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60-ghz wideband circularly polarized antenna array based on TE340-mode SIC and sequential rotation feeding technique

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IET MICROWAVES antennaS & PROPAGATION 2021年第7期15卷 807-814页

作者： Zhu, Yuefang Qi, Zihang Zhu, Hua Li, Xiuping Beijing Univ Posts & Telecommun Sch Elect Engn Beijing Peoples R China Beijing Univ Posts & Telecommun Beijing Key Lab Work Safety Intelligent Monitorin Beijing Peoples R China Beijing Univ Posts & Telecommun Minist Educ Key Lab Universal Wireless Commun Beijing Peoples R China State Key Lab Millimeter Waves Nanjing Peoples R China

The authors propose a 4 x 4 circularly polarized (CP) antenna array with wide impedance bandwidth and axial-ratio (AR) bandwidth and design the same for 60-GHz applications. The overall structure of the proposed antenna array consists of a cavity-back circular patch array and two layer feed-networks. The upper feed-network is with four TE340 high-order mode substrate integrated cavities (SIC). Fed with SIC, circular patches with a pair of 42 degrees-inclined slits can achieve circular polarization. In order to improve the AR bandwidth and gain performance, the substrate integrated waveguide (SIW) sequential rotation feeding technique is utilized in the lower feed-network. For proof of concept, the 4 x 4 array is fabricated and measured. Measured results show that -10-dB impedance bandwidth of the proposed antenna array is 27.2% from 52 to 68.4 GHz and 3-dB AR bandwidth is 18.9% from 55.7 to 67.3 GHz. Furthermore, the 3-dB gain bandwidth is 26.2% from 53 to 69 GHz with a peak gain reaching 19.3 dBic at 62 GHz.

关键词： Waveguides and microwave transmission lines cavity back circular patch array circular polarization substrate integrated waveguide sequential rotation feeding technique substrate integrated waveguides microstrip antenna arrays circular patches frequency 62.0 GHz frequency 52.0 GHz to 68.4 GHz electromagnetic wave polarisation antenna accessories layer feednetworks frequency 53.0 GHz to 69.0 GHz circularly polarized antenna array frequency 55.7 GHz to 67.3 GHz wide impedance bandwidth mode SIC Single antennas substrate integrated cavities antenna arrays upper feednetwork lower feednetwork Electromagnetic wave propagation antenna feeds

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Integrated Low-Profile Low Radar Cross Section circularly polarized Dipole antenna array

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IEEE TRANSACTIONS ON antennaS AND PROPAGATION 2021年第12期69卷 8461-8469页

作者： Jin, Cheng Zhang, Binchao Yin, Liyuan Lv, Qihao Kong, Lingwen Li, Liang Beijing Inst Technol Sch Informat & Elect Beijing 100081 Peoples R China

In this article, an integrated low-profile low radar cross section (RCS) circularly polarized (CP) antenna array based on multifunctional modes generation method is proposed, which can realize good in-band radiation performance and wide out-of-band RCS reduction characteristics on the same layer without additional subassembly except for resistors. By embedding a resistor in the center of a metallic strip, the half and one and a half-wavelength resonant modes are changed into the absorption modes, while the one wavelength resonant mode is excited as the radiation mode when offset feeding at an appropriate location. Furthermore, the CP radiation performance is achieved with four bent and center-rotating-symmetric metallic strip and the sequentially rotated feeding network. The simulation results show that the designed integrated antenna array generates the same left-hand CP radiation performance as the array without embedding resistors, and the monostatic RCS of the array is significantly reduced in the lower and upper bands, with an average reduction value of 10 dB. Prototypes of the designed antenna array with 4 x 4 elements are fabricated and measured to validate the simulation results.

关键词： circularly polarized antenna array dipole antenna frequency selective surface (FSS) low radar crass section (RCS) multifunctional modes

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An E-band circularly polarized antenna array Fed by Substrate Integrated Coaxial Line (SICL)

An E-band Circularly Polarized Antenna Array Fed by Substrat...

