CN205898905U - Dipole antenna and use this dipole antenna's omni -direction probe - Google Patents

Abstract

The utility model relates to a technical field is measured to the electromagnetic field, particularly, relates to a dipole antenna and omni -direction probe. Dipole antenna includes: the antenna main part, the antenna main part includes the sub - antenna of multistage, the axis of the sub - antenna of multistage is all on same straight line, and in every two adjacent sub - antennas, the width that is close to the sub - antenna of the first end of antenna main part is greater than the width near the sub - antenna of the second end of antenna main part, every section sub - antenna is kept away from the tip of the first end of antenna main part all is connected with connecting resistance, it is adjacent sub - antenna all passes through connecting resistance connects, every adjacent two among the connecting resistance, be close to the connecting resistance's of the first end of antenna main part resistance is greater than is close to the connecting resistance's of the second end of antenna main part resistance. This dipole antenna has increased dipole antenna's equivalent length, extends the measurement frequency range of probe, especially improves the frequency response characteristic of low -frequency range, realizes the receipt to broadband electromagnetic field signal is better.

Description

Dipole antenna and the omni-directional probe using this dipole antenna

Technical field

This utility model is related to electromagnetic field measurementses technical field, in particular to a kind of dipole antenna and use The omni-directional probe of this dipole antenna.

Background technology

At present, when radio frequency electromagnetic field is measured, generally require and popped one's head in using three axle isotropism, can Realize the measurement to three dimensions comprehensive electromagnetic field.And according to ieee-1309 standard, the support bar of radio-frequency electromagnetic Field probe, that is, High resistant line part needs all to become 54.7 ° with x, y, z three axle, and is mutually perpendicular to before x, y, z three axle.Right in testing standard and market The requirement of rf electric field probe operating frequency range is typically 100khz-3ghz, has been even up to 100khz-6ghz.Current In three axle isotropism probes, in order to ensure the size popped one's head in certain a small range so that the used antenna of probe Length is very short, thus it is poor to cause existing rf electric field probe generally to respond in low-frequency range.

Therefore, the omni-directional probe of a kind of Frequency Response that can expand probe, particularly low-frequency range Frequency Response becomes Problem demanding prompt solution now.

Utility model content

In view of this, the purpose of this utility model embodiment is to provide a kind of dipole antenna and uses this dipole The omni-directional probe of antenna, can expand the Frequency Response of probe, particularly low-frequency range Frequency Response.

In a first aspect, this utility model embodiment provides a kind of dipole antenna, comprising: antenna body；

Described antenna body includes multistage sub-antenna；

In two all on same straight line and often adjacent described sub-antennas of the axis of sub-antenna described in multistage, close The width of the sub-antenna of the first end of described antenna body is more than the width of the sub-antenna at the second end near described antenna body；

The end of every section of described sub-antenna first end away from described antenna body is respectively connected with connection resistance；Adjacent institute State sub-antenna all to connect by described connection resistance；

Often in adjacent two described connection resistance, big near the resistance of the connection resistance of the first end of described antenna body Resistance in the connection resistance at the second end near described antenna body.

Second aspect, this utility model embodiment also provides a kind of omni-directional probe, comprising: three pieces of circuit boards；

Three pieces of described circuit boards connect two-by-two, form an equilateral triangular prism, and three pieces of described circuit boards are respectively described Three sides of equilateral triangular prism；

Dipole antenna as described in above-mentioned first aspect is provided with every piece of described circuit board；

Angle between the incline of the axis of described antenna body and described equilateral triangular prism is 54.7 °.

In conjunction with second aspect, this utility model embodiment provides the first possible embodiment of second aspect, often Dipole antenna on individual described circuit board all has two；

The axis of two described dipole antennas is on same straight line；

In two described dipole antennas, the first end of antenna body is close to each other, and passes through between described antenna body Schottky detector diode connects.

In conjunction with second aspect, this utility model embodiment provides the possible embodiment of second of second aspect, institute State antenna body and be arranged on the side near other described circuit boards for the described circuit board；

Described connection resistance and described Schottky detector diode are arranged on described circuit board away from other described electricity The side of road plate.

In conjunction with second aspect, this utility model embodiment provides the third possible embodiment of second aspect, and two On dipole antenna described in root, two binding posts near described Schottky detector diode connect one respectively by electric capacity High-ohmic resistor is arranged.

