Compact Planar Multiband Antennas for Mobile Applications

Razali, Ahmad Rashidy; Abbosh, Amin; Antoniades, Marco A.

doi:10.5772/52053

Cited by 7 publications

(4 citation statements)

References 35 publications

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“…To safeguard against these conditions, a radome was employed to cover the antennas, capable of withstanding temperatures of up to 350 °C. These radomes were constructed from polyimide composites to ensure robust protection for the Vivaldi array [ 50 , 51 , 52 , 53 , 54 ].…”

Section: Lunar Antenna Typesmentioning

confidence: 99%

A Review of Lunar Communications and Antennas: Assessing Performance in the Context of Propagation and Radiation

Serria,

Gadhafi,

AlMaeeni

et al. 2023

Sensors

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Over the previous two decades, a notable array of space exploration missions have been initiated with the primary aim of facilitating the return of both humans and robots from Earth to the moon. The significance of these endeavors cannot be emphasized enough as numerous entities, both public and private, from across the globe have invested substantial resources into this pursuit. Researchers have committed their efforts to addressing the challenges linked to lunar communication. Even with all of these efforts, only a few of the many suggested designs for communication and antennas on the moon have been evaluated and compared. These designs have also not been shared with the scientific community. To bridge this gap in the existing body of knowledge, this paper conducts a thorough review of lunar surface communication and the diverse antenna designs employed in lunar communication systems. This paper provides a summary of the findings presented in lunar surface communication research while also outlining the assorted challenges that impact lunar communication. Apart from various antenna designs reported in this field, based on their intended usage, two additional classifications are introduced: (a) mission-based antennas—utilized in actual lunar missions—and (b) research-based antennas—employed solely for research purposes. Given the critical need to comprehend and predict lunar conditions and antenna behaviors within those conditions, this review holds immense significance. Its relevance is particularly pronounced in light of the numerous upcoming lunar missions that have been announced.

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Section: Lunar Antenna Typesmentioning

confidence: 99%

A Review of Lunar Communications and Antennas: Assessing Performance in the Context of Propagation and Radiation

Serria,

Gadhafi,

AlMaeeni

et al. 2023

Sensors

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“…a single resonant mode seems to form at about 1.95 GHz, as illustrated in Figure 3. Furthermore, the length of the semi-heptagonal monopole (L r1 ) responsible for the first resonance (f r1 = 1.95 GHz) can be calculated by (1).…”

Section: Design Evolutionmentioning

confidence: 99%

“…They can cover frequencies with a comparatively simple structure and are typically less expensive to manufacture than other alternatives. 1 Many designs for achieving multi-band functionality in a single antenna have been proposed in the most recent literature, by embedding a radiator with dual F-shaped apertures and a defected ground plane, 2 a quad band slot antenna for the WLAN, GPS and WiMAX, 3 fractal antenna with metamaterial and slot, 4 flexible pentangleloop radiator, 5 a radiator embedded with a spiral dual-arm strip structure and a tapered ground plane, 6 a nested rectangular loop antenna fed by coplanar waveguide feed, 7 a nested fractal hexagonal loop antenna with L shaped aperture on the ground plane, 8 a circular fractal antenna embedded with EC SRRs, 9 a defected ground structure (DGS) embedded within a patch antenna, 10 a square patch antenna embedded with sierpinski hexagonal gasket design, 11 a novel multiband fractal antenna combined with Sierpinski Carpet and Koch Snowflake, 12 a novel multiband microstrip patch antenna, 13 4 inverted L-shaped apertures in a circular patch antenna, 14 a nested hexagonal loop antenna embedded with DGS of dumb dell shape, 15 and a metamaterial dual band antenna. 16 Moreover, when these antennas [2][3][4][5][6][7][8][9][10][11][12][13][14][15][16] are manufactured, the operating bands are fixed, making it difficult to incorporate new services.…”

mentioning

confidence: 99%

Compact ACS‐fed frequency reconfigurable octa‐band antenna for wireless portable systems

