Planar circular patch with elliptical slot antenna for ultrawideband communication applications

2014 ◽  
Vol 57 (2) ◽  
pp. 325-328 ◽  
Author(s):  
Yong-Wei Zhong ◽  
Guo-Min Yang ◽  
Li-Rong Zheng
Keyword(s):  
Slot Antenna ◽  
Circular Patch ◽  
Ultrawideband Communication

scholarly journals Bandwidth-Enhanced Circularly Polarized Crescent-Shaped Slot Antenna via Circular-Patch Loading

2019 ◽  
Vol 9 (6) ◽  
pp. 1117 ◽  
Author(s):  
Son Trinh-Van ◽  
Youngoo Yang ◽  
Kang-Yoon Lee ◽  
Yong Kim ◽  
Keum Hwang
Keyword(s):  
Axial Ratio ◽  
Slot Antenna ◽  
Proper Position ◽  
Circularly Polarized ◽  
Circular Patch ◽  
Feed Line ◽  
Measurement Results ◽  
Patch Loading ◽  
Good Agreement ◽  
Microstrip Feed

This paper presents the crescent-shaped slot antenna loading of a circular patch that greatly enhances a 3 dB axial-ratio (AR) bandwidth. A bent feeding line was introduced and attached to a 50- Ω microstrip feed line to achieve circular polarization operation. By loading the circular patch into a crescent-shaped slot at a proper position, the 3 dB AR bandwidth is considerably broadened. An antenna prototype with overall dimensions of 50.8 × 50.8 × 0.5 mm 3 is experimentally demonstrated. Measurement results of the fabricated antenna showed a wide −10 dB reflection bandwidth of 92.33% (1.79–4.86 GHz) and a broad 3 dB AR bandwidth of 84.40% (1.89–4.65 GHz). The measured peak gain of the antenna was approximately 4.09 dBic at 2.9 GHz. Good agreement was also achieved between measurement and simulation results.

An Ultra-Wideband Antenna for Mobile Handset Applications

2011 ◽  
Vol 383-390 ◽  
pp. 4457-4460 ◽  
Author(s):  
Wei Hua Zong ◽  
Xiao Yun Qu ◽  
Yong Xin Guo ◽  
Ming Xin Shao
Keyword(s):  
Mobile Phone ◽  
Microstrip Line ◽  
Ground Plane ◽  
Hybrid Structure ◽  
Ultra Wideband ◽  
Slot Antenna ◽  
Wideband Antenna ◽  
Mobile Phone Application ◽  
Circular Patch ◽  
Mobile Handset

A printed open-ended slot antenna is designed for mobile phone application. The slot has a hybrid structure of a rectangle and a circle cut out of a 60mm×115mm ground plane, and fed by a microstrip line with a circular patch connected to a bent strip on the upper part of the patch. The proposed antenna provides a wide -6dB bandwidth covering 1.73-11GHz. It can be used in DCS1800, PCS1900, UMTS2000, TD-SCDMA, Bluetooth, LTE2.5GHz, WiMax, and UWB

Compact modified circular patch quad-band MIMO antenna with high isolation and low correlation

2016 ◽  
Vol 9 (3) ◽  
pp. 581-590
Author(s):  
Chithradevi Rajagopal ◽  
Nafiza Noorullakhan ◽  
Sreeja Balakrishnapillai Suseela ◽  
Radha Sankararajan
Keyword(s):  
Mutual Coupling ◽  
Local Area Network ◽  
Diversity Gain ◽  
Slot Antenna ◽  
Antenna Element ◽  
Area Network ◽  
Mimo Antenna ◽  
High Isolation ◽  
Circular Patch ◽  
Low Correlation

A compact quad band slot antenna with high isolation suitable for multiple-input–multiple-output (MIMO) applications is developed. The quad bands are achieved by introducing slots in a modified, size reduced circular patch antenna. The single-antenna element consists of a substrate sandwiched between a modified circular patch with F shape slot, a feeder line and a via running between the radiating patch and the feeder line. The proposed design resonates at the frequencies of 1.8 GHz (1.7–1.88 GHz), 3.6 GHz (3.50–3.76 GHz), 5.4 GHz (5.25–5.38 GHz), and 7.2 GHz (7.15–7.35 GHz) covering the GSM II, WIMAX, wireless local area network (WLAN), and C-band applications, respectively. The independent tuning of frequency bands is achieved by varying the length of the slots. Orthogonally placed two- and four-element MIMO antenna system are fabricated, tested, and the measurement results are presented. The separation between each element is reduced to 0.085λ while introducing slotted and pulsed stubs to improve isolation between elements. A detailed analysis, including mutual coupling, low correlation, diversity gain, and total array reflection coefficient had been reported. The two- and four-element MIMO antennas achieved correlation as low as 0.005, mutual coupling ≤−15 dB, and diversity gain nearly 10 dB.

An ultra-wideband microstrip elliptical slot antenna excited by a circular patch

2008 ◽  
Vol 50 (4) ◽  
pp. 845-846 ◽  
Author(s):  
Jia Lao ◽  
Ronghong Jin ◽  
Junping Geng ◽  
Qi Wu
Keyword(s):  
Ultra Wideband ◽  
Slot Antenna ◽  
Circular Patch

Design and Analysis of Air Gap Microstrip Slot Antenna Using Aperture Coupling

2012 ◽  
Vol 2 (4) ◽  
pp. 104-106
Author(s):  
J. P. Ganji J. P. Ganji ◽  
◽  
M.C.Sahoo M.C.Sahoo ◽  
J.M.Rathod J.M.Rathod
Keyword(s):  
Air Gap ◽  
Slot Antenna ◽  
Aperture Coupling

INFLUENCE OF EXCITATION METHOD ON THE INTEGRAL CHARACTERISTICS OF THE CIRCULAR PATCH MONOPOLE ANTENNAS

2018 ◽  
Vol 77 (17) ◽  
pp. 1485-1495
Author(s):  
S. A. Pogarsky ◽  
Leonid M. Lytvynenko ◽  
D. V. Mayboroda ◽  
A. V. Poznyakov
Keyword(s):  
Circular Patch ◽  
Monopole Antennas ◽  
Integral Characteristics ◽  
Excitation Method

SOLUTION TO THE MODEL PROBLEM OF EXCITATION OF LOADED CONIC SLOT ANTENNA BY METHOD OF SINGULAR INTEGRAL EQUATIONS

2016 ◽  
Vol 75 (20) ◽  
pp. 1799-1812
Author(s):  
V. A. Doroshenko ◽  
S.N. Ievleva ◽  
N.P. Klimova ◽  
A. S. Nechiporenko ◽  
A. A. Strelnitsky
Keyword(s):  
Integral Equations ◽  
Singular Integral ◽  
Model Problem ◽  
Singular Integral Equations ◽  
Slot Antenna
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