CN202205881U - Wireless transmitting antenna with double-cone structure - Google Patents

Abstract

The utility model belongs to the technical field of wireless transmitting antennas, and relates to a small medium wave band wireless transmitting antenna device, in particular to a wireless transmitting antenna with a double-cone structure. A distribution room is arranged in an inner space of a support seat with a box type structure, the support seat is formed by four vertical steel tubes, a metal net is arranged on the periphery of the support seat, a lower cone-shaped radiating body is arranged at the end of the upper portion of the support seat, a metal net is arranged on the periphery of the lower cone-shaped radiating body of a frame structure formed by metal radiating rods, a lower medium chamber is arranged at the top of the lower cone-shaped radiating body, a hard material quilting frame structure or a central cavity type column is arranged at the top end of the lower medium chamber in the vertical direction, an upper cone-shaped radiating body is fixedly arranged at the top of the column, and a plurality of layers of cross members are transversely arranged on metal radiating rods of the upper cone-shaped radiating body at equal interval. The wireless transmitting antenna with the double-cone structure is simple in structure, small in size, light in weight, low in manufacture cost, simple to install and small in occupied space, does not need to lay earth mats, and can be erected in a service zone or even on a building.

Description

A kind of bipyramid structural formula radio emissioning antenna

Technical field

The utility model belongs to the radio emissioning antenna technical field, relates to a kind of small-sized medium wave band radio emissioning antenna device, particularly a kind of bipyramid structural formula radio emissioning antenna.

Background technology

At present, what the medium wave broadcast transmitting station generally used is that traditional iron tower adds the antenna system of burying the ground earth mat, and this traditional antenna systems has two shortcomings: the one, and floor space is excessive, and transmitting station can only be put into population aggravation's service area outside; The 2nd, be covered with 50 to 70 centimeters soil layers above the huge earth mat, not only cause the RF energy loss, and antenna parameter receive influence that precipitation and vegetation change greatly, poor stability.In addition, the maintenance of earth mat, replacing also very bother.The history that scholar both domestic and external and expert have carried out research and development, the small-sized medium wave radiating antenna of application has the course in year surplus in the of nearly ten, and further improves and promote fruitful medium wave micro radio transmitting antenna, has become the inevitable development trend of industry.Traditional λ/2 or λ/4 medium wave pylon antennas, its size can be compared with wavelength mutually, and the principal element that influences its radiation efficiency is size (efficient is closely related with size).When reducing size to the time, can regard a point approx as, its radiation efficiency extremely low (efficient is uncorrelated with size) much smaller than wavelength (more than little two one magnitude, promptly＜λ/100).And size is when being between the two (being λ/10-λ/20), the factor that influences radiation efficiency except antenna size, also with by the boundary condition that shape, structure determined relevant (efficient is critical relevant with size).Obviously, this is the size range that realizes that antenna miniaturization is concerned about.The applicant's ZL200620009998.2 patent discloses a kind of " small-sized medium wave radiating antenna "; Practical application and preliminary the popularization in this process of applying and updating, are further strengthened the bipyramid design feature of this small size antenna; Improve the design and processes of its radiator; Improve machinery and electric property, and checking becomes the focus that present industry is inquired in long wave and short-wave band Application feasibility.

Summary of the invention

The goal of the invention of the utility model is to overcome the shortcoming that prior art exists; Seek to design the radio emissioning antenna that a kind of small capacity double wimble structure is provided; This antenna floor space is little, need not lay earth mat, and upper cone is the high wind resistance flexible back bone structure that no plate does not have net, and lower cone increases skirt section metallic reflection net; With the radiation efficiency of further raising low-frequency range, be used for the anxious at present improved small-sized medium wave radio transmission technical field of treating.Usually, the effect of radio emissioning antenna be the energy efficient rate eradiation of the transmitter of sending here through transmission line in the space, reach this purpose, should realize two couplings: one is that transmission line is followed the coupling between the radiator; Another is the coupling that radiator is followed the space, and this is the key problem that Antenna Design will solve.The transiens boundary condition that the shape of the bipyramid radiator of the utility model design and the density gradually changeable of structure are determined has guaranteed at the cancellation earth mat and has reduced significantly under the prerequisite of size, can obtain best space matching effect.

