181 results about "Antenna factor" patented technology

The invention discloses an adjustable multi-band antenna system which is applicable to a mobile terminal with a metal frame structure. The antenna system comprises a metal frame, a PCB (printed circuit board) and an antenna portion. The metal frame is designed to be one portion of an antenna radiator, a loop is formed by the metal frame and the antenna radiator together, a single-stage branch portion is used for debugging low-frequency and high-frequency resonances, and a low-frequency coupling portion and a high-frequency coupling portion can be added according to requirements of working bands. The adjustable multi-band antenna system has the advantages that gaps of the metal frame are formed at the bottom, users are avoided from touching the gaps as much as possible in actual use, and poor antenna performance is avoided during actual handholding; the working bands of the adjustable multi-band antenna system are 704MHz-960MHz and 1710MHz-2700MHz, and a multi-frequency broadband is realized; compared with traditional common antennas, the adjustable multi-band antenna system has the advantages of multiple bands and wide bandwidth.

The invention provides a first antenna radiator, a second antenna radiator, a first power feed source, a second power feed source, a first metal piece and a filter. The first feed source and the firstantenna radiator form a first antenna with a working frequency band being a first frequency band; the second power feed and the second antenna radiator form a second antenna with a working frequencyband being a second frequency band; the first feed source, the first antenna radiator, the first metal piece and the filter form a third antenna with a working frequency band being a third frequency band; the second power feed source, the second antenna radiator, the first metal piece and the filter form a fourth antenna with a working frequency band being a fourth frequency band; the first frequency band is the same as the second frequency band, and the third frequency band is the same as the fourth frequency band; and the filter is used for filtering signals in the first frequency band and/or the second frequency band. The antenna device and the terminal device provided by the invention meet the isolation requirement and the bandwidth requirement of a multi-antenna system.

The invention provides an antenna system which comprises a system ground unit, a metal back casing, a frame serving as an antenna radiator, a grounding line, a feeder line and a tuning switch. The antenna radiator comprises a main radiator and a sub-radiator. The main radiator comprises a first main radiator which forms a first main slit with the metal back casing, a second main radiator which extends from the first main radiator and forms a second main slit with the metal back casing, and a first fracture which divides the first main radiator into two parts. The sub-radiator comprises a first sub-radiator which forms a first sub-slit with the metal back casing, a second sub-radiator which extends from the first sub-radiator and forms a second sub-slit with the metal back casing, and a second fracture which divides the first sub-radiator into two parts. Compared with the related art, the antenna system provided by the invention has the advantages of wide frequency band, high efficiency and good overall appearance.

The invention discloses an antenna structure of an electronic product with a rotational structure. The antenna structure comprises a mainboard and a rotational structure, wherein the mainboard is arranged in an electronic product shell; the rotational structure is coupled with the electronic product shell through a revolving shaft, and comprises a metal part which can be taken as an antenna radiator; the antenna radiator is connected with a radiofrequency connector arranged on the mainboard through a revolving shaft. The metal part in the rotational structure is taken as the antenna radiator, and the antenna radiator and the radiofrequency connector arranged on the mainboard of the electronic product are connected with a feed signal, thereby forming an antenna and producing resonance. The antenna radiator is arranged by fully utilizing an existing metal structure in the rotational structure of the electronic product without influencing the lightening and thinning development of the electronic product. Different types of antennae can be arranged under the condition that the rotational structure is a metallic or nonmetallic structure without being limited by the material of the rotational structure.

The invention provides an adjustable antenna for all-metal structural communication terminal equipment. A slit is formed in a rear metal shell, and an adjustable electric device is connected between two sides of the slit; due to the slit, when the antenna is applied to the all-metal structural communication terminal equipment, an electromagnetic wave signal can be effectively radiated or received. A bracket is arranged on the antenna; when a metal sheet covering or just not covering the slit is arranged on the bracket, the signal can be fed out through the slit in a metal sheet coupling feed manner so as to execute an antenna function; by arrangement of the adjustable electric device, the working frequency band of the antenna can be adjusted, so that the bandwidth of the antenna is effectively expanded. The antenna is simple in structure and is variable; the working frequency band is easy to adjust, so that the adjustable antenna is very suitable for the all-metal structural communication terminal equipment.

