Conical Linear Spiral Antenna for Tracking, Telemetry and Command of Low Earth Orbit Satellites

Hussein, Khalid Fawzy Ahmed

doi:10.2528/pierc12031610

Cited by 17 publications

(5 citation statements)

References 7 publications

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“…Moreover, due to size limitations, it is recommended that a mobile handset antenna is able to operate efficiently at multiple frequency bands in the mm-wave spectrum to support the applications of the forthcoming mobile generations [4,5]. In various situations, the antenna structure may be complicated as those having a three-dimensional shape to operate efficiently in a single frequency band and to perform some function in special applications [6,7] and may include layers with high electromagnetic absorbance [8] to produce radiation patterns of the desired shape. However, for mobile handsets, due to size and weight limitations, it is preferable to have a planar antenna of simple-structure, multi-band operation, and omnidirectional radiation patterns.…”

Section: Introductionmentioning

confidence: 99%

Quad-band Compact MIMO Antennas for 5G Mobile Communications

Farahat

Hussein

2023

ACES Journal

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Three types of quad-band millimetric-wave two-port MIMO antenna systems are proposed for the forthcoming generations of mobile handsets. A novel printed antenna is introduced to be the single element of the proposed MIMO antennas. It is shown that the proposed MIMO antennas are capable of producing both spatial and polarization diversities that enhance the performance of mobile communications. Two configurations of co-polarized two-port MIMO antennas are proposed to provide spatial diversity, whereas a cross-polarized two-port MIMO antenna is proposed to produce polarization diversity. It is shown that all the proposed MIMO antennas can operate efficiently over the four frequency bands centered at 28, 43, 52, and 57 GHz. Prototypes are fabricated for the proposed MIMO antennas for the sake of experimental evaluation. The measurements agree with the simulation results showing high performance of the proposed types of MIMO antennas including the impedance matching, radiation patterns, envelop correlation coefficient, and diversity gain. Both the experimental and simulation results show that the achieved bandwidths, at the four operational frequency bands, are 0.6, 0.6, 1.8, and 1.5 GHz, respectively. Also, the radiation efficiencies calculated at the four operational frequencies are 86.5%, 87.5%, 89.2%, and 90.0%, respectively. The dimensions and the results concerning the performance of the proposed MIMO antennas are compared to other designs for MIMO antennas available in some recently published work.

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Section: Introductionmentioning

confidence: 99%

Quad-band Compact MIMO Antennas for 5G Mobile Communications

Farahat

Hussein

2023

ACES Journal

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show abstract

“…The antenna structure may be complicated as those having three-dimensional shape to operate efficiently in a single frequency band and to perform some function in special applications [6], [7] and may include layers with high electromagnetic absorbance [8] to produce radiation patterns of desired shape. However, for mobile handsets, due to size and weight limitations, it is preferable to have planar antenna of simple-structure, multi-band operation and omnidirectional radiation patterns.…”

Section: Introductionmentioning

confidence: 99%

Design Methodology of Multiband Printed Antennas for Future Generations of Mobile Handsets

2022

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The present paper introduces a design methodology to extend the operation of a microstrip patch antenna to operate efficiently at multiple higher-order resonances. This method depends on the geometrical modification of the antenna structure by adding well-designed inductively-loaded and capacitively-coupled elements to the primary patch so that it can efficiently radiate at the desired higher frequency bands. It is explained quantitatively how to use the geometrical parameters of the inductively and capacitively coupled elements for accurate tuning of the multiple resonant frequencies of the antenna. The proposed method is applied to modify a primary hexagonal patch antenna (designed to principally radiate at 28 GHz as its first-order resonance) so as to operate at additional higher frequency bands around 43, 52, and 57 GHz. Also, an alternative design is provided for a quad-band printed antenna of composite patch structure that operates in the same millimetric-wave (mm-wave) bands, 28, 43, 52, and 57 GHz with high radiation efficiency, excellent impedance matching, and satisfactory values of the antenna gain. The corresponding frequency bands are, respectively, (27.7-28.3 GHz), (42.7-43.3 GHz), (51.2-53.0 GHz), and (55.7-57.5 GHz). The dimensions of the area occupied by the primary patch and the parasitic elements are 5.2 × 3.3 mm . The two antennas are fabricated for experimental assessment of their performance including the impedance matching and radiation patterns. It is shown that the experimental measurements come in agreement with the simulation results over all the four operational mm-wave frequency bands. One of the advantages of the proposed method is that it can be applied to patch antennas of arbitrary shapes and is not restricted to hexagonal patch antennas. Furthermore, this method is not restricted by extending the operation of the antenna to radiate at four frequency bands. It is capable of adding any desired number of frequency bands so that the antenna can operate at five or, even, more bands.INDEX TERMS MIMO, multi-band antenna, Patch antenna, 5G mobile communications

show abstract

“…Moreover, due to size limitations, it is recommended that a mobile handset antenna is able to operate efficiently at multiple frequency bands in the mmwave spectrum to support the applications of the forthcoming mobile generations [4,5]. In the various situations, the antenna structure may be complicated as those having three-dimensional shape to operate efficiently in a single frequency band and to perform some function in special applications [6,7] and may include layers with high electromagnetic absorbance [8] to produce radiation patterns of desired shape. However, for mobile handsets, due to size and weight limitations, it is preferable to have planar antenna of simple-structure, multi-band operation and omnidirectional radiation patterns.…”

Section: Introductionmentioning

confidence: 99%

Millimetric-Wave Quad-Band Mimo Antennas for Future Generations of Mobile Communications

Abo-Elhassan¹,

Farahat²,

Hussein³

2022

PIER B

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Two types of quad-band millimetric-wave four-port MIMO antenna systems are proposed for the forthcoming generations of mobile handsets. A novel printed antenna is introduced to be the single-element of the MIMO antenna system. It is shown that the proposed MIMO antennas are capable to produce both spatial and polarization diversities that enhance the performance of mobile communications. A co-polarized four-port MIMO antenna is proposed to provide spatial diversity whereas another cross-polarized four-port MIMO antenna is proposed to produce both spatial and polarization diversities. It is shown that the two types of MIMO antennas can operate efficiently over the four frequency bands centered at 28, 43, 52, and 57 GHz. Prototypes are fabricated for the proposed MIMO antennas for the sake of experimental evaluation. Both the experimental and simulated results show that the achieved bandwidths, at the four operational frequency bands, are 0.6, 0.6, 1.8, and 1.5 GHz, respectively. Also, the radiation efficiencies calculated at the four operational frequencies are 86.5%, 87.5%, 89.2%, and 90.0%, respectively. The dimensions and the results concerning the performance of the proposed MIMO antennas are compared to those of other designs for MIMO antennas available in some recently published work.

show abstract

Conical Linear Spiral Antenna for Tracking, Telemetry and Command of Low Earth Orbit Satellites

Cited by 17 publications

References 7 publications

Quad-band Compact MIMO Antennas for 5G Mobile Communications

Quad-band Compact MIMO Antennas for 5G Mobile Communications

Design Methodology of Multiband Printed Antennas for Future Generations of Mobile Handsets

Millimetric-Wave Quad-Band Mimo Antennas for Future Generations of Mobile Communications

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