Epsilon‐shaped circularly polarized strip and slot‐loaded ultra‐wideband antenna for Ku‐band and K‐band

Jaiverdhan,; Singhal, Sarthak; Sharma, Mahendra Mohan; Yadav, R. P.

doi:10.1002/mmce.22142

Cited by 10 publications

(9 citation statements)

References 25 publications

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“…For quad‐band CP structures, the IBW is less than the proposed structure. Although the proposed structure has less ARBW than, 9‐11,13,14 those structures do not exhibit quad‐CP bands. Also, it is to be noted that as number of CP bands increases to four, there is a trend of ARBW being narrow 15‐17 .…”

Section: Resultsmentioning

confidence: 91%

“…A dual band CP antenna with wide impedance bandwidth (IBW) is presented in Reference 9 where CP is achieved by orthogonal orientation of metallic stubs and using the ground plane as a radiator and broadband is obtained by adding parasitic rectangular patches. An epsilon‐based stub loaded feedline with modified square slot antenna gives dual CP bands in a wide IBW region 10 . A tilted D shaped monopole radiator is also capable of having wide IBW with two CP bands 11 .…”

Section: Introductionmentioning

confidence: 99%

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A wideband compact antenna with quad‐circular polarized bands in its operating regions

Ghosh¹,

Islam

Das

2020

Int J RF Microw Comput Aided Eng

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This article presents the design of an offset CPW-fed slot antenna which exhibits a narrow impedance bandwidth (IBW; |S 11 | ≤ −10 dB) extending from 1.20 GHz to 1.45 GHz and another wide impedance bandwidth from 1.86 GHz to 8.4 GHz thus covering almost all the conventional operating frequencies. The antenna is loaded with semicircular and rectangular stubs and meandered microstrip lines to realize circular polarization at 1.35 GHz, 3.3 GHz, 4.9 GHz, and 7.5 GHz with axial ratio bandwidth (axial ratio ≤ 3 dB) of 19.25% (1.2-1.46 GHz), 4.24% (3.24-3.38 GHz), 4.1%(4.8-5 GHz), and 5.2% (7.3-7.69 GHz) respectively thus covering the GPS, WiMAX, WLAN, and Xband downlink satellite communication application bands. The mechanism of generation of CP is discussed using vector analysis of surface current density distribution. The gain is fairly constant in the wide IBW region with maximum fluctuation of 1.2 dB. The structure is compact with an overall layout area of 0.27λ × 0.27λ, where λ is the free-space wavelength corresponding to the lowest circular polarized (CP) frequency. A comparison of the proposed antenna with previously reported structures is performed with respect to impedance bandwidth, compactness, number of CP bands, LHCP to RHCP isolation and gain to comprehend the novelty of the proposed design. A prototype of the proposed antenna is fabricated and the measured results are in accord with the simulated results.

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Section: Resultsmentioning

confidence: 91%

Section: Introductionmentioning

confidence: 99%

A wideband compact antenna with quad‐circular polarized bands in its operating regions

Ghosh¹,

Islam

Das

2020

Int J RF Microw Comput Aided Eng

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“…A quarter-wave substrate integrated waveguide (SIW) cavity antenna having two-stub and defected ground plane structure (DGS) structure to achieve enhanced dual CP electromagnetic (EM) wave along with enhanced CP bandwidth for Ku-band applications has been presented by Kumar et al 22 A multiband microstrip antenna for ultra-wideband (UWB) communication application has been reported by Tang et al 23 A compact CP antenna for C-band application has been proposed by Ullah et al 24 A modified ground plane with square ring slot wideband CP antenna for C-and Kuband application has been reported by Patil et al 25 Dey et al 26 proposed a compact CP patch antenna for industrial, scientific, and medical (ISM) band. A stepped stub loaded, compact epsilon-shaped, dual ultra-wideband CP antenna for Ku-and K-band application has been reported by Jaiverdhan et al 27 The creation of elliptical slot inside the patch gives the wide bandwidth, reported by Angelopoulos et al 28 Highly efficient, wideband, cavity backed, low-cost printed circuit board (PCB)-laminated antenna array for Ku band is presented by Awida et al 29 Wang et al 30 achieved an improved gain and wide bandwidth in a microstrip antenna by creating a U-slot inside the patch. Borji et al 31 reported a high-gain, good efficient, low-cost, PCB-laminated, wave guide-fed antenna array for Ku-band application.…”

