en 5-Antenna Antenna Research Paper Research Paper <div style="text-align: justify;"><span style="font-family:Times New Roman;"><span style="color:#000000;"><span style="font-size:14px;">In this article, a very small flexible antenna with dual-band rejection specifications is proposed for operating in both wearable and ultra-wideband (UWB) applications. The overall size of this antenna is about 18&times;18&times;0.508 mm³ and by etching out two rectangular slot type single split-ring resonators (SRRs) of different dimensions from the radiating patch, dual band-notched specifications are obtained in WiMAX (3.3 GHz to 3.7&nbsp;GHz) and WLAN (5.15 GHz to 5.825 GHz) wireless communication bands. The designed antenna operates over a wide impedance bandwidth (|<em>S</em>₁₁| < &ndash;10 dB) from 2.1 GHz to 12 GHz which can cover the whole UWB band from 3.1 GHz to 10.6 GHz and reject the two mentioned bands<strong><span dir="RTL">.</span></strong> An asymmetrical partial ground plane and a beveled radiating patch are utilized to achieve 140% fractional bandwidth. Also, due to the good wearable radiation characteristics, this antenna can operate in industrial scientific medical (ISM) band from 2.4&nbsp;GHz to 2.5 GHz. Meanwhile, the specific absorption ratio (SAR) value of the proposed antenna is less than the standard limit of 1.6 W/kg.</span></span></span></div> Dual Band-Notched Specifications, ISM Band, UWB Antennas, Wearable Characteristics. 2062 2062 http://ijeee.iust.ac.ir/browse.php?a_code=A-10-3713-2&slc_lang=en&sid=1 F. Bahmanzadeh f.bahmanzadeh@shirazu.ac.ir 1800319475328460010089 1800319475328460010089 No Department of Communications and Electronics, School of Electrical and Computer Engineering, Shiraz University, Shiraz, Iran. F. Mohajeri mohajeri@shirazu.ac.ir 1800319475328460010090 1800319475328460010090 Yes Department of Communications and Electronics, School of Electrical and Computer Engineering, Shiraz University, Shiraz, Iran.