Next Article in Journal
Analysis of Propagation Characteristics along an Array of Silver Nanorods Using Dielectric Constants from Experimental Data and the Drude-Lorentz Model
Previous Article in Journal
Life Cycle Assessment of Lighting Systems and Light Loss Factor: A Case Study for Indoor Workplaces in France
Open AccessArticle

Mesh-Grounded Monopolar Hexagonal Microstrip Antenna for Artillery-Launched Observation Round

1
Department of Automatic Electric Engineering, Yeungnam University College, Daegu 42415, Korea
2
The Second Research and Development Institute, Agency for Defense Development, Daejeon 34186, Korea
3
Department of Information and Communication Engineering, Hanbat National University, Daejeon 34158, Korea
*
Author to whom correspondence should be addressed.
Electronics 2019, 8(11), 1279; https://doi.org/10.3390/electronics8111279
Received: 8 October 2019 / Revised: 24 October 2019 / Accepted: 1 November 2019 / Published: 3 November 2019
(This article belongs to the Section Microwave and Wireless Communications)
This paper presents a novel low-profile microstrip antenna with an omnidirectional radiation pattern for an artillery-launched observation round. The proposed antenna consists of one centered hexagonal patch for a feeding network and six periodic arrays of a trapezoid patch for a radiator. The trapezoid patch is equal to a half-sized hexagonal patch based on geometrical symmetry. A gap-coupled one-hexagonal patch and six trapezoid patches are supported on a nonfundamental TM02 mode for vertically polarized omnidirectional radiation patterns. In addition, a meshed ground structure for the proposed antenna is employed to improve the impedance bandwidth. The thin metal wires that are formed by the meshed ground structure yield six trapezoid slot arrays for the feeding network and three triangular slot arrays for the radiator on the ground plane. To verify the feasibility of the meshed ground structure, the mesh width, denoted by w, was investigated theoretically and optimized carefully to enlarge the impedance bandwidth of the proposed antenna. Finally, the proposed antenna, with a mesh width of 0.2 mm, successfully demonstrated excellent monopolar radiation at a resonant frequency of 5.84 GHz, a realized gain of 5.27 dBi, and an impedance bandwidth of 452 MHz from 5.583 GHz to 6.035 GHz with respect to 7.78% at a center frequency of 5.809 GHz.
Keywords: hexagonal microstrip antenna; monopolar radiation; omnidirectional pattern; gap-coupling resonator array; mesh ground hexagonal microstrip antenna; monopolar radiation; omnidirectional pattern; gap-coupling resonator array; mesh ground
MDPI and ACS Style

Lee, D.; Kim, K.; Pyo, S. Mesh-Grounded Monopolar Hexagonal Microstrip Antenna for Artillery-Launched Observation Round. Electronics 2019, 8, 1279.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop