A directional beam omnidirectional angle scanning indoor base station antenna

Abstract

The application discloses a directional beam omnibearing angle scanning indoor base station antenna, which comprises a control module, a processing module electrically connected to the control module, a modulation module electrically connected to the processing module, a power control module electrically connected to the modulation module, a first power amplifier electrically connected to the power control module, an encryptor electrically connected to the first power amplifier, a feeding circuit electrically connected to the encryptor and an array oscillator electrically connected to the feeding circuit; the processing module is also provided with a frequency division module, the frequency division module is electrically connected with a demodulation module, the demodulation module is electrically connected with a second power amplifier, a decoder is electrically connected to the second power amplifier, and a filter is electrically connected to the decoder; the application can realize encrypted transmission, improve the power of communication, realize modulation and demodulation and integrate the whole electronic equipment, and has a small structure.

Description

Technical Field

[0001] This invention belongs to the field of indoor antenna technology, specifically relating to a directional beam omnidirectional scanning indoor base station antenna. Background Technology

[0002] Indoor ceiling-mounted antennas are a type of antenna used in mobile communication systems, primarily for indoor signal coverage. In the 3G era, indoor voice, data, and high-speed multimedia services are densely distributed, making indoor distribution systems crucial for 3G network construction and optimization. Although the internal structure of ceiling-mounted antennas is small, its design, based on broadband antenna theory and aided by computer-aided design and network analyzer debugging, effectively meets VSWR requirements across a very wide operating frequency band. Indoor ceiling-mounted antennas are low-gain antennas; however, various indoor antennas on the market still suffer from various problems.

[0003] For example, the SDMA method and base station for indoor multi-antenna coverage disclosed in the authorization announcement number CN101938304A, although it has improved the throughput of the indoor coverage cell with multi-antennas and achieved the goal of increasing the single carrier throughput by modifying the software without adding hardware cards, has not solved the problems of existing indoor antennas still requiring external communication equipment for connection, resulting in a complicated structure, inconvenience in use, and inability to effectively achieve security protection and stable transmission of communication information. Therefore, we propose a directional beam omnidirectional angle scanning indoor base station antenna. Summary of the Invention

[0004] The purpose of this invention is to provide a directional beam omnidirectional scanning indoor base station antenna to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a directional beam omnidirectional scanning indoor base station antenna, comprising a control module, a processing module electrically connected to the control module, a modulation module electrically connected to the processing module, a power control module electrically connected to the modulation module, a first power amplifier electrically connected to the power control module, an encryption device electrically connected to the first power amplifier, a feed circuit electrically connected to the encryption device, and an array vibrator electrically connected to the feed circuit. The processing module is used to effectively process data information, improving the accuracy and security of the data information. The block is used to implement the process of loading the baseband signal onto a certain carrier wave, that is, loading the effective signal of the transmitted information onto a high-frequency sine or cosine wave. The power control module is used to maintain the antenna signal level at a basically equal level and the communication quality at a certain receiving level, and to control the power of the mobile station. The first power amplifier is used to effectively amplify the communication signal to ensure that the communication signal is not lost or weak during transmission. The encryptor is used to encrypt the communication information to improve the security of the communication information and prevent the communication information from being lost or stolen during transmission.

[0006] The processing module is also electrically connected to a frequency divider module, which in turn is electrically connected to a demodulation module. The demodulation module is electrically connected to a second power amplifier, which is electrically connected to a decoder. The decoder is electrically connected to a filter, which is electrically connected to the feed circuit. The frequency divider module separates the communication information into different components, facilitating reception and processing by the processing module and subsequent transmission of the communication information to the mobile device. The demodulation module obtains the baseband signal from the modulated signal at the receiving end using signal processing techniques. The second power amplifier amplifies the received communication information, increasing its strength and preventing interference that could hinder reception. The decoder decodes the received communication signal for subsequent identification and processing. The filter performs initial filtering of the received communication information, effectively removing noise and preventing it from interfering with the transmission of the communication information.

