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Reconfigurable bow tie‐based filtering antenna for cognitive radio applications
Author(s) -
Potti Devi Sowjanya,
Balaji Pranamika,
Gulam Nabi Alsath Mohammed,
Savarimuthu Kirubaveni,
Selvam Udayaezhil,
Valavan Nilavathani
Publication year - 2020
Publication title -
international journal of rf and microwave computer‐aided engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.335
H-Index - 39
eISSN - 1099-047X
pISSN - 1096-4290
DOI - 10.1002/mmce.22208
Subject(s) - reconfigurable antenna , cognitive radio , pin diode , antenna (radio) , computer science , interference (communication) , bow tie , diode , omnidirectional antenna , electronic engineering , wireless , electrical engineering , engineering , telecommunications , antenna efficiency , channel (broadcasting)
This article presents the design and implementation of an 88 × 85 mm reconfigurable filtering bow‐tie antenna with four operating states. Two PIN diodes are deployed to reconfigure the transmission zeros to realize ultra‐wide band (UWB), 3.5/5.5 GHz with independent switching. This switching prevents the interference of the primary user into the secondary user thereby making the filtenna suitable for cognitive radio applications. The proposed filtenna consists of a UWB bow‐tie antenna integrated with a band‐pass filter with reconfigurable property enabled using two PIN diodes. The prototype‐filtering antenna is fabricated and the simulated results are validated using measurements. The presented results show that the antenna exhibits good impedance and radiation characteristics.