510 results about "Omnidirectional antenna" patented technology

The invention discloses a satellite terminal adaptive power adjusting system. The system comprises an attitude sensor module used for collecting three-dimensional attitude data of a terminal; the antenna pattern database is used for storing theoretical gain values of the panel omnidirectional antenna in different attitudes; the gain prediction engine is used for calculating theoretical gain according to the current attitude data and the directional diagram database; the signal quality detection module is used for collecting the intensity, the signal-to-noise ratio and the bit error rate of the received signal in real time; the power control algorithm module fuses the gain prediction value and the signal quality feedback and is used for generating a dynamic transmitting power instruction; the radio frequency power amplifier is used for executing the power adjusting instruction and outputting an adjusted transmitting signal; the invention further discloses a satellite terminal self-adaptive power adjusting method. According to the invention, the problem of balance between satellite terminal communication stability and power consumption efficiency in a complex environment is solved.

This application relates to the field of communication device technologies, and provides a wireless router and a control method thereof, to resolve a problem of how to improve application universality of the wireless router. The wireless router includes an omnidirectional antenna, a directional antenna, and a driving apparatus. The driving apparatus is connected to the directional antenna, the driving apparatus is configured to drive the directional antenna to rotate, so that a beam direction of the directional antenna coincides with a direction of a target beam in a beam lookup table, and the target beam is capable of covering a target device. The beam lookup table includes a set formed by beams when the directional antenna rotates to a plurality of different orientations under driving of the driving apparatus. The wireless router provided in this application is used for wireless coverage of a house building.

The broadband low-profile dual-polarization omnidirectional antenna comprises a horizontal polarization radiator, a metal coupling patch, a vertical polarization radiator and a metal floor which are sequentially arranged from top to bottom, the horizontal polarization radiator comprises a dielectric substrate, and a horizontal polarization radiation patch and a feed network which are printed on the upper surface and the lower surface of the dielectric substrate; the metal coupling patch comprises a metal disc and a metal circular ring nested on the circumference of the metal disc; the horizontal polarization radiation patch is connected with the metal disc through a first short-circuit line, and the metal ring and the horizontal polarization radiation patch are connected with the metal floor through four second short-circuit lines and four third short-circuit lines respectively. Through short-circuit connection between the horizontal polarization radiation patch and the metal disc and between the metal circular ring and the horizontal polarization radiation patch and the metal floor, coupling between the horizontal polarization radiation body and the vertical polarization radiation body is achieved, the electrical length of the antenna is further prolonged, the bandwidth of the antenna can be effectively widened, and the profile of the antenna can be effectively reduced.

A vertically-polarized omnidirectional antenna, including: a body including: a host printed circuit board (PCB) including: first and second slots, and a metal flooded ground plane, first and second antenna PCBs forming four dipole pairs, the first and second antenna PCBs mounted to the host PCB, respective first to third ground connection fillet tabs, the first and second tabs being on an opposite side of the host PCB from the third tab, the first to third tabs being on a same side of its antenna PCB, an amplitude taper on each antenna PCB at transitions between the host and antenna PCBs, including: a first transmission line splitting off into a second transmission line and a third transmission line, the second transmission line feeding two antennas to form one dipole pair, the third transmission line stepping down using a quarter-wave transformer, and a radio frequency (RF) connector to receive a power supply.

A portable multifunctional AI enabling electronic countermeasure system relates to the technical field of electronic countermeasure, and comprises a host housing, the bottom of the host housing is provided with a tripod, and the surface of the host housing is provided with a plurality of broadband antennas and a reference omnidirectional antenna; a plurality of transceiving front-end assemblies, a receiving front-end assembly and a signal processing unit are arranged in the host shell, the transceiving front-end assemblies are electrically connected with the broadband antennas in a one-to-one correspondence manner, and the reference omnidirectional antenna is electrically connected with the receiving front-end assembly; the plurality of transceiving front-end assemblies and the receiving front-end assembly are electrically connected with the signal processing unit; the signal processing unit is used for processing the radio frequency signals output by the plurality of transceiving front-end assemblies and the receiving front-end assembly by adopting an AI algorithm model to generate corresponding interference signals, and the interference signals are sent to the broadband antenna through the plurality of transceiving front-end assemblies; the method is used for solving the problems of weak interference capability and slow deployment speed in the prior art.

