Title :
Helical meander line antenna and its spatial power combining for circular polarization
Author :
Yoon, Seunghwan ; Besoli, Alfred Grau ; Lee, Gye-An ; De Flaviis, Franco
Author_Institution :
Dept. of Electr. Eng. & Comput. Sci., California Univ., Irvine, CA, USA
Abstract :
The objectives of designing meander line antennas are miniaturization of antenna and application of spatial power combining to make circular polarization. A linearly polarized planar antenna is proposed. Helical meander line is printed on both sides of the antenna substrate. It is appropriate to reduce the size of low resonant frequency antennas. The meander line antennas with opposite polarization directions can spatially combine differential outputs of a power amplifier without combiner. Circular polarization antenna is built by orthogonally placing and combining the linear polarization of the antennas. This concept can be applied to design a power amplifier, which is combined with the output of power limited CMOS amplifiers.
Keywords :
CMOS integrated circuits; antenna theory; electromagnetic wave polarisation; power amplifiers; power combiners; radiofrequency amplifiers; waveguide antennas; antenna miniaturization; antenna substrate; circular polarization; helical meander line antenna; low resonant frequency antenna size; meander line antenna design objectives; orthogonally placed antenna linear polarizations; polarization directions; power amplifier design; power amplifier outputs; power limited CMOS amplifier outputs; printed meander line; spatial power combining; Current; Dielectric substrates; Dipole antennas; Directive antennas; Helical antennas; Planar arrays; Polarization; Power amplifiers; Radio frequency; Resonant frequency; Meander line; circular polarization; mutual coupling; spatial power combining;
Conference_Titel :
Antennas and Propagation Society International Symposium, 2005 IEEE
Print_ISBN :
0-7803-8883-6
DOI :
10.1109/APS.2005.1551789
