CN106356612A - High-gain millimeter wave array antenna based on low-temperature co-fired ceramics - Google Patents
High-gain millimeter wave array antenna based on low-temperature co-fired ceramics Download PDFInfo
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- CN106356612A CN106356612A CN201510410249.4A CN201510410249A CN106356612A CN 106356612 A CN106356612 A CN 106356612A CN 201510410249 A CN201510410249 A CN 201510410249A CN 106356612 A CN106356612 A CN 106356612A
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Abstract
The invention discloses a high-gain millimeter wave array antenna based on low-temperature co-fired ceramics. The high-gain millimeter wave array antenna comprises an antenna unit array, a first feed network and a second feed network. The antenna unit array is realized on a plurality of low-temperature co-fired ceramic layers, and each antenna unit is an L-shaped probe excited substrate integrated cavity antenna unit; the first feed network is a substrate integrated waveguide feed network realized on the low-temperature co-fired ceramic layers below the antenna unit array; the second feed network is a ridged waveguide slot feed network realized the low-temperature co-fired ceramic layers below the substrate integrated waveguide feed network. The high-gain millimeter wave array antenna has advantages that gain of the antenna units can be increased, and loss of transmission lines is reduced.
Description
Technical field
The present invention relates to Electric signal processing equipment, particularly relevant with the transmission of high frequency electrical signal.
Background technology
Electronic system needs the w wave band antenna of high integration, ltcc(LTCC) technology, due to having multilayer layout, is highly suitable for the High Density Integration of antenna.But in w wave band, the high-k of ltcc material can excite obvious surface wave so that antenna gain is reduced with bandwidth.And, after operating frequency reaches w wave band, conventional transmission line (as micro-strip, co-planar waveguide etc.) has larger loss, and between circuit, isolation is not high, carries out feed using this kind of transmission line and can reduce antenna performance.
In order to lift gain it is thus proposed that a kind of sic(substrate integrated
Cavity, substrate collection coelosis) antenna, there are high gain characteristics, and inhibit surface wave, be the appropriately selected of raising array gain, but employ the excitation of substrate integration wave-guide aperture.In addition, in order to reduce transmission line loss it is thus proposed that lwg is also referred to as based on siw() transmission line technology, this kind of transmission line has compared with low-loss and high-isolation.But, with the requirement more and more higher to antenna performance for the electronic system, it is necessary in fact to improve further.
Content of the invention
The technical problem to be solved in the present invention is, for the drawbacks described above of prior art, proposes a kind of high-gain millimeter wave array antenna based on LTCC, can improve the gain of antenna element further and reduce the loss of transmission line.
The technical solution adopted for the present invention to solve the technical problems includes: provides a kind of high-gain millimeter wave array antenna based on LTCC, comprising: antenna unit array, multiple ltcc layers are realized, each antenna element is the substrate collection coelosis antenna element of l shape probe excitation；First feeding network, it is in the siw(substrate integration wave-guide realized on the multiple ltcc layers below this antenna unit array, also referred to as lwg) feeding network；And second feeding network, it is in the lrgwg(ltcc-based ridge gap realizing on the multiple ltcc layers below this host media feed network for waveguide
Waveguide, ridge gap waveguide) feeding network.
In certain embodiments, the substrate of this l shape probe excitation integrates coelosis antenna element and has cross section as the cavity of rectangle with the l shape probe that is arranged on this cavity central authorities；Wherein, this l shape probe has the pin base being formed by the hole passing through multiple ltcc layers and is located at the top of this pin base and the bearing of trend band parallel with the length of this cavity.
In certain embodiments, the length of the band of this l shape probe is related to gain；The width of the band of this l shape probe is related to impedance matching；The width of this cavity determines radiation frequency；The length of this cavity is related to impedance matching.
In certain embodiments, this ridge gap waveguide feeding network is at least one air layer covering metal covering up and down and to be located at realization on the multiple ltcc layers below this at least one air layer, and this ridge gap waveguide feeding network includes ridge gap waveguide transmission line.
In certain embodiments, this ridge gap waveguide transmission line has and is distributed in multiple bands of the plurality of ltcc layer and passes through multiple holes that these bands are connected by the plurality of ltcc layer.
In certain embodiments, this ridge gap waveguide feeding network also includes the mushroom-shaped pin positioned at this ridge gap waveguide transmission line both sides, the pin base that this mushroom-shaped needle set is made up of and the piece being located at this pin base top the hole passing through the plurality of ltcc layer.
In certain embodiments, this ridge gap waveguide feeding network is to realize on five layers of LTCC, and being wherein located at uppermost two-layer is air layer, and this air layer passes through to realize in the subregion processing cavity of the top two-layer of LTCC.
In certain embodiments, also include covering the metallic plate in this ridge gap waveguide feeding network bottom, the feed mouth of this metallic plate is provided with rectangular waveguide for signal input.
