CN101916914A - Bragg slot array antenna based on half-module substrate integrated waveguide - Google Patents
Bragg slot array antenna based on half-module substrate integrated waveguide Download PDFInfo
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- CN101916914A CN101916914A CN2010102523778A CN201010252377A CN101916914A CN 101916914 A CN101916914 A CN 101916914A CN 2010102523778 A CN2010102523778 A CN 2010102523778A CN 201010252377 A CN201010252377 A CN 201010252377A CN 101916914 A CN101916914 A CN 101916914A
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Abstract
The invention discloses a Bragg slot array antenna based on a half-module substrate integrated waveguide, which can realize the small size, low outline, light weight and easy generality in the structure and high grain, high radiation efficiency and capability of effectively inhibiting the grating lobe in the performance. The antenna comprises an upper-surface metal layer (1) with a periodic transverse slot (11), an intermediate finger layer (2) with metallic through holes (21) and a bottom-surface metal layer (3), wherein the periodic transverse slot (11) on the upper-surface metal layer (1) is arranged vertical to the length direction of the array antenna; a trapezoid micro-strip impedance converter (12) is arranged at one end of the upper-surface metal layer (1), that is to say, the initial end of the half-module substrate integrated waveguide; a uniform 50omega micro-strip feeder line (13) is arranged at the outer end of the trapezoid micro-strip impedance converter (12); the metallic through holes (21) are arranged along the length direction of the array antenna; one end without the trapezoid micro-strip impedance converter (12) is the terminal of the half-module substrate integrated waveguide; and the right angles of the metallic through holes are rotatably arrayed to the edge of the upper-surface metal layer (1), that is to say, the terminal is short-circuited by a row of metallic through holes.
Description
Technical field
The Bragg of half-mould substrate integrated waveguide feed (Prague) slot array antenna is a kind of harmonic oscillation type gap array antenna, is applicable to microwave and millimeter wave antenna-feedback system point-to-point, telecommunication.
Background technology
Advantages such as the harmonic oscillation type gap array antenna has the radiation efficiency height, and gain is high, and beam position is fixing, thereby be usually used in making up antenna-feedback system remote, point-to-point communication.From structure, this type of antenna normally by on (three-dimensional or plane) waveguide metal wall of terminal short circuit regularly etching elongated gap cutting surface current constitute.According to the requirement to polarization, the slit trend can be along waveguide bearing of trend (promptly vertical), along waveguide cross-section direction (promptly horizontal) or 45 ° of directions.Wherein, the transverse slot is mainly used in the situation that requires the electric field polarization direction consistent with the antenna bearing of trend, and for example antenna requirement level is put and electric field requirement horizontal polarization.The electric field polarization direction decides according to antenna use usually, and the antenna placing direction then is subject to the shape and size of mounting platform usually.
Radiating element is that the difficult problem that the slot array antenna of transverse slot faces is how to suppress graing lobe.Slot array antenna with the rectangular waveguide feed of fills with air is an example, in order to realize each unit cophase detector, adjacent transverse slit spacing is taken as a guide wavelength corresponding to centre frequency, and this wavelength is greater than the vacuum wavelength of correspondence, therefore, this array antenna produces graing lobe possibly in working frequency range.The method of elimination graing lobe commonly used has two kinds: the one, and to air waveguide filled media, the 2nd, radiating element is used the parallel double slit that abuts against together instead.Slot array antenna based on the planar substrates integrated waveguide feed promptly is the successful example of first method.This antenna has not only been eliminated graing lobe, has reduced the profile and the weight of antenna simultaneously effectively, makes it easy to integrated and general character.Simultaneously, because the substrate integration wave-guide transmission characteristic is similar to unidimensional medium and fills rectangular waveguide, therefore the method for designing of rectangular waveguide slot array antenna can be conveniently used in designing chip integrated waveguide slot array antenna, the antenna material object can utilize ripe PCB production and processing and get in addition, so the design of this novel planar array antenna and processing cost all greatly reduce.But in some occasion, it is excessive that the chip integrated waveguide slot array antenna lateral dimension still shows, and is not easy to be installed on the less platform.
