21 results about "Antenna diversity" patented technology

The invention belongs to the technical field of radio frequency identification, and particularly discloses a multi-antenna diversity reception high-frequency RFID signal processing system and method, and the system comprises a multi-antenna array, a multi-channel amplification notch module, a high-frequency-to-intermediate-frequency module, an MRC processing module, an AGC circuit, and a demodulation module which are sequentially connected according to the signal flow direction. Spatial diversity reception is realized through a multi-antenna array, low-noise amplification and self-interference suppression are synchronously completed by the multi-channel amplification trap wave module, amplitude weighting and phase compensation combination of multi-channel intermediate frequency signals are realized by the MRC processing module after frequency spectrum shifting of the high-frequency-to-intermediate frequency module, and the multi-channel high-frequency-to-intermediate-frequency signal is obtained. Power is stabilized through the AGC circuit, signal amplification and analog-to-digital conversion are completed through the demodulation module, and finally pure digital baseband signals are output. Through the technical means, the anti-interference capability and the receiving sensitivity of the high-frequency RFID receiver in a complex environment can be effectively improved, and the requirement for long-distance and high-reliability electronic tag reading is met.

The application discloses a kind of laser preparation vehicle antenna, is prepared by numerical control system control, applied to antenna technical field, including upper shell and bottom shell, the bottom shell is provided with screw below, the screw is connected to form a closed mounting space with the upper shell and the bottom shell, ceramic PCB is provided in the mounting space, ceramic body is installed above the ceramic PCB, a plurality of thimbles are installed in the side of the ceramic PCB, main antenna, diversity antenna, MOM4-antenna, WIFI-1 antenna, WIFI-2 antenna, GPS and BT antenna are sequentially connected with thimble on the ceramic PCB, the application has the characteristics that the drawing of multi-surface composite structure upper antenna circuit is realized.

Embodiments disclosed herein include headphone devices with spatially diverse antennas employing multiple operational modes and antenna switching policies. The headphone device may identify a current mode of operation and wirelessly communicate with at least one external device based at least in part on the current mode of operation. Further, operating in a first mode of operation, the headphone device may cause switching circuitry to selectively couple a first antenna to the common port in accordance with a first antenna switching policy. While operating in the second mode of operation, the headphone device may cause circuitry to selectively couple a second antenna to the common port in accordance with a second antenna switching policy that is different from the first antenna switching policy.

An antenna array has two columns of dipoles that are configured to radiate distinct signals. The top and bottom row of dipoles have a coupler that splits the power of each column such that each of the two dipoles at top and bottom radiate in both signals at a given power split ratio. The coupler provides for phase compensation so that the two radiated signals are phase aligned across the top and bottom row. Having the power shared at the top and bottom rows shifts the phase center away from the edge of the ground plane of the antenna’s reflector. The coupler is configured so that its coupling efficiency is greatest at the lowest frequency and least at its highest frequency. This improves the performance of the antenna array in the low frequencies while preserving antenna diversity between the two radiated signals.

A wireless audio system is provided that includes a transmitter using multiple antenna diversity techniques for different signal types, thereby optimizing multipath performance and improving the spectral efficiency of the system.

Embodiments disclosed herein include headphone devices with spatially diverse antennas employing multiple operational modes and antenna switching policies. The headphone device may identify a current mode of operation and wirelessly communicate with at least one external device based at least in part on the current mode of operation. Further, operating in a first mode of operation, the headphone device may cause switching circuitry to selectively couple a first antenna to the common port in accordance with a first antenna switching policy. While operating in the second mode of operation, the headphone device may cause circuitry to selectively couple a second antenna to the common port in accordance with a second antenna switching policy that is different from the first antenna switching policy.

The present invention discloses a fast capture method and system for a multi-antenna diversity receiver. The method includes obtaining auxiliary capture information; the auxiliary capture information includes the code phase, carrier Doppler, and telegram information of satellites that have completed frame synchronization and passed telegram verification in all tracking channels of the multi-antenna diversity receiver; searching the auxiliary capture information for the code phase, carrier Doppler, and telegram information of the target satellite to be captured; if the code phase, carrier Doppler, and telegram information of the target satellite to be captured exist, the code phase, carrier Doppler, and telegram information from the same frequency and point are directly used for the auxiliary capture of the target satellite; or the code phase, carrier Doppler, and telegram information from sources that are not at the same frequency and point are calculated and then used for the auxiliary capture of the target satellite. The solution provided by the present invention can speed up the capture time and improve the capture sensitivity.

The present disclosure relates to a method and an apparatus for indicating antenna mapping information in a wireless communication system. The method performed by a distributed unit (O-DU) of a base station in a wireless communication system, according to one embodiment of the present disclosure, comprises the steps of: receiving, from at least one radio unit (O-RU), a management message including capability information related to uplink antenna mapping of the at least one O-RU; generating, on the basis of the capability information, a control message including uplink antenna mapping information about the at least one O-RU; and transmitting the generated control message to the at least one O-RU, wherein the control message can include a section type format for scheduling information and a section extension format including at least one from among antenna group indication information, antenna diversity indication information, and antenna diversity number indication information related to antenna mapping.