The invention provides a communication device, a communication method, a communication system, electronic equipment and a storage medium, which are applied to the technical field of communication and are used for solving the problem that the coverage range and the antenna gain of an existing intelligent antenna cannot meet the use requirements of different use environments. The communication device comprises a multiplexer and a plurality of antenna structures. The multiplexer comprises a common end and a plurality of selection ends. The common end of the multiplexer is coupled with one radio frequency channel, and the common end is used for being switched and conducted with different selection ends in the plurality of selection ends to form a plurality of paths. The multiple antenna structures comprise phased-array antennas, the multiple selection ends comprise first selection ends, and the phased-array antennas are coupled with the first selection ends. The plurality of antenna structures further comprise an omnidirectional antenna, the plurality of selection ends further comprise a second selection end, the omnidirectional antenna is coupled with the second selection end, and / or the plurality of antenna structures further comprise a directional antenna, the plurality of selection ends further comprise a third selection end, and the directional antenna is coupled with the third selection end.

Omni-directional, horizontally polarized antennas are provided. According to one aspect, an omni-directional, horizontally polarized antenna includes a first reflector and a second reflector separated from the first reflector. Disposed between the first and second reflectors are a planar array of radially directed horizontally polarized antenna elements and a planar feed network configured to feed the antenna elements of the planar array. A coaxial feed structure configured to communicate electrical signals to or from the feed network is provided.

The invention discloses a shielding coupling device and method for an electronic interference pod in-situ test, and relates to the technical field of airborne electronic countermeasure equipment testing, the shielding coupling device is a split type shielding coupling device, and a segmented shielding coupling mode is adopted for the frequency band and the installation position of a pod antenna. The device is composed of two high-frequency-band antenna shielding coupling boxes and two low-frequency-band antenna shielding coupling boxes which are respectively used for shielding and coupling front and back high-frequency-band directional antennas of an electronic interference pod and low-frequency-band omnidirectional antennas of the abdomen. According to the shielding coupling device and method for the in-situ test of the electronic interference pod, the shielding coupling box can completely and tightly wrap all transmitting and receiving antennas of the electronic interference pod, isolate external interference electromagnetic signals, reduce leakage of internal electromagnetic signals, reduce the false alarm rate and improve the test precision; in-situ testing can be carried out on the electronic interference pod without constructing a microwave anechoic chamber, so that the testing cost is greatly reduced.

The present disclosure provides a patch antenna, comprising a first insulating dielectric substrate and a second insulating dielectric substrate which are disposed in a stacked manner, a metal layer being provided on the first insulating dielectric substrate, and a radiating patch being provided on the second insulating dielectric substrate. The patch antenna further comprises multiple strip-shaped metal structures, each strip-shaped metal structure penetrating through the first insulating dielectric substrate and the second insulating dielectric substrate, the first end of a strip-shaped metal structure being electrically connected to the metal layer, and the second end of the strip-shaped metal structure being attached to a metal sheet. The multiple strip-shaped metal structures are configured to surround the radiating patch and are spaced apart from the radiating patch, at least two strip-shaped metal structures being located at a first side of the radiating patch, and at least two strip-shaped metal structures being located at an opposite second side; the metal sheets attached to the two strip-shaped metal structures located on the same side and farthest away from each other are bent towards each other, and an included angle greater than or equal to 0 degrees and less than 90 degrees is formed between the bent metal sheets and the second surface of the second insulating dielectric substrate. In addition, the present disclosure also relates to an omni-directional antenna array and a coplanar radiation antenna array comprising the patch antenna.