In conjunction with second aspect, this utility model embodiment provides the 4th kind of possible embodiment of second aspect, with The high-ohmic resistor row that two described dipole antennas connect respectively is located at the both sides of described circuit board, and two described high resistants respectively Resistor chain is symmetrical arranged along described circuit board.

In conjunction with second aspect, this utility model embodiment provides the 5th kind of possible embodiment of second aspect, institute The axis stating high-ohmic resistor row is vertical with the axis of described dipole antenna.

In conjunction with second aspect, this utility model embodiment provides the 6th kind of possible embodiment of second aspect, institute The one end stating high-ohmic resistor row away from described electric capacity is also associated with high resistant line.

In conjunction with second aspect, this utility model embodiment provides the 7th kind of possible embodiment of second aspect, institute State high resistant line to be attached on flexible PCB.

In conjunction with second aspect, this utility model embodiment provides the 8th kind of possible embodiment of second aspect, also Including base；

Described base is provided with draw-in groove；Described circuit board is installed in described draw-in groove.

Dipole antenna and the omni-directional probe using this dipole antenna, antenna body is divided into multistage sub-antenna, And the width of each cross-talk antenna is gradually lowered to the other end by one end of antenna body, meanwhile, between adjacent sub-antenna By connect resistance couple together, and connect resistance resistance be gradually reduced to the other end by one end of antenna body so that idol Pole sub-antenna can preferably receive the electromagnetic field signal of different frequency, increased the equivalent length of dipole antenna, expand and visit The measurement frequency scope of head, particularly improves the Frequency Response of low-frequency range, realizes broadband electromagnetic field signal is preferably received.

For enabling above-mentioned purpose of the present utility model, feature and advantage to become apparent, preferred embodiment cited below particularly, and Accompanying drawing appended by cooperation, is described in detail below.

Brief description

In order to be illustrated more clearly that the technical scheme of this utility model embodiment, below will be to use required in embodiment Accompanying drawing be briefly described it will be appreciated that the following drawings illustrate only some embodiments of the present utility model, therefore should be by Regard the restriction to scope as, for those of ordinary skill in the art, on the premise of not paying creative work, also may be used To obtain other related accompanying drawings according to these accompanying drawings.

Fig. 1 shows a kind of structural representation of dipole antenna that this utility model embodiment is provided；

Fig. 2 shows in a kind of omni-directional probe that this utility model embodiment is provided, the schematic elevation view of circuit board；

Fig. 3 shows in a kind of omni-directional probe that this utility model embodiment is provided, the schematic rear view of circuit board；

Fig. 4 shows the principle schematic in the omni-directional probe that this utility model embodiment is provided；

Fig. 5 shows the principle schematic in the omni-directional probe that this utility model embodiment is provided；

Fig. 6 shows the structural representation of the omni-directional probe that this utility model embodiment is provided；

Illustrate:

Antenna body 10, sub-antenna 101, connection resistance 102；

Circuit board 20, dipole antenna 30, Schottky detector diode 40, electric capacity 50, high-ohmic resistor row 60, high resistant line 70th, base 80, draw-in groove 90.

Specific embodiment

Below in conjunction with accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is carried out clearly Chu, it is fully described by it is clear that described embodiment is only a part of embodiment of this utility model, rather than whole realities Apply example.The assembly of this utility model embodiment generally described and illustrated in accompanying drawing herein can be come with various different configurations Arrangement and design.Therefore, below the detailed description of the embodiment of the present utility model providing in the accompanying drawings is not intended to limit Claimed scope of the present utility model, but it is merely representative of selected embodiment of the present utility model.Based on this utility model Embodiment, the every other embodiment that those skilled in the art are obtained on the premise of not making creative work, all Belong to the scope of this utility model protection.

Pop one's head in when measuring for radio frequency electromagnetic field using three axle isotropism at present, due to three current axles Each pop one's head in the problem that this body structure exists to communication, low-frequency range accordingly poor it is impossible to meet required by ieee-1309 standard The requirement less than 3db for the fluctuation in bandwidth, based on this, the application provides a kind of dipole antenna and using this dipole antenna Omni-directional is popped one's head in, and can expand the Frequency Response of probe, particularly low-frequency range Frequency Response.

For ease of understanding to the present embodiment, below to a kind of dipole antenna disclosed in this utility model embodiment Describe in detail, this dipole antenna is mainly used in omni-directional probe, for the radio frequency electromagnetic field to omnidirectional in three dimensions Detected, furthermore it is also possible to be used in other occasions stricter to antenna requirement.

It should be noted that in description of the present utility model, term " " center ", " on ", D score, "left", "right", " perpendicular Directly ", the orientation of instruction such as " level ", " interior ", " outward " or position relationship are based on orientation shown in the drawings or position relationship, are only For the ease of description this utility model with simplify description, rather than instruction or the hint device of indication or element must have specific Orientation, with specific azimuth configuration and operation, therefore it is not intended that to restriction of the present utility model.Additionally, term " the One ", " second ", " the 3rd " are only used for describing purpose, and it is not intended that indicating or hint relative importance.

In addition, of the present utility model description in, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or is integrally connected；Can be It is mechanically connected or electrically connect；Can be to be joined directly together it is also possible to be indirectly connected to by intermediary, can be two The connection of element internal.For the ordinary skill in the art, above-mentioned term can be understood in this practicality with concrete condition Concrete meaning in new.

It should be noted that the two ends of antenna body 10 are referred to as first end and second by this utility model embodiment End, but in fact, the two ends of antenna body 10 do not have this differentiation, only it is intended merely to description convenient.Therefore antenna body First end and the second end should not become the restriction of this utility model embodiment.

Shown in Figure 1, the dipole antenna that this utility model embodiment is provided includes: antenna body 10；

Described antenna body 10 includes multistage sub-antenna 101；

The axis of sub-antenna 101 described in multistage is all on same straight line, and often adjacent two described sub-antennas 101 In, it is more than the second end near described antenna body 10 near the width of the sub-antenna 101 of first end of described antenna body 10 Sub-antenna 101 width；

The end of every section of described sub-antenna 101 first end away from described antenna body 10 is respectively connected with connection resistance 102；

Adjacent described sub-antenna 101 is all connected by described connection resistance 102；

Often in adjacent two described connection resistance 102, near the connection resistance 102 of the first end of described antenna body 10 Resistance be more than near described antenna body 10 the second end connection resistance 102 resistance.

When implementing, in hj/t 10.2-1996 " radiation environment conservative management directive/guide electromagnetic radiation monitoring instrument Device and method " in, the operation principle popped one's head in is had described below:

Dipole antenna equivalent capacity c_a, inductance l_a, tried to achieve according to biconical antenna theory:

$c_a=\frac{\mathrm{\π}\·{\mathrm{\ϵ}}_0\·l}{\ln \frac{l}{a}+\frac{s}{2l}-1}$

$l_a=\frac{{\mathrm{\μ}}_0\·l}{3\mathrm{\π}}(ln\frac{2l}{a}-\frac{11}{b})$

In formula: a dipole antenna radius；S dipole antenna sectional area；L dipole antenna actual (tube) length Degree.

Because dipole antenna impedance is in capacitive, output voltage is the function of frequency:

$v=\frac{l}{2}.\frac{\mathrm{\ω}\·c_a\·r_l}{\sqrt{1+{\mathrm{\ω}}^2{(c_a+c_l)}^2{r}_l^2}}$

In formula: ω angular frequency, ω=2 π f, f frequency；

c_lDipole antenna gap electric capacity and load capacitance；r_lLoad resistance.

By formula

$v=\frac{l}{2}.\frac{\mathrm{\ω}\·c_a\·r_l}{\sqrt{1+{\mathrm{\ω}}^2{(c_a+c_l)}^2{r}_l^2}}$

As can be seen that when ω is larger, due toTherefore:

$v\≈\frac{l}{2}\·\frac{\mathrm{\ω}\·c_a\·r_l}{\mathrm{\ω}\·\left|(c_a+c_l)\right|\·r_l}=\frac{l}{2}.\frac{c_a}{c_a+c_l}$

ω=2 π ff is frequency again, that is, represent that, in high band, output voltage is hardly affected by frequency, i.e. frequency Response is preferably.

And in low-frequency range, due to ω less it is impossible to makeC must be improved_a, makeBy c in standard_aFormula be not difficult to find out, c to be improved_aIt is necessary to increase l, i.e. dipole The length of sub-antenna.

In dipole antenna provided by the utility model, antenna body is divided into multistage sub-antenna, and each cross-talk The width of antenna is gradually lowered to the other end by one end of antenna body, meanwhile, will pass through between adjacent sub-antenna to connect electricity Resistance couples together, and connects the resistance of resistance and be gradually reduced to the other end by one end of antenna body so that dipole antenna energy Enough electromagnetic field signals preferably receiving different frequency, increased the equivalent length of dipole antenna, expand the measurement frequency of probe Rate scope, particularly improves the Frequency Response of low-frequency range, realizes broadband electromagnetic field signal is preferably received.

Another embodiment of this utility model also provides a kind of omni-directional probe.

Include referring to the omni-directional probe that shown in Fig. 2, Fig. 3, Fig. 4 and Fig. 5, this utility model embodiment is provided: three Block circuit board 20；

Three pieces of described circuit boards 20 connect two-by-two, form an equilateral triangular prism, and three pieces of described circuit boards 20 are respectively Three sides of described equilateral triangular prism；

It is provided with, on every piece of described circuit board 20, the dipole antenna 30 being provided as this utility model embodiment；

Angle between the incline of described antenna body 10 and described equilateral triangular prism is 54.7 °.

When implementing, shown in Figure 4 it is assumed that aa ' b ' b (" " represents tetragon), bb ' c ' c, The circuit board of cc ' a ' a is provided with dipole antenna a ' b, b for three pieces ' c, c ' a, its end face △ abc (" △ " represents triangle) and △ a ' b ' c ' is equilateral triangle, and three pieces of circuit boards define an equilateral triangular prism, and bb ', cc ', aa ' are respectively equilateral Rhizoma Sparganii Three inclines of post；Dipole antenna a ' b, b ' angle (θ) of ' a and three incline of c, c is 54.7 °.Take the midpoint on b ' c ' side O, connects a ' o, ob, because above-mentioned △ a ' b ' c ' is equilateral triangle, a ' o ⊥ b ' c ', and △ a ' b ' c ' ⊥ bb ' c ' c, therefore a ' O ⊥ bb ' c ' c, so a ' o ⊥ b ' c.Shown in Figure 5, in bb ' c ' c, b ' c ' ∥ bc and ⊥ bb '.Due to θ=54.7 °,IfObtain bb '=a, andObtained according to Pythagorean theoremDue to b ' c ' ∥ bc, therefore $b^{,}d=dc/2=b^{,}c/3=\sqrt{3}a/3,db=2od=2ob/3=\sqrt{2}a/\sqrt{3},$ Can be calculated bd²+db’²=bb '², meet Pythagorean theorem, therefore ob ⊥ b ' c, so b ' c ⊥ △ a ' ob, i.e. a ' b ⊥ b ' c.In the same manner ' c, c ' a is orthogonal to can get a ' b, b.Make x-axis along a ' b direction, along b ' c direction, z-axis is along c ' a direction for y-axis, you can to meet High resistant line is in 54.7 ° with x, y, z three axle, and x, y, z three axle is mutually perpendicular to.And then disclosure satisfy that in ieee-1309 standard, radio frequency The support bar of emf probe be high resistant line part need become 54.7 ° with x, y, z three axle, and x, y, z three axle orthogonal want Ask.

Omni-directional probe described in this utility model embodiment, by the setting side of three pieces of circuit boards and dipole antenna Formula, meets ieee-1309 standard, the support bar of radio-frequency electromagnetic Field probe, and that is, high resistant line part needs all to become with x, y, z three axle Orthogonal requirement before 54.7 °, and x, y, z three axle.Simultaneously as employing the idol that this utility model embodiment is provided Pole sub-antenna.In this dipole antenna, antenna body is divided into multistage sub-antenna, and the width of each cross-talk antenna is by antenna master One end of body is gradually lowered to the other end, meanwhile, will be coupled together by connecting resistance, and connect electricity between adjacent sub-antenna The resistance of resistance is gradually reduced to the other end by one end of antenna body so that dipole antenna can preferably receive different frequency Electromagnetic field signal, increased the equivalent length of dipole antenna, expand the measurement frequency scope of probe, particularly improve low frequency The Frequency Response of section, realizes broadband electromagnetic field signal is preferably received.

In addition, referring to shown in Fig. 2 and Fig. 3, in the omni-directional probe that this utility model embodiment is provided, described in each Dipole antenna 30 on circuit board 20 all has two；

The axis of two described dipole antennas 30 is on same straight line；

On two described dipole antennas 30, the first end of antenna body 10 is close to each other, and near described antenna body Connected by Schottky detector diode 40 between the described sub-antenna 101 of 10 first end.

