Zobrazeno 1 - 10
of 26
pro vyhledávání: '"Vamsi Krishna Palukuru"'
Publikováno v:
IET Microwaves, Antennas & Propagation. 7:180-186
In this study, miniaturisation of dual band monopole antennas has been investigated with the screen printed magnetic thick films of cobalt nanoparticle ink. The resonant frequencies of antennas were tuned by printing of the ink with different layer t
Autor:
Rachida Moussa, Mohamed Essaaidi, Mohamed Aghoutane, Arun K. Sowpati, Heli Jantunen, Vamsi Krishna Palukuru
Publikováno v:
Microwave and Optical Technology Letters. 54:1765-1768
A novel approach for dual- and tri-band bandpass filters (BPF) design with independently controlled center frequencies and bandwidths was presented. On the one hand, a stepped impedance resonator (SIR) is designed to operate at the center frequencies
Autor:
Vamsi Krishna Palukuru, Arttu Huttunen, and Erkki T. Salonen, Markus Berg, Heli Jantunen, Sami Myllymäki
Publikováno v:
Progress In Electromagnetics Research C. 23:219-231
An antenna integrated sensor implementation for hand or flnger proximity recognition is developed. Capacitive sensor was installed on the antenna of functional Nokia 6021 phone. The sensitivity of the phone with planar inverted F antenna (PIFA) integ
Publikováno v:
Integrated Ferroelectrics. 114:17-24
A planar inverted-F chip antenna based on a Barium Strontium Titanate—cycloolefin copolymer (BST-COC) polymer composite for 2.4 GHz wrist applications was designed and characterized. A relative permittivity of 13.8 and dielectric loss of 0.0015 at
Autor:
Tomi Kanerva, Toivo Lepistö, Hannu Sillanpaa, Heli Jantunen, Kauko Östman, Vamsi Krishna Palukuru, Juha Hagberg, Riku Makinen, Vesa Pynttari
Publikováno v:
IEEE Transactions on Electronics Packaging Manufacturing. 33:221-227
In this paper, characterization methods are presented with results from test structures printed with varying printing parameters and materials. It is shown that different process parameters affect both physical and electrical material properties and
Autor:
Heli Jantunen, Matti Mäntysalo, Vesa Pynttari, Kensaku Sanoda, Riku Makinen, Vamsi Krishna Palukuru, Juha Hagberg, Tao Hu
Publikováno v:
International Journal of Applied Ceramic Technology. 8:940-946
In this study, 0–3 ceramic–polymer composite substrates are utilized in RF applications in combination with inkjet printing technology. The substrates were fabricated from barium–strontium–titanate and polyphenylene sulfide. The relative perm
Publikováno v:
Journal of the European Ceramic Society. 30:389-394
A tunable microwave phase shifter composed of a low-sintering-temperature, screen-printable barium strontium titanate (BST) film and silver metallization was fabricated on an alumina substrate and co-fired at 900 °C for 3 h. The dielectric propertie
Publikováno v:
Progress In Electromagnetics Research C. 16:195-205
A rectangular dielectric resonator antenna (DRA) based on Barium Strontium Titanate-Cyclic Olefln Copolymer (BST-COC) composite for 2.4GHz wrist application is designed and characterized. The dielectric properties of the composite with » 57 vol.% BS
Autor:
Vamsi Krishna Palukuru, Sami Myllymäki, Erkki Salonen, Markus Berg, Arttu Huttunen, Heli Jantunen
Publikováno v:
Scopus-Elsevier
A capacitive method for measuring hand grip position on a mobile phone equipped with a dual-band planar inverted-F antenna (PIFA) and a monopole antenna was studied using difierent electrode arrangements. A capacitive sensor with a dual-electrode con
Autor:
Vamsi Krishna Palukuru, Heli Jantunen, Riku Makinen, M. V. Kartikeyan, Arun K. Sowpati, Vesa Pynttari
Publikováno v:
Progress In Electromagnetics Research Letters. 13:59-65
This paper shows that L-shaped monopole antenna on PPS manufactured by inkjet printing of nano silver ink is able to produce very competitive overall antenna performance against Rogers copper foil structures if the thickness of the printed conductor