An insert type antenna module for a portable terminal and a method for manufacturing the same are disclosed, which make it possible to come up with an easier manufacture of an antenna module and to enhance the durability of an antenna module. The antenna radiation part is formed of a conductive metal sheet having a curve with at least one axis, and the antenna code to which the antenna radiation part is engaged is inject-formed, and a cover is inject-formed at one exposed outer surface of the antenna core in a state that the antenna core is inserted. The present invention is characterized in that in a manufacture of an antenna module for a mobile terminal, a cover is inject-formed at an outer surface of the exposed side of an antenna core in a state that an antenna core to which an antenna radiation part is engaged is inserted, which results in manufacturing a uniform thickness of an antenna module and decreasing a weight, volume and area, thus achieving a lighter and thinner terminal housing. Since a plurality of radiation parts can be integrated in one housing, a manufacture process can be more simplified as compared to a conventional antenna manufacture method (each antenna is manufactured and attached), thus obtaining an excellent quality and cost-effective product in a terminal housing manufacture process.

The invention provides an antenna module and a mobile terminal. The antenna module includes a first antenna and a second antenna, the first antenna forming a plurality of operating states, by switching the plurality of operating states, the first antenna supports an LTE low frequency 698-960MHz and LTE medium and high frequency 1710-2690MHz and supports multicarrier aggregation in the frequency band; and in each operating state, the first antenna also operates in the 5G band 3300-3800 MHz and 4800-5000MHz, and that second antenna operate in the 5G band of 3300-3800 MHz and 4800-5000MHz and TDD-LTE New Band 5150-5925 MHZ and together with the first antenna form 2*2 MIMO of the 5G band 3300-3800 MHz and 4800-5000MHz. The antenna module provided by the invention has better communication performance.

A multi-angle ultra wide band antenna for electronic devices is disclosed. The said antenna cover all mobile bands worldwide: 700/850/900/1700/1800/1900 and 2100 MHz and with sufficient bandwidth to include the 2400 and 2500 MHz mainly used in wireless networks, having a radiated element supported by a first substrate and expanding into a spatial geometry for transmission and reception of radio signal. An antenna base has a plurality of first solder pads on a second substrate for physical attachment to a printed circuit board and a second solder pad electrically connected to a terminal of said antenna to radio circuitry feed point, with compatible surface mount technology. The first and second substrates are joined by a bending line as a single substrate, where the said first substrate is allowed to be bent relative to the plane of the said second substrate.

The invention is applicable to the technical field of communication and provides a broadband dual-polarized radiation unit which is arranged on a metal reflection plate to form an antenna. The broadband dual-polarized radiation unit comprises at least four antenna vibrators, wherein each antenna vibrator comprises a base as well as a balance feed connector and two unit arms mounted on the base; the two unit arms are symmetrically arranged; one end of each unit arm is connected with the balance feed connector and the other end of each unit arm is closed and vertically extends to form a convex wall; and the unit arms of the four antenna vibrators are fixedly connected through isolation fixing pieces. The invention further correspondingly provides a dual-polarized antenna comprising a plurality of the radiation units.. Therefore, the size of a multi-frequency common antenna can be reduced; and meanwhile, each technological parameter of the antenna is improved.

