Browsing by Author "Sanchez-Fernandez, Carlos J."

Now showing 1 - 2 of 2

Dual-Band Implantable Antenna Based on Short-Circuited SRR
(2010)
Sanchez-Fernandez, Carlos J.
;
Quevedo-Teruel, Oscar
;
Requena-Carrion, J.
;
Inclan-Sanchez, L.
;
Rajo-Iglesias, Eva
In this communication, an innovative dual band microstrip patch antenna is proposed for Implantable Medical Devices (IMD). Particularly, the covered bands are MICS (402-405MHz) and ISM (2.4-2.48GHz). The antenna has a multilayer configuration where the feeding line and radiating layer are located at different levels. The radiating element of the antenna is a Split Ring Resonator (SRR) coupled to a Spiral. Both elements are short-circuited to the ground plane to achieve size reduction. In addition, the effects of human body geometry and dielectric properties are studied. Three models are investigated: single-layer, three-layer and a realistic human body based on the Voxel Man dataset.
Reconfigurable Multilayer Patch Antennas Based on Metamaterials
(2010)
Sanchez-Fernandez, Carlos J.
;
Quevedo-Teruel, Oscar
;
Malcolm Ng Mou Kehn
;
Rajo-Iglesias, Eva
;
電機工程學系
Along this document, the reconfigurability possibilities of a dual band microstrip patch antenna based on short-circuited SRR is studied. Since the antenna presents a narrow bandwidth, reconfigurability techniques has been implemented to extend the effective bandwidth of the device. The proposed antenna has a multilayer configuration where the feeding line and the radiating layer are located at different levels. A previous study by using lumped elements has been carried out and taking into account these results, the final reconfigurable version has been implemented by using varactor diodes.