In certain embodiments, this antenna unit array is to realize on four layers of LTCC；.
In certain embodiments, this antenna unit array includes the substrate collection coelosis antenna element of 8 × 8 l shape probe excitations.
Compared with prior art, the high-gain millimeter wave array antenna based on LTCC of the present invention, by can improve the gain of antenna element further using the substrate collection coelosis antenna element of l type probe excitation, and, by way of combining using feeding substrate integrated waveguide network and ridge gap waveguide feeding network, the loss of transmission line can be reduced.
Brief description
Fig. 1 is that the dimensional decomposition structure of the array antenna of the present invention is illustrated.
Fig. 2 is the power gain performance curve of the array antenna of the present invention, and wherein, transverse axis is frequency, and unit is ghz, and the longitudinal axis is power gain, and unit is dbi.
Fig. 3 is the return loss performance curve of the array antenna of the present invention, and wherein, transverse axis is frequency, and unit is ghz, and the longitudinal axis is return loss, and unit is db, shown in solid for simulation value, dotted line show measured value.
Fig. 4 is that the stereochemical structure of the substrate collection coelosis antenna element of l type probe excitation of the present invention is illustrated.
Fig. 5 is the side elevational cross-section structural representation of the substrate collection coelosis antenna element of l type probe excitation of the present invention.
Fig. 6 is the power gain performance curve of substrate collection coelosis antenna element and the return loss performance curve of the l type probe excitation of the present invention, and wherein, transverse axis is frequency, unit is ghz, and the longitudinal axis is power gain, and unit is dbi, or, the longitudinal axis is return loss, and unit is db.
Fig. 7 is that the stereochemical structure of the lrgwg transmission line of the present invention is illustrated.
Fig. 8 is the side elevational cross-section structural representation of the lrgwg transmission line of the present invention.
Fig. 9 is that the stereochemical structure of the power splitter of employing lrgwg transmission line of the present invention is illustrated.
Figure 10 is that the front view structure of the partial enlargement of power splitter in Fig. 9 is illustrated.
Figure 11 is return loss performance curve and the distribution drain performance curve of power splitter shown in Figure 10, and wherein, transverse axis is frequency, and unit is ghz, and the longitudinal axis is return loss or distribution loss, and unit is db.
Wherein, description of reference numerals is as follows: 1 antenna unit array；2 lwg feeding networks；3 lrgwg feeding networks；4 metallic plates；11 substrate, 12 chamber 13 l probe；Width 125 hole 126 in length 122 chamber in 121 chambeies carries；The width with length 1322 band of 1321 bands for the 131 pin bases 132；31 metal ridge 32 mushroom-shaped pin；311 band 312 holes；321 pin base 322 cap；37 first port, 1 38 second port 39 the 3rd port；41 rectangular waveguides；W4 input impedance conversion live width；L5 input impedance conversion line length；L7 discontinuity compensates kerf width；L8 discontinuity compensates notch depth；L9 discontinuity compensate otch to mushroom-shaped needle gage from；R groove fillet radius.
Specific embodiment
Construction and feature in order to describe the present invention in detail are located, and hereby lift preferred embodiments below and coordinate brief description as follows.
Referring to Fig. 1 to Fig. 3, Fig. 1 is that the dimensional decomposition structure of the array antenna of the present invention is illustrated.Fig. 2 is the power gain performance curve of the array antenna of the present invention, and wherein, transverse axis is frequency, and unit is ghz, and the longitudinal axis is power gain, and unit is dbi.Fig. 3 is the return loss performance curve of the array antenna of the present invention, and wherein, transverse axis is frequency, and unit is ghz, and the longitudinal axis is return loss, and unit is db, shown in solid for simulation value, dotted line show measured value.
The present invention proposes a kind of high-gain millimeter wave array antenna based on LTCC, comprising: antenna unit array, it is to realize on multiple ltcc layers, and each antenna element 1 is the substrate collection coelosis antenna element 1 of l shape probe 13 excitation；First feeding network, it is in the siw feeding network 2 realized on the multiple ltcc layers below this antenna element 1 array；Second feeding network, it is in the lrgwg feeding network 3 realized on the multiple ltcc layers below this siw feeding network, and this lrgwg feeding network 3 has lrgwg transmission line 31；And covering metallic plate 4 in this lrgwg feeding network 3 bottom, the feed mouth of this metallic plate 4 is provided with rectangular waveguide 41 for signal input.The present invention passes through to be improved the isolation between the gain of antenna element 1, antenna element 1 and be reduced the loss of feeding network using l shape probe 13 excitation.