The utility model discloses an unmanned aerial vehicle monitoring direction-finding antenna with coplanar layout, which comprises an omnidirectional antenna unit array, a directional antenna unit array, a receiving module mounting cavity and an antenna mounting bottom plate, and is characterized in that the omnidirectional antenna unit array, the directional antenna unit array and the receiving module mounting cavity are all arranged on the antenna mounting bottom plate; the omnidirectional antenna unit array and the directional antenna unit array are arranged in a staggered manner in a circumferential array, and the receiving module installation cavity is arranged in the center. The two antenna arrays are combined together in a coplanar layout mode, and mutual interference between the antenna units is reduced in the mode of forming holes in the antenna units and adding an anti-reflection wave-absorbing material. According to the monitoring direction-finding antenna, the height and the size are reduced, a receiving unit installation cavity is reserved in the center of the antenna, the system integration degree is improved, and the monitoring direction-finding antenna has more advantages in vehicle-mounted, portable and other application scenes.

The invention provides a low-profile indoor distribution antenna, and relates to the technical field of antennae, the low-profile indoor distribution antenna comprises a first dielectric substrate, a second dielectric substrate, a third dielectric substrate and a fourth dielectric substrate which are connected in sequence, each structure is compact, and a low-profile effect is realized. Moreover, the plurality of first short-circuit columns, the plurality of second short-circuit columns and the plurality of third short-circuit columns are all distributed in a semicircular manner, so that the roundness of a directional diagram of a radiation signal can be improved. Due to the existence of the second resonant cavity, the function of frequency selection and filtering is realized, so that the low-profile indoor distribution antenna is integrated with the pilot frequency decoupling capability. Compared with the existing quasi-omnidirectional antenna, the low-profile indoor distribution antenna has the advantages of high performance, low profile and simple structure in addition to realizing the out-of-band harmonic suppression function, and realizes the integration and function fusion of the antenna and the filter.

The invention provides a distributed team and group cooperative unmanned aerial vehicle broadband interference device and a distributed team and group cooperative unmanned aerial vehicle broadband interference method. The broadband interference device for the unmanned aerial vehicle comprises a main control unit which is used for generating a digital baseband interference signal according to received unmanned aerial vehicle wireless signal characteristic data, sending the digital baseband interference signal to a radio frequency transceiver, configuring working parameters of the radio frequency transceiver and controlling on and off of a power supply of a radio frequency unit through a power supply unit; the communication unit is used for receiving unmanned aerial vehicle wireless signal feature data detected by unmanned aerial vehicle full-frequency detection equipment in a team and sending the unmanned aerial vehicle wireless signal feature data to the main control unit; the radio frequency unit comprises a radio frequency transceiver and at least one transmitting channel, and each transmitting channel comprises a group of broadband radio frequency power amplifiers and broadband omnidirectional antennas; and a power supply unit; according to the broadband interference method for the unmanned aerial vehicle, through joint optimization design of digital interference signals in multiple dimensions such as a time domain, a frequency domain and a space domain, the weight and the size of portable interference equipment are reduced, and meanwhile, the interference capability to the unmanned aerial vehicle is improved.

The invention provides terminal equipment and a communication control method, and the method comprises the steps: controlling an antenna operation mode of the terminal equipment to be switched from an omnidirectional antenna mode to a directional antenna mode when a signal quality parameter is monitored to be smaller than a first threshold value and the terminal equipment is performing data transmission, the ability of the directional antenna mode to receive and transmit signals in a specific direction is superior to that of the omnidirectional antenna mode. And then displaying the first pose prompt information and the second pose prompt information through a display screen to prompt a user to adjust the spatial pose of the terminal equipment to a target pose. When the terminal equipment is in the target attitude, the main beam of the directional antenna of the terminal equipment is opposite and parallel to the main beam of the antenna of the service base station, the loss of a space link between the terminal equipment and the service base station is minimum, and even if the terminal equipment is in a weak signal area, additional devices are not needed. And the uplink transmitting power and the downlink receiving capability of the terminal equipment are enhanced, so that the user call and the networking application are smoother.

