Summary
International Symposium on Antennas and Propagation
2012
Session Number:3B2
Session:
Number:3B2-2
PIN Diodes Slotted Microstrip Antenna as Frequency Reconfigurable Antenna
Bambang Setia Nugroho,
pp.-
Publication Date:2012/10/29
Online ISSN:2188-5079
Summary:
Frequency reconfigurable antenna is an antenna which can change the operating frequency without changing the whole antenna structure. In the previous published report it was proved the concept that varying the slot length on the microstrip antenna by using copper strips can be used to alter the resonant frequency in a certain frequency range. Using copper strips as ideal switches will eliminate the issue of designing DC biasing lines onto antenna. However, in practice, RF switches has to be used instead of copper strips. This paper presents a slotted microstrip antenna as a frequency reconfigurable antenna using PIN diodes as RF switches. The PIN diodes are turned on and off by DC biased signal, therefore, biasing line network has to be designed carefully to minimize the impact on the antenna performance. The simulated results demonstrate desirable characteristic as frequency reconfigurable in the range of 1.28 GHz to 2.92 GHz with 14 combinations of active switches. The designed antenna have been fabricated and measured. The proposed antenna is very promising for the application of advanced communication systems.