The invention discloses a guide tracking method and system applied to a multi-antenna diversity receiver. The radio frequency front-end circuit is used for processing satellite signals through a power divider, a frequency divider and a filter and then sending the satellite signals to the radio frequency chip circuit; a short message signal sent by the radio frequency chip circuit is sent out after being processed by the temperature compensation attenuator and the low noise amplifier; the radio frequency chip circuit is used for performing down-conversion processing on satellite signals and performing up-conversion processing on short message signals; the baseband chip circuit is used for performing satellite signal acquisition, tracking, demodulation, dispreading, bit synchronization, frame synchronization, RDSS decoding, RNSS decoding and PVT resolving processing on the intermediate frequency signal transmitted by the radio frequency chip circuit, and outputting positioning communication information; and outputting a BPSK signal, the clock circuit is used for providing a clock; the power circuit is used for supplying power; the interface circuit is used for connecting external equipment. The scheme supports the Beidou to receive B1, B2, B3 frequency points and S frequency points and transmit L frequency points.

The present invention discloses a guidance and tracking method and system for a multi-antenna diversity receiver. The method includes opening a new tracking channel for the same satellite at all frequencies of all antennas of the multi-antenna diversity receiver to perform traction and tracking; after the loop of each tracking channel is updated, the guidance and tracking information is synchronously updated; the guidance and tracking information includes the code phase, carrier Doppler, and message information of satellites that have completed frame synchronization and passed message verification in all tracking channels; after a timing trigger triggers the guidance and tracking operation, the guidance and tracking information is used to calculate the current code phase, carrier Doppler, and message information of the same satellite at the remaining antennas or frequencies of the multi-antenna diversity receiver; and the calculated code phase, carrier Doppler, and message information are used to guide the tracking engine. The solution provided by the present invention can further improve tracking sensitivity and increase the success rate of tracking.

The utility model discloses a miniaturized antenna with a reference ground isolation branch knot structure and electronic equipment, and the miniaturized antenna with the reference ground isolation branch knot structure comprises a main set antenna, a diversity antenna, and an isolation branch knot structure which is used for optimizing the isolation degree of the main set antenna and the diversity antenna and is provided with a reference ground, the main set antenna is located at one end of the antenna structure and is connected with the grounding aluminum foil through the first grounding copper foil. The diversity antenna is located at the other end of the antenna structure and is connected with the grounding aluminum foil through the second grounding copper foil; and the isolation branch structure with the reference ground is arranged between the main set antenna and the diversity antenna of the antenna, is connected with the grounding aluminum foil through the third grounding copper foil, and is connected with the main set antenna or the diversity antenna. According to the invention, coupling between antennas can be reduced.

A method, an apparatus, and a computer program product are provided for configuring beam pairing between a base station and a user equipment (UE). In a method context, a method comprises: (i) receiving a base station beam of a plurality of base station beams from a base station at a first (RE) and a second RE of the UE; (ii) in response to determining that the first received power of the first RE satisfies the minimum received power threshold, determining that the first RE is available; (iii) in response to a second received power of the second RE being within the threshold range of the first received power, determining that the second RE is available; (iv) generating a channel state information (CSI) indication indicating availability of the first RE and the second RE; and (v) providing the CSI indication to the base station to cause the base station to (i) configure beam switching for transmission to the UE using the at least one base station beam, reception from the UE, or transmission to and reception from the UE, or (ii) perform a Physical Downlink Shared Channel (PDSCH) scheduling action for UE association to the at least one base station beam.

The invention discloses a laser prepared vehicle-mounted antenna, which is controlled and prepared by a numerical control system, is applied to the technical field of antennas, and comprises an upper shell and a bottom shell, a screw is arranged below the bottom shell, the upper shell and the bottom shell are connected by the screw to form a closed mounting space, a ceramic PCB is arranged in the mounting space, and the ceramic PCB is arranged in the mounting space. A ceramic body is installed above the ceramic PCB, a plurality of thimbles are installed on the side of the ceramic PCB, the ceramic PCB is in signal connection with a main antenna, a diversity antenna, an MOM4-antenna, a WIFI-1 antenna, a WIFI-2 antenna, a GPS and a BT antenna in sequence through the thimbles, and the antenna circuit drawing device has the advantage of achieving drawing of an antenna circuit on a multi-face composite structure.

A twelve element dual band multiple-input multiple-output (MIMO) antenna for a smartphone that includes a substrate, twelve single-element dual-band antennas and twelve T-shaped feed structures. The substrate has a top side, a bottom side, and four distinct side walls. The substrate accommodates twelve single-element dual-band antennas distributed along four side walls. Each single-element dual-band antenna includes a meandered slot line having two arms. Each arm is configured to radiate at specific resonant frequency. Twelve T-shaped feed structures are aligned in parallel with the twelve single-element dual band antennas and are located on the inner surfaces of the side walls, facilitating connectivity through feed ports located on the bottom side of the substrate. The twelve-element dual-band MIMO antenna array effectively radiates in a dual band at 2.4 GHz and 3.5 GHz in response to electrical signals input at the feed ports, achieving antenna diversity with good isolation.