[0007] Preferably, the control module is electrically connected to a voltage regulating module, and the voltage regulating module is electrically connected to a power supply module. The power supply module uses the mains grid voltage to achieve effective power supply operation for the system.

[0008] Preferably, the voltage regulating module includes a step-down circuit for regulating the voltage of the power supply module, a rectifier circuit for converting AC voltage to DC voltage, a voltage regulator circuit for stabilizing the voltage output, a filter circuit for filtering AC voltage from the DC voltage, and a surge protection circuit for protecting downstream electronic equipment.

[0009] Preferably, the control module is electrically connected to an auxiliary module, which includes indicator lights for displaying the operating status and an audible and visual alarm for providing warnings in abnormal situations. The indicator lights include a power supply indicator, a communication indicator, and a fault indicator.

[0010] Preferably, the control module further includes a memory for storing data information, including a ROM memory for storing the system's running program body and a RAM memory for storing the system's data information.

[0011] Preferably, the processing module includes a receiving unit for acquiring data information, a conversion module for converting data information, a gain circuit for amplifying data information, and a filtering unit for filtering out channel effects from data information.

[0012] Preferably, the encryptor and the decoder employ a hash algorithm: the hash function is calculated as follows: address = H[key];

[0013] The definition of a hash algorithm is as follows:

[0014] A hash function (output length l) consists of two algorithms (Gen, H) from two PPT slides;

[0015] Gen: A probabilistic algorithm that takes a security parameter 1n as input and outputs a key s, assuming that the security parameter 1n is implicit in s;

[0016] H: Take a key s and a 01 string x∈{0,1}* as input, and output Hs(x)∈{0,1}l(n), where n is a security parameter implicit in s;

[0017] If H is defined with input fixed as x∈{0,1}l'(n) and l'(n)>l(n), then such a hash function is called a fixed-length hash function, and the algorithm H is called a compression function.

[0018] Security of hash functions:

[0019] Anti-second preimage: Given a s and a random x, it is computationally difficult to find that x' ≠ x and satisfy Hs(x') = Hs(x) for an adversary on a PPT.

[0020] Antigen image: Given an s and a random y, it is computationally difficult to find a value of x that satisfies Hs(x) = y for an adversary on a PPT.

[0021] Preferably, the demodulation module and the modulation module employ single-sideband amplitude modulation and demodulation;

[0022] The baseband signal f is an angular frequency of ω. m A cosine signal with amplitude A and initial phase of 0, and a carrier g with angular frequency ω. c (much greater than w) m A cosine wave with an amplitude of 1 and an initial phase of 0 is transmitted by loading the baseband signal onto the carrier wave at the transmitting end, resulting in the modulated signal S.

[0023]

[0024] At the receiving end, multiplying the single-sideband signal by the carrier wave yields the demodulated signal:

[0025]

[0026] Then, the signal m is low-pass filtered, and the amplitude of the filtered signal is multiplied by 4, so that the baseband signal can be completely extracted at the receiving end.

[0027] In fact, the formula Asinw in m Let t be the Hilbert-Huang transform of the baseband signal f. Therefore, for any signal f, the modulated signal of the single-sideband can be obtained by the following formula:

[0028]

[0029] Among them, f H It is the Hilbert-Huang transform of the signal f.

[0030] Preferably, the power control module adopts reverse power control, which is further divided into open-loop power control and closed-loop power control. The closed-loop power control is further subdivided into outer-loop power control and inner-loop power control. The outer-loop power control controls the transmit signal power of the other transmitter based on the frame error rate after demodulation.

[0031] Preferably, the filter and the filtering unit employ a fifth-order FIR low-pass filter, and the calculation formula is as follows:

[0032]

[0033] x (n) For the input signal, k (k) Here are the FIR filter coefficients, y(n) is the filtered signal, and N represents the number of taps in the FIR filter, with the filter order being N-1.

