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2149 results about "Antenna radiation" patented technology

Millimeter-wave quasi-optical integrated dielectric lens antenna and array thereof

InactiveCN101662076BWith quasi-optical Gaussian beam radiation characteristicsGuaranteed normal transmissionAntenna arraysDielectric substrateIntegrated antenna
The invention relates to the technical field of radar, in particular to a millimeter-wave quasi-optical integrated dielectric lens antenna and an array thereof. The array consists of a microstrip integrated antenna, a dielectric lens, an objective lens, an array base, a reflecting mirror, a protective cover and a beam transfer switch; one end face of the dielectric lens is a hemisphere or an ellipsoid, while the other end face is a cylindrical section; the microstrip integrated antenna is generated by an dielectric substrate, the front surface of the dielectric substrate is closely adhered tothe cylindrical section of the dielectric lens and serves as a feed source, and the back surface is grounded; the hemispherical or ellipsoidal end face of the dielectric lens is an antenna radiating surface; the length of the cylindrical part of the dielectric lens can be changed; the antenna array is arranged into a linear array or an area array; the array base and the reflecting mirror have conical quasi-optical reflecting mirror surfaces; the focus of the objective lens of the linear array or the area array aligns with the central line of the dielectric lens; the protective cover is arranged outside; and the antenna array is controlled by the beam transfer switch. The antenna structure has strong shock resistance and dust prevention, and is suitable for millimeter-wave radars for planes, automobiles and ships, and receiving / emitting sensing of communication equipment.
Owner:阮树成

Multi-frequency antenna system applicable to mobile terminal with metal frame structure

ActiveCN103346397AMetal Trim Frame Requirements RetainedMeet the needs of metal texture mobile terminal productsSimultaneous aerial operationsAntenna supports/mountingsResonanceCoupling
The invention discloses a multi-frequency antenna system applicable to a mobile terminal with a metal frame structure. The multi-frequency antenna system comprises a metal frame, a PCB and an antenna part. The metal frame is designed to be part of an antenna radiation body, two gaps are formed in the bottom portion of the metal frame, a feeding wiring part and the metal frame together form a T-shaped monopole antenna or an IFA antenna so that the metal frame itself can be used for producing low frequency and high frequency resonance, and other coupling parts can be additionally arranged to be used for adjusting the low frequency and high frequency resonance according to the needs of working frequency bands. The multi-frequency antenna system has the advantages that due to the fact that the gaps of the metal frame are formed in the bottom portion, a user can be prevented from touching the gaps during the actual use process, and the phenomenon that the performance of the antenna is poor when the antenna is held by a hand is avoided; the working frequency bands of the multi-frequency antenna system are 704Mhz-960Mhz and 1710Mhz-2700Mhz, and multi-frequency broadband is realized; compared with a traditional general antenna, the multi-frequency antenna system is multiple in frequency band and broad in frequency width; the antenna structure of the multi-frequency antenna system is small in occupied space, and mutual influence cannot be generated between the antenna structure and surrounding environments.
Owner:SHANGHAI AMPHENOL AIRWAVE COMM ELECTRONICS CO LTD

Double-frequency coupled antenna with metal frame

A double-frequency coupled antenna with a metal frame comprises the metal frame, a printed circuit board (PCB) arranged in the metal frame, and an antenna unit, wherein the metal frame comprises a closed loop metal frame formed by a first frame, a second frame, a third frame and a fourth frame, the PCB comprises a circuit area and a clearance area, the antenna unit comprises a feed line and a coupling line, the feed line is connected with a feed source, the coupling line is electrically connected with the fourth metal frame, and two ends of the fourth frame are connected with a ground of the PCB to form a closed-loop radiation loop. According to the double-frequency coupled antenna with the metal frame, the metal frame is designed as a part of an antenna irradiator, and projection areas of the PCB of the antenna are reduced; the metal frame does not need slotting, by means of a coupled feeding manner, current of the antenna in the whole radiation loop can be more evenly distributed, and the problem that finger touch affects properties of the antenna of mobile terminals is solved; by means of a slotting manner, the requirement of the antenna for PCB clearance environments is reduced, and thus, the antenna is applicable to more complicated mobile phone environments.
Owner:HUIZHOU SPEED WIRELESS TECH CO LTD

