Analysis of Modal Excitation in Wideband Slot-Loaded Microstrip Patch Antenna Using Theory of Characteristic Modes

Khan, Mahrukh; Chowdhury, Masud H.

doi:10.1109/tap.2020.2989867

Cited by 21 publications

(16 citation statements)

References 21 publications

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“…Resonance occurs when an eigenvalue (λn) is zero. At this point, the radiated energy is the maximum value, while the stored energy is the minimum [27]. The n-th MWC can be determined by equation (17) with λn of the n-th characteristic eigenvalue equation:…”

Section: Characteristic Mode Analysis (Cma)mentioning

confidence: 99%

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Design and Analysis of Dual Polarized Broadband Microstrip Patch Antenna for 5G mmWave Antenna Module on FR4 Substrate

Kim

2021

IEEE Access

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This study presents a dual polarized broadband microstrip patch antenna for a 5G mmWave antenna module on an FR4 substrate. The proposed antenna was fabricated using a standard FR4 printed circuit board (PCB) process because of its low cost and ease of mass production. The electrical properties of the FR4 substrate in the 5G mmWave frequency band were also characterized. An air cavity structure was introduced to mitigate the high loss tangent of the FR4 substrate. Capacitive elements such as proximity Lprobe feedings and parasitic patches are used to improve the impedance bandwidth of the patch antenna. For the polarization diversity of the massive multiple-input multiple-output (MIMO) capability, the antenna radiator was designed with a symmetrical structure, and the relative position of the L-probes excites the orthogonal resonant modes to enable dual linear polarization. The operation principle of the proposed antenna was thoroughly analyzed by characteristic mode analysis (CMA). The measured bandwidth of a single antenna was 23.1 % (23 ~ 29 GHz) and the gain value was 5 dBi. The measured cross-polarization suppression ratio of single antenna was 15 ~ 20 dB. The measured gain value of 1×4 antenna array was 10 ~ 11 dBi and the cross-polarization suppression ratio was about 20 dB. The size of the proposed single antenna is 0.41λ0×0.41λ0×0.1λ0, and that of a 1×4 antenna array is 2.78λ0×0.41λ0×0.1λ0. The envelope correlation coefficient (ECC) was calculated and was lower than 0.02 in the 5G mmWave frequency band.INDEX TERMS 5G mmWave antenna, massive MIMO, FR4 PCB, Array antenna, Characteristic mode analysis, Broadband patch antenna, Dual polarized patch antenna.

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Section: Characteristic Mode Analysis (Cma)mentioning

confidence: 99%

“…where XL is the elements of matrix [XL]. From ( 24) and ( 25), the resonant frequency of the characteristic current can be shifted to a lower or higher frequency by controlling the reactive loadings [27], [28].…”

Section: Characteristic Mode Analysis (Cma)mentioning

confidence: 99%

Design and Analysis of Dual Polarized Broadband Microstrip Patch Antenna for 5G mmWave Antenna Module on FR4 Substrate

Kim

2021

IEEE Access

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“…Recently, TCM has been used in microstrip antenna designs [28]- [35]. For example, the eigenmodes of E-shaped patch and U-slot patch are depicted in [28]- [31]. The influence of the exciter on eigenmodes is analyzed in detail.…”

Section: Introductionmentioning

confidence: 99%

Characteristic Mode Analysis of Circular Microstrip Patch Antenna and Its Application to Pattern Diversity Design

Deng

Zhao

2022

IEEE Access

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In this paper, a highly-isolated microstrip patch antenna (MPA) is presented for pattern diversity applications. The physical insight of MPA is investigated without the influence of external exciter by using the theory of characteristic modes (TCMs). Shorting pins are added to manipulate the resonant frequencies of eigenmodes. TM 11 , TM 01 , and TM 02 modes are clearly tracked and identified. For the first time, all the three modes are simultaneously utilized to enhance the performances of MPA. To be specific, TM 01 and TM 02 modes have conical pattern, thus are combined to increase the bandwidth, while TM 11 mode has broadside pattern, and is used to provide pattern diversity. A two-port feed network, consisting of probe feed and aperture coupling, is designed to excite the three modes. The measured -10 dB bandwidth of the two ports is 720 MHz and 130 MHz. The simulated port isolation reaches 42 dB, and the measured value is higher than 27 dB. The proposed MPA has the advantages of clear operating principle, flexible mode tuning and high port isolation, thus is attractive in MIMO systems.INDEX TERMS Microstrip antenna, theory of characteristic mode, pattern diversity, wideband antenna.

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“…However, the gain of the tag after mounting on the water bottle is enough to give a read range of 3 m. Therefore, the design of tag antenna for water-based surfaces with desired features such as low-cost, long read range, inkjet printable structure, and robustness at mounting position is necessary for various applications like automatic refrigerators, and supply chain management. Recently, characteristic mode analysis (CMA) has been widely employed in antenna design and applications due to its versatility of providing physical insights regarding an antenna’s radiation phenomena 10 , 11 . As a result, CMA has also been used to design and tune UHF RFID tags for different surface environments 12 – 14 .…”

Section: Introductionmentioning

confidence: 99%

Making assembly line in supply chain robust and secure using UHF RFID

Sharif

Kumar

Ouyang

et al. 2021

Sci Rep

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This paper presents a block-chain enabled inkjet-printed ultrahigh frequency radiofrequency identification (UHF RFID) system for the supply chain management, traceability and authentication of hard to tag bottled consumer products containing fluids such as water, oil, juice, and wine. In this context, we propose a novel low-cost, compact inkjet-printed UHF RFID tag antenna design for liquid bottles, with 2.5 m read range improvement over existing designs along with robust performance on different liquid bottle products. The tag antenna is based on a nested slot-based configuration that achieves good impedance matching around high permittivity surfaces. The tag was designed and optimized using the characteristic mode analysis. Moreover, the proposed RFID tag was commercially tested for tagging and billing of liquid bottle products in a conveyer belt and smart refrigerator for automatic billing applications. With the help of block-chain based product tracking and a mobile application, we demonstrate a real-time, secure and smart supply chain process in which items can be monitored using the proposed RFID technology. We believe the standalone system presented in this paper can be deployed to create smart contracts that benefit both the suppliers and consumers through the development of trust. Furthermore, the proposed system will paves the way towards authentic and contact-less delivery of food, drinks and medicine in recent Corona virus pandemic.

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Analysis of Modal Excitation in Wideband Slot-Loaded Microstrip Patch Antenna Using Theory of Characteristic Modes

Cited by 21 publications

References 21 publications

Design and Analysis of Dual Polarized Broadband Microstrip Patch Antenna for 5G mmWave Antenna Module on FR4 Substrate

Design and Analysis of Dual Polarized Broadband Microstrip Patch Antenna for 5G mmWave Antenna Module on FR4 Substrate

Characteristic Mode Analysis of Circular Microstrip Patch Antenna and Its Application to Pattern Diversity Design

Making assembly line in supply chain robust and secure using UHF RFID

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