To achieve these goals, the agent structure of the utility model comprise between supporting seat, upper conical radiant body, bottom dielectric cavity, column, ring flange, metal radiation, multilayer stull, insulation stay cord, steel wire rope, insulator, allotment, inferior pyramidal radiant body, metal radiation, metallic rod, wire netting; The interior space of the supporting seat of the block form structure that is made up of four vertical steel pipes is equipped with between allotment; Be shaped on wire netting around the supporting seat; The upper end of supporting seat is shaped on the inferior pyramidal radiant body; Be shaped on wire netting on the periphery of the inferior pyramidal radiant body of the frame structure that constitutes by the metal radiation; The top of inferior pyramidal radiant body is shaped on the bottom dielectric cavity, and the top of bottom dielectric cavity vertically is shaped on the column of hard material girder formula structure or center cavity formula, and the column top fixedly is shaped on the upper conical radiant body; The bottom of upper conical radiant body and the junction of column are shaped on the 3-4 insulated stay cord of expansion slant-pull structure, and the insulation stay cord hands over junction isolation to be connected to form the fixed strain mechanism of insulation system by the multistage steel wire rope; Be shaped on the fixed strain mechanism with the stay cord same structure that insulate in the middle part of column, form fixed strain system the entire antenna device; The junction of column top and upper conical radiant body is shaped on ring flange, and proportional spacing laterally is shaped on the multilayer stull on the expansion metal radiation of upper conical radiant body; The start point of metal radiation is 90 °.

Symmetry is being fixed wind resistance insulation stay cord between column of the utility model and ground or the inferior pyramidal radiant body; The insulation stay cord is by the multistage steel wire rope and be connected the insulator between the multistage steel wire rope or be made up of insulating material, and the purpose of insulation stay cord is wind resistance, the stability that increases the utility model; The circular cone of cone of radiation body formation or the cone angle of pyramid are 90 ° basically up and down; The column of metal girder formula structure is hollow rod shape or column structure, and the shaft-like column of hollow is in light weight, and rigidity is higher when size is big, stability is better for column, wind resistance is stronger, is adapted at long-wave band and adopts.

The utility model is simple in structure, and size is little, in light weight, cost is low, installation is simple, and floor space is little, need not lay earth mat, can be erected in the service area even on the building; It is convenient that the utility model is safeguarded, changed; Be the further improvement to small-sized medium wave radiating antenna, additional, perfect and Application Expansion; Can be widely used in the emission of medium wave, long wave and shortwave wireless signal, be particularly suitable for the middle low power transmitting station below the 50KW.The structure height of the utility model bipyramid radiator has been taken into account antenna performance, coverage effect and construction cost; Excellent effect is arranged; Its operating state is a kind of true resonance or complex resonance state; It can make Q-gain be directly delivered on the radiator, thereby has guaranteed under the situation that size reduces, and also makes radiation efficiency reach the level that is not less than traditional antenna.

Description of drawings

Fig. 1 is the structural principle sketch map of the utility model.

Fig. 2 is the structural principle sketch map of the utility model embodiment 1.

Embodiment

Below through embodiment and combine accompanying drawing to be described further.

The agent structure of present embodiment comprises between supporting seat 1, upper conical radiant body 2, bottom dielectric cavity 3, column 4, ring flange 5, metal radiation 6, multilayer stull 7, insulation stay cord 8, steel wire rope 9, insulator 10, allotment 11, inferior pyramidal radiant body 12, metal radiation 13, metallic rod 14, wire netting 15 and 16; The interior space of the supporting seat 1 of the block form structure that is made up of four vertical steel pipes is equipped with between allotment 11; Be shaped on wire netting 16 around the supporting seat 1; The upper end of supporting seat 1 is shaped on inferior pyramidal radiant body 12; Be shaped on wire netting 15 on the periphery of the inferior pyramidal radiant body 12 of the frame structure that constitutes by metal radiation 13; The top of inferior pyramidal radiant body 12 is shaped on bottom dielectric cavity 3, and the top of bottom dielectric cavity 3 vertically is shaped on the column 4 of hard material girder formula structure and center cavity formula, and column 4 tops fixedly are shaped on upper conical radiant body 2; The junction of the bottom of upper conical radiant body 2 and column 4 is shaped on the 2-4 insulated stay cord 8 of expansion slant-pull structure, and insulation stay cord 8 hands over junction isolation 10 to be connected to form the fixed strain mechanism of insulation system by multistage steel wire rope 9; Be shaped on the fixed strain mechanism with stay cord 8 same structures that insulate in the middle part of column 4, form fixed strain system the entire antenna device; The junction of column 4 tops and upper conical radiant body 2 is shaped on ring flange 5, and proportional spacing laterally is shaped on multilayer stull 7 on the expansion metal radiation 6 of upper conical radiant body 2; The start point of metal radiation 6 is 90 °.

The inferior pyramidal radiant body 12 of present embodiment comprises many of the tapered downward radiation shape metal radiations 13 that are uniformly distributed with, is fixed on the wire netting 15 between the metal radiation 13; Metal radiation 13 constitutes the following awl radiant body 12 of circular cone or pyramid with wire netting 15, and the circular cone that inferior pyramidal radiant body 12 constitutes or the cone angle of pyramid are 90 °; Peripheral skirt section to ground, inferior pyramidal radiant body 12 belows is installed with the auxiliary radiation face by metallic rod 14 and wire netting 16; Be provided with between allotment 11 in the inferior pyramidal radiant body 12 lower inner spaces, have allotting network to pass through the feedback pipe and link to each other with transmitter, the body of transmitter steel construction all is connected in the protection earth connection; The structural design of this boundary condition has guaranteed that most radio-frequency currents forms current return circuit via inferior pyramidal radiant body 12, has avoided common ground connection loss, and ground wire mainly is the protective ground structure that is provided with for security purpose.

