200 GHz介质棒天线设计
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摘要
介质棒天线由于其高增益、小型化、主瓣宽度窄的特点使其在mm波频段广泛应用。将介质棒天线的使用频率提高到太赫兹频段,可以提高太赫兹频段透镜天线及反射面天线的辐射效率。用来做天线阵列时,相邻天线间互耦可以被大幅减小。文中设计一款太赫兹介质棒天线,分析计算太赫兹介质棒天线的传输模式,利用阻抗匹配的方法设计匹配过渡段,该介质棒天线具有宽带性质,中心频率200 GHz处增益为13.88 dB,其副瓣电平低于-20 dB,中心频率200GHz,在180～220GHz频率范围内电压驻波比均为1.2以下,达到设计要求。
The dielectric rod antenna is widely used in millimeter band for its high gain, miniaturization and narrow main lobe. The operating frequency can be increased to terahertz band in order to enhance the radiation efficiency of the lens antenna and reflector. Mutual coupling can be largely reduced by adopting the dielectric antenna. This paper designs a dielectric antenna in terahertz band. In the design process, it analyzes the wave modes of the antenna and adopts the impedance matching method to design the transition section. Chebyshev transformer can decrease the VSWR and increase the bandwidth of the antenna. The antenna is an ultra-wideband antenna. The gain of the antenna can be reached to about 14 dB at the center frequency of 200 GHz. The sidelobe level can be less than-20 dB. The design requirement that VSWR is less than 1.2 in the frequency of 180～220 GHz can be satisfied.
The dielectric rod antenna is widely used in millimeter band for its high gain, miniaturization and narrow main lobe. The operating frequency can be increased to terahertz band in order to enhance the radiation efficiency of the lens antenna and reflector. Mutual coupling can be largely reduced by adopting the dielectric antenna. This paper designs a dielectric antenna in terahertz band. In the design process, it analyzes the wave modes of the antenna and adopts the impedance matching method to design the transition section. Chebyshev transformer can decrease the VSWR and increase the bandwidth of the antenna. The antenna is an ultra-wideband antenna. The gain of the antenna can be reached to about 14 dB at the center frequency of 200 GHz. The sidelobe level can be less than-20 dB. The design requirement that VSWR is less than 1.2 in the frequency of 180～220 GHz can be satisfied.
引文
[1] HUANG K,WANG Z.V-Band Patch-Fed Rod Antennas for High Data-Rate Wireless Communications[J].IEEE Transactions on Antennas and Propagation,2006,54(1):297-300.
[2] ITTIPIBOON A,SHAFAI L,BRIDGES E.A dielectric rod antenna as a high efficiency feed for reflector antennas[J].Electrical Engineering Journal Canadian,1981,6(4):10-13.
[3] LIOUBTCHENKO D V,DUDOROV S N,MALLAT J A,et al.Dielectric rod waveguide antenna for W band with good input match[J].IEEE Microwave and Wireless Components Letters,2005,15(1):4-6.
[4] HANHAM S M,BIRD T S,HELLICAR A D,et al.Optimized dielectric rod antennas for terahertz applications[C]// International Conference on Infrared.IEEE,2009.
[5] POUSI J P,LIOUBTCHENKO D V,DUDOROV S N,et al.High permittivity dielectric rod waveguide antenna for 110～150 GHz[C]// European Conference on Antennas & Propagation.IEEE,2006.
[6] POUSI J P,LIOUBTCHENKO D V,DUDOROV S N,et al.High Permittivity Dielectric Rod Waveguide as an Antenna Array Element for Millimeter Waves[J].IEEE Transactions on Antennas and Propagation,2010,58(3):714-719.
[7] CHEN P,MENG R,ZHU Q.Design of Compact High-Gain Dielectric Rod Antennas and Arrays in Lossy Medium[J].Microwave and Optical Technology Letters,2013,55(10):2277-2282.
[8] ROUSSTIA M W,HERBEN M H A J.High performance 60 GHz dielectric rod antenna with dual circular polarization[C]// Microwave Conference.2013.
[9] ALA R,SADEGHZADEH R,KAZEMI R.Two-layer dielectric rod antenna for far distance[C]// Antennas & Propagation Conference.2010.
[10] LIU C W,CHEN C C.A UWB Three-Layer Dielectric Rod Antenna with Constant Gain,Pattern and Phase C/enter[J].IEEE Transactions on Antennas & Propagation,2012,60(10):4500-4508.
[11] 严海隆.Ka 波段多波束收发集成透镜天线[D].杭州:浙江大学,2018.
[12] 王楠楠,邱景辉,李高飞,等.Ka 频段介质棒天线优化设计[J].电波科学学报,2010,25(1):161-166.
[13] 曹树杰.一种改进型的高增益短介质棒馈源[J].信息通信,2016(5):1.
[2] ITTIPIBOON A,SHAFAI L,BRIDGES E.A dielectric rod antenna as a high efficiency feed for reflector antennas[J].Electrical Engineering Journal Canadian,1981,6(4):10-13.
[3] LIOUBTCHENKO D V,DUDOROV S N,MALLAT J A,et al.Dielectric rod waveguide antenna for W band with good input match[J].IEEE Microwave and Wireless Components Letters,2005,15(1):4-6.
[4] HANHAM S M,BIRD T S,HELLICAR A D,et al.Optimized dielectric rod antennas for terahertz applications[C]// International Conference on Infrared.IEEE,2009.
[5] POUSI J P,LIOUBTCHENKO D V,DUDOROV S N,et al.High permittivity dielectric rod waveguide antenna for 110～150 GHz[C]// European Conference on Antennas & Propagation.IEEE,2006.
[6] POUSI J P,LIOUBTCHENKO D V,DUDOROV S N,et al.High Permittivity Dielectric Rod Waveguide as an Antenna Array Element for Millimeter Waves[J].IEEE Transactions on Antennas and Propagation,2010,58(3):714-719.
[7] CHEN P,MENG R,ZHU Q.Design of Compact High-Gain Dielectric Rod Antennas and Arrays in Lossy Medium[J].Microwave and Optical Technology Letters,2013,55(10):2277-2282.
[8] ROUSSTIA M W,HERBEN M H A J.High performance 60 GHz dielectric rod antenna with dual circular polarization[C]// Microwave Conference.2013.
[9] ALA R,SADEGHZADEH R,KAZEMI R.Two-layer dielectric rod antenna for far distance[C]// Antennas & Propagation Conference.2010.
[10] LIU C W,CHEN C C.A UWB Three-Layer Dielectric Rod Antenna with Constant Gain,Pattern and Phase C/enter[J].IEEE Transactions on Antennas & Propagation,2012,60(10):4500-4508.
[11] 严海隆.Ka 波段多波束收发集成透镜天线[D].杭州:浙江大学,2018.
[12] 王楠楠,邱景辉,李高飞,等.Ka 频段介质棒天线优化设计[J].电波科学学报,2010,25(1):161-166.
[13] 曹树杰.一种改进型的高增益短介质棒馈源[J].信息通信,2016(5):1.