Therefore, people are devoted to development structurally always, and size is little, profile is low, in light weight, easy general character, on performance, high-gain, high radiation efficiency, can effectively suppress the resonant mode transverse slot array antenna of graing lobe.
Summary of the invention
Technical problem: purpose of the present invention is structurally a kind of in order to realize; size is little, profile is low, in light weight, easy general character; on performance; high-gain, high radiation efficiency, can effectively suppress the Bragg slot array antenna based on half module substrate integrated wave guide of graing lobe;, this class antenna can be applied at a distance, the antenna-feedback system of point-to-point communication.
Technical scheme: periodically be made of the little spacing of etching transverse slot the metallic upper surface at the half module substrate integrated wave guide of a section termination short circuit based on the Bragg slot array antenna of half module substrate integrated wave guide, wherein the slit spacing is about a guide wavelength of centre frequency correspondence.During design, at first according to the antenna working frequency range, select suitable dielectric substrate material and thickness, half module substrate integrated wave guide width reasonable in design works in the low-loss district of waveguide (being the best effort frequency range) to guarantee antenna.Then, according to the antenna working frequency range, calculate and choose suitable slit spacing and the last transverse slot distance to waveguide terminal short circuit face.Secondly, according to requirement, calculate and choose suitable gap length minor level and gain.At last, the impedance matching network between optimal design antenna and the even half module substrate integrated wave guide has the bandwidth of operation of broad to guarantee antenna, and receives higher input power.
Bragg slot array antenna based on half module substrate integrated wave guide of the present invention comprises having periodically upper surface metal level, the middle dielectric layer with plated-through hole, the bottom surface metal level of transverse slot; Wherein, the length direction of vertical this array antenna in the periodicity transverse slot on the upper surface metal level is arranged; end at the upper surface metal level is that half module substrate integrated wave guide top is provided with trapezoidal micro belt impedance converter; the outer end of trapezoidal micro belt impedance converter is provided with even 50 Ω microstrip feed lines; plated-through hole is arranged along the length direction of this array antenna; at an end that does not have trapezoidal micro belt impedance converter is the half module substrate integrated wave guide terminal; the plated-through hole right-angle steering is arranged the edge of supreme surface metal-layer, and promptly terminal is then with row's plated-through hole short circuit.
Periodically the space D of the slot element of transverse slot is the 1/8-1/2 of the vacuum medium wavelength of lowest operating frequency correspondence, the length l of slot element
1Be the 1/10-4/5 of half module substrate integrated wave guide width w, the width w of slot element
1Be the 1/20-1/15 of the vacuum medium wavelength of lowest operating frequency correspondence, the diameter d of plated-through hole is 1/8-1/10 duct width w, and the distance s of plated-through hole is 3/2 of through-hole diameter d.
Article one transverse slot adjustable length in the described periodicity transverse slot, in order to realize the impedance matching of gap array and waveguide feeder, all the other gap lengths equate; The adjacent slits spacing is a guide wavelength, and the last transverse slot is about guide wavelength half apart from the waveguide short terminal.
Beneficial effect: 1) utilize the half module substrate integrated wave guide technology successfully to design the Bragg slot array antenna first.This invention is introduced some outstanding advantages to antenna in the radiance that has kept common harmonic oscillation type gap array antenna.For example suppress graing lobe effectively, be easier to integratedly, be easy to general character design etc.
2) neoteric another outstanding feature is that array format is the transverse slot (being the Bragg grid) of period profile, and is simple in structure, is convenient to design and processing.
Based on the Bragg slot array antenna of half module substrate integrated wave guide have characteristics mainly contain following some:
1) in the design frequency range, have higher gain, than high radiation efficiency, beam position changes less.
2) effectively suppress graing lobe.
3) simple in structure, simplicity of design.
4) day low, in light weight, easy of integration, the easy general character of line profile.
4) cost is low.Can use ripe PCB processing technology to make.
Description of drawings
Fig. 1 half module substrate integrated wave guide Bragg slot array antenna configuration 3D figure; Fig. 2 is a top view.
