The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
In this paper, the generation and steering of beams carrying orbital angular momentum utilizing a custom-designed circular antenna array has been demonstrated at 28 GHz. A steering angle as large as 30 degrees for an orbital angular momentum (OAM) beam has been achieved. The effect of number of antennas and the distance from antennas to the array center to the quality of beam generation and beam steering...
In this paper, a new miniaturized ultra-wideband (UWB) antenna fed by coplanar waveguide (CPW) is proposed. Gear-shaped structures are employed around the circular disc radiator to impove the current distribution for the antenna miniaturization. Moreover, the gear-shaped structures can produce a wide impedance bandwidth and miniaturization structure. The antenna exhibits a wider bandwidth characteristic...
A new frequency and pattern reconfigurable antenna is proposed in this paper. Both frequency and pattern reconfigurations are effectively realized by using the microstrip double fed ports and four PIN diodes on the annular slot. At the low frequency band (1800MHz) and high frequency band(2400MHz), the antenna has four different patterns which are almost omnidirectional scanning and can be used to...
A multiband MIMO antenna for USB dongle in LTE operation has been presented in this paper. The two unit antennas are placed identically and symmetrically on two same plastic carriers located at the top edge of the ground, each of which is 25mm×12mm. The unit antenna is designed to operate in dual zeroth-order resonant modes, to cover the lower-band at LTE band 13 (746–787MHz), conventionally GSM850/900...
In this letter, a new compact antenna design with triple-sense circular polarization (CP) is presented for ultra-wideband (UWB) communication applications. The UWB property is obtained by utilizing a compact complementary planar monopole. In order to achieve multiband CP waves on base of UWB operation, the measurement has been taken such as etching a T-shaped slit in the antenna ground and adding...
A novel method of designing broadband microstrip antenna is proposed in this paper. By embedding a pair of Cross-shaped slots placed close to the non-radiating edges of a microstrip patch and adding an air layer between the substrate and the ground, the broadband character can be achieved. What's more, the formulas for calculating the two resonant frequencies have been experimentally deduced. Employing...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.