When implementing, omni-directional probe is typically used on electromagnet radiation detection instrument, electromagnet radiation detection instrument Detect the electromagnetic signal of spatial environmentss using antenna, signal is put after detector, then by operational amplifier Greatly, the signal after amplification is converted to digital signal through analog-digital converter (a/d) by analogue signal, and this digital signal is entered Obtain electromagnetic field intensity values after row data processing, finally shown in the form of digital quantity.And Schottky detector diode is just It is the cymoscope in this whole process.The omni-directional probe that this utility model embodiment is provided is it is simply that utilize dipole sky The electromagnetic signal of line inductive spacing environment, then detection is carried out to signal by Schottky detector diode, dipole antenna is surveyed The electromagnetic signal obtaining is converted into voltage.On two dipole antennas, wider sub-antenna 101 (is located at antenna body first Sub-antenna on end) and two terminals of Schottky detector diode connect.

In addition, it is preferable that described antenna body 10 is arranged in the omni-directional probe that this utility model embodiment is provided In described circuit board 20 near the side of other described circuit boards 20；

Described connection resistance 102 and described Schottky detector diode 40 are arranged on described circuit board 20 away from others The side of described circuit board 20.

Usually, connection resistance 102 and Schottky detector diode 40 are arranged on the side of circuit board 20, by antenna Main body 10 is arranged on the opposite side of circuit board 20, so, with respect to will connect resistance and Schottky detector diode 40 is arranged With antenna body 10 identical side, can save space, reduce omni-directional probe size.

In popping one's head in referring to the omni-directional that shown in Fig. 2 and Fig. 3, this utility model embodiment is provided, two described dipoles On antenna 30, two binding posts near described Schottky detector diode 40 connect a high resistant electricity respectively by electric capacity 50 Resistance row 60.

When implementing, Schottky detector diode 40 has detection characteristic, cooperation electric capacity 50 and connection resistance 102, (radio frequency) AC signal that antenna body is sensed can be converted to direct current signal, i.e. detection.Dipole antenna (my god Line main body) radiofrequency signal that receives, produce faradic current, it is electric that faradic current is converted into exchange (radio frequency) after passing through to connect resistance Pressure, obtains the detecting circuit of direct current after Schottky detector diode and electric capacity.

In addition, arrange the signal on 60 in order to avoid two two high-ohmic resistors interfering each other, and described in two The high-ohmic resistor row 60 that dipole antenna 30 connects respectively is located at the both sides of described circuit board 20 respectively, and two described high resistant electricity Resistance row be symmetrical arranged along described circuit board.

In addition, the axis of described high-ohmic resistor row 60 is vertical with the axis of described dipole antenna 30.High-ohmic resistor row 60 Perpendicular to dipole antenna 30 so that dipole antenna 30 preferably receipt signal, reduce because of the presence of high-ohmic resistor row 60 The interference of electrode couple sub-antenna 30.

Referring to shown in Fig. 2 and 3, in the omni-directional probe that this utility model embodiment is provided, described high-ohmic resistor row One end away from described electric capacity is also associated with high resistant line 70.

Preferably, described high resistant line 70 is attached on flexible PCB.Flexible PCB is to possess necessarily elastic shape actually The circuit board of change ability, after being that high-ohmic resistor row 60 connects, is bent into a radian, along the extension side of triangular prism To after extend, it is connected with the operational amplifier of electromagnet radiation detection instrument.And high-ohmic resistor row 60 actually should be with high resistant line 70 shape Become entirety, high-ohmic resistor row 60 is a part for high resistant line 70 actually in other words, using high-ohmic resistor row 60 and flexibility The scheme that high resistant line 70 combines, rather than all with flexible high resistant line, so that high-ohmic resistor row 60 is so near even Perpendicular to antenna at pole sub-antenna 30, reduce and antenna is affected, after pulling open certain distance, then connect flexible high resistant line, While convenient installation, expand the bandwidth of operation of probe, lift low frequency characteristic.And, high resistant line is attached to flexible PCB, makes Obtain resistance to be uniformly distributed, the traditional scheme realizing high resistant line with resistor chain of ratio, advantageously in the Frequency Response widening probe.

Shown in Figure 6, the omni-directional probe that this utility model embodiment is provided, also include: base 80；

Described base 80 is provided with draw-in groove 90；Described circuit board 30 is installed in described draw-in groove 90.Thus realizing circuit board 30 fixation.

The beneficial effects of the utility model:

1) meet ieee-1309 standard, support bar is that high resistant line part needs to be in 54.7 ° with x, y, z three axle, and x, y, z Three axles are mutually perpendicular to.

