86results about How to "Reduce the number of antennas" patented technology

The invention discloses a near field communication (NFC) dual-mode mobile terminal and a communication method thereof. The method comprises the following steps that: when a frequency modulation (FM) function of the mobile terminal is required to be used, the mobile terminal indicates a built-in antenna of the mobile terminal by a control network of the mobile terminal to receive a radio frequency signal from an FM transmitting station; and when an NFC function of the mobile terminal is required to be used, the mobile terminal indicates the built-in antenna by the control network to perform near field communication with a reader or a label in an electromagnetic induction way. In the NFC dual-mode mobile terminal and the communication method thereof, the number of antennae of the mobile terminal is reduced, system performance is enhanced, and user experiences are improved.

The invention brings forward a control circuit, control method, and control apparatus of a diversity reception communal antenna, and a terminal. The control circuit comprises a long term evolution (LTE) module and a wireless local area network (WLAN) module. The LTE module includes a plurality of LTE radio frequency path ports that are divided by frequency bands; the first LTE radio frequency path port is connected to a first switching port of a radio frequency switch; and the second LTE radio frequency path port is connected to a first port of a first frequency division device. The WLAN module includes a plurality of WLAN radio frequency path ports that are divided by frequency bands; the first WLAN radio frequency path port is connected to a second switching port of the radio frequency switch; and the second WLAN radio frequency path port is connected to a first port of a second frequency division device. A second port and a common port of the first frequency division device are respectively connected to a common port of the radio frequency switch and a second port of the second frequency division device; and a common port of the second frequency division device is connected to a first antenna. According to the invention, the production costs are reduced; and a problem that a WIFI MIMO antenna can not be designed on a terminal due to insufficient terminal space can be solved.

The invention relates to an indoor positioning tracking system and an indoor positioning tracking method based on a passive radiofrequency identification technology. The system consists of a central controller, a router, a wireless router, an all-in-one electronic tag reader-writer, an antenna and a passive tag. The method comprises the following operating steps of: (1) laying out an antenna array; (2) managing entrance and exit of personnel; (3) performing a positioning tracking algorithm; and (4) displaying positioning tracking. Due to the adoption of the system and the method, positioning tracking of dynamic targets such as human beings, animals, objects and the like in rooms can be realized; and the system can work in a severe environment, so that a base is laid for a position-based service. The system has advantages of simple structure and low cost; and the method is easy and convenient to operate, and is superior in performance, and is suitable for large-scale indoor positioning and tracking occasions.

The invention relates to a multi-frequency-band array antenna compact in structure. The multi-frequency-band array antenna comprises a metal reflective board, a low-frequency radiation unit working in low frequency bands and a high-frequency radiation unit working in high frequency bands, and the low-frequency radiation unit and the high-frequency radiation unit are arranged on the metal reflective board. The low-frequency radiation unit and the high-frequency radiation unit are arranged on the metal reflective board in a nested mode, and the orthographic projection of the low-frequency radiation unit and the orthographic projection of the high-frequency radiation unit do not coincide. The low-frequency radiation unit is formed by connecting a horizontal vibrator and a vertical vibrator with a power divider feed network and is flexible in structure, and a distance and other parameters can be flexibly configured according to practical application requirements. Due to the adoption of the structure, circuit network losses are few, the radiation characteristic stability of the multi-frequency-band array antenna within an ultra wide band range can be maintained, 2G, 3G and 4G LTE systems in mobile communication are compatible, the number of antennas used in a base station can be reduced, station distribution cost can be lowered, and operation and maintenance cost can also be lowered.

The embodiment of the invention provides a radio frequency circuit and electronic equipment, and the radio frequency circuit comprises a first modem which is used for processing 4G radio frequency signals; a second modem which is used for processing the 5G radio frequency signal; at least two first antennas which are used for transmitting 4G network signals of the first SIM card; at least two second antennas which are used for transmitting 5G network signals of the second SIM card; and at least two third antennas which are used for transmitting the 4G network signal of the first SIM card and transmitting the 5G network signal of the second SIM card. When the radio frequency circuit transmits 4G network signals of the first SIM card and 5G network signals of the second SIM card, the 5G network and the 4G network can coexist under the condition of two SIM cards by sharing at least two antennas, the number of the antennas of the radio frequency circuit can be reduced, the occupation of the antennas on the internal space of the electronic equipment is reduced, and the internal space utilization rate of the electronic equipment can be improved.

