Dual Band Circularly Polarized Modified Ψ-Shape Microstrip Antenna

Deshmukh, Amit A.; Odhekar, Anuja A.

doi:10.2528/pierc21062803

Cited by 7 publications

(7 citation statements)

References 38 publications

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“…The design reported in [28] offers smaller impedance and AR BW, whereas fractal slot cut geometry on the ground plane is complex in designing and offers smaller AR BW [30]. The resonant slot cut CP MSAs reported in [31][32][33][34][35][36] offers AR BW in the range of 4-5%. However, it lies inside the impedance BW that does not create separate wideband and CP regions.…”

Section: Design Methodology For Modified E-shape and Half E-shape Msasmentioning

confidence: 99%

“…The dual band CP design of modified E-shape MSA is reported in [34], whereas a compact CP design using a single rectangular slot inside the RMSA is reported in [35]. However, in [31][32][33]35], an explanation about the functioning of slot cut antenna in terms of orthogonal resonant modes present and subsequent design methodology is not given, whereas the design reported in [34] requires larger patch size. The dual band CP design using slot cut stacked patches as reported in [36] requires higher antenna volume.…”

Section: Introductionmentioning

confidence: 99%

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Wideband and Circularly Polarized Designs of Modified E–shape Microstrip Antennas for GSM and GPS Applications

Chavali,

Deshmukh

2022

PIER C

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Variations of modified E-shape microstrip antennas are proposed which realize wideband and circularly polarized responses inside the same impedance bandwidth but in separate frequency regions. The offset pair of slots in E-shape patch tunes the spacing in between TM 02 , TM 10 , and TM 11 mode frequencies, and for the design in 900 MHz frequency band, it yields the total impedance bandwidth of 34.15%, in which circularly polarized bandwidth of 4.75% is present towards the higher frequency region. In comparison with the wideband E-shape or its circularly polarized variation, the proposed configurations yield larger total impedance and same axial ratio bandwidth, but without overlapping bands for the wideband and circularly polarized regions. A compact half E-shape microstrip antenna is proposed, which yields total impedance bandwidth of 38.8%, with a circularly polarized bandwidth of 5.3%, present towards the higher frequency region. Further, the wideband E-shape variations are presented on a thinner substrate by using a bow-tie shape ground plane profile. Against the conventional ground plane design, it offers more than 12% increase in the bandwidth for 0.03λ g reduction in the substrate thickness. Thus, as against the reported E-shape variations, the proposed study presents a new design feature of traditional E-shape patch that provides separate regions for the wideband and circularly polarized responses, occupying the same impedance bandwidth.

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Section: Design Methodology For Modified E-shape and Half E-shape Msasmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Wideband and Circularly Polarized Designs of Modified E–shape Microstrip Antennas for GSM and GPS Applications

Chavali,

Deshmukh

2022

PIER C

Self Cite

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“…Using slots, a ψ like microstrip antenna achieves dual band CP operation in. 2 A bat like microstrip antenna shows dual band circular polarization for X and Ku band applications in. 3 Dual band CP operation has been obtained by ring slots in.…”

Section: Introductionmentioning

confidence: 99%

“…It uses four C shaped slots and a single slot to achieve CP characteristics in two bands. Using slots, a ψ like microstrip antenna achieves dual band CP operation in 2 . A bat like microstrip antenna shows dual band circular polarization for X and Ku band applications in 3 .…”

Section: Introductionmentioning

confidence: 99%

A single feed circularly polarized dual band microstrip monopole antenna for wireless applications

Bala,

Bag,

Sarkar

et al. 2024

Micro & Optical Tech Letters

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The paper proposes a circularly polarized dual band single feed microstrip monopole antenna. The proposed antenna consists of a radiating patch, a shrink ground plane, and a 50 Ω microstrip transmission line feed. The radiating patch is a combination of three modified metallic strips, a modified rectangular strip and a semicircular strip. The ground plane consists of two modified open ended slots. The substrate area of the antenna is only 40 mm × 42 mm × 1.6 mm. The antenna has been designed by HFSS simulation software and after getting simulated results the antenna has been fabricated to verify its results. The antenna provides measured bandwidths (−10 dB impedance bandwidth) of 600 MHz (2.2–2.8 GHz) in the lower band and 2.1 GHz (7.5–9.6 GHz) in the higher band. The measured results show its 3 dB axial ratio bandwidth of 120 MHz (2.2–2.32 GHz) for lower band and 1.4 GHz (7.2–8.6) GHz for the upper band. The high measured peak gain of 8 dBi has been obtained from the proposed antenna. The lower band is useful for WiMAX application and upper band is useful for C band application. The desired radiation patterns (RHCP and LHCP) have been obtained from the proposed antenna.

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“…In order to improve signal-to-noise ratio, the antenna of a satellite navigation system needs circularly polarized waves and a wider beam width with a higher low-elevation gain [5]. In order to solve the above problems, researchers have done a lot of work [6][7][8][9][10][11]. In [12], a compact dual-band and dual-circular polarization stacked patch antenna is designed.…”

Section: Introductionmentioning

confidence: 99%

A Dual-Band Circularly Polarized Antenna With ``X'' Parasitic Structures

Wang¹,

Sun²

2022

PIER Letters

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This paper proposes a dual-band circularly polarized antenna with "X" parasitic structures applied in the Beidou satellite navigation system. The innovation of this paper is to introduce the radome with "X" parasitic structures to broaden the beam width of the L-band and to improve the low-elevation gain of the antenna. Furthermore, high dielectric constant materials are used to realize the miniaturization and embedded application of the antenna. The measured results show that the VSWR of the L-band is 1.09 at 1616 MHz, and the VSWR bandwidth (VSWR < 2) is 45 MHz (1589 MHz-1634 MHz). The VSWR of S-band antenna is 1.24 at 2492 MHz, and the VSWR bandwidth (VSWR < 2) is 54 MHz (2471 MHz-2525 MHz). By adding the designed radome, the 20 degree elevation gain of the Lband is increased by 3.755 dBic The measured results show that the gain variation at 20-degree elevations of the antenna at 1616 MHz and 2492 MHz are 4.981 dBic and 3.7 dBic, respectively. Moreover, the beam widths of the antenna at 1616 MHz and 2492 MHz are 130 degrees and 104 degrees, respectively. The antenna has an improved gain and a good roundness at low elevation angles, thus providing a favorable choice for navigation antenna solutions.

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Dual Band Circularly Polarized Modified Ψ-Shape Microstrip Antenna

Cited by 7 publications

References 38 publications

Wideband and Circularly Polarized Designs of Modified E–shape Microstrip Antennas for GSM and GPS Applications

Wideband and Circularly Polarized Designs of Modified E–shape Microstrip Antennas for GSM and GPS Applications

A single feed circularly polarized dual band microstrip monopole antenna for wireless applications

A Dual-Band Circularly Polarized Antenna With ``X'' Parasitic Structures

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