Sreelakshmi

2023

Int J Numerical Modelling

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In this article, the design and analysis of a compact octa‐band antenna employing the PIN diode to realize frequency reconfigurable characteristics is presented. The presented antenna is backed by a partial ground plane and printed on top of a 1.53 mm thicker FR4 substrate. The antenna size is very compact (25 mm × 14 mm × 1.53 mm), and can be readily incorporated with many other RF front‐end circuits. The presented antenna consists of a semi‐heptagonal, semi‐hexagonal, inverted L‐shaped, and inverted Z‐shaped monopoles. Depending on the position of the lumped element switch, the presented antenna can operate in eight different frequency modes. The investigated antenna realizes Penta/Triple band characteristics by turning ON/OFF the PIN diode positioned between the inverted L‐shaped monopole and feedline. While in ON state, the investigated antenna covers five unique frequencies 1.82 GHz (DCS/5G NR n70), 2.43 GHz (Bluetooth/RFID), 3.75 GHz (LTE 42–43/5G NR n77/Wi‐MAX), 5.4 GHz (U‐NII‐2A & ‐2B), and 5.84 GHz (U‐NII‐3 & V2X) and in OFF state, the antenna covers three unique frequencies 1.95 GHz (PCS/UMTS/LTE 34–37), 2.59 GHz (LTE 2500 & WLAN 2.4 GHz), 4.71 GHz (5G NR n79 & WLAN 5GHz) for wireless applications. The investigated antenna exhibits excellent impedance bandwidths of 1.69–1.9 GHz (BW = 11.6%), 1.8–2.1 GHz (BW = 15.4%), 2.37–2.56 GHz (BW = 7.7%), 2.4–2.7 GHz (BW = 11.8%), 3.49–4.2 GHz (BW = 18.4%), 4.3–5.55 GHz (BW = 25.4%), 5.2–5.52 GHz (BW = 6%), and 5.78–5.9 GHz (BW = 5.5%) at 1.82/1.95/2.43/2.59/3.75/4.71/5.4, and 5.84 GHz, respectively. The measurements demonstrate that the designed antenna has omnidirectional radiation characteristics with 1.15–4.4 dBi gain. The proposed design's simulated and measured results are compared, and show good agreement.

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“…Advancements in various wireless technologies have led the researchers to think about and design antennas that can operate at multiple frequency bands. These multiband antennas are a vital part and play an important role for different multifunctional systems . They support various applications while maintaining acceptable performance in terms of bandwidth and suitable gain over the required band with omnidirectional radiation patterns.…”

Section: Introductionmentioning

confidence: 99%

Hexa‐band printed monopole antenna for wireless applications

Sethi

Vettikalladi

Fathallah

et al. 2017

Micro & Optical Tech Letters

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International audienceIn this letter, a hexa-band printed monopole antenna composed of various L-shape radiating elements is presented for various wireless applications. The antenna is designed to fully cover the CDMA (870-890 MHz), GSM (900-1800 MHz), DCS (1710-1880 MHz), PCS (1900 MHz), LTE-E/LTE-D (2300-2800 MHz), and WLAN (2.45/5.8 GHz) frequency bands. The proposed antenna achieves a gain of 1.8 dB, 3.17 dB, 3.23 dB, and 5.82 dB at respective bands. Fabrication of the antenna is completed on Rogers RT-5880 high frequency laminate with a finite ground plane having a rectangular slot on the other side of the substrate. The antenna is realized via standard printed circuit board (PCB) technology and its performance is validated by measurements in terms of s-parameters and radiation characteristics

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Compact Planar Multiband Antennas for Mobile Applications

Cited by 7 publications

References 35 publications

A Review of Lunar Communications and Antennas: Assessing Performance in the Context of Propagation and Radiation

A Review of Lunar Communications and Antennas: Assessing Performance in the Context of Propagation and Radiation

Compact ACS‐fed frequency reconfigurable octa‐band antenna for wireless portable systems

Hexa‐band printed monopole antenna for wireless applications

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