The invention relates to a radio frequency circuit, an antenna control method, communication equipment and a computer readable storage medium. The radio frequency circuit comprises a transceiver module; a first antenna group, which comprises a plurality of first antennas and is used for receiving and transmitting 4G radio frequency signals and 5G radio frequency signals; a second antenna group, which comprises a plurality of second antennas and is used for receiving and transmitting 5G radio frequency signals; a switch control module, which is connected with the transceiver module, the first antenna group and the second antenna group, and is used for controlling one target antenna sequentially determined from the first antenna group or the second antenna group to send a detection referencesignal to a base station when the transceiver module sends the detection reference signal; and controlling the remaining antennas in the first antenna group to receive and transmit the 4G radio frequency signals and the 5G radio frequency signals when the target antenna is the first antenna. The first antennas are multiplexed to transmit and receive 4G and 5G radio frequency signals, the total number of the antennas is reduced while the throughput of the antennas is ensured, and the number of the antennas is reduced, so that the isolation degree of the antennas can be increased, and mutual interference of the antennas is reduced.

The embodiment of the invention discloses a radio frequency module, terminal equipment and a signal transmitting method. The radio frequency module comprises an antenna module, a switch module and a power amplifier, wherein the antenna module comprises a first antenna unit and a second antenna unit; wherein the first antenna unit is used for supporting a first frequency band working in a new air interface NR; the second antenna unit is used for supporting a first frequency band working in NR and a second frequency band working in LTE, and the first frequency band and the second frequency bandare frequency bands which do not work at the same time; a switch module is used for switching and conducting a power amplifier and paths between different antennas of the first antenna unit and the second antenna unit; the power amplifier is used for amplifying the radio frequency signal of the first frequency band to obtain a first amplified signal, and sending the first amplified signal throughthe antenna on the conducted path of the switch module. According to the radio frequency module, the terminal equipment and the signal transmitting method, the complexity of the radio frequency modulecan be reduced, and the cost is reduced.

The invention discloses a vehicle wireless charge emission module comprising a body portion with an inner mounting space, a wireless charge emission coil portion arranged in the mounting space and configured with a wireless charge receiving portion of a portable terminal machine so as to generate power energy in a magnetic induction mode, an NFC emission antenna portion arranged in the mounting space and formed by annularly winding many loops so as to carry out near distance communication with an NFC reception antenna portion of the portable terminal machine, and a conversion portion arranged on the body portion and used for activating the wireless charge emission coil portion and the NFC emission antenna portion; the NFC emission antenna portion is arranged right above the wireless charge emission coil portion; the technical scheme can reduce unnecessary antenna numbers of the portable terminal machine, is suitable for wireless charge and NFC communication, can actively receive vehicle information, and improves safety function and consumption usage conveniences.

The invention requests to protect an interference elimination and antenna optimization method in a multi-cell large-scale MIMO system, and provides an interference alignment method combining joint spatial division and multiplexing with antenna selection. A user side design a joint receiving filter matrix, compresses an interference space and overcomes the rapid increasing of the quantity of user terminal antennas along with the increasing of a user quantity; a base station side adopts an antenna selection algorithm with low complexity, and selects an appropriate channel vector, so that the quantity of main characteristic values of a channel covariance matrix and the quantity of the selected antennas meet a certain relationship, and thus the combination of interference alignment and joint spatial division and multiplexing is well achieved. Theoretical analysis and estimation results indicate that by using the interference alignment method combining joint spatial division and multiplexing with antenna selection provided by the invention, the system interference can be eliminated, and when the user quantity is large, the quantity of the antennas required by the base station side and the user side is reduced.

Disclosed are an antenna allocation method and device. The method comprises: obtaining location information of a terminal; according to the location information, determining a reference number of antennae within a transmitting end, the antennae being used for sending data to the terminal; determining whether a transmission performance difference value is less than a preset transmission performance threshold value; when the transmission performance difference value is not less than the preset transmission performance threshold value, increasing the reference number, and returning to execute the step of determining whether the transmission performance difference value is less than the preset transmission performance threshold value, until the transmission performance difference value is less than the preset transmission performance threshold value; when the transmission performance difference value is less than the preset transmission performance threshold value, determining the increased reference number to be a target number; in the transmitting end, allocating the target number of antennae to the terminal. The present antenna allocation method reduces channel estimation workload when precoding, and, by decreasing the number of antennae allocated to a terminal, also reduces operational complexity when precoding, thereby improving system performance.