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International Symposium on antennas and Propagation (ISAP)

作者： Cheng, Li Hong, Wei Cheng, Hao-Zhang Southeast Univ Sch Informat Sci & Engn State Key Lab Millimeter Waves Nanjing 210096 Jiangsu Peoples R China

ISBN: (纸本)9784885523021

A circularly polarized antenna array for E-band application has been designed, fabricated and measured. The antenna array is fed using substrate integrated coaxial line (SICL) technology, which can be realized by low-cost PCB process in millimeter frequencies. The simulated and measured S11 is below -10dB from 71GHz to 76 GHz. And the simulated and measured results show that both the gain of more than 11dBi and axial ratio of less than 2dB have been achieved over the interested frequency band.

关键词： Substrate integrated coaxial line (SICL) circularly polarized antenna array sequential rotation technique

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A high gain circularly polarized 2 x 2 antenna array based on the spoof surface plasmon polariton and spoof localized surface plasmon

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JOURNAL OF ELECTROMAGNETIC WAVES AND APPLICATIONS 2023年第15期37卷 1298-1316页

作者： Li, Qian-Qian Zhang, Hai-Feng Nanjing Univ Posts & Telecommun Coll Elect & Opt Engn Nanjing Peoples R China Nanjing Univ Posts & Telecommun Coll Flexible Elect Future Technol Nanjing Peoples R China Nanjing Univ Posts & Telecommun Coll Elect & Opt Engn Nanjing 210023 Peoples R China Nanjing Univ Posts & Telecommun Coll Flexible Elect Future Technol Nanjing 210023 Peoples R China

Two circularly polarized (CP) 2 x 2 array antennas based on the spoof surface plasmon polariton (SPP) and spoof localized surface plasmon (LSP) are proposed. The antenna I is fed by a feed network to increase the axial-ratio (AR) bandwidth. The spoof SPP and spoof LSP are introduced to increase the gain through energy localization, and the structure can suppress the cross-polarization to a certain extent and obtain a wider axial-ratio beamwidth. In addition, the electromagnetic band gap (EBG) is used to suppress surface waves to further increase the gain. The size of antenna I is 1.27 & lambda;g x 1.27 & lambda;g x 0.18 & lambda;g. The impedance bandwidth and the AR bandwidth of antenna I are 72% (3.15-6.75 GHz) and 55% (3.97-6.72 GHz), respectively, and the peak gain is 11.11 dBi. The antenna II optimizes the distance between the two substrates according to antenna I to further increase the gain.

关键词： Spoof surface plasmon polariton spoof localized surface plasmon feed network circularly polarized antenna array electromagnetic band gap >

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A High Gain circularly polarized Microstrip Patch antenna array for mm-Wave Applications

A High Gain Circularly Polarized Microstrip Patch Antenna Ar...

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IEEE Wireless antenna and Microwave Symposium (WAMS)

作者： Chandra, Sarikonda Hemanth Singh, Maharana Pratap Ghosh, Saptarshi Indian Inst Technol Dept Elect Engn Indore India

ISBN: (数字)9781665458467

ISBN: (纸本)9781665458467

This paper presents a planar, low profile, high gain circularly polarized microstrip patch antenna array for millimeter-wave (mm-wave) wireless communication in Kaband (26-40 GHz) applications. The single antenna element exhibits an impedance bandwidth (reflection coefficient < -10 dB) of 1.43 GHz (27.8-29.23 GHz) and an axial ratio (AR) bandwidth of 600 MHz (27.93-28.53 GHz). While designing the 1x4 antenna array, the geometry produces an impedance bandwidth of 1.74 GHz (27.79-29.53 GHz) with an AR bandwidth of 350 MHz (28.75-28.40 GHz). In addition, the array exhibits a large gain of 13.21 dBic as compared to 7.62 dBic gain of its single element. The proposed design has a compact size, simple topology, and broadside radiation. The concept is explained through parametric variation, current distribution, and radiation pattern.