The invention relates to a transmit antenna diversity wireless audio system. A wireless audio system is provided that includes a transmitter that uses multiple antenna diversity techniques for different signal types. The multipath performance can be optimized, and the spectral efficiency of the system can be improved.

The embodiment of the invention relates to the technical field of communication, and discloses an antenna array and a communication device, the antenna array comprises a substrate, a circuit board, a main set antenna, a diversity antenna, a first antenna unit, a second antenna unit and a feed structure, the main set antenna is electrically connected with the circuit board, the main set antenna is used for signal emission, and the diversity antenna is used for receiving signals. The diversity antenna and the main antenna are symmetrically arranged and are used for receiving signals, the first antenna unit is electrically connected with the circuit board, the first antenna unit is used for receiving and transmitting signals in a first frequency band range, the second antenna unit is used for receiving and transmitting signals in a second frequency band range, and the first antenna unit is electrically connected with the circuit board. And the main set antenna and the diversity antenna cover a third frequency band range together. Through the above mode, according to the embodiment of the invention, signals of each frequency band can be directly transmitted through a dedicated channel, a complex frequency band switching control circuit is not needed, and the problems of signal loss and switching delay caused by a radio frequency switch in a traditional scheme are fundamentally avoided.

The present invention belongs to the field of wireless communication technology, and specifically relates to a backscatter communication transmission method based on multi-antenna cyclic modulation. The present invention includes a tag information modulation and a reader / writer receiving method. The tag controls the load impedance switching of multiple tag antennas by creating multiple cyclic shift copies, artificially creating multipath for the reader / writer's signal reception at the transmitting end, thereby compensating for fading channel losses and improving the probability of correct signal demodulation; on the other hand, the tag avoids the inter-symbol interference problem caused by the multipath effect by introducing a protection interval for each cyclic shift copy, so that the reader / writer can use signal equalization technology to complete the correct detection and judgment of the signal during the receiving and demodulation process. Compared with the traditional backscatter communication transmission scheme, the scheme proposed by the present invention can not only effectively counteract the influence of the multipath effect on signal demodulation, but also improve the transmission quality of the backscatter communication channel by utilizing the multi-antenna diversity at the tag.

A method of operating a sensor in wireless communication with a thermostat of a heating, ventilation, and air conditioning (HVAC) system including: activating a first sensor antenna and a second sensor antenna to detect a first wireless signal transmitted from the thermostat of the HVAC system; detecting the first wireless signal using the first sensor antenna and the second sensor antenna; determining a first strength of the first wireless signal as detected by the first sensor antenna and a second strength of the first wireless signal as detected by the second sensor antenna; comparing the second signal strength to the first signal strength to determine which is greater; and detecting future wireless signals transmitted from the thermostat for a first selected period of time using the first sensor antenna if the first signal strength is greater or the second sensor antenna if the second signal strength is greater.

The present invention provides a control method of an electronic device is disclosed, wherein the electronic device includes a first antenna and a second antenna. The control method includes the steps of: setting one of the first antenna and the second antenna as a default antenna; receiving a plurality of packets within an interval; for each of the plurality of packets, comparing a signal strength corresponding to the first antenna and a signal strength of the second antenna to generate a first comparison result; updating a first value or a second value according to the first comparison result; comparing the first value and the second value to generate a second comparison result when running out the interval; and selecting one of the first antenna and the second antenna to be the default antenna according to the second comparison result.

The invention discloses a multi-antenna fusion reinforcement equipment system which comprises a high-strength reinforcement shell, a multi-band antenna array, a maximum ratio combination (MRC) fusion processing module and a self-adaptive signal enhancement module. According to the system, a shell is made of a carbon fiber or aluminum magnesium alloy light high-strength material and is subjected to three-proofing treatment; the antenna units in the multi-band antenna array are distributed at different positions in the shell, so that all-directional signal receiving is realized; the MRC fusion processing module performs optimal weighted combination on the multiple antenna signals according to the channel state information; the self-adaptive signal enhancement module adopts a low-noise amplifier with the noise coefficient smaller than 1dB and is integrated with a self-adaptive gain control circuit, and the amplification factor is dynamically adjusted. According to the system, through the organic combination of the multi-antenna diversity and the reinforcement technology, the communication reliability in a severe environment is remarkably improved, the multi-antenna diversity gain is fully exerted, the multi-band broadband coverage is realized, and the wireless communication requirement in an extreme environment is met.

A technique for adding a new information rate to a legacy physical interface of a communications system includes using a rate switch packet including a distinct rate select start-of-frame delimiter that indicates a newly defined physical interface packet. The rate switch packet uses the same modulation scheme as a base rate packet (e.g., a packet using an information rate defined by a standard communications protocol) and the same preamble pattern as the base rate packet. The preamble length of the rate switch packet can be the same as or different from the preamble length of the base rate packet. An embodiment uses antenna diversity by selecting the antenna in the rate switch packet and using the selected antenna to receive an adjusted rate packet. Additional rate switch start-of-frame delimiters can be used to indicate more than one adjusted rate packet, e.g., to support multiple adjusted information rates.