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- Title
A Hepta-band Frequency Tunable Patch Antenna for Cognitive Radio Applications.
- Authors
Meena, Vijayluxmi; Singh, Prem Pal; Sharma, Sudhir Kumar; Gupta, Ravi
- Abstract
A novel and compact frequency tunable patch antenna for Cognitive radio applications (4-8 GHz) operating on seven different frequencies is presented in this article. Essential characteristics of this antenna are large tuning range and sufficient gain. Radiating patch of the antenna is a circular shaped structure and ground plane is modified with different slotted structure for reconfiguration purpose and capacitors are used to isolate the biasing terminals of the battery from RF power. The radiating patch divided into four parts by cutting slots in required manner and PIN diodes are placed at the appropriate position to reconfigure the antenna. These RF switches vary the length of the slots and also change the resonant frequencies. Frequencies generated by the antenna are 4.62 (4.55-4.68) and 6.68 (6.60-6.84) GHz, 5.33 (5.19- 5.47), 5.59 (5.44-5.74), 5.81 (5.70-5.92), 6.12 (5.99-6.26) and 6.96 (6.85-7.15) GHz. Total substrate size of the antenna is 23×24 mm² with thickness of 1.6 mm. Dielectric substrate material used is FR-4 having dielectric constant of 4.4 and loss tangent 0.002 for simulation and fabrication purpose. Parameters of the antenna are analyzed, and simulation and measured results shows an excellent agreement.
- Subjects
RADIO antennas; PIN diodes; ANTENNAS (Electronics); COGNITIVE radio; DIELECTRIC materials; PERMITTIVITY
- Publication
Journal of Nano- & Electronic Physics, 2024, Vol 16, Issue 2, p1
- ISSN
2077-6772
- Publication type
Article
- DOI
10.21272/jnep.16(2).02006