The invention belongs to the technical field of microwave antennas, and discloses a compact broadband low-sidelobe omnidirectional antenna, which comprises a dielectric substrate and a coaxial feed line, and also comprises an 8-element broadband printed oscillator antenna array and a miniaturized planar feed network which are printed on the front and back surfaces of the dielectric substrate in a center staggered symmetrical form, according to the 8-element broadband printed oscillator antenna array, broadband antenna units are symmetrically printed on the two sides of a miniaturized planar feed network in a 2 * 4 scale arrangement mode, one pair of broadband antenna units is symmetrically and compactly arranged in the horizontal direction to form one group, and four groups of broadband antenna units are arranged in the vertical direction. The miniaturized planar feed network comprises a one-to-two primary parallel double-wire network which is excited by a coaxial feed line and is located in the center and a one-to-one four-secondary series-parallel coupling microstrip network which is connected with the one-to-two primary parallel double-wire network. Signals are divided into two paths by the coaxial feeder line through the one-to-two primary parallel double-wire network, and the two paths of signals enter the one-to-four secondary series-parallel coupling microstrip network, and low-sidelobe weighted excitation of the 8-element broadband printed oscillator antenna array is realized through the control of the coupling amount.

A horizontally-polarized omnidirectional antenna, including: a body including: a host printed circuit board (PCB) including: a metal-flooded ground plane, windows, and an interconnect providing a radio frequency (RF) signal splitting off into 2*Z0 transmission lines, a plurality of antenna elements, corresponding to respective windows, including: an antenna PCB including an antenna slot having a pullback region with the host PCB therein without directly contacting the pullback region, the window in the antenna slot, loops of conducting strips at top and bottom sides of the antenna PCB, slightly overlapping to form capacitive elements at overlap regions, a pair of input solder joints at respective input conducting strips on the top of the antenna PCB, on opposite sides of the window, a transmission feed solder joint directly between the pair of input solder joints across the window, connected to a Z0 feed line, and an RF connector receiving an antenna power supply.

The present application provides an ultra-wideband low-profile vertically polarized omnidirectional antenna, comprising a metal floor, a radiation arm, and a metal disc. The radiation arm comprises corrugated radiation arms and long straight radiation arms which are alternately arranged in a radial shape; the top of the radiation arm is fixedly connected to the metal disc; the outer ends of the corrugated radiation arms are connected to the metal floor; and the parts inside the outer ends of the corrugated radiation arms are suspended above the metal floor. According to the antenna of the present invention, the corrugated radiation arms are combined with the metal disc at the top, thereby reducing the profile height of the antenna; the long straight radiation arms can generate resonance points at high-frequency points, and the resonance points are combined with resonance points generated by the corrugated radiation arms, thereby expanding the bandwidth of the antenna; six arc-shaped grooves are etched in the metal floor, so that the radiation performance at the high-frequency points can be improved, thereby ensuring the stability of the pattern of the antenna in the whole working frequency band; and the outermost end of the metal floor is bent upwards and inwards, thereby reducing the plane size of the antenna while achieving a low profile and not affecting the performance of the antenna.

The embodiment of the invention provides a communication method, terminal equipment and an antenna assembly. The communication method is used for communication between first equipment and second equipment. The communication method comprises the following steps: acquiring first communication quality, wherein the first communication quality is determined according to signal quality when a first device communicates with a second device through an omnidirectional antenna; acquiring second communication quality, wherein the second communication quality is determined according to signal quality when the first device communicates with the second device through the directional antenna; determining a target antenna in the omnidirectional antenna and the directional antenna according to the first communication quality and the second communication quality, wherein the target antenna comprises at least one of the omnidirectional antenna and the directional antenna; and establishing communication between the first device and the second device through the target antenna. The communication quality between devices can be improved or the cost of the devices can be reduced.

The utility model relates to the technical field of antenna structures, and provides a dual-port omnidirectional antenna, which comprises a dielectric substrate; the first antenna main body unit and the second antenna main body unit are arranged on the same surface of the dielectric substrate, the frequency bands of the first antenna main body unit and the second antenna main body unit are different, and the first antenna main body unit and the second antenna main body unit are arranged at intervals along the diagonal line of the dielectric substrate; the first antenna main body unit comprises a main body part and a first extension branch, the first extension branch bends and extends from one end, close to the second antenna main body unit, of the main body part and is spaced from the main body part to form a resonant filtering structure, and the resonant filtering structure is used for generating a radiation zero point in a corresponding frequency band of the second antenna main body unit; the second antenna main body unit is provided with a bending slot, the bending slot is used for generating a radiation zero point in a corresponding frequency band of the first antenna main body unit, and the dual-port omnidirectional antenna is beneficial to miniaturization, good in isolation and excellent in radiation performance.