[0034] Compared with the prior art, the beneficial effects of the present invention are:

[0035] In use, this invention transmits and receives communication information through receiving and transmitting channels. During transmission and reception, a decoder and an encryptor are used to encrypt and decode the communication information, improving the security of the information during transmission. A modulation module and a demodulation module are used to modulate and demodulate the communication information, facilitating its transmission. A power control module is used to regulate the power of the transmitted communication information, increasing the information strength. This allows the feeding circuit and array vibrator to effectively transmit signals, and all circuits are concentrated within the antenna, reducing equipment construction and improving ease and speed of use. Attached Figure Description

[0036] Figure 1 This is a schematic diagram of the system structure of the present invention. Detailed Implementation

[0037] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0038] Please see Figure 1This invention provides a technical solution: a directional beam omnidirectional scanning indoor base station antenna, including a control module, a processing module electrically connected to the control module, a modulation module electrically connected to the processing module, a power control module electrically connected to the modulation module, a first power amplifier electrically connected to the power control module, an encryption device electrically connected to the first power amplifier, a feed circuit electrically connected to the encryption device, and an array vibrator electrically connected to the feed circuit. The processing module is used to effectively process data information, improving the accuracy and security of the data information. The modulation module is used for... The process of loading a baseband signal onto a carrier wave involves loading the effective signal for transmitting information onto a high-frequency sine or cosine wave. The power control module is used to maintain the antenna signal level at a relatively equal level and the communication quality at a certain receiving level, and to control the power of the mobile station. The first power amplifier is used to effectively amplify the communication signal to prevent loss or weak signal during transmission. The encryptor is used to encrypt the communication information to improve its security and prevent loss or theft during transmission.

[0039] The processing module is also electrically connected to a frequency divider module, which in turn is electrically connected to a demodulation module. The demodulation module is electrically connected to a second power amplifier, which is electrically connected to a decoder. The decoder is electrically connected to a filter, which is electrically connected to the feed circuit. The frequency divider module separates the communication information into different components, facilitating reception and processing by the processing module and subsequent transmission of the communication information to the mobile device. The demodulation module obtains the baseband signal from the modulated signal at the receiving end using signal processing techniques. The second power amplifier amplifies the received communication information, increasing its strength and preventing interference that could hinder reception. The decoder decodes the received communication signal for subsequent identification and processing. The filter performs initial filtering of the received communication information, effectively removing noise and preventing it from interfering with the transmission of the communication information.

[0040] In order to achieve a stable power supply to the system and maintain its operating performance, in this embodiment, preferably, the control module is electrically connected to a voltage regulating module, the voltage regulating module is electrically connected to a power supply module, and the power supply module uses the mains grid voltage to achieve effective power supply to the system.

[0041] In order to regulate the power supply voltage of the system and prevent abnormal voltage from damaging electronic equipment, in this embodiment, preferably, the voltage regulation module includes a step-down circuit for regulating the voltage of the power supply module, a rectifier circuit for converting AC voltage to DC voltage, a voltage regulator circuit for stabilizing the voltage output, a filter circuit for filtering out AC voltage from the DC voltage, and a surge protection circuit for protecting subsequent electronic equipment.

[0042] To enable auxiliary operation of the antenna and improve the convenience and speed of operation, in this embodiment, preferably, the control module is electrically connected to an auxiliary module. The auxiliary module includes indicator lights for displaying the operating status and an audible and visual alarm for providing warnings in abnormal situations. The indicator lights include a power supply indicator light, a communication indicator light, and a fault indicator light.

[0043] In order to effectively store system data and information, in this embodiment, preferably, the control module further includes a memory for storing data and information. The memory includes a ROM memory for storing the system's running program body and a RAM memory for storing system data and information.

[0044] In order to improve the security of receiving and transmitting communication information by performing calculations on the received and transmitted information, in this embodiment, preferably, the processing module includes a receiving unit for acquiring data information, a conversion module for converting data information, a gain circuit for amplifying data information, and a filtering unit for filtering out channel effects from data information.

