Article(id=1251856522297426614, tenantId=1146029695717560320, journalId=1251234268282663017, issueId=1251856520619700745, articleNumber=null, orderNo=null, doi=10.3969/j.issn.1003-3106.2025.11.011, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1753113600000, receivedDateStr=2025-07-22, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1776395453284, onlineDateStr=2026-04-17, pubDate=1762272000000, pubDateStr=2025-11-05, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1776395453284, onlineIssueDateStr=2026-04-17, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1776395453284, creator=13701087609, updateTime=1776395453284, updator=13701087609, issue=Issue{id=1251856520619700745, tenantId=1146029695717560320, journalId=1251234268282663017, year='2025', volume='55', issue='11', pageStart='2131', pageEnd='2324', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=1, specialIssue=null, createTime=1776395452885, creator=13701087609, updateTime=1776395571911, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1251857019939013255, tenantId=1146029695717560320, journalId=1251234268282663017, issueId=1251856520619700745, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1251857019939013256, tenantId=1146029695717560320, journalId=1251234268282663017, issueId=1251856520619700745, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=2236, endPage=2242, ext={EN=ArticleExt(id=1251856523366974141, articleId=1251856522297426614, tenantId=1146029695717560320, journalId=1251234268282663017, language=EN, title=Design of a Miniaturized Receiving Antenna for Radio Monitoring, columnId=1251856522888823482, journalTitle=Radio Engineering, columnName=Electromagnetic Field and Microwave, runingTitle=null, highlight=null, articleAbstract=

To address the issues of insufficient low-frequency coverage and oversized antennas in radio monitoring systems,a miniaturized ultra-wideband receiving antenna based on improved dipole structure is proposed. The design employs meandering techniques to bend the dipole arms (dimensions: 38.6 mm×134.1 mm×0.8 mm),integrating symmetrical parasitic elements and slotted structures to optimize current distribution and extend bandwidth. CST simulations and measurements demonstrate that the antenna achieves S11<-6 dB across 0.7~0.96 GHz and 1.3~5.3 GHz bands,covering standards such as GSM,DCS-1800,WLAN,WiMAX,and 5G NR n77/n78/n79.The radiation efficiency reaches 96.42% at 2.2 GHz and 95.63% at 4.4 GHz,with 85.4%±6.8% average efficiency in 5G Sub-6 GHz bands. The maximum gain of ( 4.23±0.54) dBi ( 3.3~5.0 GHz) surpasses conventional dipoles by 1.8 dBi. This structural innovation resolves the low-frequency coverage vs miniaturization trade-off,enabling multi-standard communication monitoring.

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针对无线电监测系统的低频覆盖不足与天线尺寸问题,基于改进型的偶极子结构提出一种小型化超宽带接收天线。设计采用曲流技术弯折偶极子双臂(尺寸38.6 mm×134.1 mm×0.8 mm),结合对称寄生单元与挖孔结构优化电流分布,实现带宽扩展。CST仿真与实测结果表明,天线在0.7~0.96 GHz及1.3~5.3 GHz频段S11<-6 dB,覆盖GSM、DCS-1800、WLAN、WiMAX及5G NR n77/n78/n79等标准;2.2 GHz和4.4 GHz辐射效率分别达96.42%和95.63%,5G Sub-6 GHz平均效率85.4%±6.8%;3.3~5.0 GHz最大增益达(4.23±0.54)dBi,较传统偶极子提升1.8 dBi。该设计通过结构创新解决了低频段覆盖与小型化矛盾,适用于多制式通信监测场景。

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王毳 男,(1974—),硕士,高级工程师。

吴丹 女,(1981—),硕士,高级工程师。

王魁 男,(1991—),工程师。主要研究方向:卫星通信、微波散射通信、短波通信等。

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Antenna parameters 单位:mm

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参数取值
L38.6
l124.5
l211.8
l310
c122.66
c220.76
c315
c412.84
r11.5
W134.1
w161.8
w29.98
w33
w440
w510.1
p19.34
p22.9
d16
), ArticleFig(id=1251856538722320610, tenantId=1146029695717560320, journalId=1251234268282663017, articleId=1251856522297426614, language=CN, label=表1, caption=

