Small square monopole antenna having variable frequency band-notch operation for UWB wireless communications

2012 ◽  
Vol 54 (8) ◽  
pp. 1994-1998 ◽  
Author(s):  
Nasser Ojaroudi ◽  
Mohammad Ojaroudi
Keyword(s):  
Wireless Communications ◽  
Frequency Band ◽  
Monopole Antenna ◽  
Variable Frequency

ULTRA-WIDEBAND SMALL SQUARE MONOPOLE ANTENNA WITH VARIABLE FREQUENCY BAND-NOTCH FUNCTION

2010 ◽  
Vol 15 ◽  
pp. 133-144 ◽  
Author(s):  
Shahabodin Yazdanifard ◽  
Ramezan Ali Sadeghzadeh ◽  
Mohammad Ojaroudi
Keyword(s):  
Frequency Band ◽  
Monopole Antenna ◽  
Ultra Wideband ◽  
Variable Frequency

scholarly journals A Compact Printed Monopole Antenna for WiMAX/WLAN and UWB Applications

2018 ◽  
Vol 10 (12) ◽  
pp. 122 ◽  
Author(s):  
Zubin Chen ◽  
Baijun Lu ◽  
Yanzhou Zhu ◽  
Hao Lv
Keyword(s):  
Frequency Band ◽  
High Frequency ◽  
Field Work ◽  
Monopole Antenna ◽  
Center Frequency ◽  
High Frequency Band ◽  
Work Requirements ◽  
Printed Monopole Antenna ◽  
Printed Monopole ◽  
Uwb Applications

In this paper, a printed monopole antenna design for WiMAX/WLAN applications in cable-free self-positioning seismograph nodes is proposed. Great improvements were achieved in miniaturizing the antenna and in widening the narrow bandwidth of the high-frequency band. The antenna was fed by a microstrip gradient line and consisted of a triangle, an inverted-F shape, and an M-shaped structure, which was rotated 90° counterclockwise to form a surface-radiating patch. This structure effectively widened the operating bandwidth of the antenna. Excitation led to the generation of two impedance bands of 2.39–2.49 and 4.26–7.99 GHz for a voltage standing wave ratio of less than 2. The two impedance bandwidths were 100 MHz, i.e., 4.08% relative to the center frequency of 2.45 GHz, and 3730 MHz, i.e., 64.31% relative to the center frequency of 5.80 GHz, covering the WiMAX high-frequency band (5.25–5.85 GHz) and the WLAN band (2.4/5.2/5.8). This article describes the design details of the antenna and presents the results of both simulations and experiments that show good agreement. The proposed antenna meets the field-work requirements of cable-less seismograph nodes.

scholarly journals A Multiband Printed Log-Periodic Dipole Array for Wireless Communications

2014 ◽  
Vol 2014 ◽  
pp. 1-6 ◽  
Author(s):  
Giovanni Andrea Casula ◽  
Paolo Maxia
Keyword(s):  
Wireless Communications ◽  
Radiation Pattern ◽  
Frequency Band ◽  
Stop Band ◽  
Operating Frequency ◽  
Frequency Bands ◽  
Operating Frequency Band ◽  
Input Matching ◽  
Compact Size ◽  
Cst Microwave Studio

A multiband printed Log-periodic dipole array (LPDA) antenna for wireless communications is presented. The antenna has been designed starting from Carrel’s theory, optimized using CST Microwave Studio 2012, and then realized. The comparison between simulated and measured results shows that the proposed antenna can be used for wireless communications both in the S (2.4–3 GHz) and in the C (5.2–5.8 GHz) frequency bands, with very good input matching and a satisfactory end-fire radiation pattern. Moreover, it has a compact size, is very easy to realize, and presents an excellent out-of-band rejection, without the use of stop-band filters, thus avoiding interference out of its operating frequency band.

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