Embodiment 1:

The small-sized bipyramid transmitting antenna that present embodiment relates to shown in accompanying drawing 2, comprise between the allotment that is installed in down awl bottom 11, be installed in 11 tops between allotment radiator, be installed in the main polarization coil in the bottom dielectric cavity 3 on the radiator and is connected with main polarization coil be installed between allotment 11 interior impedance transformers; Radiator comprises metallic upper conical radiant body 2, be installed in metal matter column 4 below the upper conical radiant body 2, be installed in the bottom dielectric cavity 3 below the column 4; Upper conical radiant body 2 comprises and is fixed on to become above the ring flange 5 back tapers circular cone or the pyramid metallic framework that the multilayer stull 7 of radial many metal radiations 6 that are uniformly distributed with and center forms that make progress that end one circle of metal radiation 6 connects into annular with metallic cable; Symmetry is being fixed wind resistance insulation stay cord 8 between column 4 and the steel construction inferior pyramidal radiant body 12, and insulation stay cord 8 is made up of multistage steel wire rope 9 and the insulator 10 that is connected between the multistage steel wire rope 9; The circular cone that upper conical radiant body 2 constitutes or the cone angle of pyramid are 90 °; Column 4 is the shaft-like of hollow; Inferior pyramidal radiant body 12 is installed below the bottom dielectric cavity 3; Inferior pyramidal radiant body 12 comprises many of the tapered downward radiation shape metal radiations 13 that are uniformly distributed with, is fixed on the wire netting 15 between this metal radiation 13, and metal radiation 13 constitutes the following awl radiant body 12 of circular cone or pyramid with wire netting 15; The circular cone that inferior pyramidal radiant body 12 constitutes or the cone angle of pyramid are 90 °.

Present embodiment is owing to cancelled earth mat; Be reduced to tens square metres to the floor space of antenna from tens mu; DRM application for unattended small-power is layouted covering and future flexibly is particularly suitable for setting up highland or roof, accomplishes equilibrium, reasonably covering; Reduce energy resource consumption, reduce electromagnetic pollution; Can be widely used in the emission of medium wave radio signal, be particularly suitable for the middle low power transmitting station below the 50KW, also can be applicable to long wave navigation, time service platform and special-purpose radio transmission occasions such as shortwave transfer of data platform.

Claims (2)

1. bipyramid structural formula radio emissioning antenna is characterized in that agent structure comprises between supporting seat, upper conical radiant body, bottom dielectric cavity, column, ring flange, metal radiation, multilayer stull, insulation stay cord, steel wire rope, insulator, allotment, inferior pyramidal radiant body, metal radiation, metallic rod, wire netting; The interior space of the supporting seat of the block form structure that is made up of four vertical steel pipes is equipped with between allotment; Be shaped on wire netting around the supporting seat; The upper end of supporting seat is shaped on the inferior pyramidal radiant body; Be shaped on wire netting on the periphery of the inferior pyramidal radiant body of the frame structure that constitutes by the metal radiation; The top of inferior pyramidal radiant body is shaped on the bottom dielectric cavity, and the top of bottom dielectric cavity vertically is shaped on the column of hard material girder formula structure or center cavity formula, and the column top fixedly is shaped on the upper conical radiant body; The bottom of upper conical radiant body and the junction of column are shaped on the 3-4 insulated stay cord of expansion slant-pull structure, and the insulation stay cord hands over junction isolation to be connected to form the fixed strain mechanism of insulation system by the multistage steel wire rope; Be shaped on the fixed strain mechanism with the stay cord same structure that insulate in the middle part of column, form fixed strain system the entire antenna device; The junction of column top and upper conical radiant body is shaped on ring flange, and proportional spacing laterally is shaped on the multilayer stull on the expansion metal radiation of upper conical radiant body; The start point of metal radiation is 90 °.

2. bipyramid structural formula radio emissioning antenna according to claim 1; It is characterized in that the inferior pyramidal radiant body comprises many of the tapered downward radiation shape metal radiations that are uniformly distributed with, is fixed on the wire netting between the metal radiation; The metal radiation constitutes the following awl radiant body of circular cone or pyramid with wire netting, and the circular cone that the inferior pyramidal radiant body constitutes or the cone angle of pyramid are 90 °; Peripheral skirt section to ground, inferior pyramidal radiant body below is installed with the auxiliary radiation face by metallic rod and wire netting; Allotting network in the inferior pyramidal radiant body lower inner space links to each other with transmitter through the feedback pipe, and the body of transmitter steel construction is connected in the protection earth connection.

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