CN203456593U - Double-frequency-band slot antenna based on half-mode substrate integrated waveguides - Google Patents
Double-frequency-band slot antenna based on half-mode substrate integrated waveguides Download PDFInfo
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- CN203456593U CN203456593U CN201320482362.XU CN201320482362U CN203456593U CN 203456593 U CN203456593 U CN 203456593U CN 201320482362 U CN201320482362 U CN 201320482362U CN 203456593 U CN203456593 U CN 203456593U
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- dielectric substrate
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Abstract
The utility model discloses a double-frequency-band slot antenna based on half-mode substrate integrated waveguides, which comprises a rectangular medium substrate and metal through holes with inner walls provided with conductive metal layers. The upper surface of the medium substrate is provided with an upper surface metal layer and a feed microstrip line. The lower surface of the medium substrate is provided with a lower surface metal layer. Bar-shaped slots are arranged on the lower surface metal layer. The metal through holes are distributed along the edge of the upper surface metal layer and form a half-surrounded structure in an enclosing way. The half-surrounded structure forms a resonant cavity. The feed microstrip line is located on the opening part of the resonant cavity and connected with the upper surface metal layer. The upper surface metal layer and the lower surface metal layer are connected through the conductive metal layers arranged on the inner walls of the metal through holes. The bar-shaped slots are located inside the resonant cavity and respectively have a length direction towards the opening of the resonant cavity. The double-frequency-band slot antenna can simultaneously work in a C frequency band and an X frequency band. Furthermore, the double-frequency-band slot antenna with a simple structure facilitates integration.
Description
Technical field
The utility model relates to a kind of slot antenna, especially a kind of two-band slot antenna based on half-module chip.
Background technology
Along with being widely used of wireless communication system, on market, present the situation of various wireless communication coexistence of systems in recent years, for the electromagnetic coupled that reduces costs, reduces between antenna, disturb, the antenna requirements of compatible multiband is seemed to more urgent.At present, the research of dual-band antenna is a lot, according to investigation, according to antenna type, common dual-band antenna can be divided into following several types: dual-band microstrip antenna, two-band conical-horn antenna, two-band vehicle-mounted whip-shaped antenna, two-band planar inverted F type (PIFA) antenna, two-band printed monopole antenna, two-band cylinder aerial, two-band parabolic antenna etc., the two-band of their work can be divided into following several types substantially: VHF/UHF two-band, the 2.4GHz/5.2GHz two-band of WLAN, two radio-frequency (RF) identification of 2.45GHz and 5.80GHz (RFID) frequency range, L/S two-band, 2.4～2.484GHz WLAN and 3.4～3.69GHz WiMAX two-band, C/Ku two-band, GSM900MHz/DCS1800MHz mobile communication two-band, C/L two-band for satellite ground tracking telemetry and command station, follow the tracks of the Ku/S two-band of manned spaceship, be used for S/X two-band of Tracking Through Telemetry etc., to meet various communication needs.Wherein, be operated in the shortcoming that dual-band antenna existence is difficult for and planar circuit is integrated, size is large of similar C/X two-band.
Summary of the invention
The utility model to solve be technical problem be to provide a kind of easily and the two-band slot antenna that planar circuit is integrated and size is less.
In order to address the above problem, the utility model proposes a kind of two-band slot antenna based on half module substrate integrated wave guide, comprise the dielectric substrate of rectangle and the metal throuth hole that inwall is provided with conductive metal layer, the upper surface of dielectric substrate is provided with upper surface metal level and feed microstrip line, the lower surface of dielectric substrate is provided with lower surface metal layer, lower surface metal layer is provided with strip crevice, metal throuth hole is along the edge distribution of upper surface metal level and surround a semi-surrounding structure, semi-surrounding structure forms resonant cavity, feed microstrip line is positioned at resonant cavity opening part and is connected with upper surface metal level, upper surface metal level is connected with the conductive metal layer of lower surface metal layer by metal throuth hole inwall, the resonant cavity that strip crevice is positioned at and length direction point to the opening of resonant cavity.Adopt the dual-band antenna of half module substrate integrated wave guide and the dual-band antenna of substrate integration wave-guide to compare size and dwindle half; Adopt the double-layer circuit board design of upper surface metal level and lower surface metal layer to be convenient to planar circuit integrated; Employing arranges strip crevice and realizes external radiation in lower surface metal layer.
