1. N-Shaped Frequency Reconfigurable Antenna with Auto Switching Unit.
- Author
-
V., Arun, L. R., KarlMarx, Kumar, Jegadish K. J., and Vimlitha, Christy C.
- Subjects
- *
ADAPTIVE computing systems , *WIRELESS communications , *ANTENNAS (Electronics) , *MICROCONTROLLERS , *IMPEDANCE matching - Abstract
These days the need for reconfigurable antenna is widely increased in the field of multi band wireless communication. The proposed new design of N-shaped antenna structure consists of two PIN diodes for switching purpose. They are switched automatically by a pre-programmed Arduino microcontroller unit to attain the reconfiguration of four-different bands without changing the physical dimension of the antenna. The four switching bands are 3.5 GHz (WiMAX), 2.46 GHz (WLAN), 1.2 GHz (GPS) and 2.1 GHz (UMTS). It has a center stub with two N-shaped stub carrying PIN diodes. The stubs are connected with a 50ohm microstrip feed line. The measured return loss closely follows the simulation results. Also it exhibits a good impedance matching during the four switching states. The simulation has been done through Ansoft HFSS and measured results are obtained from a Vector Network Analyzer (VNA). The obtained VSWR value lies beneath 2 for all obtained bands. The radiation pattern of the antenna is bidirectional for all the four-switching states. [ABSTRACT FROM AUTHOR]
- Published
- 2018