Design and realization of a printed microstrip log-periodic antenna

With the proliferation of communications, the need to build small, compact, multi-band, and high-gain antennas are clearly felt. Therefore, researchers make great efforts to improve the radiation characteristics and reduce the size of the antenna (Lee et al., 2016). Over the past few decades, microstrip antennas have been widely used in this field. Microstrip antennas have advantages over conventional antennas, such as their small size, which is used in wireless devices, airplanes, and satellites. Various methods reduce the dimensions and increase the microstrip antenna gain (Balanis, 2005).Common methods for designing a multi-band antenna include fractalization, the use of various slots, incomplete ground structure, and parasitic elements. Also, antenna miniaturization methods include the use of high dielectric constant materials, short-circuit microstrip antennas, shorting posts, and the use of cross-slots. The use of materials with high dielectric constant causes surface waves and reduces bandwidth and efficiency. In the shorting post method, the input impedance of the antenna power supply is sensitized to the distance between the shorting posts and the power cable. The method of cross-slots of equal length in the center of the patch is used in double-band antennas. All methods have problems such as decreasing gain and increasing the size of the antenna (

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“…Finally, in Ding et al. (2012), Wang et al. (2008) simulation and fabrication of log‐periodic antennas with dipole elements have been done.…”

Section: Introductionmentioning

confidence: 99%

Feature Enhancement of Three Log‐Periodic Antennas Based on Antipodal Vivaldi Patch

Eshaghpanah

Mohajeri

2022

Radio Science

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“…Many previous studies have attempted to produce antennas for Digital Video Broadcasting applications [4][5][6] using microstrip antennas. Microstrip antennas have a compact dimension, low profile and low fabrication cost [7].…”

Section: Introductionmentioning

confidence: 99%

Design of spiral labyrinth microstrip antenna for DVB-T application

2019

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Digital television broadcasting is technologies that have been developed by any country in the world. The advantages implementations of digital television broadcasting include reception of picture and sound sharper and better. This paper proposes a new design of spiral labyrinth microstrip antenna feed by microstrip line with array two element for Digital Video Broadcasting Technology (DVB-T) application at work frequency of 586MHz. The design of spiral labyrinth is used to minimize the dimensions of microstrip patch antenna while maintaining the working frequency at 586 MHz and array technique used to improve gain of antenna. The proposed antenna design was originally a rectangular patch that has been modified by the labyrinth spiral method. From the measurement result obtained return loss of -14.15 dB and VSWR of 1.54 at working frequency of 586 MHz. Bandwidth of proposed antenna is 117 MHz (547 MHz-664 MHz) while gain of antenna is 7.78 dBi. Beside that, using of the labyrinth spiral patch successfully reduced the dimensions of the microstrip antenna until 62.2% compared with the conventional rectangular patch of microstrip antenna. This study is usefull for DVB-T application in order to achieve the maximum signal quality and picture.

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Performance Comparisons of Four Modified Structures of Log Periodic Three Element Microstrip Antenna Arrays

Soni¹,

Toshniwal²

2017

Advances in Intelligent Systems and Computing

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Design and realization of a printed microstrip log-periodic antenna

Cited by 8 publications

References 5 publications

Feature Enhancement of Three Log‐Periodic Antennas Based on Antipodal Vivaldi Patch

Feature Enhancement of Three Log‐Periodic Antennas Based on Antipodal Vivaldi Patch

Design of spiral labyrinth microstrip antenna for DVB-T application

Performance Comparisons of Four Modified Structures of Log Periodic Three Element Microstrip Antenna Arrays

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