The invention relates to the field of wireless communication, in particular to aerospace vehicle wireless communication, and discloses a dual-frequency dual-high measurement and control tracking system and method based on trajectory prediction and constellation mapping. The system comprises an L omnidirectional antenna, a C directional antenna, a dual-frequency information extraction and fitting module, a track constellation mapping and module, an antenna parameter dynamic adjustment module and an antenna tracking performance monitoring module. The dual-frequency information extraction and fitting module receives data of the two antennas, extracts flight information of a fitted aircraft and outputs coordinate conversion parameters; the trajectory constellation mapping and module predicts a short-term flight trajectory of the aircraft according to the coordinate conversion parameters and outputs flight trajectory constellation coordinate range information; the antenna parameter dynamic adjustment module sets a tracking interval according to flight path constellation coordinate range information, and outputs high-precision antenna pointing information to control a C directional antenna in combination with directional antenna parameters; the antenna tracking performance monitoring module is used for evaluating the directional performance of the C directional antenna.

The invention relates to the technical field of antennas, in particular to a multi-slot ultra-wideband omnidirectional monopole antenna, which comprises a radiation patch, a metal ground, a gradient microstrip line and a dielectric plate, and is characterized in that the radiation patch and the metal ground are respectively arranged on the top surface and the bottom surface of the dielectric plate, and the gradient microstrip line is connected with the radiation patch and an external feed power supply; wherein the upper half part of the radiation patch is provided with a plurality of rectangular grooves, a slender gap and a rotary rectangular groove, and the lower half part of the radiation patch is arranged to be in a symmetrical nine-step shape; the metal ground covers the lower half part of the bottom of the dielectric plate, and the top end of the metal ground is designed into a 1 / 4 arc shape and is provided with two slender rectangular grooves. The gradient microstrip line is connected with the radiation patch and the feed source, and the upper end narrow part is connected with the radiation patch, gradually changes to the lower end wide part and is connected with the feed source through the rectangular patch. Compared with a traditional omnidirectional antenna, the omnidirectional antenna is simple in structure, low in profile, low in manufacturing cost and suitable for rapid printing and manufacturing, and overcomes the defects that an existing omnidirectional antenna is narrow in frequency band, large in out-of-roundness and the like.

The utility model provides an omnidirectional antenna assembly and an electronic device so as to avoid the reduction of the influence of a metal plate on the radiation pattern and efficiency of an antenna structure, and equivalent magnetic dipoles generate horizontal polarization radiation. In the omnidirectional antenna assembly provided by the utility model, the metal plate and the antenna structure are arranged on the same side of the circuit board, the metal plate is used for realizing heat dissipation of the omnidirectional antenna assembly, the metal plate and the antenna structure are adjacently arranged in the direction parallel to the circuit board, and the projection part of the antenna structure and the projection part of the circuit board coincide. The antenna structure can be exposed while the metal plate can dissipate heat of the antenna structure, so that the influence of the metal plate on the radiation pattern and efficiency of the antenna structure is reduced, and the radiation pattern and efficiency of the antenna structure and the metal plate are improved. The electronic equipment provided by the embodiment of the invention is fiber to the room (Fiber To Room, short for FTTR), so that bidirectional communication between the user equipment and the communication system can be realized.