The upper surface of dielectric substrate of the present utility model is also provided with half coplanar waveguide structure, and half coplanar waveguide structure provides matched impedance and is connected with upper surface metal level for feed microstrip line.Adopt half coplanar wave structure to play certain impedance matching effect to feed microstrip line.
The quantity of strip crevice of the present utility model be 2 above and be parallel to each other.Adopt 2 above strip crevices can meet under different situations antenna in the demand aspect gain or radiation direction.
The length of strip crevice of the present utility model is to be more than or equal to 1/8 to be less than or equal to 7/8 dielectric substrate overall width, and width is to be more than or equal to 1/25 to be less than or equal to 7/25 dielectric substrate total length.Adopting length is to be more than or equal to 1/8 to be less than or equal to 7/8 dielectric substrate overall width and to adopt width be to be more than or equal to 1/25 design that is less than or equal to 7/25 dielectric substrate total length, can meet the requirement for different resonance frequencys.
Distance between adjacent bar of the present utility model gap is to be more than or equal to 1/7 to be less than or equal to 1/2 dielectric substrate total length.Adopting distance between adjacent bar gap is to be more than or equal to 1/7 design that is less than or equal to 1/2 dielectric substrate total length, can meet the demand of antenna aspect different gains or radiation direction, can realize the demand that regulates resonance frequency simultaneously.
The width of half co-planar waveguide of the present utility model is to be more than or equal to 1/13 overall width that is less than or equal to 3/8 dielectric substrate, and length is to be more than or equal to 1/11 to be less than or equal to 7/11 dielectric substrate total length.The width that adopts half co-planar waveguide is to be more than or equal to 1/13 to be less than or equal to the overall width of 3/8 dielectric substrate and to adopt length be to be more than or equal to 1/11 design that is less than or equal to 7/11 dielectric substrate total length, can effectively regulate impedance matching.
The beneficial effects of the utility model are: (1) can change operating frequency by changing shape, quantity, size or the relative distance of strip crevice; (2) adopt half module substrate integrated wave guide, effectively reduced the size of dual-band antenna; (3) adopt the double-layer circuit board design of upper surface metal level and lower surface metal layer to be convenient to planar circuit integrated; (4) adopt half coplanar waveguide structure that matched impedance is provided, can reduce antenna energy loss, improve the radiance of antenna.
Accompanying drawing explanation
Fig. 1 is the front schematic view of half module substrate integrated wave guide two-band slot antenna of the present utility model;
Fig. 2 is the schematic rear view of half module substrate integrated wave guide two-band slot antenna of the present utility model;
Fig. 3 is that the reflection coefficient S11 of half module substrate integrated wave guide two-band slot antenna of the present utility model is with frequency change figure;
Fig. 4 is the antenna pattern of half module substrate integrated wave guide two-band slot antenna of the present utility model.
Embodiment
Below in conjunction with the drawings and specific embodiments, further illustrate the utility model, should understand these embodiment and only for the utility model is described, be not used in restriction scope of the present utility model, after having read the utility model, those skilled in the art all fall within the application's claims limited range to the modification of the various equivalent form of values of the present utility model.
As illustrated in fig. 1 and 2, two-band slot antenna based on half module substrate integrated wave guide comprises the dielectric substrate 1 of rectangle and the metal throuth hole 2 that inwall is provided with conductive metal layer, upper surface at dielectric substrate 1 is provided with upper surface metal level 3 and feed microstrip line 5, lower surface at dielectric substrate 1 is provided with lower surface metal layer 4, in lower surface metal layer 4, be provided with two strip crevices that are parallel to each other 6, metal throuth hole 2 is along the upper edge of upper surface metal level 3, right side edge and lower edge are uniformly distributed and form a semi-surrounding structure, this semi-surrounding structure forms resonant cavity, feed microstrip line 5 is positioned at downside and the close resonant cavity opening part of dielectric substrate, feed microstrip line 5 is connected with upper surface metal level 3, upper surface metal level 3 is connected with the conductive metal layer of lower surface metal layer 4 by metal throuth hole 2 inwalls, two strip crevices 6 are positioned at the opening of resonant cavity and length direction sensing resonant cavity.
