same frequency signal to obtain the ith demodulation signal.
Based on the frequency and the phase of the wireless carrier signal received by the ith array element, a local carrier signal is generated, wherein the local carrier signal is the carrier signal of the wireless carrier signal received by the ith array element after being delayed for a preset time length.
Step 204-2-b, filtering the ith demodulation signal to obtain an ith baseband signal.
If the radio carrier signal entering the ith array element is S i (t), if the gain of the ith element is G (the gain of the element, that is, the antenna gain, is a known parameter), the expression of the wireless carrier signal entering the ith element is the modulated signal shown in the expression (1).
S i (t)＝GA i (t)cos[(w 0 t+φ(t)] (1)
In the formula (1), A i The amplitude, w, of the wireless carrier signal received by the ith array element at the moment t 0 t+phi (t) is the phase of the wireless carrier signal received by the ith element at time t.
Assuming that the predetermined time period is τ, the aforementioned generated local carrier signal (same frequency, different phase signal) may be represented as equation (2).
S i (t-τ)＝GA i (t-τ)cos[(w 0 (t-τ)+φ(t-τ)] (2)
The i-th demodulated signal obtained in step 204-2-c can be represented as shown in equation (3).
S i (t)S i (t-τ)＝G 2 A i (t-τ)cos[(w 0 (t-τ)+φ(t-τ)]A i (t)cos[(w 0 t+φ(t)]
＝G 2 /2A i (t)A i (t-τ)cos(w 0 τ+φ(t)-φ(t-τ)+G 2 /2A i (t)A i (t-τ)cos(w 0 (2t-τ)+φ(t)+φ(t-τ) (3)
G in the formula (3) 2 /2A i (t)A i (t-τ)cos(w 0 (2 t- τ) +φ (t- τ) and filtering to obtain the ith baseband signal. The ith baseband signal obtained in step 204-2-d may be represented as equation (4).
Y i (t)＝G 2 /2A i (t)A i (t-τ)cos(w 0 τ+φ(t)-φ(t-τ) (4)
In addition to the above two removal manners, other removal manners may be used to remove carrier components in the spectrum of the wireless carrier signal, which is not limited by the embodiments of the present disclosure. It should be noted that, the removal method applied in the embodiments of the present disclosure needs to be capable of completely removing the carrier component in the spectrum of the wireless carrier signal (both removal methods can completely remove the carrier component in the spectrum of the wireless carrier signal). In a signal demodulation method, for example, a signal quadrature decomposition method, which cannot completely remove carrier components in the spectrum of a wireless carrier signal, although a quadrature baseband of a carrier is obtained, in reality, this quadrature baseband carries carrier phase information, and thus is not "carrier removed" in a true sense, and is not suitable for the embodiments of the present disclosure.
The step 203 and the step 204 implement that carrier components in the frequency spectrums of the wireless carrier signals received by each array element are removed respectively, so as to obtain N baseband signals, where the baseband signals include baseband components in the frequency spectrums of the corresponding wireless carrier signals.
Step 205 may include: the N baseband signals are directly added to obtain the sum of the signals, and the sum of the signals is used as the total signal of the antenna array to be output.
Assuming that the i-th baseband signal is a signal shown in equation (4), the combined radio signal is shown in equation (5).
As can be seen from equation (5), the radio signal output by the antenna array is related to gain, amplitude, phase, and not related to the incoming wave direction.
Fig. 3 is an equivalent antenna direction perspective view of an omni-directional antenna array provided in an embodiment of the present disclosure. As can be seen from fig. 3, when an omni-directional antenna array is adopted, the receiving directions of the antennas are considered, and the selectivity of the antenna directions is avoided. If the non-omni-directional antenna array element is adopted, the actual receiving direction diagram can be obtained by multiplying the antenna array element direction diagram by the diagram by using the direction diagram multiplication. That is, the receive pattern of the antenna array of the present disclosure is equivalent to the antenna element pattern employed, regardless of the array arrangement and the amount of phase shift of the output signals of the elements prior to synthesis.
In this embodiment, carrier components in the frequency spectrums of wireless carrier signals received by each array element in an antenna array are removed respectively to obtain N baseband signals, and then the N baseband signals are combined to output a combined radio signal; because the signals arriving at the antenna array from any direction do not have carrier component participation in combination, the signal amplitude enhancement and/or cancellation caused by the carrier interference effect is avoided, and thus, the combined output amplitude only depends on whether the multipath baseband signals without the carrier can keep in-phase superposition; the baseband frequency is far smaller than the carrier frequency, the wavelength is far greater than the array element spacing, so when signals arriving from different directions are received and output by the array elements, although the baseband delay difference is the same as the carrier delay difference, the baseband phase difference is far smaller than the carrier phase difference, and therefore the combination can be carried out in a near-in-phase mode and is irrelevant to the signal arrival direction, the combined output baseband can obtain the same increasing effect as a common phased array without being limited by the signal arrival direction, the indiscriminate receiving of radio signals from any direction is realized, and meanwhile, the same increasing effect as the common phased array is achieved, and the high gain advantage of the array antenna can be obtained.