The invention belongs to the technical field of radio frequency thunder and lightning positioning, and particularly discloses a wind turbine generator lightning arresting detection method based on radio frequency electromagnetic detection. According to the invention, the initial layout of the directional antenna is planned through the signal-to-noise ratio, the elevation angle and the number of stations in a constrained manner, thereby overcoming the defects that the omnidirectional antenna is low in signal-to-noise ratio and is liable to be interfered in a wind power plant, and achieving the selective focusing of a target airspace and the collection of high-signal-to-noise-ratio data. And station distribution parameters are iteratively optimized by simulating lightning signals, so that the capability of monitoring lightning stroke areas of key components of the fan is enhanced. Time parameters are accurately extracted by using the high gain characteristic of the directional antenna, and high-precision measurement of the time difference of arrival is ensured in combination with a unified time base alignment technology. Finally, a high-resolution three-dimensional lightning stroke channel form is inversely generated based on a spherical propagation model, the problem of detection interference in a complex environment of a wind power plant is systematically solved, and an accurate three-dimensional observation basis is provided for lightning stroke protection design and accident analysis.

To provide an omni-directional antenna with a simple configuration.SOLUTION: An antenna includes a main body. The main body includes: a reception unit; a first conversion unit; a second conversion unit; and a radiation unit. The reception unit receives an electromagnetic wave of a TE10. The first conversion unit is connected to the reception unit and converts a TE10 mode into a TE20 mode in a waveguide. The second conversion unit is connected to the first conversion unit and converts the TE20 mode into a TE01 mode in the waveguide. The radiation unit is connected to the second conversion unit. The reception unit, the first conversion unit, the second conversion unit, and the radiation unit are disposed along a predetermined radiation axis.SELECTED DRAWING: Figure 1

The present invention discloses a dual-polarization omnidirectional rectenna using a radio frequency power combining scheme. The antenna includes an orthogonally arranged horizontal polarization unit and a vertical polarization unit. The horizontal polarization unit includes a horizontal polarization group, which includes a tapered balun. The center point of the tapered balun is a feeding point. The tapered balun has a plurality of fan-shaped radiating branches evenly distributed circumferentially, and each of the radiating branches is connected to the tapered balun via a gradient microstrip line. The vertical polarization unit includes a reflective layer and a vertical polarization group parallel to the reflective layer. The vertical polarization group includes a connected gradient balun and a dipole, and the feeding point is located at the center of the gradient balun. The present invention provides a circumferentially arranged omnidirectional antenna array to receive horizontally polarized electromagnetic waves, and designs a four-dipole array to receive vertically polarized electromagnetic waves. This allows the antenna to operate in multiple polarization states and has good omnidirectional characteristics.

The utility model discloses an antenna performance testing device, which belongs to the technical field of unmanned aerial vehicle testing equipment, and comprises a device main body, the device main body comprises a fixing part, a mounting part and an electric drive steering engine, and the mounting part comprises a mounting plate and a mounting nut; the fastening structure comprises a fastening block, a mounting cylinder, a rotating disc, a worm gear ring and a rotating worm, the mounting cylinder is provided with a sliding groove, and the rotating disc is provided with a moving groove; according to the utility model, through the arrangement of the fastening structure, a user places one end part, with a threaded hole, of the omnidirectional antenna among a plurality of fastening blocks, and the worm is rotated to rotate around the axial direction of the worm so as to drive the rotating disc which is coaxially installed with the worm gear ring to rotate, so that the plurality of fastening blocks move towards the direction close to the circle center of the rotating disc at the same time; and until the circumferential end surfaces of the plurality of fastening blocks are in contact with the circumferential side wall of the omnidirectional antenna, the axial direction of the omnidirectional antenna coincides with the axial direction of the mounting nut, so that the fastening force between the omnidirectional antenna and the mounting nut is ensured to be uniformly distributed.

The utility model discloses an omnidirectional antenna, which comprises a support block and a plurality of double-cone units which are arranged in the support block at intervals, and a four-power divider is arranged at one end of the support block; the double-cone unit comprises an upper vibrator and a lower vibrator, necking ends of the upper vibrator and the lower vibrator are oppositely arranged, the upper vibrator and the lower vibrator are riveted on the supporting block, a cable locking structure is arranged on the lower vibrator, and a conductive tank spring is embedded in the upper vibrator; the antenna further comprises a feed cable sequentially penetrating through the upper oscillator and the lower oscillator, the cable locking structure is used for locking the feed cable, and the conductive tank spring is used for being inserted into an inner conductor of the feed cable. The feed cable is connected with the four power dividers; the four-way power divider also comprises a protective housing. The supporting block and the four-way power divider are both installed in the protective housing. The antenna has good consistency in antenna indexes such as out-of-roundness, standing wave, gain and the like.