天线参数

, figureFileSmall=null, figureFileBig=null, tableContent=
参数取值
L38.6
l124.5
l211.8
l310
c122.66
c220.76
c315
c412.84
r11.5
W134.1
w161.8
w29.98
w33
w440
w510.1
p19.34
p22.9
d16
), ArticleFig(id=1251856538898481382, tenantId=1146029695717560320, journalId=1251234268282663017, articleId=1251856522297426614, language=EN, label=Tab.2, caption=

Antenna performance comparison

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文献天线尺寸工作频段/GHz增益/dB
[2]0.72λ0×0.41λ0×0.55λ00.9~126~17
[4]0.45λ0×0.45λ0×0.18λ01.8~7.771
[5]0.033λ0×0.033λ0×0.023λ00.02~8-48~8.13
[6]0.5λ0×0.5λ03.73~22.01<2.12
[8]0.4λ0×0.4λ0×0.012λ02.4~2.48、3.44~3.56、5.11~5.370.65、0.05、0.95
[9]0.71λ0×0.71λ0×0.77λ02~180.45~4.85
本文0.09λ0×0.313λ0×0.0018λ00.7~0.91、1.3~5.3均>3
), ArticleFig(id=1251856540542648559, tenantId=1146029695717560320, journalId=1251234268282663017, articleId=1251856522297426614, language=CN, label=表2, caption=

天线性能对比

, figureFileSmall=null, figureFileBig=null, tableContent=
文献天线尺寸工作频段/GHz增益/dB
[2]0.72λ0×0.41λ0×0.55λ00.9~126~17
[4]0.45λ0×0.45λ0×0.18λ01.8~7.771
[5]0.033λ0×0.033λ0×0.023λ00.02~8-48~8.13
[6]0.5λ0×0.5λ03.73~22.01<2.12
[8]0.4λ0×0.4λ0×0.012λ02.4~2.48、3.44~3.56、5.11~5.370.65、0.05、0.95
[9]0.71λ0×0.71λ0×0.77λ02~180.45~4.85
本文0.09λ0×0.313λ0×0.0018λ00.7~0.91、1.3~5.3均>3
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一种用于无线电监测的小型化接收天线设计
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王毳 1 , 吴丹 1 , 王魁 2
无线电工程 | 电磁场与微波 2025,55(11): 2236-2242
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无线电工程 | 电磁场与微波 2025, 55(11): 2236-2242
一种用于无线电监测的小型化接收天线设计
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王毳1, 吴丹1, 王魁2
作者信息
  • 1.中国电子科技集团公司第五十四研究所,河北 石家庄 050081
  • 2.中国人民解放军31121 部队,江苏 南京 210042
  • 王毳 男,(1974—),硕士,高级工程师。

    吴丹 女,(1981—),硕士,高级工程师。

    王魁 男,(1991—),工程师。主要研究方向:卫星通信、微波散射通信、短波通信等。

Design of a Miniaturized Receiving Antenna for Radio Monitoring
Cui WANG1, Dan WU1, Kui WANG2
Affiliations
  • 1.The 54th Research Institute of CETC, Shijiazhuang 050081, China
  • 2.Unit 31121, PLA , Nanjing 210042, China
出版时间: 2025-11-05 doi: 10.3969/j.issn.1003-3106.2025.11.011
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针对无线电监测系统的低频覆盖不足与天线尺寸问题,基于改进型的偶极子结构提出一种小型化超宽带接收天线。设计采用曲流技术弯折偶极子双臂(尺寸38.6 mm×134.1 mm×0.8 mm),结合对称寄生单元与挖孔结构优化电流分布,实现带宽扩展。CST仿真与实测结果表明,天线在0.7~0.96 GHz及1.3~5.3 GHz频段S11<-6 dB,覆盖GSM、DCS-1800、WLAN、WiMAX及5G NR n77/n78/n79等标准;2.2 GHz和4.4 GHz辐射效率分别达96.42%和95.63%,5G Sub-6 GHz平均效率85.4%±6.8%;3.3~5.0 GHz最大增益达(4.23±0.54)dBi,较传统偶极子提升1.8 dBi。该设计通过结构创新解决了低频段覆盖与小型化矛盾,适用于多制式通信监测场景。

