34results about How to "Reduce path loss" patented technology

The invention discloses an antenna switching circuit, an electronic device of the antenna switching circuit and an antenna switching method of the antenna switching circuit. The antenna switching circuit is arranged in the electronic device which is provided with an internal antenna and a radio frequency module. The antenna switching circuit comprises an external antenna connector and at least one controller. The external antenna connector is provided with an independent grounding end for receiving independent grounding signals, and is electrically connected with an external antenna. The controller is provided with a first radio frequency end, a second radio frequency end and at least one control end. The first radio frequency end is electrically connected to the radio frequency module. The second radio frequency end is electrically connected to the internal antenna. The control end is used for detecting the independent grounding signals. When the independent grounding signals detected by the controller through the control end do not change, the controller enables the radio frequency module to be electrically connected with the internal antenna. When the independent grounding signals detected by the controller change, the controller can enable the radio frequency module to be electrically connected to the external antenna.

This invention relates to a device and method for reducing UMTS high frequency path loss in a double mode mobile phone compatible with GSM and UMTS. The structure of the device characterizes that a control part monitors and controls each function part of a mobile phone, and outputs the path set controls signals, the path part separates UMTS high frequency signals of DCS and GSM high frequency signals into their own paths for input / output based on the monitor and control of the control part, the duplexer and / receives UMTS signals, DCS emits / receives DCS signals, GSM emits / receives GSM signals.

The present invention provides a three-dimensional space deployment method and device for heterogeneous UAVs based on particle swarm algorithm. The multi-target particle swarm algorithm is used to randomly initialize particles in a target area, and each particle has four-dimensional parameters, including a group of heterogeneous UAVs. The three-dimensional spatial position of each drone and the usage of the drone; the multi-objective particle swarm algorithm is used to calculate the change speed of the three-dimensional position of the drone and update the three-dimensional position of the drone; based on the combination of discrete binary particle swarm algorithm, the calculation of each The amount of change in the usage of each drone of each particle and update the usage of each drone; and on this basis, the spread and mutation operations in the genetic algorithm are added to prevent the particle swarm optimization from falling into the local minimum prematurely. Optimal solution; through the combination of multi-objective particle swarm optimization, discrete binary particle swarm optimization, and genetic algorithm, the problem of deploying heterogeneous UAVs needs to be satisfied with network services.

The present invention provides a radio frequency circuit and electronic equipment. The radio frequency circuit includes: a radio frequency transceiver with a first transmitting port, a first radio frequency module connected to a first antenna array, a second radio frequency module connected to a second antenna array, and a first radio frequency module connected to a second antenna array. A switch, the first input end of the first switch is connected to the first transmitting port, and the two output ends of the first switch are respectively connected to two radio frequency modules; when the first switch is in the first state, the first transmitting port and the second A radio frequency module is connected; when the first switch is in the second state, the first transmitting port is connected to the second radio frequency module. The invention can make the transmitting port select different paths, reduce the problem of large path loss caused by radio frequency wiring, and improve the antenna switching performance.

Provided in the embodiments of the present invention are a communication signal transceiving component, a terminal and a signal transceiving method, relating to the field of network transmission. The transceiving component comprises: a common antenna, a first communication chip, a second communication chip, a coupler, and a switch module. The first communication chip and the second communication chip are connected to the coupler by means of the switch module. The coupler comprises a first branch and a second branch and is connected to the common antenna to transceive communication signals from the first communication chip and / or the second communication chip. The present invention solves the technical problem in the related art that a time-division mechanism, which needs to be utilized when a BT signal and a WLAN signal need to be transmitted simultaneously because the BT and the WLAN use in common the same antenna, may severely affect the data throughput rate of the WLAN, achieving the effect that two kinds of signals may be transmitted simultaneously to enhance the data throughput rate.