The invention relates to a vehicle wireless key detection system and a vehicle. The system comprises a low-frequency emission antenna arranged on a vehicle to send a low-frequency wireless signal covering the whole vehicle and a vehicle key including a key-free system detection module, a key low-frequency receiving device, a key high-frequency emission device and a key controller, a vehicle high-frequency receiving module and a control module. The key-free system detection system module can detect whether the vehicle key is in a coverage range of the low-frequency emission antenna; the key controller is configured in a way that when the vehicle key is detected to be in the coverage range of the low-frequency emission antenna, the key low-frequency receiving device is started to receive thelow-frequency wireless signal, and the key high-frequency emission device is started to send a high-frequency wireless signal at least comprising an authorization signal, a function signal and a low-frequency wireless signal RSSI strength signal; the vehicle high-frequency receiving module and the control module are arranged on the vehicle; the vehicle high-frequency receiving module receives thehigh-frequency wireless signal; and the control module authorize the authorization signal and judges according to the low-frequency wireless signal RSSI strength signal.

The invention relates to a double-frequency dual-polarization narrow-wave beam array antenna comprising a metal reflecting plate, high-frequency radiating units, and low-frequency radiating units. The high-frequency radiating units arranged on the metal reflecting plate work at a high frequency band and the low-frequency radiating units arranged on the metal reflecting plate work at a low frequency band. Two columns of low-frequency arrays are distributed at the two sides of three columns of high-frequency arrays; the low-frequency radiating units corresponding to the two columns of low-frequency arrays are connected by two paths of power divider and all low-frequency arrays form a low-frequency system; the high-frequency radiating units corresponding to the three columns of high-frequency arrays are connected by three paths of power dividers and all high-frequency arrays form a high-frequency system. Because of a high-low-frequency non-common-ground way and a corresponding de-coupling device, independence of the high-frequency and low-frequency circuits and radiating performances is guaranteed. With the double-frequency dual-polarization narrow-wave beam array antenna, stability of the radiating characteristic in a broadband range is guaranteed; and compatibility with all 2G, 3G and 4G LTE systems in mobile communication is realized.

The invention discloses handheld unmanned aerial vehicle detection interference equipment comprising, in an equipment housing, a detection module which is connected with a control module and is used for carrying out unmanned aerial vehicle detection and direction finding on radio signals emitted by an unmanned aerial vehicle under the control of the control module; an interference module which isconnected with the control module and is used for sending an interference signal under the control of the control module and enabling the unmanned aerial vehicle to execute return or forced landing through the interference signal; an alarm and state display module which is connected with the control module and is used for carrying out the alarm and related information display during the detectionand direction finding of the unmanned plane under the control of the control module; a power supply module which is connected with the controller and is used for supplying power to the unmanned aerialvehicle detection interference equipment; and the control module which is used for controlling each module in the unmanned aerial vehicle detection and interference equipment to cooperatively detectand interfere with the unmanned aerial vehicle. According to the invention, integration and miniaturization of an anti-unmanned aerial vehicle equipment system are facilitated, a simple and reliable direction finding function is provided, and the accuracy of unmanned aerial vehicle countering is greatly enhanced.

The invention discloses a radio frequency circuit and electronic equipment, and the radio frequency circuit comprises a radio frequency transceiver, a first radio frequency module, a second radio frequency module, a third radio frequency module, a combiner module, a first switch assembly, and a first antenna. The radio frequency transceiver is electrically connected with the first end of the first radio frequency module, the first end of the second radio frequency module and the first end of the third radio frequency module. A first port of the combiner module can be electrically connected with a second end of the first radio frequency module or a second end of the second radio frequency module through the first switch assembly, a second port of the combiner module is electrically connected with a second end of the third radio frequency module, and a third port of the combiner module is electrically connected with the first antenna; and under the condition that the first antenna receives the first radio frequency signal and the second radio frequency signal, the combining module is used for transmitting the first radio frequency signal to the third radio frequency module and transmitting the second radio frequency signal to the first radio frequency module or the third radio frequency module. Therefore, the number of antennas of the radio frequency circuit can be reduced.

