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

2010 ◽  
Vol 2010 ◽  
pp. 1-14 ◽  
Author(s):  
Constantinos I. Votis ◽  
Panos Kostarakis ◽  
Antonis A. Alexandridis
Keyword(s):  
Design Analysis ◽  
Mimo Channel ◽  
Scattering Parameters ◽  
Antenna Structure ◽  
Digital Beamforming ◽  
Wireless Applications ◽  
Ism Band ◽  
Channel Sounder ◽  
Integrated Baluns

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.

scholarly journals Single Step 2-Port Device De-Embedding Algorithm for Fixture-DUT-Fixture Network Assembly

Electronics ◽  
2021 ◽  
Vol 10 (11) ◽  
pp. 1275
Author(s):  
Simone Scafati ◽  
Enza Pellegrino ◽  
Francesco de Paulis ◽  
Carlo Olivieri ◽  
James Drewniak ◽  
...  
Keyword(s):  
Standard Technique ◽  
Single Step ◽  
Scattering Parameters ◽  
Linear Set ◽  
S Parameter ◽  
Parameter Conversion ◽  
Before And After ◽  
One Step ◽  
Typical Measurement

The de-embedding of measurement fixtures is relevant for an accurate experimental characterization of radio frequency and digital electronic devices. The standard technique consists in removing the effects of the measurement fixtures by the calculation of the transfer scattering parameters (T-parameters) from the available measured (or simulated) global scattering parameters (S-parameters). The standard de-embedding is achieved by a multiple steps process, involving the S-to-T and subsequent T-to-S parameter conversion. In a typical measurement setup, two fixtures are usually placed before and after the device under test (DUT) allowing the connection of the device to the calibrated vector network analyzer coaxial ports. An alternative method is proposed in this paper: it is based on the newly developed multi-network cascading algorithm. The matrices involved in the fixture-DUT-fixture cascading gives rise to a non-linear set of equations that is in one step analytically solved in closed form, obtaining a unique solution. The method is shown to be effective and at least as accurate as the standard multi-step de-embedding one.

U-Patch Antenna for RFID and Wireless Applications

2011 ◽  
Vol 324 ◽  
pp. 434-436
Author(s):  
R. Abi Saad ◽  
Zeina Melhem ◽  
Chadi Nader ◽  
Youssef Zaatar ◽  
Doumit Zaouk
Keyword(s):  
Radio Frequency Identification ◽  
Patch Antenna ◽  
Impedance Matching ◽  
Dual Band ◽  
Antenna Structure ◽  
Wireless Applications ◽  
Microstrip Patch ◽  
Additional Layer ◽  
Quarter Wavelength ◽  
Frequency Identification

in this paper, we propose a new multi-band patch antenna structure for embedded RFID (Radio Frequency Identification) readers and wireless communications. The proposed antenna is a dual band microstrip patch antenna using U-slot geometry. The operating frequencies of the proposed antenna are chosen as 2.4 and 0.9 (GHz), obtained by optimizing the physical dimensions of the U-slot. Several parameters have been investigated using Ansoft Designer software. The antenna is fed through a quarter wavelength transformer for impedance matching. An additional layer of alumina is added above the surface of the conductors to increase the performance of the antenna.

Multitone Multiharmonic Scattering Parameters for the Characterization of Nonlinear Networks

2021 ◽  
Vol 70 ◽  
pp. 1-12
Author(s):  
Gian Piero Gibiino ◽  
Alberto Maria Angelotti ◽  
Alberto Santarelli ◽  
Fabio Filicori ◽  
Pier Andrea Traverso
Keyword(s):  
Scattering Parameters ◽  
Nonlinear Networks
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