A Highly Bendable Log-Periodic Array Antenna for Flexible Electronics

Abutarboush, Hattan F.; Siddiqui, Omar; Wali, Muhammad R.; Tahir, Farooq A.

doi:10.2528/pierm20071402

Cited by 4 publications

(1 citation statement)

References 30 publications

(57 reference statements)

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“…For RF devices, wideband antennas are characterized by their faster transmission speed, superior anti-jamming capabilities and enhanced resistance to signal fading than narrowband antennas [27,28]. As one of the most widely used antennas, LPDAs are very popular due to their simplicity of design and implementation [29,30]. In addition, the end-fire radiation characteristic of LPDAs is important for designing the directional pattern reconfigurable antennas.…”

Section: Step I: Planar Lpda Designmentioning

confidence: 99%

Pattern reconfigurable antenna with specified main lobe deflection and stable bandwidth by using bistable composite laminates

Zhang,

Tong,

et al. 2024

Smart Mater. Struct.

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Pattern reconfiguration of antennas has become a very important measure to improve the signal gain and working bandwidth by manipulating beam direction. Developing rational methods to find the reconfigurable structure is a key problem. In this paper, a collaborative optimization method is proposed to comprehensively consider both the geometric parameters of the bistable substrate and the size of the radiation patch. This method enables the design of a pattern reconfigurable antenna with specified main lobe deflection and stable bandwidth. Specifically, by using a two-step process, the log-periodic dipole antenna (LPDA) is conformally mapped from the planar substrate to the bistable substrate. Further investigation reveals that the main lobe deflection angle and bandwidth stability are influenced by the geometric parameters of the bistable substrate and the size of radiation dipoles, respectively. Thus, these parameters are selected as design variables for solving the proposed collaborative optimization model. The transformation between two stable configurations enables the proposed LPDA to deflect the main lobe of the H-plane pattern by 30° while maintaining consistency in the E-plane patterns. Importantly, the resonant frequencies remain unaffected and the bandwidth does not decrease during the pattern reconfiguration. Notably, the pattern reconfigurable mechanism is rooted in that the transformation between the two stable configurations alters the number and position of the dipoles in the radiation region and their current path, thereby changing the radiation direction of electromagnetic waves. The proposed collaborative optimization method has a potential application for other types of antennas and offers opportunities for various applications in the field of wireless communication.

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Section: Step I: Planar Lpda Designmentioning

confidence: 99%

Pattern reconfigurable antenna with specified main lobe deflection and stable bandwidth by using bistable composite laminates

Zhang,

Tong,

et al. 2024

Smart Mater. Struct.

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A Novel Compact High Gain Wide-Band Log Periodic Dipole Array Antenna for Wireless Communication Systems

Ibrahim¹,

Ahmed

Abdel-Kader

et al. 2022

J Infrared Milli Terahz Waves

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This paper implies a prototype for a broad-band log periodic dipole antenna (LPDA) with dimensions of 20 × 40 × 0.508 mm3 equipped with directors. The LPDA is based on Roger’s RT5880 with εr = 2.2. The 4-arms with alternative stubs constitute the LPDA, which is evenly spaced on both lines. At the substrate’s back, the 50Ω main feeder line is placed on partial ground. The directors are also incorporated and studied in a regular matrix at a predetermined distance to improve gain, further reduce side lobes, and widen the frequency band. The performance of the antenna covers a wide spectrum of millimeter waves ranging from 26 up to 44 GHz. The realized gain for the antenna is 8.97, 11.96, 13.96, and 14.29 dB at 28 GHz, 35 GHz, 38 GHz, and 43 GHz, respectively. The total gain is 14.29 dB as a peak gain. The antenna was designed and tested for 5G communication applications in autonomous vehicles, and the design cost for the antenna is low in comparison to dielectric lenses. The model exhibits symmetrical radiation patterns for the antenna range. The results of the simulations and the testing of the implemented antenna elements coincide quite well. The proposed design outperforms earlier work in this field.

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An optimized design for motivated broadband LPDA antenna

Ibrahim,

Ahmed,

Abdelkader

et al. 2024

Sci Rep

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This paper presents a super wideband and high-gain log periodic dipole array (LPDA) antenna. The overall structure of the antenna was constructed using microwave studio computer simulation technology. The optimal sizes of the planned antenna are 39 × 10× 0.254 mm3. The engineered antenna arrangement is implemented on an RT5880 substrate as a dielectric medium. The LPDA is arranged in four arms that are equally spaced on both lines. The main 50Ω feeder line is partially grounded at the back of the substrate. A combination of circular director units is being studied and tuned in a regular pattern at a predefined distance from the antenna. An improvement in gain of 3 dBi is the response of the director units. The Conformist LPDA is adjusted to achieve a wide range of millimeter wave bands ranging from 40 to over 70 GHz. The antenna resonates at 60 GHz, where the maximum realized gain of 14.97 dBi is attained. The antenna was tested for utilization in the V-band involving wireless personal area network (WPAN) applications recommended by IEEE 802.11ad and IEEE 802.15.3c. The outcomes of the constructed antenna elements' tests and simulations agree fairly well. The proposed layout works better than previous efforts in this field.

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A Highly Bendable Log-Periodic Array Antenna for Flexible Electronics

Cited by 4 publications

References 30 publications

Pattern reconfigurable antenna with specified main lobe deflection and stable bandwidth by using bistable composite laminates

Pattern reconfigurable antenna with specified main lobe deflection and stable bandwidth by using bistable composite laminates

A Novel Compact High Gain Wide-Band Log Periodic Dipole Array Antenna for Wireless Communication Systems

An optimized design for motivated broadband LPDA antenna

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