Influence of thickness of the rings and height from the ground plane on the input characteristics of the multiple ring monopole antennas

2006 ◽  
Author(s):  
A. Mirkamali ◽  
P.S. Hall
Keyword(s):  
Ground Plane ◽  
Monopole Antennas ◽  
Multiple Ring

Mutual coupling reduction of low-profile monopole antennas on high-impedance ground plane

2002 ◽  
Vol 38 (16) ◽  
pp. 849 ◽  
Author(s):  
H. Xin ◽  
K. Matsugatani ◽  
M. Kim ◽  
J. Hacker ◽  
J.A. Higgins ◽  
...  
Keyword(s):  
Mutual Coupling ◽  
Ground Plane ◽  
High Impedance ◽  
Low Profile ◽  
Monopole Antennas ◽  
Mutual Coupling Reduction

scholarly journals Watchstrap-Embedded Four-Element Multiple-Input–Multiple-Output Antenna Design for a Smartwatch in 5.2–5.8 GHz Wireless Applications

2018 ◽  
Vol 2018 ◽  
pp. 1-16 ◽  
Author(s):  
Chia-Hao Wu ◽  
Jwo-Shiun Sun ◽  
Bo-Shiun Lu
Keyword(s):  
Ground Plane ◽  
Multiple Input Multiple Output ◽  
Three Dimensional ◽  
Antenna Design ◽  
Mimo Antenna ◽  
Wireless Applications ◽  
Plastic Materials ◽  
Monopole Antennas ◽  
Multiple Input ◽  
Input Multiple Output

This paper presents a compact four-element multiple-input–multiple-output (MIMO) antenna design operating within the WiFi 802.11 ac bands (5.2–5.84 GHz) for a smartwatch. The antenna is fabricated using a polyamide substrate and embedded into the strap of a smartwatch model; the strap is created using three-dimensional etching of plastic materials. The four-element MIMO antenna is formed by four monopole antennas, has a simple structure, and is connected to the system ground plane of the smartwatch. Due to the stub and notched block between two antennas and the slit in the system ground, the four-element MIMO antenna exhibits favorable isolation. Moreover, the envelope correlation coefficient of the antennas is considerably lower than 0.005 in the operating band. The measured −6 dB impedance bandwidths of the four elements of the antenna (Ant1–Ant4) with the human wrist encompass the WiFi 802.11 ac range of 5.2–5.84 GHz; moreover, an isolation of more than 20 dB is achieved. The measured antenna efficiency with and without a phantom hand are 45%–55% and 93%–97%, respectively.

Multiband multiple ring monopole antennas

2003 ◽  
Vol 51 (4) ◽  
pp. 722-729 ◽  
Author(s):  
C.T.P. Song ◽  
P.S. Hall ◽  
H. Ghafouri-Shiraz
Keyword(s):  
Monopole Antennas ◽  
Multiple Ring

Sleeve monopole antennas at the center of a circular ground plane

2003 ◽  
Vol 38 (4) ◽  
pp. 341-343 ◽  
Author(s):  
Jingli Guo ◽  
Yicai Ji ◽  
Qizhong Liu
Keyword(s):  
Ground Plane ◽  
Monopole Antennas

scholarly journals Parasitic Strip Loaded Dual Band Notch Circular Monopole Antenna with Defected Ground Structure

2016 ◽  
Vol 6 (4) ◽  
pp. 1742
Author(s):  
P Syam Sundar ◽  
Sarat K Kotamraju ◽  
B T P Madhav ◽  
M Sreehari ◽  
K Raghavendra Rao ◽  
...  
Keyword(s):  
Ground Plane ◽  
Substrate Material ◽  
Dual Band ◽  
Defected Ground Structure ◽  
Ground Structure ◽  
Basic Model ◽  
Radiating Element ◽  
Monopole Antennas ◽  
Defected Ground Structures ◽  
Similar Kind

In this article a parasitic strip loaded monopole antennas are designed to notch dual and triple bands. The designed models are constructed on one side of the substrate material and on the other end defected ground structures are implemented. The basic antenna comprises a tuning stub and a ground plane with tapered shape slot as DGS. Another model is constructed with circular monopole radiating element on front side and similar kind of ground structure used in the basic rectangular tuning stub antenna. To create notched bands with tuning stubs, two symmetrical parasitic slits are placed inside the slot of the ground plane. The basic model is of the rectangular stub notching triple band and the circular tuning stub antenna notching dual band. Dual band notched circular tuning stub antenna is prototyped on FR4 substrate and measured results from vector network analyzer are compared with simulation results of HFSS for validation.

scholarly journals MIMO Antenna for UWB with Single Tuned Frequency Notched Characteristics using Parasitic Element Method

2019 ◽  
Vol 9 (1S5) ◽  
pp. 14-16
Keyword(s):  
Frequency Band ◽  
Ground Plane ◽  
Wide Band ◽  
Impedance Bandwidth ◽  
Back Side ◽  
Antenna Size ◽  
Parasitic Element ◽  
Mimo Antenna ◽  
Feed Line ◽  
Monopole Antennas

A MIMO antenna with micro strip fed ultra wide band nature with characteristics of single band notching is presented in this paper. MIMO antenna has two monopole antennas. Larger impedance bandwidth is obtained by providing slots beside the feed line on ground plane. By using parasitic element on back side of patch band notching characteristics cab be obtained. Here, antenna size is 44x22x1.6 mm3 . This antenna operates over the frequency band 4GHz to 11GHz with notched frequency band 5.1GHz to 5.9GHz. By keeping two monopole antennas perpendicular to each other, isolation of less than - 15dB is obtained and good value of ECC is obtained.

Elliptical multiple-ring monopole antennas

2005 ◽  
Vol 48 (1) ◽  
pp. 4-8 ◽  
Author(s):  
Ali Mirkamali ◽  
Peter S. Hall ◽  
Mohammad Soleimani
Keyword(s):  
Monopole Antennas ◽  
Multiple Ring
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