Planar Quasi-Isotropic Magnetic Dipole Antenna Using Fractional-Order Circular Sector Cavity Resonant Mode

Li, Qing; Lu, Wen‐Jun; Wang, Shengguang; Li, Zhu

doi:10.1109/access.2017.2696988

Cited by 53 publications

(33 citation statements)

References 39 publications

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“…The Wilkinson power dividers are designed on the RF-35 substrate. The resonance mode is maintained even though the substrate integrated waveguide becomes a half-mode substrate integrated waveguide (HMSIW) or a quarter-mode substrate integrated waveguide (QMSIW) [18][19][20][21][22][23][24][25][26][27]. Fig.…”

Section: System Design and Implementmentioning

confidence: 99%

Quasi-hemispherical region scanning phased array system using triangular SIW antenna elements with short ends

Cho

Ahn

et al. 2020

IEICE Electron. Express

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A phased array system with quasi-hemispherical region scanning performance is proposed. The proposed system is implemented using triangular substrate integrated waveguide (SIW) elements with short ends, which have a quasi-hemispherical beam pattern. Shorted vias at the vertex and side of the triangular patch were made to act as SIW antennas, generating magnetic currents characterized by radiating to a quasi-hemisphere pattern. The measured results show that the prototype planar phased array has scanning ranges of about 160 • in both horizontal and vertical planes, and about 170 • in both two diagonal direction planes, with 5 dB gain fluctuation. key words: wide-angle scanning, planar arrays, phased arrays, quasihemispherical beam pattern Classification: Microwave and millimeter-wave devices, circuits, and modules This article has been accepted and published on J-STAGE in advance of copyediting. Content is final as presented.

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Section: System Design and Implementmentioning

confidence: 99%

Quasi-hemispherical region scanning phased array system using triangular SIW antenna elements with short ends

Cho

Ahn

et al. 2020

IEICE Electron. Express

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“…Therefore, the operating principle and design approach have been numerically revealed and evidently validated. To eliminate the possible spurious radiations caused by the unbalanced feeding cables, a pair of quarter‐wavelength, cylindrical sleeve chokes is used . The length and radius of the sleeve choke are 31 mm and 4 mm, respectively.…”

Section: Numerical and Experimental Validationsmentioning

confidence: 99%

Dual circularly polarized loop antenna using a pair of resonant even‐modes

Yuan

et al. 2019

Int J RF Microw Comput Aided Eng

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Conceptual design of dual circularly polarized (CP) square loop antennas using a pair of resonant even-modes for wireless sensor application is presented. A pair of even-modes is simultaneously excited within a single, nonuniform square loop element and employed to realize a dual circular polarization characteristic. When the natural boundary conditions of the even-modes and the feed lines are matched, respectively, a bidirectional dual CP loop antenna can be attained at first. Then, a unidirectional dual CP loop antenna is designed by introducing a simple metallic reflector. Both bidirectional and unidirectional designs exhibit dual CP performance with available operation bandwidth of 10.0% and 8.5%. The design approach is expected to get applications in dual CP antenna designs for wireless sensor systems. K E Y W O R D S dual circularly polarized antennas, even-mode resonant, square loop antenna 1 | INTRODUCTIONWireless sensors have been widely applied in wearable human activity recognition, 1 embedded sensing network, 2,3 home automation, 4 and so forth. The reliability of wireless signal transmission/reception in multipath fading, wireless sensing environments is always a critical challenge. CP antennas have been successfully employed to overcome the multipath effect and random polarization mismatching in wireless communications 5 and wearable sensing systems. 6 Although distributed CP diversity systems can be implemented by using a pair of CP antennas with opposite sensing, 6 dual CP antennas 7,8 would provide a co-location diversity transmitting/receiving functionality, and thus reduce the size, complexity and cost of wireless sensor systems. In the past few years, a series of dual CP antennas have been developed. These designs can be classified into three distinctive types according to their operation principles. The first type is the symmetrical perturbation 9,10 technique with enhanced compensation network 11 : Several symmetrical parasitic elements are stacked to the primary patch radiator, thus both LHCP and RHCP can be excited simultaneously. The second one is to use an additional 90 branch-line directional coupler. By connecting two orthogonal linearly polarized (LP) elements to the outputs of such couplers, RHCP and LHCP can be attained at the two mutually isolated inputs. [12][13][14][15][16] The third one is to enhance coupling with phase shifting network, 17-21 which can be recognized as the improved version of the two previous techniques.Basically, these techniques share one common characteristic that dual CP characteristic should be implemented by simultaneously exciting two orthogonal LP components with equal-magnitude and in/out phase-quadrature. Owing to introducing the techniques of symmetrical perturbations, 90 branch-line directional coupler, and phase shift networks, the resultant antennas are inevitably with high structural complexities having quite numerous parameters. As promising dual CP antenna designs with relatively simple structures, loop antennas have drawn more and more attenti...

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“…Based on the fractional‐order modes within a circular sector radiator and the generalized multi‐resonant dipole theory, various wideband, multi‐resonant patch antennas can be designed. To realize wideband, multi‐resonant microstrip patch antennas, the undesired resonant modes between two usable modes should be sufficiently suppressed, or tuned out of the desired bands formed by the usable modes at first.…”

Section: Design Approachesmentioning

confidence: 99%

On the multi‐resonant antennas: Theory, history, and new development

2019

Int J RF Microw Comput Aided Eng

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A survey of multi‐resonant antennas is comprehensively presented, with emphasis on theoretical framework, design approaches, and practical examples. This article begins with a brief history of the multi‐resonant dipole theory, and then concentrates on the design approaches that have been developed to typical, basic antenna elements, for example, electric dipole antenna, slotline antenna, loop antenna, complementary dipole antenna, and microstrip patch antenna. Design examples for different practical applications are then raised. In final, the multi‐resonant antenna design approach is summarized and compared to some relevant antenna design techniques.

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Planar Quasi-Isotropic Magnetic Dipole Antenna Using Fractional-Order Circular Sector Cavity Resonant Mode

Cited by 53 publications

References 39 publications

Quasi-hemispherical region scanning phased array system using triangular SIW antenna elements with short ends

Quasi-hemispherical region scanning phased array system using triangular SIW antenna elements with short ends

Dual circularly polarized loop antenna using a pair of resonant even‐modes

On the multi‐resonant antennas: Theory, history, and new development

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