Fig. 4 is a block diagram of an antenna array according to an embodiment of the present disclosure. Referring to fig. 4, the antenna array includes: n array elements 41, a removing module 42 and a combining module 43, N being a positive integer greater than 2.
The array element 41 is configured to receive a radio carrier signal.
The removing module 42 is configured to remove carrier components in the frequency spectrums of the wireless carrier signals received by the array elements 41, respectively, to obtain N baseband signals, where the baseband signals include baseband components in the frequency spectrums of the corresponding wireless carrier signals.
The combining module 43 is configured to combine the N baseband signals and output a combined radio signal.
The removal module 42 includes N removal units 42a.
Illustratively, the ith removing unit 42a is configured to determine the frequency and phase of the wireless carrier signal received by the ith element in the antenna array, where i is a positive integer and i is less than or equal to N; and removing carrier components in the frequency spectrum of the wireless carrier signal received by the ith array element based on the determined frequency and phase of the wireless carrier signal received by the ith array element.
Accordingly, in the first alternative embodiment, the ith removing unit 42a is configured to generate a first local carrier signal based on the frequency and the phase of the wireless carrier signal received by the determined ith array element, where the wireless carrier signal received by the determined ith array element is the same frequency and the same phase as the first local carrier signal; multiplying the wireless carrier signal received by the determined ith array element with the first local carrier signal to obtain an ith baseband signal.
Accordingly, in a second alternative embodiment, the ith removing unit 42a is configured to determine the gain of the ith element; generating a second local carrier signal based on the determined frequency and phase of the wireless carrier signal received by the ith array element and the gain of the ith array element, wherein the second local carrier signal is the carrier signal of the determined wireless carrier signal received by the ith array element after delaying for a preset time length; multiplying the wireless carrier signal received by the determined ith array element with a second local carrier signal to obtain an ith demodulation signal; and filtering the ith demodulation signal to obtain an ith baseband signal.
Fig. 5 is a block diagram of an antenna array according to an embodiment of the present disclosure. Referring to fig. 5, the antenna array also illustratively includes a filter amplification module 44.
The filter amplification module 44 includes N filter amplification units 44a.
The ith filtering amplifying unit 44a may be configured to filter the wireless carrier signal received by the ith array element to select a carrier signal in the target frequency band; and amplifying the filtered wireless carrier signal of the ith array element.
Fig. 6 is a schematic diagram of the structure of a phased array provided by an embodiment of the disclosure. Referring to fig. 6, the phased array may include N array elements 61, an attenuator 62, a phase shifter 63, and a radio frequency power combining module 64. In comparison to the antenna arrays (fig. 4 or fig. 5) provided by the embodiments of the present disclosure, both employ multiple array elements to form an array to receive spatial radio signals. One of the differences is that the phased array receiving system adopts a phase shifter and an attenuator to carry out phase and amplitude weighting on the output signal of each array element; the antenna array provided by the disclosure does not adopt a phase shifter and an attenuator, does not control the amplitude and the phase of the output of the antenna unit, and instead, the removing module removes carrier components contained in the output signals of the array elements. The second difference is that the phased array receiving system adopts a radio frequency power synthesizer to synthesize the received signals after the multipath phase weights, and the array received radio frequency signal output is obtained; in the present disclosure, a combining module is used to combine the received outputs of the antenna units from which the carrier component is removed, so as to obtain an array received baseband signal output.
In terms of hardware implementation, the antenna array element 41 may be an existing antenna array element; the filtering and amplifying module 44, the removing module 42 and the combining module 43 can be implemented by adopting a computer for simulation. The computer may take the structure of an existing computer, for example, the computer includes a Central Processing Unit (CPU), a system memory including a Random Access Memory (RAM) and a Read Only Memory (ROM), and a system bus connecting the system memory and the central processing unit. The computer also includes a mass storage device for storing an operating system, application programs, and other program modules. The mass storage device is connected to the central processing unit through a mass storage controller (not shown) connected to the system bus. The mass storage device and its associated computer-readable media provide non-volatile storage for a computer. That is, the mass storage device may include a computer readable medium such as a hard disk or CD-ROM drive. The above-described system memory and mass storage devices may be collectively referred to as memory. The memory also includes one or more programs, one or more programs stored in the memory and configured to be executed by the CPU. The one or more programs include instructions for implementing the respective functions of the filter amplification module 44, the removal module 42, and the merge module 43. The antenna array shown in fig. 4 or 5 may be mounted on a terminal device suitable for use on small aerial platforms, such as high speed aircraft.