When the overall width W of dielectric substrate 1 is antenna lowest operating frequency 1/5 to 1/3 times of corresponding vacuum medium wavelength; The total length L of dielectric substrate 1 is 1/3 to 1/2 times of the corresponding vacuum medium wavelength of antenna lowest operating frequency; Two strip crevices 6 be shaped as rectangle; The length S of two strip crevices 6
lequate and be more than or equal to 1/8 to be less than or equal to 7/8 dielectric substrate 1 overall width W; The width S w of two strip crevices 6 equates and is more than or equal to 1/25 to be less than or equal to 7/25 dielectric substrate 1 total length L; The space D of two strip crevices 6
2be more than or equal to 1/7 and be less than or equal to 1/2 dielectric substrate 1 total length L; The ratio of the diameter of each through hole of metal throuth hole 2 and the spacing of adjacent through-holes is more than or equal to 0.5 and is less than or equal to 1.
The upper surface of dielectric substrate 1 be also provided with one and half coplanar waveguide structure 7, half coplanar waveguide structures 7 near upper surface metal level 3 with the junction of feed microstrip line 5 and be connected with upper surface metal level 3, for feed microstrip line 5 provides matched impedance; The width C of half coplanar waveguide structure 7
2be more than or equal to 1/13 and be less than or equal to 3/8 dielectric substrate 1 overall width W; Spacing C between half coplanar waveguide structure 7 and right side upper surface metal level 3
1be more than or equal to 1/13 and be less than or equal to 1/8 dielectric substrate 1 overall width W; The length D of half coplanar waveguide structure 7
tbe more than or equal to 1/11 and be less than or equal to 7/11 dielectric substrate 1 total length L.Each dimensional parameters and influence each other restriction relevant with substrate used thereof material above, in practical application according to the restriction of performance requirement and mounting condition, performance parameter that need to be to antenna, such as directional diagram, directivity factor, efficiency, input impedance, polarization and frequency band etc. carried out comprehensive study, the present invention, through the balance of the aspects such as the size of antenna, performance, structure are arranged, has finally obtained following preferably structure execution mode.
Preferred version of the present utility model is: dielectric substrate 1 adopts wide-dielectric constant polytetrafluoroethylglass glass cloth coated copper foil plate (F4BM) substrate that thickness is 0.8mm, its relative dielectric constant ε
rbe 2.2, losstangenttanδ is 0.001; The total length L of dielectric substrate 1 and overall width W are respectively 24.8mm and 12.4mm; The length S of two strip crevices 6
land width S
wbe respectively 7.4mm and 1mm, position D cracks
3and D
4be respectively 2.9mm and 0.6mm, the space D of two strip crevices 6
2for 12mm; The width C of feed microstrip line 5
3and length L
mbe respectively 2.4mm and 5mm; The diameter of each through hole of metal throuth hole 2 is 1mm, the spacing L of adjacent two through holes
gfor 1.5mm; The width C of half coplanar waveguide structure 7
2, spacing C
1with length D
tbe respectively 0.6mm, 0.7mm and 6mm.With document [Rmili H, Floc'h J M, Khaleghi A.Design of wideband double-sided printed dipole antenna for C-and X-band applications[J] .Electronics Letters, 2006, 42 (19): 1076-1077] in, C/X two-band printed on both sides dipole antenna (is of a size of 75mm * 50mm, meet the resonance point 6.68GHz of S11<-10dB, 8.88GHz, the corresponding gain of 9.56GHz and 10.61GHz is respectively 3dBi, 4.1dBi, 2.9dBi and 3.5dBi) compare, the area of antenna of the present utility model be in the document antenna 8.2%, and the performance of antenna is substantially the same, realized undersized C/X two-band work antenna.
As shown in Figure 3; provided the reflection coefficient S11 of half module substrate integrated wave guide two-band slot antenna with frequency change figure; visible this two-band slot antenna can be operated in C frequency range simultaneously, and (resonance point frequency is 5.74GHz; corresponding S11 is-21.86dB) and X frequency range (resonance point frequency is 11.36GHz; corresponding S11 is-25.09dB), C frequency band resonance is put half TE of corresponding half module substrate integrated wave guide resonant cavity
101pattern, X frequency band resonance is put half TE of corresponding half module substrate integrated wave guide resonant cavity
102pattern.
As shown in Figure 4; this half module substrate integrated wave guide two-band slot antenna is basically identical in emulation and the measurement result of E face and H surface radiation directional diagram; result shows that antenna has omnidirectional radiation characteristic (resonance point gain is 2.2dBi) at C frequency band resonance point, X frequency band resonance point tool directional radiation properties (resonance point gain is 5.4dBi).