The application relates to the field of antennas and discloses an ultra-wideband omnidirectional antenna and a detection device. The ultra-wideband omnidirectional antenna comprises a conical conductive structure, a grounding conductive structure, a feeding structure and a signal reflection structure. The grounding conductive structure comprises a connecting surface. The top end of the conical conductive structure is connected to the connecting surface of the grounding conductive structure, and the axis of the conical conductive structure is perpendicular to the end surface of the grounding conductive structure. The grounding conductive structure comprises a high-frequency signal end and a low-frequency signal end. The distance from the high-frequency signal end to the top end of the conical conductive structure is smaller than the distance from the low-frequency signal end to the top end of the conical conductive structure. The feeding structure is electrically connected to the top end of the conical conductive structure. The signal reflection structure is connected to the end surface of the grounding conductive structure where the grounding conductive structure is connected to the conical conductive structure, and the signal reflection structure is arranged between the high-frequency signal end and the top end of the conical conductive structure. Through the arrangement, the ultra-wideband omnidirectional antenna can generate gain for radio signals of a lower frequency.

The utility model discloses a 1710-2690 MHZ dual-polarized two-port omnidirectional antenna, and relates to the technical field of antennas for communication. The omnidirectional antenna comprises an antenna base, a waterproof connector is arranged on the antenna base, one ends of two coaxial cables penetrate through the antenna base and then enter an outer cover of the omnidirectional antenna, a supporting rod is arranged in the outer cover, the lower end of the supporting rod is fixedly connected with the antenna base, and the waterproof connector is arranged on the antenna base. Six dual-polarized oscillators are fixed on the supporting rod at intervals, two one-to-two power dividers and four one-to-three power dividers are fixed on the supporting rod, and the dual-polarized oscillators, the one-to-three power dividers and the one-to-two power dividers are connected through coaxial cables. The omnidirectional antenna can effectively utilize antenna feeder site resources, and is small in size and simple in structure.

The utility model relates to the antenna technology, and provides a combined antenna device and electronic equipment, the combined antenna device comprises a metal bottom plate, a metal surrounding edge, a directional antenna, an omnidirectional antenna, a power divider, a change-over switch and a radio frequency input interface, the omnidirectional antenna is fixed on the outer side of the metal surrounding edge, the metal surrounding edge is reasonably used as the metal ground of the omnidirectional antenna, and the radio frequency input interface is arranged on the metal surrounding edge. A directional antenna and an omnidirectional antenna are integrated, and the two antennas are ensured to work in a time-sharing manner and do not influence each other by controlling the switching-on and switching-off of the change-over switch; the omni-directional antenna is small in occupied area, size and weight and does not affect installation of the directional antenna, and compared with an existing combined antenna product, the omni-directional antenna is small in size, low in cost and convenient to switch and has great practical use value.

The utility model relates to the technical field of underground pipeline detection devices, in particular to a detection device with an adjusting function, which can ensure that a first adjusting rod and a fixed rod are kept vertical during detection and use, so that the detection and use of the device are prevented from being influenced. Comprising a detection handle, the left side of the bottom of the detection handle is fixedly connected with a connecting rod, the lower end of the connecting rod is connected with an omnidirectional antenna bag, the lower end of the omnidirectional antenna bag is connected with a fixing rod, the bottom end of the fixing rod is fixedly connected with the top end of a folding clamping seat, and the bottom end of a folding block is fixedly connected with a first adjusting rod; the folding block is rotatably installed on the folding clamping base through cooperation with the hinge, the clamping block is integrally and fixedly arranged at the top end of the folding block, a bolt pin hole is formed in the clamping block in a penetrating mode, a bolt pin is inserted into the folding clamping base, the clamping block is clamped on the folding clamping base through cooperation of the bolt pin and the bolt pin hole, and the bolt pin is sleeved with a lock nut in a screwed mode. The rear end of the lock nut abuts against the front end of the folding clamping base.