The invention discloses an antenna module. The antenna module comprises a substrate, a gesture recognition chip, a communication chip, a first antenna radiator and a second antenna radiator, wherein the substrate comprises a first side and a second side which are oppositely arranged; the gesture recognition chip and the communication chip are arranged on the first side; the first antenna radiatorand the second antenna radiator are arranged on the second side; the gesture recognition chip is used for feeding the first antenna radiator, so that the first antenna radiator radiates millimeter wave gesture recognition signals; and the communication chip is used for feeding the second antenna radiator, so as to enable the second antenna radiator to radiate millimeter wave communication signals,wherein the frequency bands covered by the millimeter wave gesture recognition signals is not intersected with the frequency bands covered by the millimeter wave communication signals. The inventionfurther discloses electronic equipment. The millimeter wave gesture recognition function can replace physical keys of electronic equipment, so that start, shutdown, volume adjustment or other self-defined functions can be realized, the internal space of the electronic equipment is saved, the outer side frame of the electronic equipment is complete, and the science and technology feeling of the electronic equipment is enhanced.

In the field of circular-polarized planar wire antennas for very wide band telecommunications systems, and an antenna reflector for such an antenna, an antenna device comprises an antenna reflector and an antenna, and a method for implementing the antenna reflector. The antenna reflector comprises, on the one hand, a first reflection region exhibiting electromagnetic properties of an electrical conductor in a first sub-band of frequencies and, on the other hand, a second reflection region exhibiting electromagnetic properties akin to a magnetic conductor in a second sub-band of frequencies. Each reflection region is designed to face a region of the antenna able to emit electromagnetic radiation in the corresponding sub-band of frequencies in order to reflect the electric field of the backward radiation in phase with the electric field of the forward radiation.

The present invention provides an electronic device and a control method. The electronic device includes: a first screen and a second screen that are relatively foldable; a first NFC chip, a first matching circuit, and a first antenna radiator, where the first NFC chip is connected to a first end of the first antenna radiator by using the first matching circuit, a second end of the first antenna radiator is grounded, and the first antenna radiator is disposed on an edge of the first screen; a second NFC chip, a second matching circuit, and a second antenna radiator, where the second NFC chip is connected to a first end of the second antenna radiator by using the second matching circuit, a second end of the second antenna radiator is grounded, and the second antenna radiator is disposed atan edge of the second screen; a first switching switch, where the first switching switch is connected between the first matching circuit and the first antenna radiator; and a second switching switch,where the second switching switch is connected between the second matching circuit and the second antenna radiator. The present invention solves a problem that the electronic device has poor reading and writing performance in some usage scenes or certain locations in the existing NFC design solution.

The invention provides an antenna structure and a communication terminal. The antenna structure comprises an antenna radiator, a signal source, a first capacitor and a first tuning circuit; the firstend of the antenna radiator is grounded; the first end of the first capacitor and the first end of the first tuning circuit are both electrically connected with the connection point of the antenna radiator, the second end of the first capacitor is electrically connected with the signal source, and the second end of the first tuning circuit is grounded, wherein the antenna impedance of the first end of the first capacitor at a target frequency point is located in the first quadrant of the Smith chart, and the target frequency point is at least part of the frequency points in a frequency band covered by the antenna radiator. According to the scheme of the invention, on the one hand, the antenna structure can generate a new resonance mode, and the resonance mode excited by the antenna structure can be optimized; and on the other hand, the problem of impedance mismatch loss of the antenna can be improved, the impedance mismatch loss can be reduced, and the transmission efficiency of the antenna can be further improved.

A millimeter wave image processor, capable of performing imaging by matching and filtering while considering a spherical wave on an antenna face in a near field, is provided. The processor includes: a T-antenna which receives a radio wave emitted by a target; an A/D converter which A/D converts signals received by the T-antenna; a correlation processing unit which performs correlation processing to a combination of signals of a horizontal conversion output and a vertical conversion output among A/D converted data; and an imaging processor which correlates a reference function in which a received signal is generated theoretically on an assumption that the target is at a position of a focused distance and a received signal of a spherical wave received by the T-antenna for each pixel in the field of view to thereby create an image of the target.