Claims (8)
1. the two-band slot antenna based on half module substrate integrated wave guide, comprise the dielectric substrate (1) of rectangle and the metal throuth hole (2) that inwall is provided with conductive metal layer, it is characterized in that: the upper surface of described dielectric substrate (1) is provided with upper surface metal level (3) and feed microstrip line (5), the lower surface of described dielectric substrate (1) is provided with lower surface metal layer (4), described lower surface metal layer (4) is provided with strip crevice (6), described metal throuth hole (2) is along the edge distribution of upper surface metal level (3) and surround a semi-surrounding structure, described semi-surrounding structure forms resonant cavity, described feed microstrip line (5) is positioned at resonant cavity opening part, and be connected with upper surface metal level (3), described upper surface metal level (3) is connected with the conductive metal layer of lower surface metal layer (4) by metal throuth hole (2) inwall, the resonant cavity that described strip crevice (6) is positioned at and length direction point to the opening of resonant cavity.
2. the two-band slot antenna based on half module substrate integrated wave guide according to claim 1; it is characterized in that: the upper surface of described dielectric substrate (1) is also provided with half coplanar waveguide structure (7), described half coplanar waveguide structure (7) provides matched impedance and is connected with upper surface metal level (3) for feed microstrip line (5).
3. the two-band slot antenna based on half module substrate integrated wave guide according to claim 1 and 2, is characterized in that: the quantity of described strip crevice (6) be two above and be parallel to each other.
4. the two-band slot antenna based on half module substrate integrated wave guide according to claim 1 and 2; it is characterized in that: the gap length of described strip crevice (6) is more than or equal to 1/8 overall width that is less than or equal to 7/8 dielectric substrate (1), gap width is more than or equal to 1/25 total length that is less than or equal to 7/25 dielectric substrate (1).
5. the two-band slot antenna based on half module substrate integrated wave guide according to claim 3; it is characterized in that: the gap length of described strip crevice (6) is more than or equal to 1/8 overall width that is less than or equal to 7/8 dielectric substrate (1), gap width is more than or equal to 1/25 total length that is less than or equal to 7/25 dielectric substrate (1).
6. the two-band slot antenna based on half module substrate integrated wave guide according to claim 3, is characterized in that: the distance between adjacent two strip crevices (6) is more than or equal to 1/7 total length that is less than or equal to 1/2 dielectric substrate (1).
7. the two-band slot antenna based on half module substrate integrated wave guide according to claim 5, is characterized in that: the distance between adjacent two strip crevices (6) is more than or equal to 1/7 total length that is less than or equal to 1/2 dielectric substrate (1).
8. the two-band slot antenna based on half module substrate integrated wave guide according to claim 2; it is characterized in that: the width of described half co-planar waveguide (7) is more than or equal to 1/13 overall width that is less than or equal to 3/8 dielectric substrate (1), length is more than or equal to 1/11 total length that is less than or equal to 7/11 dielectric substrate (1).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320482362.XU CN203456593U (en) | 2013-08-07 | 2013-08-07 | Double-frequency-band slot antenna based on half-mode substrate integrated waveguides |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320482362.XU CN203456593U (en) | 2013-08-07 | 2013-08-07 | Double-frequency-band slot antenna based on half-mode substrate integrated waveguides |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105470644A (en) * | 2016-01-07 | 2016-04-06 | 华南理工大学 | Millimeter wave MIMO antenna |
| CN107154530A (en) * | 2017-04-21 | 2017-09-12 | 南京邮电大学 | Triangle half module substrate integrated wave guide carries on the back chamber slot antenna |
| CN107402031A (en) * | 2017-06-19 | 2017-11-28 | 中北大学 | Temperature, pressure biparameter sensor and preparation method based on microwave scattering principle |
-
2013
- 2013-08-07 CN CN201320482362.XU patent/CN203456593U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105470644A (en) * | 2016-01-07 | 2016-04-06 | 华南理工大学 | Millimeter wave MIMO antenna |
| CN105470644B (en) * | 2016-01-07 | 2018-01-16 | 华南理工大学 | A kind of millimeter wave mimo antenna |
| CN107154530A (en) * | 2017-04-21 | 2017-09-12 | 南京邮电大学 | Triangle half module substrate integrated wave guide carries on the back chamber slot antenna |
| CN107402031A (en) * | 2017-06-19 | 2017-11-28 | 中北大学 | Temperature, pressure biparameter sensor and preparation method based on microwave scattering principle |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140226 Termination date: 20210807 |
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| CF01 | Termination of patent right due to non-payment of annual fee |