Fig. 3 reflection coefficient (test result),
Fig. 4 a, b, c, d are E face and H surface radiation directional diagram (test result),
Fig. 5 gain is with the variation (test result) of frequency.
Have among the figure:
The trapezoidal micro belt impedance converter of the even 50 Ω microstrip feed line 2-of 1-
The equivalent short circuit termination that 3-is made of plated-through hole
The width l of w-half module substrate integrated wave guide
1The length of-slot element
The spacing of the length D-slot element of l-array antenna (being the cycle)
The spacing l of s-plated-through hole
2The length of-article one transverse slot
The diameter l of d-plated-through hole
t-article one transverse slot is to the distance of waveguide mouth
w
1The width l of-slot element
3-the last transverse slot is to the distance of waveguide short face
l
tThe length of-trapezoidal micro belt impedance converter
Embodiment
Bragg slot array antenna based on half module substrate integrated wave guide of the present invention comprises the upper surface metal level 1 with periodicity transverse slot 11, middle ring layer 2, the bottom surface metal level 3 with plated-through hole 21; Wherein, the length direction of periodicity transverse slot 11 vertical these array antennas on the upper surface metal level 1 is arranged; end at upper surface metal level 1 is that half module substrate integrated wave guide top is provided with trapezoidal micro belt impedance converter 12; the outer end of trapezoidal micro belt impedance converter 12 is provided with even 50 Ω microstrip feed lines 13; plated-through hole 21 is arranged along the length direction of this array antenna; at an end that does not have trapezoidal micro belt impedance converter 12 is the half module substrate integrated wave guide terminal; the plated-through hole right-angle steering is arranged the edge of supreme surface metal-layer 1, and promptly terminal is then with row's plated-through hole short circuit.Periodically the space D of the slot element of transverse slot 11 is the 1/8-1/2 of the vacuum medium wavelength of lowest operating frequency correspondence, the length l of slot element
1Be the 1/10-4/5 of half module substrate integrated wave guide width w, the width w of slot element
11/20-1/15 for the vacuum medium wavelength of lowest operating frequency correspondence.
The diameter d of plated-through hole is 1/8-1/10 duct width w, and the distance s of plated-through hole is 3/2 of through-hole diameter d.Article one transverse slot adjustable length in the described periodicity transverse slot 11, in order to realize the impedance matching of gap array and waveguide feeder, all the other gap lengths equate; The adjacent slits spacing is a guide wavelength, and the last transverse slot is about guide wavelength half apart from the waveguide short terminal.
1. this array antenna is a planar structure, is based upon upper and lower surface and applies on the dielectric substrate of copper, as shown in Figure 1.
2. according to the antenna working frequency range, choose suitable dielectric substrate thickness and relative dielectric constant.
3. half module substrate integrated wave guide width w reasonable in design works in the single mode operation frequency range of waveguide to guarantee antenna, simultaneously again away from the cut-off frequency of waveguide.
4. according to requirement,, calculate bore and distribute as minor level, half power lobe width, radiation efficiency etc. to the aerial radiation characteristic.
5. network analysis slit space D draws and describes the variation correlation curve of guide wavelength with space D the influence of guide wavelength.
6. according to operating frequency, utilize and obtain the selected suitable slit of curve space D in the step 5, then according to requirements such as the size of mounting platform, lobe widths, selecting suitable antenna size is number of slots.
7. the length l in optimal design slit
1, distribute with the bore of requirement required in the performing step 4.
8. the size and the position in the trapezoidal micro belt impedance converter of optimal design and article one slit are to realize the matched well of array antenna and microstrip feed line.
9. the antenna pattern of Fig. 4 shows, E face main lobe points to comparatively slow with frequency change, and lobe width is little, and minor level is lower than-18dB.Fig. 5 shows that antenna gain is higher, reaches 17.0dB near the centre frequency, is higher than 14.0dB in bandwidth of operation.