Section: Introductionmentioning

confidence: 97%

Design of a wideband right‐handed circularly polarized array of miniaturized mushroom‐shaped antennas for direct broadcast satellite application

Kola

Chatterjee

Patanvariya

2020

Micro & Optical Tech Letters

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In this study, a wideband right‐handed circularly polarized (RHCP) array of microstrip patch antennas, for direct broadcast satellite (DBS, 12.2‐12.7 GHz) services have been presented. The single element of the array is a two‐dimensional mushroom‐shaped fractal antenna of resonating frequency 12.49 GHz and an impedance bandwidth of 1.12 GHz. The proposed single element is designed by etching a pair of Minkowski square boxes in one of the two opposite sides of a regular octagon. Furthermore, a thin slot of length equal to one side of the regular octagon is placed in‐between the two Minkowski boxes, which results in the proposed mushroom‐shaped radiating element. The proposed four‐element linear array resonates at 12.47 GHz and gives an impedance bandwidth of 1.04 GHz. The feed network of the array is designed in such a manner to make the array structure very compact. The fabricated single element gives an RHCP gain of 5.25 dBic and its corresponding circular Polarization (CP) bandwidth of 200 MHz. The array gives an RHCP gain of 11.59 dBic and a CP bandwidth of 460 MHz. The measured CP bandwidth of the fabricated array prototype ensures 92% coverage of the entire DBS band with circularly polarized wave, and hence can be used for its related applications.

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“…The majority of printed-circuit UWB antenna designs are reported in the 3-10 GHz span, with very few designs persisting to cover higher frequencies such as the 3-30 GHz band, with promising applications in medical, air-bone intercept, radar, missile systems, and short-range tracking systems. The Ku band (12)(13)(14)(15)(16)(17)(18) is used for high resolution tracking and tracking the satellite within the bandwidths of approximately 12.87-14.43 GHz and the vehicular radar band (22)(23)(24)(25)(26)(27)(28)(29) [12]. As wireless system tools develop and use higher frequency ranges to provide higher data transfer, a UWB antenna with a frequency range far beyond the FCC-authorized band is required to monitor and enforce various standard compliances, such as EIRP, immunity tests, and interferences.…”

Section: Introductionmentioning

confidence: 99%

A Compact Novel SE-DGS Tapered-Fed Notched UWB Antenna Integrated with Ku/K band for Breast Cancer Detection

Ponnapalli

Karthikeyan

Narayana³

et al. 2022

Preprint

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A compact and novel semi-elliptical defected ground structure (SE-DGS) tapered microstrip line fed UWB antenna with band notched characteristics integrated with Ku and K band applications is proposed. The proposed SE-DGS UWB antenna is printed on a compact size of (15×18 mm2) and has an impedance bandwidth of 4.11-29.77 GHz, a fractional bandwidth of 152%, and both the down link of X- and ITU-8 bands are completely notched over a span of 6.86-9.09 GHz using a single C-structured reflector. The proposed antenna has a fluctuating gain of 1.7–4.82 dBi except for the gain at the notched band frequency, which is -12.25 dBi. The proposed antenna has a high radiation efficiency of 96.23%, stable radiation patterns over the UWB range, and a high rejection capability of the notched band, which is noticed from the high value of VSWR of 23.15, making it a potential candidate for UWB, Ku, and K band wireless applications with effectively suppressed downlink of X and ITU-8 bands. The developed antenna design simulates breast cancer tissue detection by comparing S21 outcomes, current densities, and specific absorption rates with and without tumour scenarios. These results suggest that the proposed radiator and system detect breast tumours efficiently.

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Epsilon‐shaped circularly polarized strip and slot‐loaded ultra‐wideband antenna for Ku‐band and K‐band

Cited by 10 publications

References 25 publications

A wideband compact antenna with quad‐circular polarized bands in its operating regions

A wideband compact antenna with quad‐circular polarized bands in its operating regions

Design of a wideband right‐handed circularly polarized array of miniaturized mushroom‐shaped antennas for direct broadcast satellite application

A Compact Novel SE-DGS Tapered-Fed Notched UWB Antenna Integrated with Ku/K band for Breast Cancer Detection

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