Part II: A Conductor-Backed Slot Antenna Element Surrounded by a Shorting-Post Cavity to Suppress Parallel-Plate Mode Excitation—Design Analysis and Experiment

2011 ◽  
Vol 59 (9) ◽  
pp. 3185-3193 ◽  
Author(s):  
Brian L. McCabe ◽  
Nirod K. Das
Keyword(s):  
Parallel Plate ◽  
Design Analysis ◽  
Slot Antenna ◽  
Antenna Element ◽  
Mode Excitation

scholarly journals Radiation Efficient Unidirectional Low-Profile Slot Antenna Elements for X-Band Application

2005 ◽  
Vol 3 ◽  
pp. 143-146
Author(s):  
C. Löcker ◽  
T. Vaupel ◽  
T. F. Eibert
Keyword(s):  
Parallel Plate ◽  
Radiation Efficiency ◽  
Slot Antenna ◽  
Coupling Coefficients ◽  
Rectangular Slot ◽  
Mode Suppression ◽  
Low Profile ◽  
Shorting Pin ◽  
Strong Excitation ◽  
Back Reflector

Abstract. Slots in metallic ground planes are very promising candidates for conformal antenna applications. However, a low-profile unidirectional antenna requires a back reflector close to the slot and the resulting stripline feed causes strong excitation of parallel-plate modes. In this contribution, we consider unidirectional reflector-backed slot configurations with parallel-plate mode suppression by shorting pins. Starting from a parametric study with respect to shorting pin location and back reflector distance, we present a stripline-fed rectangular slot element with radiation efficiency of more than 80% and a bandwidth of about 5% at centre frequency 10GHz. A careful optimisation of shorting pin locations guarantees reliable parallel-plate mode suppression without deteriorating the slot radiation behaviour. Coupling coefficients between parallel and aligned rectangular slot elements are presented. For increased bandwidth applications, a bow-tie slot element with about 8% bandwidth and radiation efficiency of close to 80% is proposed.

Arrow Patch-Slot Antenna for 5G Lower Frequency Band Communications

2021 ◽  
Vol 35 (11) ◽  
pp. 1418-1419
Author(s):  
Yuhao Feng ◽  
Yiming Chen ◽  
Atef Elsherbeni ◽  
Khalid Alharbi
Keyword(s):  
Antenna Arrays ◽  
Coplanar Waveguide ◽  
Ground Plane ◽  
Base Stations ◽  
Slot Antenna ◽  
Main Beam ◽  
Antenna Element ◽  
Single Element ◽  
Rectangular Slot ◽  
Compact Size

A compact size arrow shaped patch in a rectangular slot antenna is designed for 5G communications in the lower 3 to 6 GHz band. The antenna element is fed through a coplanar waveguide with partial ground plane for better impedance matching with 50 Ohms across the entire band. The maximum gain of a single element is 3.8 dB at 3.7 GHz, while for linear arrays of 5 and 15 elements with uniform excitation the maximum gains are 10.9 dB and 16 dB, respectively. The 5 and 15 elements arrays provide scanning range with no significant degradation of the main beam up to 30˚ and 45˚, respectively. The properties of this antenna element makes it suitable for 5G wireless mobile devices and miniaturized base stations antenna arrays.

Tapered slot antenna array with parallel plate waveguides

2003 ◽  
Author(s):  
S. Yamaguchi ◽  
K. Yamashita ◽  
K. Nishizawa ◽  
H. Fushimi ◽  
H. Miyashita ◽  
...  
Keyword(s):  
Antenna Array ◽  
Parallel Plate ◽  
Slot Antenna

High-Isolation 3.5 GHz Eight-Antenna MIMO Array Using Balanced Open-Slot Antenna Element for 5G Smartphones

2019 ◽  
Vol 67 (6) ◽  
pp. 3820-3830 ◽  
Author(s):  
Yixin Li ◽  
Chow-Yen-Desmond Sim ◽  
Yong Luo ◽  
Guangli Yang
Keyword(s):  
Slot Antenna ◽  
Antenna Element ◽  
High Isolation

scholarly journals Design of Wideband Slot Antenna Array with Stereoscopic Differentially Fed Structures

2019 ◽  
Vol 2019 ◽  
pp. 1-14 ◽  
Author(s):  
Guang Sun ◽  
Ge Gao ◽  
Tingting Liu ◽  
Yi Liu ◽  
Hu Yang
Keyword(s):  
Antenna Array ◽  
High Gain ◽  
Radar System ◽  
Slot Antenna ◽  
Impedance Bandwidth ◽  
Antenna Element ◽  
Radiation Characteristics ◽  
Wide Bandwidth ◽  
Feeding Structure

In this paper, a wideband slot antenna element and its array with stereoscopic differentially fed structures are proposed for the radar system. Firstly, a series of slots and a stereoscopic differentially fed structure are designed for the antenna element, which makes it possess a wide bandwidth, stable radiation characteristics, and rather high gain. Moreover, the stereoscopic feeding structure can firmly support the antenna’s radiation structure and reduce the influence of feeding connectors on radiating performance. Secondly, a 4 × 4 array is designed using the proposed antenna element. And a hierarchical feeding network is designed for the array on the basis of the stereoscopic differentially fed structure. For validation, the antenna element and 4 × 4 array are both fabricated and measured: (1) the measured −10 dB impedance bandwidth of the antenna element is 62% (6.8–12.9 GHz) and the gain within the entire band is 5–9.7 dBi and (2) the measured −10 dB impedance bandwidth of the array is approximately 50% (7 to 12 GHz) with its gain being 14–19.75 dBi within the entire band. Notably, measured results agree well with simulations and show great advantages over other similar antennas on bandwidth and gain.

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