CN106299713A - For producing HW SIW ring resonator structure antenna and the multiplexer of radio frequency OAM wave beam - Google Patents

Abstract

The invention belongs to radio frequency OAM wireless communication technology field, the concrete HW SIW ring resonator structure antenna provided for producing radio frequency OAM wave beam, in order to overcome, existing antenna structure is complicated, feed system is complicated, the most easy of integration, high in cost of production defect.The present invention includes medium substrate, is arranged at the earth plate under medium substrate, the HM SIW ring resonator being arranged on medium substrate, and described HW SIW ring resonator along the circumferential direction has two rectangular channels；Described HW SIW ring resonator uses coaxial probe to feed.The present invention is greatly reduced the size of antenna, makes the more compact structure of antenna, simpler, and feed system is simplified, coaxial single feedback can produce radio frequency OAM wave beam, the design making antenna system becomes simpler, so that above-mentioned antenna is easily integrated, and power consumption and cost are all substantially reduced.Meanwhile, the present invention also provides for radio frequency OAM wave beam multiplexer based on above-mentioned antenna.

Description

For producing the HW-SIW ring resonator structure antenna of radio frequency OAM wave beam and answering Use device

Technical field

The invention belongs to radio frequency OAM wireless communication technology field, be specifically related to based on half module substrate integrated wave guide (HW- SIW) antenna and the multiplexer for producing radio frequency OAM wave beam of ring resonator.

Background technology

Along with the fast development of mobile Internet and a large amount of of intelligent terminal popularize, mobile Internet is promoted to present quick-fried Fried formula development trend, but, the frequency spectrum resource making wireless communication system distribute is become the most crowded by this, and power system capacity becomes day Benefit is deficient.At present, the capacity of mobile communication system is already close to shannon limit, in order to the power system capacity solving to become increasingly conspicuous is deficient Weary and frequency spectrum resource shortage problem, meets the quick increase of mobile data services on the horizon.At present, time division multiplex, frequently Point multiplexing, the multiplex technique such as code division multiplexing is ripe to be used in wireless communication system；The amplitude of electromagnetic wave, phase place, frequency, The dimensions such as polarization have been utilized in the middle of wireless communication system the most significantly.Therefore, in traditional radio communication reason Capacity and the spread-spectrum resource of the basic raising system of opinion and system are more and more tired, so that more new technique comes Solve these problems.The orbital angular momentum (OAM) of electromagnetic wave is as a kind of new technique, for solving the problems referred to above side of providing Method.

At present, the method producing orbital angular momentum mainly has projection helical structure, projection optical grating construction, spiral reflecting surface knot Structure, antenna array structure；But by the analysis of each structure it has been observed that

1. projection helical structure can only be for certain frequency, and the vortex electromagnetic wave produced also can only concentrate on medium In the region of size of substrate, and the region outside medium substrate is still that plane wave；

2. projection optical grating construction produces orbital angular momentum, and its process making holographic grating is complicated, and manufacturing process technology is wanted Ask content high, make cost be greatly increased；

3. spiral reflecting surface simple in construction is easily achieved, but can only make phase shift, and one for specific frequency The geometry determined can only produce the OAM ripple of a kind of pattern, if different OAM wave beams need to be generated, then must adjust spiral reverse Penetrating the size in face, this can bring inconvenience in actual applications；

4. although phased-array antenna can realize the multiplexing of radio frequency OAM, but to the phase controlling requirement between each array element Strictly, and simultaneously need to feed multistage mouth, this will increase the complexity of phased array antenna.

Said structure is all the antenna assembly producing radio frequency OAM wave beam, or structure is complicated, or process technology requirement Height, or feed system complexity etc., cost all will be caused to increase, the most easy of integration, it is unfavorable for accelerating and promoting future radio frequency OAM Wave beam is in the high speed development of wireless communication field and application.Therefore, a kind of antenna structure is simple, and feed structure is simple and Yi Yuxian There is the orbital angular momentum antenna that communication system is integrated, for improving the channel capacity of wireless communication system, accelerate radio frequency OAM in nothing The application in the field of line communication system, it appears particularly important.

Summary of the invention

Present invention aims to problem and deficiency, the feed system of antenna and antenna structure that prior art exists Complicated, the most easy of integration etc., it is provided that for producing the HW-SIW ring resonator structure antenna of radio frequency OAM wave beam, and based on this The radio frequency OAM wave beam multiplexer of antenna.

For achieving the above object, the technical solution used in the present invention is:

For producing the HW-SIW ring resonator structure antenna of radio frequency OAM wave beam, it is characterised in that: include medium base Plate, is arranged at the earth plate under medium substrate, the HM-SIW ring resonator being arranged on medium substrate, described HW-SIW annular Two rectangular channels are along the circumferential direction had on resonator cavity；Described HW-SIW ring resonator uses coaxial probe to present Electricity.

Further, two rectangular reservoir shape on described HW-SIW ring resonator, size are the most identical, and about The center of circle of HW-SIW ring resonator is symmetrical；The size of rectangular channel determines according to radio frequency OAM pattern.

Further, described coaxial probe is single feedback, and feed placement determines according to radio frequency OAM pattern.

Present invention also offers a kind of radio frequency OAM wave beam multiplexer based on above-mentioned antenna, described radio frequency OAM wave beam multiplexing Device includes multiple HW-SIW ring resonator structure antenna being operated in different working modes, the plurality of HW-SIW annular resonance Cavity configuration antenna is arranged on medium substrate jointly with the form of concentric HW-SIW annulus.

The invention have the benefit that

The present invention is directed to radio frequency OAM wave beam when carrying out wireless system communication, it is possible to be not take up extra frequency spectrum resource Under premise, it is proposed that the antenna that radio frequency OAM wave beam can be produced of a kind of simple possible, and provide one on this basis Radio frequency OAM multiplexer.The present invention is based on HM-SIW ring resonator, and opens rectangular channel on HM-SIW ring resonator, it is achieved Coaxial single feedback can produce radio frequency OAM wave beam；For accelerating the practical of radio frequency OAM multiplex communication system, there is important function.With Prior art is compared, and the present invention is greatly reduced the size of antenna, makes the more compact structure of antenna, simpler, and feed system System is simplified, and coaxial single feedback can produce radio frequency OAM wave beam, makes the design of antenna system become simpler, so that above-mentioned Antenna is easily integrated, and power consumption and cost are all substantially reduced.Meanwhile, the present invention is by multiple HW-SIW ring resonator structure Antenna is arranged on medium substrate jointly with the form of concentric HW-SIW annulus, i.e. available a kind of radio frequency OAM wave beam multiplexer, Thus realize the multiplexing of radio frequency OAM wave beam.

Accompanying drawing explanation

Fig. 1 be the present invention for producing the structural representation of the HW-SIW ring resonator structure antenna of radio frequency OAM wave beam, Wherein, (a) is top view, (b) sectional view；

Fig. 2 provides the HW-SIW ring resonator structure antenna electric field in space radiation of mode of operation l=1 for the present invention Test result figure, wherein, (a) is electric-field intensity distribution figure, and (b) is electric field phase scattergram；

Fig. 3 provides the HW-SIW ring resonator structure antenna electric field in space radiation of mode of operation l=5 for the present invention Test result figure, wherein, (a) is electric-field intensity distribution figure, and (b) is electric field phase scattergram；

The structural representation of the radio frequency OAM wave beam multiplexer that Fig. 4 provides for the present invention；

Wherein: 1 be HM-SIW ring resonator, 2 be medium substrate, 3 for earth plate, q₁And q₂For rectangular channel, p₁For coaxially Feed port.

Detailed description of the invention

The present invention is further illustrated below in conjunction with the accompanying drawings, but the invention is not limited in detailed description of the invention.

The present invention is provided to produce the HW-SIW ring resonator structure antenna of radio frequency OAM wave beam, its structure such as Fig. 1 institute Show, including medium substrate 2, the HM-SIW ring resonator 1 being arranged on medium substrate, be arranged at the earth plate under medium substrate 3, described HW-SIW ring resonator along the circumferential direction has two rectangular channel q₁And q₂；Described HW-SIW annular resonance Chamber uses coaxial probe p₁Feed；Two rectangular channel q on described HW-SIW ring resonator₁And q₂Shape, size phase With, and the center of circle about HW-SIW ring resonator is symmetrical；Rectangular channel size is true according to different radio frequency OAM mode adjustment Fixed；Described coaxial probe is single feedback, and feed placement determines depending on different radio frequency OAM mode adjustment.

As shown in Figure 4, for radio frequency OAM wave beam multiplexer based on above-mentioned HW-SIW ring resonator structure antenna, including Multiple HW-SIW ring resonator structure antennas being operated in different working modes, the plurality of HW-SIW ring resonator structure Antenna is arranged on medium substrate jointly with the form of concentric HW-SIW annulus, described each HW-SIW ring resonator structure sky Line is the most only provided with a coaxial feed port.

Embodiment 1

Step one: design work pattern l=1, the HM-SIW ring resonator of operating frequency f=5.8GHz, use Rogers 5880, DIELECTRIC CONSTANT ε_r=2.2, thickness h=0.787mm, the length and width of medium substrate is all L₀=35mm, HM-SIW ring shape resonator metal column along inside radius direction at interval ofIt is uniformly distributed, metal column radius r_via= 0.4mm, takes internal ring radius and the HM-SIW metal column i.e. R of Edge Distance 1mm_via=R_in-1mm, HM-SIW outer shroud radius can basis Formula (1-1) and (1-2) obtain:

$f_{nm}=\frac{{\mathrm{\α}}_{nm}.c}{2{\mathrm{\πa}}_{eff}\sqrt{{\mathrm{\ϵ}}_r}}---(1-1)$

$a_{eff}=a{\[1+\frac{2h}{{\mathrm{\πa\ϵ}}_r}(ln\frac{\mathrm{\π}a}{2h}+1.7726)\]}^{1/2}a/h>>1---(1-2)$

Wherein, α_nmIt is the m-th zero point value of n rank Bessel function, a_effFor HM-SIW effective radius, h is medium substrate Thickness, a is HM-SIW real radius, and c is the light velocity in vacuum, ε_rRelative dielectric constant for medium.

Coaxial feed end 50 Ω impedance matching can obtain according to formula (1-3):

$Z_{in}=\frac{60}{\sqrt{{\mathrm{\ϵ}}_r}}ln\left(\frac{b}{a}\right)---(1-3)$

Wherein, Z_inFor input impedance, a is coaxial inside radius, and b is coaxial outer radius.

Being about 12mm by calculating HM-SIW outer shroud radius above, coaxial feed takes a=0.5mm, b=1.7mm and carries out 50 Ω impedance matchings, and coaxial feed point distance center of circle distance R_feed=7.7mm, with the angle in x-axis directionTake On HM-SIW ring resonator, the length and width of rectangular channel are all 1mm.

Step 2: as it is shown in figure 1, use HFSS software that the antenna designed is modeled and optimization Simulation, obtain HM- SIW annular chamber outer radius R_out=12.7mm, inside radius R_in=3.7mm, rectangular channel is along the tangential long l of radius₁=1mm, along radius side To wide w₁=3mm.And obtain the HM-SIW annular chamber resonant antenna electric-field intensity distribution figure in space radiation, such as Fig. 2 (a), Electric field phase scattergram, such as Fig. 2 (b), is presented vortex by electric field phase around the change of the angle of circumference of direction of propagation axle (z-axis) special Property, and the electric field phase circumferentially satisfied 2 π l=2 π of circle change, meet the spiral wave beam that mode of operation is 1.

Embodiment 2

Step one: design work pattern l=5, the HM-SIW ring resonator of operating frequency f=5.8GHz, use Rogers 5880, DIELECTRIC CONSTANT ε_r=2.2, thickness h=0.787mm, HM-SIW ring shape resonator metal column is along inside radius side To at interval ofIt is uniformly distributed, metal column radius r_via=0.4mm, takes internal ring radius and HM-SIW metal column Edge Distance 1mm i.e. R_via=R_in-1mm, HM-SIW outer shroud radius can obtain according to formula (1-1) and (1-2):

$f_{nm}=\frac{{\mathrm{\α}}_{nm}.c}{2{\mathrm{\πa}}_{eff}\sqrt{{\mathrm{\ϵ}}_r}}---(1-1)$

$a_{eff}=a{\[1+\frac{2h}{{\mathrm{\πa\ϵ}}_r}(ln\frac{\mathrm{\π}a}{2h}+1.7726)\]}^{1/2}a/h>>1---(1-2)$

Wherein, α_nmIt is the m-th zero point value of n rank Bessel function, a_effFor HM-SIW effective radius, h is medium substrate Thickness, a is HM-SIW real radius, and c is the light velocity in vacuum, ε_rRelative dielectric constant for medium.