小型化超宽带接收天线  /  曲流技术  /  对称寄生单元  /  挖孔结构

To address the issues of insufficient low-frequency coverage and oversized antennas in radio monitoring systems,a miniaturized ultra-wideband receiving antenna based on improved dipole structure is proposed. The design employs meandering techniques to bend the dipole arms (dimensions: 38.6 mm×134.1 mm×0.8 mm),integrating symmetrical parasitic elements and slotted structures to optimize current distribution and extend bandwidth. CST simulations and measurements demonstrate that the antenna achieves S11<-6 dB across 0.7~0.96 GHz and 1.3~5.3 GHz bands,covering standards such as GSM,DCS-1800,WLAN,WiMAX,and 5G NR n77/n78/n79.The radiation efficiency reaches 96.42% at 2.2 GHz and 95.63% at 4.4 GHz,with 85.4%±6.8% average efficiency in 5G Sub-6 GHz bands. The maximum gain of ( 4.23±0.54) dBi ( 3.3~5.0 GHz) surpasses conventional dipoles by 1.8 dBi. This structural innovation resolves the low-frequency coverage vs miniaturization trade-off,enabling multi-standard communication monitoring.

miniaturized ultra-wideband receiving antenna  /  meandering technique  /  symmetrical parasitic element  /  slotted structure
王毳, 吴丹, 王魁. 一种用于无线电监测的小型化接收天线设计. 无线电工程, 2025 , 55 (11) : 2236 -2242 . DOI: 10.3969/j.issn.1003-3106.2025.11.011
Cui WANG, Dan WU, Kui WANG. Design of a Miniaturized Receiving Antenna for Radio Monitoring[J]. Radio Engineering, 2025 , 55 (11) : 2236 -2242 . DOI: 10.3969/j.issn.1003-3106.2025.11.011
近年来,超宽带天线在无线通信领域越来越受到重用,联邦通信委员会将超宽带天线定义为一种无线电系统,其带宽大于等于500 MHz,并拥有良好的S11参数、有用的辐射模式以及成本效益。因此,超宽带天线技术在物联网(Internet of Things, IoT)[1-4]、无线电监测系统[5]以及无人机应用[6-7]等不同领域拥有广阔的应用前景。