关键词： high gain circularly polarized antenna array mm-wave 28 GHz

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Wideband Filtering and circularly polarized antenna arrays With Self-Packaged Multilayer Suspended Substrate Technique

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IEEE TRANSACTIONS ON COMPONENTS PACKAGING AND MANUFACTURING TECHNOLOGY 2025年第2期15卷 309-318页

作者： Guo, Jia-Xing Xiao, Jian-Kang Song, Tan Xidian Univ Sch Electromech Engn Xian 710071 Peoples R China

In this article, a new butterfly-shaped filtering antenna array with Chebyshev filtering response, and a new wideband circularly polarized antenna array have been proposed, both using self-packaged multilayer suspended substrate technique. The filtering antenna array integrates the functions of a bandpass filter, a power divider, and a 2 x 2 antenna array by using multiple coupling resonators, while the circularly polarized antenna array is constructed by the wide slot structure using sequential rotation technique with 90 degrees phase difference on neighboring antenna unit. Measured by vector network analyzer and spherical multiprobe test system, the filtering antenna array has been demonstrated with an impedance bandwidth of 11.8%, a favorable gain of 10.5 dBi, and a pair of gain zeros;meanwhile, the circularly polarized antenna array has a measured fractional impedance bandwidth of 60.9%, a maximum gain of 10.2 dBi, and a wide 3 dB axial ratio bandwidth covering 3.18-5.8 GHz. The measured results agree with the simulations. The proposed works integrate the advantages of suspended coplanar waveguide (SCPW), multiple resonators including microstrip patches and wide slots, which not only improve the design flexibility but also achieve wideband and favorable gain. While the feeding network and the radiation elements can be protected by the self-packaged construction.

关键词： antenna arrays Filtering Couplings Substrates Slot antennas Broadband antennas Band-pass filters Microstrip antenna arrays antenna feeds Power harmonic filters Butterfly-shaped patch circularly polarized antenna array filtering antenna array self-packaging suspended coplanar waveguide (SCPW)

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OAM waves with fewer redundant OAM modes generated by two circularly polarized antenna arrays

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ICT Express 2024年第4期10卷 804-809页

作者： Liu, Dandan Liu, Sentao Wu, Wei Cheng, Yayun Gui, Liangqi College of Weapons Engineering Naval University of Engineering Wuhan 430030 China State Key Laboratory of Lunar and Planetary Sciences Macau University of Science and Technology Macau China School of Electronics and Information Engineering Harbin Institute of Technology Harbin 150001 China School of Cyber Science and Engineering Huazhong University of Science and Technology Wuhan 430074 China

Two circularly polarized antenna arrays, which reduce two redundant OAM modes, are proposed in this paper. One antenna array is composed of 8 right-handed circularly polarized (RHCP) antennas and radiates OAM mode l in x component, OAM mode l in y component and OAM mode (l+1) in z component. The other antenna array has 8 left-handed circularly polarized (LHCP) antennas and transmits OAM mode l in x component, OAM mode l in y component and OAM mode (l−1) in z component. The RHCP and LHCP antenna arrays produce OAM waves with fewer redundant OAM modes compared to the traditional single-direction antenna array. The feed excitations of the two circularly polarized antenna arrays have the same feeding system, which includes power dividers and phase shifters. The reflection coefficient parameters, radiation patterns and phase distributions are measured to display the radiated characteristics of the two proposed methods. Both the simulation and the experimental results demonstrate the effectiveness of the proposed methods. © 2024 Naval University of Engineering

关键词： circularly polarized antenna array E-field component Feeding system Fewer redundant OAM modes

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Highly Integrated In-Band Full-Duplex TRx antennas for mmWave V2X Communications

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IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY 2023年第5期72卷 6404-6411页

作者： Shin, Dongeun Lim, Woo-Hee Lee, Han Lim Chung Ang Univ Sch Elect & Elect Engn Seoul 06974 South Korea

