Self-Quadruplexing Circularly Polarized SIW Cavity-Backed Slot Antennas

Kumar, Kundan; Priya, Shruti; Dwari, Santanu; Mandal, Mrinal Kanti

doi:10.1109/tap.2020.2970101

Cited by 33 publications

(17 citation statements)

References 37 publications

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“…However, it is worth reiterating that the proposed four-port reconfigurable MIMO antenna offers the capability of self-multiplexing as well. According to the results, summarized in Table-3 and 4, the isolation levels attained in the designed antenna are better than the ones reported in(Boukarkar and Lin 2020;Kumar et al 2020;Mukherjee and Biswas 2016).…”

mentioning

confidence: 58%

“…A MIMO antenna with multiplexing ability makes it more useful especially in the presentday multi-standard communication scenario. It is well known that usage of multiple transceivers often leads to undesired higher-order effects like intermodulation distortion (Kumar et al 2020;Mukherjee and Biswas 2016). Multiplexer circuits such as diplexer, quadruplexer, etc.…”

Section: Introductionmentioning

confidence: 99%

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Tunable four-port MIMO/self-multiplexing THz graphene patch antenna with high isolation

2022

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A tunable terahertz four-port multiple-input-multiple-output (MIMO) graphene microstrip patch antenna with self-multiplexing ability is designed and numerically studied. The top layer of the four-port patch antenna, which is a symmetric cross-shaped graphene patch, is patterned using a crossslot. Insertion of this cross-slot improved the level of isolation to the order of 50−70 dB in the MIMO mode of operation. The frequency of impedance matching at each port of the designed antenna could be tuned independently by applying an electrostatic potential on the corresponding graphene patch enabling its usage as a MIMO self-diplexing and quadruplexing antenna. The MIMO performance parameters like envelope correlation coefficient, diversity gain, mean effective gain, etc. are found within the acceptable limits. An equivalent circuit model is presented to provide insight into the radiation mechanism and validate the results.

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mentioning

confidence: 58%

Section: Introductionmentioning

confidence: 99%

Tunable four-port MIMO/self-multiplexing THz graphene patch antenna with high isolation

2022

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“…As the circularly polarized (CP) wave excited by the CP antenna has the advantages of reducing multipath interferences and immune to faraday rotation in the ionosphere, there is a continuous need to design a broadband CP antenna that can cover multiple communication systems. [1][2][3][4][5][6][7][8][9][10] Many kinds of broadband CP antennas have been reported, such as the substrate integrated waveguide slot antenna, 4 dipole antenna, 5 printed monopole antenna, 8 and helical antenna. 10 Even though a CP antenna with a single radiator element has the advantage of small size, it usually cannot achieve a good axial beam radiation (main beam at boresight direction +z = 0 ) across the entire CP bandwidth.…”

Section: Introductionmentioning

confidence: 99%

A low‐profile ultrawideband circularly polarized slot antenna array based on artificial magnetic conductor array reflector

Zhang

Xing

et al. 2022

Int J RF Mic Comp-Aid Eng

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A broadband circularly polarized (CP) slot antenna unit that is composed of a sector‐shaped radiator and an irregular pentagon slot ground plane is initially investigated. The CP characteristics are realized based on unbalanced feeding and loading of irregular slot structure. To increase the gain and yield ultrawideband operation, a 2 × 2 antenna array with a sequential rotational feeding method is introduced. To further reduce the total profile of the proposed antenna array to 0.15λ0, an artificial magnetic conductor array reflector is loaded between the antenna array and the feeding network. The measured 10‐dB impedance bandwidth of the proposed antenna array was 82.6% (8.31–20.0 GHz), and its corresponding CP bandwidth was 65.4% (8.61–16.98 GHz), and the radiation efficiency of the antenna is also higher than 80%. Besides exhibiting very good axial beams across the wide CP bandwidth, a peak gain of up to 11.1 dBic is also achieved. Thus, it is suitable for X‐band and Ku‐band satellite communication applications.

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“…A multiplexer is generally used to enhance the isolation level of ports, but this requires a large area and increases the device design complexity [3,4]. To avoid this problem, recently the concept of diplexing antennas [7,8], triplexing antennas [9][10][11]14], and quadruplexing antennas [13] has been proposed, which does not require any extra circuitry to improve isolation. A self-isolated multiplex antenna requires a high gain and high front to back ratio (FTBR), which is satisfied by SIW antennas [5].…”

Section: Introductionmentioning

confidence: 99%

“…Compact planner antennas with four ports based on SIW cavity are illustrate in very few literary works. The most recent self-quadruplexing antenna using the SIW based cavity which provides circular polarization in four frequency bands has been proposed in [13]. To achieve isolation greater than 20 dB among the ports is still a challenge.…”

Section: Introductionmentioning

confidence: 99%

Compact Self-Quadruplexing Antenna Based on Siw Cavity-Backed With Enhanced Isolation

Singh¹,

Paras²

2021

PIER C

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A self-quadruplexing antenna based on substrate integrated waveguide (SIW) is presented. A slot is engraved on its top surface of the SIW cavity, which generates four different resonant frequencies (around 6.54, 7.64, 8.30, and 9.60 GHz) when it is excited by four 50 Ω microstrip feed lines. Also, each resonant frequency can be controlled independently. Due to a quarter mode (QM) cavity, the antenna size becomes compact. The measured results show that the isolation between any two ports is more than 32 dB, and the estimated gain is more than 7.8 dBi at the operating frequencies. The proposed design is simple to fabricate, compact, and easy to integrate with the planner circuits.

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Self-Quadruplexing Circularly Polarized SIW Cavity-Backed Slot Antennas

Cited by 33 publications

References 37 publications

Tunable four-port MIMO/self-multiplexing THz graphene patch antenna with high isolation

Tunable four-port MIMO/self-multiplexing THz graphene patch antenna with high isolation

A low‐profile ultrawideband circularly polarized slot antenna array based on artificial magnetic conductor array reflector

Compact Self-Quadruplexing Antenna Based on Siw Cavity-Backed With Enhanced Isolation

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