Mobile phone terminal antenna

The invention provides a mobile phone terminal antenna. The antenna comprises a metal casing, as well as a main antenna and an auxiliary antenna which are connected with the metal casing through insulating medium, wherein the main antenna is used for receiving and emitting wireless signals; the auxiliary antenna, as a diversity antenna, is used for emitting and receiving signals of GPS / WIFI frequency band; the main antenna is arranged at the lower end of the metal casing and comprises a main antenna radiation body, a first feeding part, an inductor and a second circuit part, the first feeding part and the inductor are positioned at an upper end surface of the connecting part of the main antenna radiation body and the metal casing, and the second circuit part is positioned at a lower end surface of the connecting part of the main antenna radiation body and the metal casing; a switch is arranged in the second circuit part and controls the second circuit part to be grounded or not so as to realize different working frequencies. According to the antenna, the metal casing and the antenna part are integrally formed through injection moulding and other processes. Besides, the switch and the inductor are also arranged, the working states of two frequency bands are realized to meet multi-band communication; the antenna design can be conveniently adjusted.
Owner:SHANGHAI AMPHENOL AIRWAVE COMM ELECTRONICS CO LTD

Full-face vehicular detection method for railway tunnel lining and device

A full-face vehicular detection method for a railway tunnel lining and a device aim to avoid collision of ground penetrating radar antennas with an overhead line system and a support of the overhead line system, the detection speed is a normal running speed of a train, the antennas in full-face detection are not interfered with each other, automatic positioning is realized during detection, only ground penetrating radar signals in a tunnel need to be acquired, and a penetrating radar signal processing and analyzing method in tunnel detection is modified. The vehicular device comprises a six-channel high-speed scanning penetrating radar, a positioning portion, a laser ranging portion and data acquisition and processing software. The pulse repetition frequency of the ground penetrating radar is 3MHz, the pulse repetition frequency of each channel is 500kHz, and the scanning rate is 976scan/s. The ground penetrating radar is provided with TEM (transverse electric and magnetic field) short-horn air coupled antennas, each group of antennas realizes a double-transmission and single-receiving function, and the center frequency of the antennas is 300MHz. The ground penetrating radar antennas are mounted outside passenger train connectors, radiation surfaces of the antennas respectively face to an arch crown, arch springing and side walls, and the full-face vehicular detection method and the device are used for automatically detecting to exam the railway tunnel lining.
Owner:SOUTHWEST JIAOTONG UNIV

4G antenna with metal frame

A 4G antenna with a metal frame comprises the metal frame, a PCB and an antenna part. The PCB comprises a clearance area and a metal area, the antenna part is located in the clearance area, and comprises a feed supply, a grounding point and a line part, the grounding point and the feed supply are arranged on the PCB, the grounding point is connected with the metal area, a feed line is led out of the feed supply, and the feed supply horizontally extends from the end, close to the metal frame, of the feed line to form a high-frequency line and a low-frequency line which are opposite in direction. First low-frequency resonance is generated by a first low-frequency branch, a second low-frequency branch and a second frame body. First high-frequency resonance is generated by the first low-frequency branch, the second low-frequency branch and a first frame body radiation loop. A first high-frequency branch and the second frame body are coupled to generate second high-frequency resonance. A parasitic branch is used for generating third high-frequency resonance. The method that the front part of the low-frequency line is bent in the reverse height direction is utilized, and the low-frequency bandwidth of the antenna is expanded. Each high-frequency resonance is generated by the radiation of the metal frame, and the problem that the metal frame shields high-frequency antenna radiation is solved.
Owner:HUIZHOU SPEED WIRELESS TECH CO LTD

Antenna device and electronic device

ActiveCN107039766AGuaranteed Closed Radiation PathsHigh Isolation FeaturesSimultaneous aerial operationsAntenna supports/mountingsCarrier signalHigh isolation
The present invention discloses an antenna device and an electronic device. The antenna device comprises a metal housing with a slit structure, wherein the metal housing is divided into an antenna arm portion and a main area portion; the antenna arm portion comprises a first fracture and a second fracture, and the antenna arm portion is at least divided by the first fracture and the second fracture into: a first antenna arm located between the first fracture and the second fracture, the first antenna arm being separating from the main area portion, a second antenna arm located at the first side of the first antenna arm, the first end and the second end of the second antenna arm being connected with the main area portion, a first matching circuit, one end of the first matching circuit being connected with the first antenna arm through a first metal connection piece, the other end of the first matching circuit being earthed at least through a first feed source; and a second matching circuit, one end of the second matching circuit being connected with the second antenna arm through a second metal connection piece, and the other end thereof being earthed through a second feed source. The antenna device and the electronic device is low in contour and high isolation, satisfy carrier aggregation, and facilitate improving antenna radiation efficiency and partial space multi-antenna design.
Owner:VIVO MOBILE COMM CO LTD
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