[0045] In order to encrypt and decode communication information, in this embodiment, preferably, the encryptor and the decoder use a hash algorithm: the calculation formula of the hash function is as follows: address = H[key];

[0046] The definition of a hash algorithm is as follows:

[0047] A hash function (output length l) consists of two algorithms (Gen, H) from two PPT slides;

[0048] Gen: A probabilistic algorithm that takes a security parameter 1n as input and outputs a key s, assuming that the security parameter 1n is implicit in s;

[0049] H: Take a key s and a 01 string x∈{0,1}* as input, and output Hs(x)∈{0,1}l(n), where n is a security parameter implicit in s;

[0050] If H is defined with input fixed as x∈{0,1}l'(n) and l'(n)>l(n), then such a hash function is called a fixed-length hash function, and the algorithm H is called a compression function.

[0051] Security of hash functions:

[0052] Anti-second preimage: Given a s and a random x, it is computationally difficult to find that x' ≠ x and satisfy Hs(x') = Hs(x) for an adversary on a PPT.

[0053] Antigen image: Given an s and a random y, it is computationally difficult to find a value of x that satisfies Hs(x) = y for an adversary on a PPT.

[0054] In order to achieve modulation and demodulation of communication information, in this embodiment, preferably, the demodulation module and the modulation module adopt single-sideband amplitude modulation and demodulation.

[0055] The baseband signal f is an angular frequency of ω. m A cosine signal with amplitude A and initial phase of 0, and a carrier g with angular frequency ω. c (much greater than w) m A cosine wave with an amplitude of 1 and an initial phase of 0 is transmitted by loading the baseband signal onto the carrier wave at the transmitting end, resulting in the modulated signal S.

[0056]

[0057] At the receiving end, multiplying the single-sideband signal by the carrier wave yields the demodulated signal:

[0058]

[0059] Then, the signal m is low-pass filtered, and the amplitude of the filtered signal is multiplied by 4, so that the baseband signal can be completely extracted at the receiving end.

[0060] In fact, the formula Asinw in m Let t be the Hilbert-Huang transform of the baseband signal f. Therefore, for any signal f, the modulated signal of the single-sideband can be obtained by the following formula:

[0061]

[0062] Among them, f H It is the Hilbert-Huang transform of the signal f.

[0063] In order to achieve power control and adjustment of communication information to facilitate the transmission of communication information, in this embodiment, preferably, the power control module adopts reverse power control. The reverse power control is further divided into open-loop power control and closed-loop power control. The closed-loop power control is further divided into outer-loop power control and inner-loop power control. The outer-loop power control controls the transmission signal power of the other party's transmitter based on the frame error rate after demodulation.

[0064] To achieve filtering of communication information, in this embodiment, preferably, the filter and the filtering unit employ a fifth-order FIR low-pass filter, calculated as follows:

[0065]

[0066] x (n) For the input signal, k (k) Here are the FIR filter coefficients, y(n) is the filtered signal, and N represents the number of taps in the FIR filter, with the filter order being N-1.

[0067] The working principle and usage process of this invention are as follows: During use, the power supply module supplies power to the voltage regulation module, enabling the power supply module to regulate the voltage and achieve stable power supply to the system. The control module controls the processing module to transmit the communication information to be transmitted. The processing module performs calculations on the communication information, and then the modulation module performs calculations on the communication information. The power control module adjusts the power of the transmitted communication information, then the first power amplifier amplifies the information, and then the encryption device encrypts the information to improve the security of the communication transmission. Finally, the power supply circuit and the array vibrator transmit the information.

[0068] When receiving communication information, the system receives the information through an array of oscillators and a power supply circuit. Then, it filters the information to remove noise, decrypts it through a decoder, amplifies it through a second power amplifier to maintain the security and stability of the transmission, demodulates it through a demodulation module, segments it through a frequency division module, and transmits it to the control module through a processing module to complete the reception of the communication information.

[0069] Furthermore, to enable auxiliary operation of the antenna and improve ease and speed of operation, the control module is electrically connected to an auxiliary module. This auxiliary module includes indicator lights for displaying the operating status and an audible and visual alarm for alerting in abnormal situations. The indicator lights include a power indicator, a communication indicator, and a fault indicator. To effectively store system data, the control module also includes a memory for storing this data. This memory includes a ROM memory for storing the system's running program and a RAM memory for storing the system's data.