Embodiment:
We have designed a resonance in the half module substrate integrated wave guide Bragg of 32.5GHz slot array antenna.The substrate dielectric material is Rogers5880, and its thickness is 0.254mm, and relative dielectric constant is 2.2, and loss angle tangent is 0.0009.Shown in the antenna structure size table 1.
Table 1 half module substrate integrated wave guide is leaky-wave antenna physical dimension (unit: mm) periodically
| Parameter | w | l | w 1 | l 1 | l 2 |
| Numerical value | 2.50 | 99.75 | 0.30 | 1.50 | 1.24 |
| Parameter | l t | D | s | d | l 3 |
| Numerical value | 1.80 | 5.0 | 0.6 | 0.5 | 2.95 |
What exist in the half module substrate integrated wave guide of terminal short circuit is standing wave.By at the waveguide top surface metal level etching one horizontal narrow slot that row are equidistantly arranged, size equates, cut surface current, realize that microwave energy is to space radiation.Because the effect of substrate medium, guide wavelength is less than the vacuum wavelength on the respective frequencies, the effect of the horizontal narrow slot of periodic distribution (slow wave structure) in addition, and guide wavelength is further compressed, so when transverse slot during with the spacing arrangement of a guide wavelength
The present invention not only can realize each radiating element cophase detector, realizes high-gain, but also can suppress the appearance of graing lobe effectively.The last clearance distance waveguide short face is about guide wavelength half, so that maximum surface current can be cut in each bar slit, realizes high radiation efficiency.Regulate the length in article one slit and apart from the distance of waveguide mouth, and the trapezoidal micro belt impedance converter of optimal design, can realize the impedance matching preferably of array antenna and feeder line, realize high radiation efficiency.
Claims (4)
1. Bragg slot array antenna based on half module substrate integrated wave guide is characterized by: this antenna comprises having periodically upper surface metal level (1), the middle ring layer (2) with plated-through hole (21), the bottom surface metal level (3) of transverse slot (11); Wherein, arrange periodicity transverse slot (11) on the upper surface metal level (1) the vertically length direction of this array antenna; end at upper surface metal level (1) is that half module substrate integrated wave guide top is provided with trapezoidal micro belt impedance converter (12); the outer end of trapezoidal micro belt impedance converter (12) is provided with even 50 Ω microstrip feed lines (13); plated-through hole (21) is arranged along the length direction of this array antenna; at an end that does not have trapezoidal micro belt impedance converter (12) is the half module substrate integrated wave guide terminal; the plated-through hole right-angle steering is arranged the edge of supreme surface metal-layer (1), and promptly terminal is then with row's plated-through hole short circuit.
2. the Bragg slot array antenna based on half module substrate integrated wave guide according to claim 1; it is characterized by: periodically the space D of the slot element of transverse slot (11) is the 1/8-1/2 of the vacuum medium wavelength of lowest operating frequency correspondence, the length l of slot element
1Be the 1/10-4/5 of half module substrate integrated wave guide width w, the width w of slot element
11/20-1/15 for the vacuum medium wavelength of lowest operating frequency correspondence.
3. the Bragg slot array antenna based on half module substrate integrated wave guide according to claim 1 is characterized by: the diameter d of plated-through hole is 1/8-1/10 duct width w, and the distance s of plated-through hole is 3/2 of through-hole diameter d.
4. the Bragg slot array antenna based on half module substrate integrated wave guide according to claim 1, it is characterized in that article one transverse slot adjustable length in the described periodicity transverse slot (11), in order to realize the impedance matching of gap array and waveguide feeder, all the other gap lengths equate; The adjacent slits spacing is a guide wavelength, and the last transverse slot is about guide wavelength half apart from the waveguide short terminal.