In this embodiment, carrier components in the frequency spectrums of wireless carrier signals received by each array element in an antenna array are removed respectively to obtain N baseband signals, and then the N baseband signals are combined to output a combined radio signal; because the signals arriving at the antenna array from any direction do not have carrier component participation in combination, the signal amplitude enhancement and/or cancellation caused by the carrier interference effect is avoided, and thus, the combined output amplitude only depends on whether the multipath baseband signals without the carrier can keep in-phase superposition; the baseband frequency is far smaller than the carrier frequency, the wavelength is far greater than the array element spacing, so when signals arriving from different directions are received and output by the array elements, although the baseband delay difference is the same as the carrier delay difference, the baseband phase difference is far smaller than the carrier phase difference, and therefore the combination can be carried out in a near-in-phase mode and is irrelevant to the signal arrival direction, the combined output baseband can obtain the same increasing effect as a common phased array without being limited by the signal arrival direction, the indiscriminate receiving of radio signals from any direction is realized, and meanwhile, the same increasing effect as the common phased array is achieved, and the high gain advantage of the array antenna can be obtained.
It should be noted that: the antenna array provided in the above embodiment is only exemplified by the division of the above functional modules when receiving radio, and in practical application, the above functional allocation may be performed by different functional modules according to needs, that is, the internal structure of the device is divided into different functional modules to perform all or part of the functions described above. In addition, the antenna array and the radio receiving method embodiment of the antenna array provided in the foregoing embodiments belong to the same concept, and specific implementation processes thereof are detailed in the method embodiment and are not repeated herein.
It will be understood by those skilled in the art that all or part of the steps for implementing the above embodiments may be implemented by hardware, or may be implemented by a program for instructing relevant hardware, where the program may be stored in a computer readable storage medium, and the storage medium may be a read-only memory, a magnetic disk or an optical disk, etc.
The foregoing description of the preferred embodiments of the present disclosure is not intended to limit the disclosure, but rather to enable any modification, equivalent replacement, improvement or the like, which fall within the spirit and principles of the present disclosure.
Claims (4)
1. A radio receiving method of an antenna array, characterized in that the radio receiving method of the antenna array comprises:
receiving wireless carrier signals by adopting array elements of an antenna array, wherein the antenna array is an omni-directional antenna array, the antenna array comprises N array elements, and N is a positive integer greater than 2;
carrier components in the frequency spectrums of wireless carrier signals received by the array elements are removed respectively to obtain N baseband signals, wherein the baseband signals comprise baseband components in the frequency spectrums of corresponding wireless carrier signals, the frequency of the baseband signals is smaller than that of the wireless carrier signals, and the wavelength of the baseband signals is larger than the interval between the array elements;
directly adding the N baseband signals to obtain a signal sum, and outputting the signal sum as a total signal of the antenna array, wherein the N baseband signals are directly added in a near-in-phase mode and are irrelevant to a signal arrival direction;
the removing carrier components in the frequency spectrum of the wireless carrier signal received by each array element respectively includes:
if the phase of the wireless carrier signal received by the ith array element is the same as the phase of the same-frequency signal, automatically tracking the frequency and the phase of the wireless carrier signal received by the ith array element in the antenna array by adopting a phase-locked loop, and generating a local carrier signal with the same frequency and the same phase as the wireless carrier signal received by the ith array element in the antenna array, wherein i is a positive integer and is less than or equal to N; multiplying the wireless carrier signal received by the ith array element with the same-frequency signal to obtain an ith baseband signal;
if the phase of the wireless carrier signal received by the ith array element is different from the phase of the same-frequency signal, generating a carrier signal of the wireless carrier signal received by the ith array element in the antenna array after delaying for a preset time length, wherein the carrier signal is used as the same-frequency signal of the wireless carrier signal received by the ith array element in the antenna array; multiplying the wireless carrier signal received by the ith array element with the same-frequency signal to obtain an ith demodulation signal; and filtering the ith demodulation signal to obtain an ith baseband signal.
2. The radio receiving method of an antenna array according to claim 1, wherein before said removing carrier components in the frequency spectrum of the wireless carrier signal received by each of said array elements, respectively, the radio receiving method of an antenna array further comprises:
filtering the wireless carrier signals received by the ith array element to select carrier signals of a target frequency band;
and amplifying the filtered wireless carrier signal of the ith array element.
3. An antenna array, wherein the antenna array is an omni-directional antenna array, the antenna array comprising:
n array elements, N is a positive integer greater than 2;
the array element is used for receiving wireless carrier signals;
the removing module is used for respectively removing carrier components in the frequency spectrums of the wireless carrier signals received by the array elements to obtain N baseband signals, wherein the baseband signals comprise baseband components in the frequency spectrums of the corresponding wireless carrier signals, the frequency of the baseband signals is smaller than that of the wireless carrier signals, and the wavelength of the baseband signals is larger than the interval between the array elements;
the combining module is used for directly adding the N baseband signals to obtain a sum of signals, and outputting the sum of the signals as a summarized signal of the antenna array, wherein the N baseband signals are directly added in a near-in-phase mode and are irrelevant to a signal arrival direction;
the removal module is used for the purpose of,
if the phase of the wireless carrier signal received by the ith array element is the same as the phase of the same-frequency signal, automatically tracking the frequency and the phase of the wireless carrier signal received by the ith array element in the antenna array by adopting a phase-locked loop, and generating a local carrier signal with the same frequency and the same phase as the wireless carrier signal received by the ith array element in the antenna array, wherein i is a positive integer and is less than or equal to N; multiplying the wireless carrier signal received by the ith array element with the same-frequency signal to obtain an ith baseband signal;
if the phase of the wireless carrier signal received by the ith array element is different from the phase of the same-frequency signal, generating a carrier signal of the wireless carrier signal received by the ith array element in the antenna array after delaying for a preset time length, wherein the carrier signal is used as the same-frequency signal of the wireless carrier signal received by the ith array element in the antenna array; multiplying the wireless carrier signal received by the ith array element with the same-frequency signal to obtain an ith demodulation signal; and filtering the ith demodulation signal to obtain an ith baseband signal.
4. The antenna array of claim 3, further comprising a filter amplification module,
the filtering and amplifying module is used for filtering the wireless carrier signals received by the ith array element to select carrier signals of a target frequency band; and amplifying the filtered wireless carrier signal of the ith array element.
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101133659A (en) * | 2005-06-08 | 2008-02-27 | 中兴通讯股份有限公司 | Intelligent antenna implementing method based on software radio and implement system thereof |
| CN101741450A (en) * | 2008-11-21 | 2010-06-16 | 北京大学 | Uplink signal reception method and system in MIMO system |
| US8013791B1 (en) * | 2008-07-30 | 2011-09-06 | Iowa State University Research Foundation, Inc. | Phased array system using baseband phase shifting |
| CN102624431A (en) * | 2012-03-13 | 2012-08-01 | 中兴通讯股份有限公司 | Method and system for improving communication capacity of multiple antennae at vehicle-mounted terminal |
| CN106452549A (en) * | 2016-10-11 | 2017-02-22 | 西安华讯天基通信技术有限公司 | ADS-B long-distance anti-interference anti-deception receiving method and apparatus based on intelligent antenna |
| CN109831240A (en) * | 2018-12-18 | 2019-05-31 | 西安思丹德信息技术有限公司 | A kind of anti-interference airborne data link system based on array antenna |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100538394C (en) * | 2007-04-06 | 2009-09-09 | 清华大学 | A kind of wideband radar and formation method thereof that adopts the multi-sending and multi-receiving frequency division signal |
| US20090233644A1 (en) * | 2008-03-11 | 2009-09-17 | Matsushita Electric Industrial Co., Ltd. | Multiple carrier radio systems and methods employing polar active antenna elements |
-
2019
- 2019-10-31 CN CN201911049409.1A patent/CN112751795B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101133659A (en) * | 2005-06-08 | 2008-02-27 | 中兴通讯股份有限公司 | Intelligent antenna implementing method based on software radio and implement system thereof |
| US8013791B1 (en) * | 2008-07-30 | 2011-09-06 | Iowa State University Research Foundation, Inc. | Phased array system using baseband phase shifting |
| CN101741450A (en) * | 2008-11-21 | 2010-06-16 | 北京大学 | Uplink signal reception method and system in MIMO system |
| CN102624431A (en) * | 2012-03-13 | 2012-08-01 | 中兴通讯股份有限公司 | Method and system for improving communication capacity of multiple antennae at vehicle-mounted terminal |
| CN106452549A (en) * | 2016-10-11 | 2017-02-22 | 西安华讯天基通信技术有限公司 | ADS-B long-distance anti-interference anti-deception receiving method and apparatus based on intelligent antenna |
| CN109831240A (en) * | 2018-12-18 | 2019-05-31 | 西安思丹德信息技术有限公司 | A kind of anti-interference airborne data link system based on array antenna |
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