In the present embodiment, this antenna unit array includes the substrate collection coelosis antenna element 1 of 8 × 8 l shape probe excitations.This antenna unit array is realization upper in four layers of LTCC (- the four layer of ground floor).This siw feeding network 2 is realization upper in four layers of LTCC (- the eight layer of layer 5).This lrgwg feeding network 3 is that being wherein located at uppermost two-layer is air layer, and the subregion of nethermost two-layer is cavity, in order to form lrgwg structure in (the 9th layer-the 13 layers) the upper realizations of five layers of LTCC.Fig. 2 and Fig. 3 gives the gain curve in w wave band for this antenna unit array and return loss.
In conjunction with referring to Fig. 4 to Fig. 6, Fig. 4 is that the stereochemical structure of the substrate collection coelosis antenna element of l type probe excitation of the present invention is illustrated.Fig. 5 is the side elevational cross-section structural representation of the substrate collection coelosis antenna element of l type probe excitation of the present invention.Fig. 6 is the power gain performance curve of substrate collection coelosis antenna element and the return loss performance curve of the l type probe excitation of the present invention, and wherein, transverse axis is frequency, unit is ghz, and the longitudinal axis is power gain, and unit is dbi, or, the longitudinal axis is return loss, and unit is db.
The substrate of the l shape probe excitation of the present invention integrates coelosis antenna element 1 and has cross section as the cavity 12 of rectangle with the l shape probe 13 that is arranged on this cavity 12 central authorities.Wherein, this l shape probe 13 has the pin base 131 being formed by the hole of the LTCC matrix 11 passing through multilayer and is located at the top of this pin base 131 and the bearing of trend band parallel with the length 121 of this cavity 12 132.Wherein, cavity (i.e. sic) 12 is main radiant body, l shape probe 13 also radiant section energy.The length 1321 of the band 132 of this l shape probe 13 is related to gain；The width 1322 of the band 132 of this l shape probe 13 is related to impedance matching；The width 122 of this cavity 12 determines radiation frequency；The length 121 of this cavity 12 is related to impedance matching.Fig. 6 gives and emulates the return loss plot (shown in solid) drawing and gain curve (shown in chain-dotted line) in w wave band.
Referring to Fig. 7 and Fig. 8, Fig. 7 is that the stereochemical structure of the lrgwg transmission line of the present invention is illustrated.Fig. 8 is the side elevational cross-section structural representation of the lrgwg transmission line of the present invention.The lrgwg feeding network of the present invention is to realize on the air layer covering metal covering 33,34 up and down and substrate (ltcc) layer.Lrgwg transmission line 31 has and is distributed in three bands 311 of three ltcc layers and passes through multiple holes 312 that these bands 311 are connected by three ltcc layers.This lrgwg transmission line 31 both sides is provided with multiple mushroom-shaped pins 32.This mushroom-shaped pin 32 has the pin base 321 of hole composition passing through three ltcc layers and the piece 322 being located at this pin base 321 top.This structure, electromagnetic wave will be propagated in the air and upper strata metal covering 33 between for the metal ridge (i.e. lrgwg transmission line 31), and communication mode is quasi- tem mould.In addition, these mushroom-shaped pins 32 and upper strata metal covering 33 form stopband characteristic, electromagnetic wave lateral transport can be prevented.It is noted that this lrgwg transmission line 31 has and gwg(gap waveguide, gap waveguide) same low-loss, high isolation, and can be integrated.
Referring to Fig. 9 to Figure 11, Fig. 9 is that the stereochemical structure of the power splitter of employing lrgwg transmission line of the present invention is illustrated.Figure 10 is that the front view structure of the partial enlargement of power splitter in Fig. 9 is illustrated.Figure 11 is the return loss performance curve of power splitter shown in Figure 10, and wherein, transverse axis is frequency, and unit is ghz, and the longitudinal axis is return loss and distribution loss, and unit is db.The present invention based on above-mentioned lrgwg transmission line it is proposed that a kind of for feed power splitter design, it has first port 37(is input port), second port 38(is one of two delivery outlets) and the 3rd port 39(be the another of two delivery outlets).Shown in Figure 10, it in the size of w wave band is: input impedance conversion line length l5=0.75 mm, discontinuity compensates kerf width l7=0.3 mm, discontinuity compensates notch depth l8=0.2 mm, discontinuity compensates otch to mushroom-shaped needle gage from l9=0.36 mm, input impedance conversion line w4=0.6 mm, groove fillet radius r=0.3 mm.Simulation performance is as shown in figure 11, wherein.Shown in solid for s11 characteristic, chain-dotted line show s21 characteristic, and dotted line show s31 characteristic.In the present embodiment, chain-dotted line and dotted line substantially coincide together that is to say, that s21 characteristic is roughly the same with s31 characteristic.
Compared with prior art, the high-gain millimeter wave array antenna based on LTCC of the present invention, the gain of antenna element can be improved by the substrate collection coelosis antenna element 1 encouraging using l type probe 13 further, and, by way of combining using siw feeding network 2 and lrgwg feeding network 3, the loss of transmission line can be reduced.
More than, only the preferred embodiments of the invention is it is intended that further illustrate the present invention, rather than it is defined.All simple replacements being carried out according to above-mentioned word and accompanying drawing disclosure of that, all in the row of the rights protection scope of this patent.
Claims (9)
1. a kind of high-gain millimeter wave array antenna based on LTCC is it is characterised in that include: antenna unit array, realizes on multiple ltcc layers, and each antenna element is the substrate collection coelosis antenna element of l shape probe excitation；First feeding network, it is in the feeding substrate integrated waveguide network realized on the multiple ltcc layers below this antenna unit array；And second feeding network, it is in the ridge gap waveguide feeding network realized on the multiple ltcc layers below this feeding substrate integrated waveguide network.
2. the high-gain millimeter wave array antenna based on LTCC according to claim 1 it is characterised in that: the substrate of this l shape probe excitation integrates coelosis antenna element and has cross section as the cavity of rectangle with the l shape probe that is arranged on this cavity central authorities；Wherein, this l shape probe has the pin base being formed by the hole passing through multiple ltcc layers and is located at the top of this pin base and the bearing of trend band parallel with the length of this cavity.
3. the high-gain millimeter wave array antenna based on LTCC according to claim 2 it is characterised in that: the length of the band of this l shape probe is related to gain；The width of the band of this l shape probe is related to impedance matching；The width of this cavity determines radiation frequency；The length of this cavity is related to impedance matching.
4. the high-gain millimeter wave array antenna based on LTCC according to any one of claims 1 to 3, it is characterized in that: this ridge gap waveguide feeding network is at least one air layer adjacent with this host media feed network for waveguide covering metal covering up and down and to be located at realization on the multiple ltcc layers below this at least one air layer, and this ridge gap waveguide feeding network includes ridge gap waveguide transmission line.
5. the high-gain millimeter wave array antenna based on LTCC according to claim 4 it is characterised in that: this ridge gap waveguide transmission line has and is distributed in multiple bands of the plurality of ltcc layer and passes through multiple holes that these bands are connected by the plurality of ltcc layer.
6. the high-gain millimeter wave array antenna based on LTCC according to claim 4, it is characterized in that: this ridge gap waveguide feeding network also includes the mushroom-shaped pin positioned at this ridge gap waveguide transmission line both sides, the pin base that this mushroom-shaped needle set is made up of and the piece being located at this pin base top the hole passing through the plurality of ltcc layer.
7. the high-gain millimeter wave array antenna based on LTCC according to claim 4, it is characterized in that: this ridge gap waveguide feeding network is to realize on five layers of LTCC, wherein being located at uppermost two-layer is air layer, and this air layer passes through to process cavity realization in the subregion of the top two-layer of LTCC.
8. the high-gain millimeter wave array antenna based on LTCC according to any one of claims 1 to 3 it is characterised in that: this antenna unit array be on four layers of LTCC realize.
9. the high-gain millimeter wave array antenna based on LTCC according to any one of claims 1 to 3 it is characterised in that: this antenna unit array includes the substrate collection coelosis antenna element of 8 × 8 l shape probe excitations.
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| CN107834137A (en) * | 2017-12-11 | 2018-03-23 | 华中科技大学 | A kind of duplexer and transmit-receive sharing millimeter wave array antenna |
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| WO2019015298A1 (en) * | 2017-07-18 | 2019-01-24 | 东南大学 | Low-profile broadband circularly-polarized array antenna using stacked travelling wave antenna elements |
| EP3703266A4 (en) * | 2017-11-15 | 2020-12-09 | Huawei Technologies Co., Ltd. | Signal transceiving device, and base station |
| WO2022007255A1 (en) * | 2020-07-10 | 2022-01-13 | 瑞声声学科技(深圳)有限公司 | Siw antenna system and communication terminal |
| CN115395251A (en) * | 2022-09-30 | 2022-11-25 | 上海交通大学 | Circular polarization integrated filter antenna array based on hybrid feed network |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2019015298A1 (en) * | 2017-07-18 | 2019-01-24 | 东南大学 | Low-profile broadband circularly-polarized array antenna using stacked travelling wave antenna elements |
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| CN108987946A (en) * | 2018-07-30 | 2018-12-11 | 北京航空航天大学 | Slot array antenna and its power division network based on substrate integration wave-guide |
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| CN115395251A (en) * | 2022-09-30 | 2022-11-25 | 上海交通大学 | Circular polarization integrated filter antenna array based on hybrid feed network |
| CN115395251B (en) * | 2022-09-30 | 2023-04-04 | 上海交通大学 | Circular polarization integrated filter antenna array based on hybrid feed network |
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Application publication date: 20170125 |