[0070] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A directional beam omnidirectional scanning indoor base station antenna, comprising a control module, characterized in that: The control module is electrically connected to a processing module, the processing module is electrically connected to a modulation module, the modulation module is electrically connected to a power control module, the power control module is electrically connected to a first power amplifier, the first power amplifier is electrically connected to an encryption device, the encryption device is electrically connected to a feed circuit, and the feed circuit is electrically connected to an array vibrator. The processing module is used to process data information, the modulation module is used to modulate the baseband signal onto the carrier wave, the power control module is used to control the transmission power, the first power amplifier is used to amplify the signal, and the encryption device is used for communication... The information is encrypted; the processing module is also electrically connected to a frequency divider module, which is electrically connected to a demodulation module, which is electrically connected to a second power amplifier, which is electrically connected to a decoder, which is electrically connected to a filter, and the filter is electrically connected to the feed circuit; the filter is used to filter out noise, the decoder is used to decode, the second power amplifier is used to amplify the received communication signal, the demodulation module is used to demodulate the baseband signal from the modulated signal, and the frequency divider module is used to separate the communication information and send it to the processing module.

2. The directional beam omnidirectional scanning indoor base station antenna according to claim 1, characterized in that: The control module is electrically connected to a voltage regulating module, and the voltage regulating module is electrically connected to a power supply module, which uses the mains power grid voltage.

3. The directional beam omnidirectional scanning indoor base station antenna according to claim 2, characterized in that: The voltage regulation module includes a step-down circuit, a rectifier circuit, a filter circuit, a voltage regulator circuit, and a surge protection circuit that are connected in sequence.

4. The directional beam omnidirectional scanning indoor base station antenna according to claim 1, characterized in that: The control module is electrically connected to an auxiliary module, which includes indicator lights for displaying the operating status and an audible and visual alarm for providing warnings in abnormal situations. The indicator lights include a power supply indicator, a communication indicator, and a fault indicator.

5. A directional beam omnidirectional scanning indoor base station antenna according to claim 4, characterized in that: The control module also includes a memory for storing data information, which includes a ROM memory for storing the system's running program and a RAM memory for storing the system's data information.

6. A directional beam omnidirectional scanning indoor base station antenna according to claim 1, characterized in that: The processing module includes a receiving unit, a gain circuit, a filtering unit, and a conversion module that are electrically connected in sequence.

7. A directional beam omnidirectional scanning indoor base station antenna according to claim 1, characterized in that: The encryptor and the decoder both employ hash functions; the hash functions are used to convert inputs of arbitrary length into outputs of fixed length. The hash function is secure, including being resistant to second preimages, meaning that for a random input, it is difficult to find another different input that would make the hash values ​​of the two inputs the same. And antigenicity, that is, for a given hash value, it is difficult to find any input that makes its hash value equal to that given value.

8. A directional beam omnidirectional scanning indoor base station antenna according to claim 1, characterized in that: The demodulation module and the modulation module employ single-sideband amplitude modulation and demodulation; the baseband signal is a cosine signal with an angular frequency of wm, an amplitude of 1, and an initial phase of 0, and the carrier is a cosine wave with an angular frequency of wc, an amplitude of 1, and an initial phase of 0, where wc is much larger than wm; single-sideband modulation is achieved through Hilbert-Huang transform.

9. A directional beam omnidirectional scanning indoor base station antenna according to claim 1, characterized in that: The power control module uses reverse power control, which is further divided into open-loop power control and closed-loop power control. The closed-loop power control is further divided into outer-loop power control and inner-loop power control. The outer-loop power control controls the transmit signal power of the other transmitter based on the frame error rate after demodulation.

10. A directional beam omnidirectional scanning indoor base station antenna according to claim 6, characterized in that: The filter and the filtering unit are fifth-order FIR low-pass filters.

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