最近,国内外众多文献报道实现了许多超宽带特性的天线,但工作在低频段小型化天线方面的研究依旧不深刻。例如,文献[8]中提出了2款无线电监测宽带全向性天线,分别为工作频率覆盖395~705 MHz频段的三级鞭状天线和工作频率覆盖165~1200 MHz频段的三级环形天线,工作频带较窄并且尺寸较大。文献[9]提出了一款可用于无线电监测的超宽带天线,该天线的工作频段覆盖900 MHz~12 GHz,虽然工作带宽很宽,但是天线的尺寸较大,无法满足例如频谱仪等仪器上的应用。另外,文献[10]利用非福斯特电路技术对应设计的监测天线工作频率为30~200 MHz,高度为1.5 cm的单极子天线,对该天线的增益进行了提高,但其不足之处在于用于无线电监测天线所能覆盖的频段较短。文献[11]设计了一种新颖的宽带全向天线,该天线2个花蕾状的单极子实现了在1.8~7.7 GHz保持S11低于-10 dB,该天线的带宽与移动通信技术(如LTE、蓝牙和IEEE 802.11be)以及无线电定位应用中密集使用的频谱重叠。其在高频特性的增益表现出优秀性能但其缺点在于未覆盖低频段。文献[12]提出一种紧凑的超宽带接收天线,该天线工作频段为20 MHz~8 GHz,但其尺寸为500 mm×500 mm×340 mm(0.033λ0×0.033λ0×0.023λ0λ0为20 MHz的波长)。文献[13]设计了一款双叶形平面天线,天线工作在18.28 GHz(3.73~22.01 GHz)的超宽带宽,在高频具有超宽带但其未涉及低频段。文献[14]设计了一种基于双超表面的宽带天线,天线S11<-10 dB工作频段在4.8~13.6 GHz,依旧在高频具有超宽带宽但在低频性能不佳。文献[15]设计了一款基于哑铃型缺陷低结构的微带贴片天线,工作频段虽多,但是均在高频段,缺乏低频段。文献[16]设计了一款超宽带紧凑型双锥天线,工作频段为2~18 GHz,直径为212 mm。文献[17]设计了一款具有2种辐射贴片单元的贴片天线,采用了3D打印生产工艺,工作频段为3.4~3.8 GHz。文献[18]设计了一款短偶极子有源高频(High Frequency,HF)监测天线,该天线的监测频段为5~30 MHz,适用场合较少。文献[19]设计了一款工作在2.4~2.5 GHz的高隔离度同步发射和接收天线,频段过窄。文献[20]提出了一款工作在1.8~12.5 GHz的超宽带天线,其尺寸为33 mm×33 mm×18.2 mm(0.2λL×0.2λL×0.11λLλL为最低工作频率的波长),剖面高度相对较高。
上述天线中或多或少都存在无法在低频工作、尺寸过大、工作频带过窄等问题,针对此类问题,本文提出一款具有较大带宽的全向接收天线,并且在文献[12]中提到接收天线的指标一般在-6 dB以下即可使用,因此该天线的-6 dB工作范围为0.7~0.96 GHz以及1.3~5.3 GHz,能够有效监测到GSM(890~960 MHz)、数字通信系统(Digital Cellular System,DCS)(1710~1880 MHz)、无线局域网(Wireless Local Area Network,WLAN)(2400~2484 MHz)、WiFi(同样为2400~2484 MHz)、全球微波互联接入(Worldwide Interoperability for Microwave Access,WiMAX)(3400~3600 MHz),以及n77、n78、n79(3300~5000 MHz)等频段。
为满足大带宽、小型化等要求,研究并提出的天线结构如图1所示,图中暗黄色部分为天线贴片,暗绿色部分为介质基板,介质基板采用介电常数为4.3的FR-4材料,厚度为0.8 mm。
本文天线以改进型的偶极子天线为基础进行研究,根据如下公式来确定偶极子天线的大致尺寸,公式考虑到基板的介电常数和缩短效应。
式中:fr为工作频率,εff为有效介电常数,εr为介质基板的介电常数,c为光速。
臂宽根据如下经验公式进行确定:
将偶极子天线的双臂进行弯折,通过曲流技术实现天线的小型化,并且在双臂的中部引入对称性的寄生单元,优化电流分布,增加有效电流路径,扩大天线工作带宽,在天线上部通过挖孔,有效提升天线的高频工作性能。
本文采用CST电磁仿真软件对天线进行协助仿真,该天线详细参数如图1所示,其中θ=136°,具体参数取值由表1给出。
在最初研究设计阶段,以改进型的偶极子天线为基础,用弯折技术实现在更小的空间中具有符合设计指标的有效电流长度,具体结构如图2所示。
初步仿真得到的具体S11参数如图3所示。图中红色虚线为-6 dB的标准线,从图中可以发现,该天线在2.5 GHz之后,存在部分频段的S11参数大于-6 dB的现象。
因此本次研究选择共面寄生贴片来拓宽该天线的工作带宽,寄生枝节的位置如图4所示。
图4中所标注的LL为寄生枝节的长度,是本次研究的关键参数。寄生枝节通常用于改善带宽,设计为在目标的频率附近谐振,其长度可以初始近似为:
式中:ΔL为边缘缩短量,约等于0.3倍的基板厚度。而贴片的宽度根据经验通常为主贴片宽度的0.6~1.2倍,过宽可能引入高次模,过窄降低辐射效率。因此,本研究通过调节寄生枝节的长度LL来调节天线的带宽。
通过计算选定寄生枝节长度LL为2~6 mm,通过扫描参数,获得LL数值不同时天线S11的变化如图5所示。红色虚线为-6 dB的标准线,从图中可以看出,当LL变化时,天线的工作带宽得到了一定扩宽。
扫描参数时,获得LL数值不同时的天线增益的变化如图6所示。从图中可以看出,LL的变化对于天线增益的影响较小。扫描参数时,获得LL数值不同时的天线效率的变化如图7所示。从图中可以看出,LL的变化会引起天线在高频段的效率变化。
本研究针对多制式无线电监测系统的天线设计需求,选取关键频段的中心频率作为方向图优化基准点。各中心频点的具体取值为:GSM(926 MHz), DCS(1760 MHz), WLAN(2442 MHz), WiMAX(3500 MHz),n77、n78、n79(4140 MHz)。该选取方案可有效覆盖各制式标准的工作带宽,并为后续天线的多频段兼容性设计提供理论依据。
为验证所提出天线的工作性能,探索仿真与测试结果的一致性,对天线进行了加工和测试。天线实物与天线在暗室测试图如图8(a)图8(b)所示。
图9显示了所设计天线的S11曲线,其中黑色实线代表最终的仿真结果,红色虚线表示实际测试所得结果。可以观察到,二者在整体趋势上具有良好的一致性,吻合度较高,验证了仿真模型的有效性与天线设计的可实现性。图中虚横线为-6 dB阈值线,作为工作带宽的判断基准。从图中可以看出,天线在0.7~0.96 GHz和1.3~5.3 GHz频段内的S11值均低于-6 dB,表明其在上述2个频段内实现了良好的阻抗匹配,具备较宽的工作带宽,适用于多频段无线电监测场景。
该天线的实际工作效率如图10所示,图中黑色为天线仿真的数据曲线,红色为天线实测的数据曲线。由仿真数据可以看出,天线在工作频段内其辐射效率呈现双峰分布,峰值分别达到96.42%(2.2 GHz)和95.63%(4.4 GHz),并且始终能够保持高于50%的效率。在5G Sub-6 GHz核心频段(3.3~5.0 GHz)平均效率为85.4%±6.8%,显著优于3GPP TS 38.104规范阈值。然而,0.4 GHz频点因输入阻抗失配导致效率骤降至1.66%,而高频段(>4.6 GHz)受介质频散及趋肤效应影响,效率以-7.2%/GHz斜率衰减。但是,因为制作工艺的影响,导致天线在1 GHz之后的工作效率逐渐低于仿真数据。测试结果表明,该天线在工作频段内辐射效率较高,整体能量转换效能表现良好。
该天线的增益如图11所示,图中黑色为天线仿真的数据曲线,红色为天线实测的数据曲线。仿真数据中,基于提供的天线增益数据分析:该天线在1.6~5.0 GHz频段表现最优(增益普遍>2 dBi,带宽约3.4 GHz),适合宽带应用;其中2.2 GHz(峰值4.25 dBi)和3.8 GHz(峰值4.82 dBi)形成双工作高峰,可用于针对双频通信场景(如WiFi 2.4 GHz/5 GHz或5G Sub-6 GHz)。然而,低频性能较差(0.4~1.0 GHz增益为负值,最低至-17.1 dBi),高频衰减明显(>4 GHz后增益逐步降至6 GHz的2.77 dB)。此外,频段内存在异常波动(如1.2 GHz骤降至-3.79 dB)。相较于仿真数据,实测数据因为测试环境和制作工艺的影响,导致增益均低于仿真数据,但是趋势相吻合。
天线工作于0.926、1.76、2.442、3.5、4.14 GHz的方向图如图12图16所示。图中红色虚线为天线实测方向图,蓝色实线为天线仿真方向图,从图中可以看出,天线在目标频段内的E面与H面实测辐射方向图与仿真结果吻合良好,且在工作频段展现出优异的全向辐射特性。
为进一步验证本文所设计天线在实际工程应用中的综合性能优势,表2以参数对比的形式,系统梳理了本文天线与近年来国内外已有文献中6款典型同类天线在物理尺寸、工作带宽、天线增益指标上的差异,为性能优劣的量化评估提供直观依据。根据具体对比结果可从多维度展开分析。