Coaxial feed end 50 Ω impedance matching can obtain according to formula (1-3):

$Z_{in}=\frac{60}{\sqrt{{\mathrm{\ϵ}}_r}}ln\left(\frac{b}{a}\right)---(1-3)$

Wherein, Z_inFor input impedance, a is coaxial inside radius, and b is coaxial outer radius.

Being about 36mm by calculating HM-SIW outer shroud radius above, coaxial feed takes a=0.5mm, b=1.7mm and carries out 50 Ω impedance matchings, and coaxial feed point distance center of circle distance R_feed=25.5mm, with the angle in x-axis directionTake On HM-SIW ring resonator, the length and width of rectangular channel are all 1mm.

Step 2: use HFSS software that the antenna designed is modeled and optimization Simulation, obtain HM-SIW annular chamber Outer radius R_out=36.3mm, inside radius R_in=16.7mm, rectangular channel is along the tangential long l of radius₁=2.3mm, along radial direction width w₁ =2.1mm.And obtain the HM-SIW annular chamber resonant antenna electric-field intensity distribution figure in space radiation, such as Fig. 3 (a), electric field PHASE DISTRIBUTION figure, such as Fig. 3 (b), is presented vortex characteristic by electric field phase around the change of the angle of circumference of direction of propagation axle (z-axis), And an electric field phase circumferentially circle change meets 2 π l=10 π, meet the spiral wave beam that mode of operation is 5.

As shown in Figure 4, further, based on the HM-SIW ring resonator antenna of design in embodiment 1 and embodiment 2, It is calculated mode of operation l=1, when 5, the physical dimension of corresponding HM-SIW ring resonator antenna；By above-mentioned different operating mould The HM-SIW ring resonator antenna of formula is arranged on one piece of medium substrate the most jointly, described each HM-SIW Ring resonator antenna the most only arranges a coaxial feed excitation, thus obtains radio frequency OAM wave beam multiplexer.

Above in conjunction with accompanying drawing, the embodiment of the present invention is had been described in detail, but the invention is not limited in above-mentioned concrete reality Execute mode.Those of ordinary skill in the art is under the enlightenment of the present invention, the guarantor without departing from present inventive concept and claim Protect under scope, it is also possible to design and be operated in other frequencies and other mode of operations, radio frequency OAM spiral wave beam can be produced HM-SIW ring resonator antenna.Any feature disclosed in this specification, unless specifically stated otherwise, all can by other equivalence or The alternative features with similar purpose is replaced；Disclosed all features or all methods or during step, remove Beyond mutually exclusive feature and/or step, all can be combined in any way.

Claims (4)

1. for producing the HW-SIW ring resonator structure antenna of radio frequency OAM wave beam, it is characterised in that: include medium substrate, The HM-SIW ring resonator be arranged at the earth plate under medium substrate, being arranged on medium substrate；Described HW-SIW annular is humorous Shaking and along the circumferential direction have two rectangular channels on chamber, described HW-SIW ring resonator uses coaxial probe to feed.

2., for producing the HW-SIW ring resonator structure antenna of radio frequency OAM wave beam as described in claim 1, its feature exists In, two rectangular reservoir shape on described HW-SIW ring resonator, size are the most identical, and about HW-SIW ring resonator The center of circle symmetrical；The size of rectangular channel determines according to radio frequency OAM pattern.

3., for producing the HW-SIW ring resonator structure antenna of radio frequency OAM wave beam as described in claim 1, its feature exists In, described coaxial probe is single feedback, and feed placement determines according to radio frequency OAM pattern.

4. a radio frequency OAM wave beam multiplexer based on HW-SIW ring resonator structure antenna, described radio frequency OAM wave beam multiplexing Device includes multiple HW-SIW ring resonator structure antenna being operated in different working modes, the plurality of HW-SIW annular resonance Cavity configuration antenna is arranged on medium substrate jointly with the form of concentric HW-SIW annulus.