2) probe realized is convenient to be installed it is ensured that angle.

3) dipole antenna segmentation is welded on the circuit board of rectangle, and the width of sub-antenna gradually becomes to both sides from center Carefully, expand the measurement frequency scope of probe, particularly improve the Frequency Response of low-frequency range, realize to broadband electromagnetic field signal more Good reception.

4) connected with connecting resistance between sub-antenna, resistance is gradually reduced to both sides from center, makes dipole antenna more preferable Ground receives the electromagnetic field signal of different frequency, expands the measurement frequency scope of probe.

5) high resistant line be flexible PCB so that resistance is uniformly distributed, than traditional side realizing high resistant line with resistor chain Case, advantageously in the Frequency Response widening probe.

6) dipole antenna is connected by high-ohmic resistor row with high resistant line, and high-ohmic resistor is arranged perpendicular to dipole antenna, makes Obtain dipole antenna preferably receipt signal, reduce the interference of electrode couple sub-antenna because of the presence of resistor chain.

7) high-ohmic resistor row is a part for high resistant line, the scheme closed using resistor chain and flexible high-resistance knot, rather than All use flexible high-resistance line, so perpendicular to antenna, reduce and antenna is affected, pulling open a spacing at dipole antenna From rear, then connect flexible PCB high resistant line, while convenient installation, expand the bandwidth of operation of probe, lift low frequency characteristic.

The above, specific embodiment only of the present utility model, but protection domain of the present utility model does not limit to In this, any those familiar with the art, in the technical scope that this utility model discloses, can readily occur in change Or replace, all should cover within protection domain of the present utility model.Therefore, protection domain of the present utility model should described to weigh The protection domain that profit requires is defined.

Claims (10)

1. a kind of dipole antenna is it is characterised in that include: antenna body；

Described antenna body includes multistage sub-antenna；

In two all on same straight line and often adjacent described sub-antennas of the axis of sub-antenna described in multistage, near described The width of the sub-antenna of the first end of antenna body is more than the width of the sub-antenna at the second end near described antenna body；

The end of every section of described sub-antenna first end away from described antenna body is respectively connected with connection resistance；

Adjacent described sub-antenna is all connected by described connection resistance；

Often in adjacent two described connection resistance, it is more than near the resistance of the connection resistance of the first end of described antenna body and leans on The resistance of the connection resistance at the second end of closely described antenna body.

2. a kind of omni-directional probe is it is characterised in that include: three pieces of circuit boards；

Three pieces of described circuit boards connect two-by-two, form an equilateral triangular prism, and three pieces of described circuit boards are respectively described equilateral Three sides of triangular prism；

It is provided with dipole antenna as claimed in claim 1 on every piece of described circuit board；

Angle between the incline of the axis of described antenna body and described equilateral triangular prism is 54.7 °.

3. omni-directional according to claim 2 is popped one's head in it is characterised in that the dipole antenna on each described circuit board is equal There are two；

The axis of two described dipole antennas is on same straight line；

On two described dipole antennas, the first end of antenna body is close to each other, and the first end near described antenna body Described sub-antenna between connected by Schottky detector diode.

4. omni-directional according to claim 3 probe is it is characterised in that described antenna body is arranged on described circuit board leans on The side of closely other described circuit boards；

Described connection resistance and described Schottky detector diode are arranged on described circuit board away from other described circuit boards Side.

5. omni-directional according to claim 4 probe is it is characterised in that on two described dipole antennas, near described Two binding posts of Schottky detector diode connect a high-ohmic resistor row respectively by electric capacity.

6. omni-directional according to claim 5 probe is it is characterised in that be connected respectively with two described dipole antennas High-ohmic resistor row is located at the both sides of described circuit board respectively, and two described high-ohmic resistor rows are symmetrical arranged along described circuit board.

7. omni-directional according to claim 6 probe is it is characterised in that the axis of described high-ohmic resistor row and described dipole The axis of sub-antenna is vertical.

8. omni-directional probe according to claim 7 is it is characterised in that described high-ohmic resistor is arranged away from the one of described electric capacity End is also associated with high resistant line.

9. omni-directional according to claim 8 is popped one's head in it is characterised in that described high resistant line is attached on flexible PCB.

10. the omni-directional according to claim 2-9 any one is popped one's head in it is characterised in that also including base；

Described base is provided with draw-in groove；Described circuit board is installed in described draw-in groove.