A reference signal transmission method, a device and a computer storage medium, pertaining to reference signal transmission technology in the field of wireless communications. The present reference signal transmission method comprises selection of a number M of antennae in an antenna array of a number X of antennae to serve as reference antennae for the transmission of a reference signal, and transmission by said number M of antennae of a reference signal, said number M being smaller than said number X, and said number M of antennae being distributed within said antenna array.

The invention relates to an antenna sharing circuit, a radio frequency circuit and a mobile terminal. The antenna sharing circuit comprises an antenna matching circuit, a first filter, a radio frequency switch and a second filter. The antenna matching circuit is used for receiving radio frequency signals located at a first radio frequency band and radio frequency signals located at a second radio frequency band, matching impedance bandwidth of the first radio frequency band and expanding impedance bandwidth of an antenna, wherein the radio frequency signals located at the first radio frequency band and the radio frequency signals located at the second radio frequency band are transmitted by the antenna. The input end of the first filter is connected with the output end of the antenna matching circuit and used for restraining radio frequency signals located out of the first radio frequency band and transmitted by the antenna. The input end of the radio frequency switch is connected with the output end of the antenna matching circuit, the output end of the radio frequency switch is connected with the input end of the second filter, and the second filter is used for restraining radio frequency signals located out of the second radio frequency band and transmitted by the antenna. The antenna sharing circuit, the radio frequency circuit and the mobile terminal reduce China mobile multimedia broadcasting (CMMB) function lead-in cost and technical risks of terminal device manufacturers and solve an important technical bottleneck problem for terminal device CMMB function lead-in.

The embodiment of the invention discloses a terminal device, including a metal frame and a circuit board. Two conductive components are parallelly arranged between a side frame of the metal frame andthe circuit board, one end of each conductive component is electrically connected with the side frame, and the other end is electrically connected with a grounding point of the circuit board, therebyforming a slot antenna capable of generating first communication frequency band and second communication frequency band resonance. The position of the side frame, which is close to the first conductive component, is provided with a signal feeding point, the position of the side frame, which is close to the second conductive component, is provided with a capacitor used for generating resonance of athird communication frequency band. Thus, the slot antenna integrated in the terminal device can work at multiple communication frequency bands, thereby reducing the number of antennas in the terminal device, and since the slot antenna can be integrated in a side edge of the terminal device, an endpoint does not need to be arranged on the metal frame, thus the layout space of the antenna can be effectively saved, and the requirements for miniaturization and beautiful appearance of the terminal device are met.

The invention relates to an RFID-based double-loop switching layer plate antenna device provided with a power supply module, radio frequency reader/writer, a dual-way match board and antenna array. The radio frequency reader/writer is connected with the power supply module, the RF signal output end of the RF reader/writer is connected with the input end of the dual matching board through the RF line, the output end of the two-way matching board is connected with the antenna array, characterized in that the antenna array consists of two sawtooth antennas overlapping and complementing each other, that is, the two sawtooth antennas are placed side by side and face each other, Compared with the prior art, the number of antennas is reduced, the cost is reduced, and the antenna is changed from aplurality of vertical antennas to a single layer board type antenna, which is simple in installation and strong in retrofitting; the working mode of switching two antennas is adopted, and the antennas are complementary before the two antennas so as to eliminate the blind area, thereby effectively reducing the leakage reading rate.

The invention discloses a method for combined optimizing base station antennas and user transmitted power by an uplink large scale MIMO, directed at an uplink large scale MIMO system which adopts (MinimumMean Square Error) MMSE receiver. The method comprises the following steps: after acquiring state information of statistic channel, the base station obtaining a user uplink rate that is processed by the MMSE receiver so as to obtain the user transmitted power expressed by the user uplink rate; on the basis of the user transmitted power, establishing an energy efficiency optimization object; obtaining the optimized base station user speed through finite iteration; in each iteration, the obtained optimized solution is a closed-form expression; finally, the base station, on the basis of the relationship between user rate and power, obtaining the optimized user uplink transmitted power so as to complete combined optimization of the base station antennas and user transmitted power. According to the invention, only state information of statistic channel are utilized in the execution of an algorithm, which avoids operations involving large dimensional instant channel matrix and reduces calculating complexity.