T-Shaped Tri-Band Antenna Based on Characteristic Mode Analysis for Satellite Applications

Lohar, Fateh Lal; Sharma, Indra Bhooshan; Katewa, Virender; Sharma, and Mahendra Mohan

doi:10.2528/pierc21072203

Cited by 9 publications

(7 citation statements)

References 30 publications

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“…In this section, an initial patch antenna is designed on FR4 substrate and initial theoretical expressions are calculated by using cavity model theory [13]. The cavity model method is an approximate model, which does not radiate any power from the structure.…”

Section: Analytical Parameters Calculation For Initial Designmentioning

confidence: 99%

“…The structure of electromagnetic properties is the surface current modes. To solve the characteristic modes, use the following Eigen value equation [13][14][15][16].…”

Section: Characteristic Modes Analysis Of Initial Designmentioning

confidence: 99%

“…CCL with a lower value is better. To achieve superior MIMO diversity performance, the CCL value can be calculated using equation (13), and it must be less than 0.1(bits/s/Hz) [21]. Figure 24 illustrates the calculated channel capacity loss for the full operating band, which is significantly below 0.1(bits/s/Hz).…”

Section: Diversity Gain (Dg)mentioning

confidence: 99%

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Dual-Polarized MIMO Antenna System for 5G Indoor base Station Applications

Surendra

khan

2022

Preprint

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In this paper a dual-polarized multiple-input multiple-output (MIMO) antenna system for fifth-generation (5G) indoor base station applications resonating at 3.5 GHz has been proposed. The initial design is a conventional patch antenna, and characteristic mode analysis (CMA) is used to determine its dual-polarized characteristics. Both orthogonal modes are excited using the full-wave approach with a 50 Ohm dual-port coaxial feed line, and operated at 3.5 GHz. The non-contact feed method is used to improve isolation between ports. Inserting an air gap between the antenna substrate and the ground metal sheet improves gain and bandwidth. Further 2x2 MIMO antenna with 8-port is designed on low cost FR4 dielectric material with 120*120*5.17 mm3 compact volume. The MIMO antenna’s performance are examined by simulation and experimental. For the proposed MIMO, high isolation, high efficiency, and appropriate gain-level characteristics have been obtained. Furthermore, throughout the whole band of interest, the calculated total active reflection coefficient (TARC) and envelope correlation coefficient (ECC) of the antenna components are very low, indicating that the proposed multi-antenna systems are capable of enormous MIMO and diversity applications. Furthermore, the antenna avoids the use of complex feeding mechanisms such as baluns or directional couplers.

show abstract

Section: Analytical Parameters Calculation For Initial Designmentioning

confidence: 99%

“…The structure of electromagnetic properties is the surface current modes. To solve the characteristic modes, use the following Eigen value equation [13][14][15][16].…”

Section: Characteristic Modes Analysis Of Initial Designmentioning

confidence: 99%

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Dual-Polarized MIMO Antenna System for 5G Indoor base Station Applications

Surendra

khan

2022

Preprint

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“…As a result, designers have resorted to incorporating parasitic slots or strips of various forms in the radiating element or ground plane structure of antenna systems in order to maintain the antenna compact. Furthermore, many UWB applications necessitate the use of mutually non-interacting notch bands [3,5,[8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Design and Analysis of Quad-Band Notch Characteristics Uwb Antenna Using SLR Circuits

PARTHIBAN¹,

ISMAIL²

2022

PIER C

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In this paper, a quad-band notch characteristics ultra-wideband (UWB) antenna for Wi-MAX, L-WLAN, U-WLAN, and C-band applications is presented. The initial UWB antenna bandwidth is achieved in the 2 to 12.5 GHz frequency band by using the partial ground method. Spiral lossy resonator (SLR) slots are loaded into the UWB ground structure to achieve quad-band notch characteristics. Each SLRS circuit is accountable for a single notch characteristic by losing EM power at the notch frequency. A quad-band notch is accomplished in this antenna for WiMAX (3.24 to 3.56 GHz), L-WLAN (4.76 to 5.34 GHz), U-WLAN (5.58 to 5.91 GHz), and C-band (7.37 to 7.71 GHz) by loading four SLR slots circuits into the UWB antenna. The proposed antenna is engraved on a Rogers RO4003C (3.55) substrate having an overall volume of 50 * 40 * 1.524 mm 3 . The proposed antenna's performance has been verified through simulation and experiments.

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“…As an important part of satellite navigation systems, the performance of antennas directly affects the communication quality of a whole navigation system [1][2][3][4]. 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].…”

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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T-Shaped Tri-Band Antenna Based on Characteristic Mode Analysis for Satellite Applications

Cited by 9 publications

References 30 publications

Dual-Polarized MIMO Antenna System for 5G Indoor base Station Applications

Dual-Polarized MIMO Antenna System for 5G Indoor base Station Applications

Design and Analysis of Quad-Band Notch Characteristics Uwb Antenna Using SLR Circuits

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

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