Log-Periodic patch antenna with tunable frequency

Author

Ismail, M.F. ; Rahim, M.K.A. ; Zubir, F. ; Ayop, O.

Author_Institution

Radio Commun. Eng. Dept., Univ. Teknol. Malaysia, Skudai, Malaysia

fYear

2011

fDate

11-15 April 2011

Firstpage

2165

Lastpage

2169

Abstract

This paper describes the design and analysis of a Log-Periodic Microstrip Antenna Array operating between 3.3 Gigahertz (GHz) and 4.5 GHz. A five square patches fed by inset feed line technique are connected with a single transmission line by a log-periodic array formation. By applying five PIN Diodes at the transmission line with a quarter-wave length radial stub biasing, four different sub-band frequencies are configured by switching ON and OFF the PIN Diode. Simulation as well as measurement results with antenna design is presented and it shows that a good agreement in term of return loss. The simulated radiation pattern and realized gain for every sub bands also presented and discussed.

Keywords

antenna feeds; antenna radiation patterns; log periodic antennas; microstrip antenna arrays; p-i-n diodes; transmission lines; PIN diodes; antenna design; inset feed line technique; log-periodic array formation; log-periodic microstrip antenna array; log-periodic patch antenna; quarter-wave length radial stub biasing; return loss; simulated radiation pattern; single transmission line; square patches; subband frequency; tunable frequency; Antenna measurements; Antenna radiation patterns; Loss measurement; Microstrip antennas; PIN photodiodes; Transmission line measurements; Wideband; Log-periodic; Microstrip antenna; PIN Diode; Reconfigurable;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation (EUCAP), Proceedings of the 5th European Conference on

Conference_Location

Rome

Print_ISBN

978-1-4577-0250-1

Type

conf

Filename

5782000