Application of the protruded strip structures to design an ultra‐wideband slot antenna with variable frequency band‐stop function. Issue 6 (27th March 2013)

• Record Type: Journal Article
• Authors: Ojaroudi, Nasser; Ojaroudi, Mohammad
• Is Part Of: Microwave and optical technology letters. Volume 55:Issue 6(2013:Jun.)
• Page Start: 1312
• Page End: 1316
• Publication Date: 2013-03-27
• Subjects: Microwaves -- Periodicals; Optics -- Periodicals; 621
• DOI: 10.1002/mop.27540
• Languages: English
• ISSNs: 0895-2477

Abstract

<abstract abstract-type="main" xml:lang="en"> <title>Abstract</title> <p>A novel method for designing a new slot antenna with band‐notched characteristic for ultra wide‐band (UWB) applications has been presented in this article. The proposed antenna consists of slotted ground plane with an extra rectangular slot with a pair of L‐shaped strips protruded inside the slot, and a square ring radiating stub with a pair of T‐shaped protruded strips inside the square ring. By cutting an extra rectangular slot with a pair of L‐shaped protruded strips in the ground plane, additional resonance is excited and hence much wider impedance bandwidth can be produced, especially at the higher band that the antenna provides a wide usable fractional bandwidth of more than 125% (3.08–14.13 GHz). In order to generate a band‐notched characteristic, we use the square ring stub with a pair of T‐shaped strips protruded inside the square ring. The measured results reveal that the presented slot antenna offers a very wide bandwidth with band‐notched operation, covering the WLAN band (5.12–6.05 GHz). The designed antenna has a small size of 20 × 20 mm². Good return loss and radiation pattern characteristics are obtained in the frequency band of interest. © 2013 Wiley Periodicals, Inc. Microwave Opt Technol Lett 55:1312–1316, 2013; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.27540</p> </abstract>