An RFID system according to the present invention includes an RFID antenna system including: a first antenna that can communicate with an external reader/writer; an antenna selector for connecting with the first antenna; and a plurality of second antennas that can connect with the first antenna in order via the antenna selector, each of the second antennas can communicate with an IC tag that is attached to an article placed in a region defined by the second antenna.

The invention relates to an LTE coupling type mobile phone antenna with a metal frame. The LTE coupling type mobile phone antenna comprises a dielectric slab arranged in a mobile phone, an antenna radiator and the metal frame on the periphery of the dielectric slab. The metal frame can be a continuous and complete quadrilateral frame and can also be a quadrilateral frame with an open upper side corner. Gaps are formed between the periphery of the dielectric slab and the metal frame. The dielectric slab is divided into a clearance area and a laying area, the antenna radiator is arranged in the clearance area, one crossbeam, a left side beam and a right side beam of the metal frame are each provided with a grounded short dot, and the metal frame is connected with the laying area on the dielectric slab through the grounded short dots. A monopole antenna is adopted for the antenna radiator. According to the LTE coupling type mobile phone antenna, the metal frame is effectively utilized, multiple frequency bands can be covered with the antenna through body type changes of the antenna and other aided design, influences of the metal frame of a communication terminal on antenna performance are eliminated, excellent performance of the antenna is guaranteed, and meanwhile integrity of the metal frame is maintained as much as possible.

The invention discloses a method for setting the amplitude initial value of a signal source in an electromagnetic radiation sensitivity automatic test, which refers to an antenna factor calculation correlation and the related quantities of a first test frequency point to attain the antenna factor of the radiation antenna at the frequency point; refers to an amplitude initial value reference value of the signal source, the antenna factor of the radiation antenna at the first test frequency point, and the electromagnetic radiation field intensity corresponding to a second test frequency point regulated by test standards, the present gain of a power amplifier, the loss caused by the test cables and test loop of the second test frequency point, to calculate the amplitude initial value reference value of the signal source. Referring to the amplitude value, amplitude can be adjusted finely as the present signal source amplitude initial value. According to same amplitude adjustment schemes, the initial value setting method can effectively improve test efficiency.

The invention discloses a watch antenna and a watch equipped with the same, and mainly solves the problems of large occupied space, inconvenience in implementation and the like of the existing watch antenna. According to the watch antenna provided by the invention, a watch ring opening is used as an antenna bracket; an antenna radiator is combined with the ring opening to be used as the radiating surface of the antenna; therefore, the internal occupied space of the watch by the antenna is greatly reduced; in addition, the antenna is arranged above a surface with characters and the watch case; when the surface with characters and the watch case are made from metal materials, the influence on the antenna is relatively low; and therefore, the watch equipped with the watch antenna can adopt the metal watch case and the metal surface with characters, and the attractive appearance of the watch is highly promoted.

The present invention provides an antenna system and method for controlling an antenna pattern in a communication device. The antenna system comprises one or more rotatable antennas and one or more antenna reflectors. The one or more antenna reflectors are electrically isolated reflecting surfaces that are operationally coupled to the one or more rotatable antennas. The method comprises aligning the one or more rotatable antennas in one or more positions with respect to the one or more antenna reflectors so as to provide a repeatable antenna pattern.

The invention discloses a method for presetting the gravity of a reflector of a large antenna; according to law the Hooke and the superposition principle of vectors and on the basis of the structural mechanics analysis for the antenna, the method establishes the functional relation about the gravity deformation on antenna reflector nodes and the elevation so as to calculate the MSE (mean square error) of the reflector deformation of an arbitrary elevation relative to the optimally-matched paraboloid; aiming at the requirement for the antenna condition by users, the optimized mathematical model is established and an adjustment angle optimizing the antenna performance is solved; the gravity deformation figured out at the optimal adjustment angle is used as a preset valve for adjusting the elevation of the antenna; the axial height of an adjustment point on the antenna reflector is observed by an optical the theodolite so as to determine the posture of each panel on the whole reflector with the adjustment point configured to the position of the preset value. The invention has the advantages of evidently increasing the antenna reflector precision and the whole working performance, and can be used for the installation and adjustment for large antenna reflector.

The invention provides an antenna tower and a using method thereof. A high-frequency antenna (740) and/or a low-frequency antenna (750) for electromagnetic compatibility testing are arranged on the antenna tower. The antenna tower comprises a tower base (100) and a screw rod (200) vertically arranged on the tower base (100), and is characterized in that the antenna tower further comprises a high-frequency antenna steering device (500), a low-frequency antenna steering device (900) and a sliding block (400) sleeving in a sliding mode the screw rod (200); the tower base (100) is internally provided with an actuator for driving the sliding block (400) to vertically rise and fall along the screw rod (200); and the actuator is connected with a pneumatic motor. According to the antenna tower, interference of burr signals generated during the test of the motor on test signals sent and received by the antenna can be avoided, and the result of the electromagnetic compatibility testing of the product is accurate.

Slot antennas built into metallic body panels utilize the vehicle body itself as an antenna radiator. Building the slot antennas directly into the metallic body panels converts the vehicle body from functioning as an RF shield into an RF antenna, which significantly improves mobile communication reception for a wide range of RF communication devices. Different types of slot antennas may be included for different communication channels utilized by different types of devices. Multi-band slot antennas are configured to receive multiple bands within a larger frequency channel. Dual-polarity antennas are configured to receive signals propagating in a dual-polarity mode. Multiple slot components may be configured as multi-band, dual-polarity antennas. Each slot antenna may be passive (without an RF pickup) or active with an RF pickup and coaxial cable connecting the antenna to an electronic device, such as receiver or amplifier located inside or otherwise interconnected with the vehicle.

The invention provides an AMC based low-profile high-isolation differential dual-polarized slot antenna applied to 5G communication. The antenna comprises the reflection floor and first and second dielectric plates arranged over the center of the reflection floor, a third dielectric plate is arranged under the reflection floor, the first dielectric plate is pasted with a dipole, the antenna further comprises an artificial magnetic conductor structure which is composed of the second dielectric plate, circular ring shaped copper sheets arranged regularly in the upper surface of the second dielectric plate, the third dielectric plate, a square copper sheet arranged on the third dielectric plate and an air cavity between the second and third dielectric plates, and the upper surface of the second dielectric plate includes the surface of the artificial magnetic conductor and is composed of the 64 circular ring shaped copper sheets arranged regularly. The antenna is characterized by broadband, the bandwidths of two ports of the antenna cover 3.28-5.31GHz (47.3%) and 3.29-5.32GHz (47.2%) respectively, and the antenna can be applied to 5G microwave communication. High-isolation and low cross polarization are realized, and a 1*4 high-gain antenna array is realized via a differential feed network.

The invention discloses a field calibration method for a radiated emission measurement antenna of an electromagnetic compatibility experiment. The field calibration method comprises the following steps that an antenna factor of a reference antenna is obtained through measurement; a first standard value of power of an electromagnetic wave signal is obtained through measurement; a first measurement value of the power of the electromagnetic wave signal is obtained through measurement; the difference value between the first standard value and the first measurement value is calculated to obtain insertion loss between the reference antenna and a transmission antenna; a second standard value of the power of the electromagnetic wave signal is obtained through measurement; a second measurement value of the power of the electromagnetic wave signal is obtained through measurement; the difference value between the second standard value and the second measurement value is calculated to obtain insertion loss between an antenna to be calibrated and the transmission antenna; the antenna factor of the antenna to be calibrated is obtained through calculation of the antenna factor of the reference antenna, the insertion loss between the reference antenna and the transmission antenna and the insertion loss between the antenna to be calibrated and the transmission antenna. The field calibration method is applied to calibration of the radiated emission measurement antenna in a 30MHz-1GHz frequency band.