A compact mmWave co-circularly polarized (CP) Tx and Rx (TRx) antenna array for in-band full-duplex (IBFDX) V2X communications is proposed. The proposed TRx antenna is based on highly integrated coplanar TRx antenna elements with high Tx-to-Rx isolation maintained in n257 5G NR band. The TRx antenna elements are coplanar patches with the same CP and concentrically integrated to form individual 2 x 2 array on the same substrate. The proposed mmWave IBFDX antenna is designed at 28 GHz with a multilayered printed circuit board (PCB) having sequetially rotated feed networks. Also, the designed antenna is fabricated with the size of 1.867 ?(0) x 1.867 ?(0) x 0.087 ?(0) including both CP feed network and ground plane. The measured 2 x 2 Tx impedance bandwith and peak gain at 28 GHz are 27.14% and 8.43 dBic, respectively. Also, the measured 2 x 2 Rx impedance bandwith and peak gain at 28 GHz are 28.57% and 6.17 dBic, respectively. Further, IBFDX operation of the proposed antenna is verified by n257 5G NR 256-QAM test signals with the maximum 400 MHz bandwidth.

关键词： antennas Millimeter wave communication antenna arrays antenna feeds Interference cancellation Reflection coefficient Full-duplex system circularly polarized antenna array high isolation antenna in-band full-duplex mmWave antenna array

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Compact and Highly Efficient Short-Range Radar for Advanced Driver Assistant Systems

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IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY 2023年第2期72卷 1629-1637页

作者： Lee, Jiho Lee, Hakmin Ko, Goo-Han Baek, Donghyun Lee, Han Lim Chung Ang Univ Sch Elect & Elect Engn Seoul 06974 South Korea

A compact and highly efficient 24 GHz circularly polarized (CP) short range radar (SRR) module is proposed. The proposed SRR is configured by highly integrated right-hand CP (RHCP) transmit (Tx) and left-hand CP (LHCP) receive (Rx) antenna arrays and a single 4-Tx and 4-Rx CMOS radar IC. The Tx RHCP and Rx LHCP antenna elements are coplanarly and concentrically arranged to form a 2 x 2 configuration for each Tx and Rx. The concentric integration can effectively increase the area efficiency while maintaining a high Tx-to-Rx isolation due to the opposite CP. Further, the radar IC is fabricated with TSMC 65 nm process and directly mounted on the back of the complete module. Each Tx and Rx channels of the IC are connected to each Tx and Rx array elements through multilayered feed network and bonding wires. Then, the SRR is operated as one Tx with 1 x 4 array and four Rx with individual antennas. Lastly, the complete CP SRR module is successfully verified at 24 GHz with a detection range from 1 m to 20 m.

关键词： Radar antennas Radar antennas Radar detection Integrated circuits antenna feeds Reflector antennas ADAS automotive radar circularly polarized antenna array radar TRx isolation short range radar

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Decoupling technology of interdigital lines applied to Beidou multi-antenna system 13

Decoupling technology of interdigital lines applied to Beido...

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13th International Conference on Microwave and Millimeter Wave Technology (ICMMT)

作者： Zou, Yin Pan, Jin Univ Elect Sci & Technol Coll Elect Sci & Engn Chengdu Peoples R China

ISBN: (纸本)9781728157337

For the band B3 of Beidou satellite, a dual single feed circularly polarized microstrip antenna array is designed, and a decoupling technology based on interdigital lines is proposed, which can effectively improve the isolation between the elements. At the same time, symmetrical rectangular slot is introduced into the radiation patch to enhance the impedance matching characteristics. The simulation results show that the center frequency of the antenna is 1.268GHz, the working bandwidth is 1.26-1.28GHz, and the gain is from 5.05dBi to 4.79dBi. The simulation results show that the isolation of the antenna is better than -15 dB, the maximum isolation enhancement is - 17.8 dB, and the edge to edge separation is only 0.08 lambda. The experimental results show that the structure has good application value.

关键词： Isolation interdigital lines circularly polarized antenna array Beidou satellite system

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