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| CN2010102523778A CN101916914A (en) | 2010-08-11 | 2010-08-11 | Bragg slot array antenna based on half-module substrate integrated waveguide |
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| CN2010102523778A CN101916914A (en) | 2010-08-11 | 2010-08-11 | Bragg slot array antenna based on half-module substrate integrated waveguide |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103715504A (en) * | 2012-10-09 | 2014-04-09 | 黑莓有限公司 | Method and apparatus for tunable antenna and ground plane for handset applications |
| CN103840271A (en) * | 2014-02-27 | 2014-06-04 | 南京信息职业技术学院 | Multi-frequency-band cavity-backed half-mode substrate integrated waveguide bent slot antenna |
| CN108199138A (en) * | 2018-04-02 | 2018-06-22 | 信阳师范学院 | Half module substrate integrated wave guide carries on the back chamber from duplexed antenna |
| CN108631054A (en) * | 2018-03-29 | 2018-10-09 | 西安电子工程研究所 | Mix the slot array antenna of feed |
| CN112054305A (en) * | 2020-08-18 | 2020-12-08 | 南昌大学 | Periodic leaky-wave antenna based on composite left-right-hand structure and highly stable gain |
| CN113745838A (en) * | 2021-08-26 | 2021-12-03 | 中山大学 | Leaky-wave antenna with dual-beam radiation |
| CN113991309A (en) * | 2021-11-22 | 2022-01-28 | 四川大学 | Substrate integrated waveguide traveling wave antenna |
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| CN1877903A (en) * | 2006-07-10 | 2006-12-13 | 东南大学 | Hemi-membrane substrate integrated waveguide |
| CN101242029A (en) * | 2008-02-27 | 2008-08-13 | 东南大学 | Base slice integrated wave guide resonance 45 degree line polarization antenna |
| CN201946751U (en) * | 2010-08-11 | 2011-08-24 | 东南大学 | Bragg grating array antenna based on half mode substrate integrated waveguide |
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2010
- 2010-08-11 CN CN2010102523778A patent/CN101916914A/en active Pending
Patent Citations (3)
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| CN1877903A (en) * | 2006-07-10 | 2006-12-13 | 东南大学 | Hemi-membrane substrate integrated waveguide |
| CN101242029A (en) * | 2008-02-27 | 2008-08-13 | 东南大学 | Base slice integrated wave guide resonance 45 degree line polarization antenna |
| CN201946751U (en) * | 2010-08-11 | 2011-08-24 | 东南大学 | Bragg grating array antenna based on half mode substrate integrated waveguide |
Non-Patent Citations (1)
| Title |
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| QING HUA LAI等，: "Half-Mode Substrate Integrated Waveguide Transverse Slot Array Antennas", 《IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION》, vol. 57, no. 4, 8 April 2009 (2009-04-08), XP011255079 * |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103715504A (en) * | 2012-10-09 | 2014-04-09 | 黑莓有限公司 | Method and apparatus for tunable antenna and ground plane for handset applications |
| CN103840271A (en) * | 2014-02-27 | 2014-06-04 | 南京信息职业技术学院 | Multi-frequency-band cavity-backed half-mode substrate integrated waveguide bent slot antenna |
| CN103840271B (en) * | 2014-02-27 | 2015-12-09 | 南京信息职业技术学院 | Multi-frequency-band cavity-backed half-mode substrate integrated waveguide bent slot antenna |
| CN108631054A (en) * | 2018-03-29 | 2018-10-09 | 西安电子工程研究所 | Mix the slot array antenna of feed |
| CN108199138A (en) * | 2018-04-02 | 2018-06-22 | 信阳师范学院 | Half module substrate integrated wave guide carries on the back chamber from duplexed antenna |
| CN112054305A (en) * | 2020-08-18 | 2020-12-08 | 南昌大学 | Periodic leaky-wave antenna based on composite left-right-hand structure and highly stable gain |
| CN112054305B (en) * | 2020-08-18 | 2023-03-14 | 南昌大学 | Periodic leaky-wave antenna based on composite left-right-hand structure and highly stable gain |
| CN113745838A (en) * | 2021-08-26 | 2021-12-03 | 中山大学 | Leaky-wave antenna with dual-beam radiation |
| CN113745838B (en) * | 2021-08-26 | 2022-09-30 | 中山大学 | Leaky-wave antenna with dual-beam radiation |
| CN113991309A (en) * | 2021-11-22 | 2022-01-28 | 四川大学 | Substrate integrated waveguide traveling wave antenna |
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Application publication date: 20101215 |