Design, Analysis, and Measurements of an Antenna Structure for 2.4 GHz Wireless Applications

This paper reports measured results of a multielement antenna implementation, we constructed, that performs at 2.4 GHz ISM band. Particular emphasis was given to the scattering parameters and validation characterization of this antenna structure. The constructed multielement antenna that was studied in both azimuth and elevation planes consists of a number of printed dipoles with integrated baluns. Due to its multielement construction, the proposed antenna structure is suitable for applications that require multielements nature such as MIMO, channel sounder, and digital beamforming

Hypoglossal nerve palsy caused by a large vagal paraganglioma: case report

We present a vagal paraganglioma in a 74-year-old woman, who presented with dysphagia, dysarthria and hoarseness. (C) 2008 The British Association of-Oral and Maxillofacial Surgeons. Published by Elsevier Ltd. All rights reserved

Use of a porcine dermal collagen graft (Permacol) in parotid surgery

Our aim was to present the results of the use of porcine dermal collagen graft (Permacol) in the prevention of Frey’s syndrome and face-contouring aesthetic deformities after operations on the parotid. We treated 19 patients with parotid tumours. After resection, a Permacol sheet was applied to the perimeter of the tissue deficit so that it was fully covered, and was sutured firmly. This technique produced satisfactory aesthetic results with good facial contouring in all patients. It also protected the exposed parotid nerve plexus, and none of the patients developed Frey’s syndrome. Permacol produced good results in both postoperative facial contouring and prevention of Frey’s syndrome. (c) 2008 The British Association of Oral and Maxillofacial Surgeons. Published by Elsevier Ltd. All rights reserved