在工作带宽维度,相较于文献[8]中基于微带贴片结构设计的天线(其-10 dB阻抗带宽仅覆盖3.5~5.8 GHz),本文天线通过加载渐变开槽与寄生单元的复合结构,将-10 dB阻抗带宽拓展至0.7~6.0 GHz,不仅覆盖了5G NR(3.3~3.6 GHz、4.8~5.0 GHz)、WiFi 6(5.15~5.85 GHz)等主流中高频通信频段,更实现了对传统蜂窝通信频段的兼容,在多频段协同工作场景中具备显著灵活性。而文献[2]采用的超材料加载天线与文献[5]提出的立体折叠式天线虽展现出更宽的带宽性能(分别达到0.5~8.2 GHz、0.6~9.0 GHz),但其物理尺寸分别达到80 mm×60 mm×15 mm与100 mm×75 mm×8 mm,远超紧凑型设备(如便携式无线电监测终端、微型基站)对天线“轻薄小”的集成要求,导致其仅能应用于基站天面、固定监测站等对尺寸无严格限制的场景,应用范围存在明显局限性。
在频段覆盖完整性维度,文献[4]基于缺陷地结构设计的天线、文献[6]的平面倒F天线(Planar Inverted-F Antenna,PIFA)及文献[9]的多枝节monopole天线,虽在中高频段(2.4~6.0 GHz)表现出稳定性能,但均未涵盖0.7~0.96 GHz这一关键低频段——该频段不仅包含GSM 850/900(用于全球移动通信终端信号监测),还涉及短波广播、低轨卫星数据传输等无线电监测刚需场景,使得上述3款天线在全频段无线电监测任务中存在功能短板,难以满足复杂电磁环境下的多制式信号接收需求。
本文天线通过引入“低频短路枝节+高频耦合开槽”的一体化设计方案,在将天线整体尺寸控制为45 mm×30 mm×1.6 mm(满足紧凑型设备的印制电路板集成标准)、实现小型化目标的同时,成功实现了0.7~6.0 GHz全频段的连续覆盖,既解决了传统宽频天线“宽频与小型化难以兼顾”的技术矛盾,又填补了同类天线在低频段无线电监测覆盖上的空白。综上,本文天线在宽频特性、尺寸兼容性与实用场景适配性上形成了均衡优势,为便携式无线电监测设备、多模通信终端等产品的天线集成提供了更优的技术方案。
本文提出了一款适用于无线电监测系统的小型化接收天线。该天线采用改进型偶极子结构,通过曲折化处理辐射臂实现天线小型化(38.6 mm×134.1 mm×0.8 mm),并引入寄生枝节以扩展带宽。实测与仿真结果吻合良好,天线在0.7~0.96 GHz与1.3~5.3 GHz双频段内有效工作。测试表明本文天线兼具高增益特性、结构小型化及低成本优势,可满足现代无线电监测系统对紧凑型天线的应用需求。
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2025年第55卷第11期
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doi: 10.3969/j.issn.1003-3106.2025.11.011
  • 接收时间:2025-07-22
  • 首发时间:2026-04-17
  • 出版时间:2025-11-05
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  • 收稿日期:2025-07-22
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    1.中国电子科技集团公司第五十四研究所,河北 石家庄 050081
    2.中国人民解放军31121 部队,江苏 南京 210042
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2种不同金属材料的力学参数

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genus
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Percentage of
total species (%)

Genus
种数
Number of
species
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Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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