Zobrazeno 1 - 10
of 39
pro vyhledávání: '"Art Morris"'
Publikováno v:
International Journal of Antennas and Propagation, Vol 2014 (2014)
In today’s mobile device market, there is a strong need for efficient antenna miniaturization. Tunable antennas are a very promising way to reduce antenna volume while enlarging its operating bandwidth. MEMS tunable capacitors are state-of-the-art
Externí odkaz:
https://doaj.org/article/ba24d905bc544556bd18d4ff05672a90
Publikováno v:
IEEE Transactions on Antennas and Propagation. 66:2599-2604
Intrinsically narrowband and highly tunable systems are a promising way to address the bandwidth challenge of long-term evolution. However, narrowband antennas exhibit low efficiencies. This communication details the loss mechanism of narrowband ante
Publikováno v:
2019 IEEE MTT-S International Microwave Symposium (IMS).
Linearity characteristics of capacitive tuners are an important issue for today’s cellphone market. Antenna tuners have become necessary in mobile devices due to the RF spectrum expansion in the low frequency range. Capacitive tuners connected dire
Publikováno v:
2018 Asia-Pacific Microwave Conference (APMC).
In this paper, we present the linearity effects of many tunable capacitors connected in parallel in a 50-ohm system. Linearity of tunable capacitors is of key importance to the current cellphone market and to future 5G technology. Typically, these de
Publikováno v:
2018 Asia-Pacific Microwave Conference (APMC).
In this paper, we explain how the board manufacturers' tolerance can affect the extraction of capacitive tuner parameters, thus increasing the variability and uncertainty of the actual model. Model extraction from measurements are a key element of mi
Publikováno v:
2017 47th European Microwave Conference (EuMC).
This paper presents a new characterization method to measure the RF power handling of capacitive RF MEMS switches. Historically, the RF power handling was characterized by analyzing the pull-in and release voltage shift under several RF power setting
Publikováno v:
IET Microwaves, Antennas & Propagation. 9:1015-1020
Antenna tuning is a very promising technique to cope with the expansion of the mobile communication frequency spectrum. Tunable antennas can address a wide range of operating frequencies, while being highly integrated. In particular, high-Q antennas
Publikováno v:
Barrio, S C D, Hejselbæk, J, Morris, A & Pedersen, G F 2017, Combining Antenna and Ground Plane Tuning to Efficiently Cover Tv White Spaces on Handsets . in 2017 11th European Conference on Antennas and Propagation (EuCAP) . IEEE, pp. 2964-2968, 11th European Conference on Antennas and Propagation (EuCAP), Paris, France, 19/03/2017 . https://doi.org/10.23919/eucap.2017.7928202
With the future LTE auction for TV white spacesat 600 MHz, there is a strong need for efficient handset antennasoperating at very low frequencies. This paper proposes a tunableantenna design for the low bands of LTE. In this design, not onlythe anten
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::383b71cc5444daaf909c3b51d48d55c4
https://vbn.aau.dk/da/publications/c0747ab4-07b8-44e6-9a2d-98f2b8bcab87
https://vbn.aau.dk/da/publications/c0747ab4-07b8-44e6-9a2d-98f2b8bcab87
Publikováno v:
International Journal of Antennas and Propagation, Vol 2014 (2014)
Barrio, S C D, Morris, A & Pedersen, G F 2014, ' Antenna Miniaturization with MEMS Tunable Capacitors : Techniques and Trade-offs ', International Journal of Antennas and Propagation, vol. 2014, Article ID 709580 . https://doi.org/10.1155/2014/709580
Barrio, S C D, Morris, A & Pedersen, G F 2014, ' Antenna Miniaturization with MEMS Tunable Capacitors : Techniques and Trade-offs ', International Journal of Antennas and Propagation, vol. 2014, Article ID 709580 . https://doi.org/10.1155/2014/709580
In today’s mobile device market, there is a strongneed for efficient antenna miniaturization. Tunable antennas area very promising way to reduce antenna volume while enlargingits operating bandwidth. MEMS tunable capacitors are state-ofthe-art in t
Autor:
Morten Lykkegaard Christensen, Gert Frølund Pedersen, S. Caporal Del Barrio, T. Holmgaard, Art Morris
Publikováno v:
Barrio, S C D, Holmgaard, T, Christensen, M, Morris, A & Pedersen, G F 2014, ' Screen-printed silver-ink antennas for frequency-reconfigurable architectures in LTE phones ', Electronics Letters, vol. 50, no. 23, pp. 1665-1667 . https://doi.org/10.1049/el.2014.3237
Screen printing is a proven manufacturing technology enabling highvolume production at low cost. This letter investigates the achievableefficiency of a screen-printed silver antenna structure for 4G mobile phoneimplementation, with a market-ready sol