Title :
On the use of lumped filters for designing dual-band planar antennas with omnidirectional and directional radiation patterns
Author :
Patron, Damiano ; Piazza, Daniele ; Dandekar, Kapil R.
Author_Institution :
Electr. & Comput. Eng. Dept., Drexel Univ., Philadelphia, PA, USA
Abstract :
Modern 802.11 ac wireless systems are capable of dual-band operations in the 2.4 and 5 GHz bands to enhance bandwidth and data throughput. These systems typically employ separated radiators for the two bands, increasing cost and space requirements. In this paper, we describe two approaches that can be used to design a single planar antenna which can resonate at 2.4 and 5 GHz, as well as generate omnidirectional and directional radiation patterns. In the first approach, we used a single set of dual-band elements, where the two bands are separated through lumped inductors and capacitors. In the second approach, we designed two independent sets of elements for each band, connected to the central RF port by lumped diplexers. We discuss the designs and the measured results for these two approaches, highlighting the advantages and limitations of the respective radiation characteristics.
Keywords :
UHF antennas; UHF filters; antenna radiation patterns; microwave antennas; microwave filters; multifrequency antennas; omnidirectional antennas; planar antennas; 802.11 ac wireless systems; central RF port; data throughput; directional radiation patterns; dual-band elements; dual-band planar antenna design; frequency 2.4 GHz; frequency 5 GHz; lumped capacitors; lumped diplexers; lumped filters; lumped inductors; omnidirectional radiation patterns; separated radiators; single planar antenna; Dual band; Inductors; Loss measurement; Radio frequency; Resonant frequency; Antennas and Arrays; MIMO; Multi-band RF Circuits and Systems;
Conference_Titel :
Wireless and Microwave Technology Conference (WAMICON), 2015 IEEE 16th Annual
Conference_Location :
Cocoa Beach, FL
DOI :
10.1109/WAMICON.2015.7120378