Results 181 to 190 of about 771,647 (263)

Isolation Enhancement for MIMO Dielectric Resonator Antennas Using Dielectric Superstrate

IEEE Transactions on Antennas and Propagation, 2021
This communication proposes a novel decoupling approach for multiple-input multiple-output (MIMO) dielectric resonator antennas (DRAs) using a dielectric superstrate above the array.
Min Li, S. Cheung
semanticscholar   +1 more source

A Novel Single-Feed Filtering Dielectric Resonator Antenna Using Slotline Stepped-Impedance Resonator

IEEE Transactions on Circuits and Systems - II - Express Briefs, 2021
A novel single-feed filtering dielectric resonator antenna (FDRA) with quasi-elliptic bandpass response is proposed in this brief. The proposed FDRA consists of a shunted slotline stepped-impedance resonator (SSIR), a rectangular dielectric resonator ...
Chuanyun Wang, Zhiwen Han, Haiwen Liu, Pin Wen, Lina Wang, Xiqiang Zhang   +5 more
semanticscholar   +1 more source

Tunable terahertz circularly polarized dielectric resonator antenna

, 2021
A circularly polarized (CP) dielectric resonator (DR) antenna (DRA) is implemented and numerically analyzed for terahertz (THz) applications. A composite of different deformed geometries silicon based DRs is utilized for obtaining the orthogonal modes ...
Richa Gupta, G. Varshney, R. Yaduvanshi
semanticscholar   +1 more source

Temperature-Stable x(Na0.5Bi0.5)MoO4–(1–x)MoO3 Composite Ceramics with Ultralow Sintering Temperatures and Low Dielectric Loss for Dielectric Resonator Antenna Applications

, 2021
Fifth-generation mobile communication systems provide a huge market for microwave dielectric materials, especially in the manufacture of dielectric resonators, filters, substrates, and antennas.
Shu‐Zhao Hao, Di Zhou, Chao Du, L. Pang, C. Singh, S. Trukhanov, A. Trukhanov, A. Sombra, J. Varghese, Qiang Li, Xiu-Qun Zhang   +10 more
semanticscholar   +1 more source

Resonant Frequency Stability of the Dielectric Resonator on a Dielectric Substrate

IEEE Transactions on Microwave Theory and Techniques, 1981
A simple approximate method for predicting the resonant frequencies of TE modes of dielectric resonators is developed. By using this method, an analytical expression is derived for the resonant frequency stability of the dielectric resonator on a dielectric substrate, and the effect of the substrate on the stability is studied.
T. Higashi, T. Makino
openaire   +1 more source

Temperature sensitivity of dielectric resonators and dielectric resonator oscillators

Proceedings of the 42nd Annual Frequency Control Symposium, 1988., 2003
Experiments were performed on L-band and S-band dielectric resonators (DRs) and direct-resonator-based oscillators (DROs) to investigate the details of their behavior with variation in temperature. Measurements were performed using commercially available Zr/Sn titanate and barium tetratitanate dielectric resonator materials enclosed in metal cavities ...
M.J. Loboda, T.E. Parker, G.K. Montress
openaire   +1 more source

Wideband Circularly Polarized Substrate-Integrated Embedded Dielectric Resonator Antenna for Millimeter-Wave Applications

IEEE Transactions on Antennas and Propagation, 2020
A singly fed wideband circularly polarized (CP) substrate-integrated dielectric resonator antenna (SIDRA) is proposed for millimeter-wave (mm-wave) applications.
Meidi Yang, Y. Pan, Yu‐Xiang Sun, K. Leung   +3 more
semanticscholar   +1 more source

Quad-Band Quad-Sense Circularly Polarized Dielectric Resonator Antenna for GPS/CNSS/WLAN/WiMAX Applications

IEEE Antennas and Wireless Propagation Letters, 2020
This letter presents the design and study of a novel aperture coupled cylindrical dielectric resonator antenna (cDRA). Unique aspects of the proposed antenna design are that proposed aperture can excite six different hybrid radiating modes (HEM11δ ...
Anand Sharma, Gourab Das, Surbhi Gupta, R. Gangwar   +3 more
semanticscholar   +1 more source

Resonant frequency of dielectric resonator

Proceedings RAWCON 98. 1998 IEEE Radio and Wireless Conference (Cat. No.98EX194), 2002
In this paper, an effective dielectric constant (EDC) has been introduced in an axial attenuation constant of dielectric waveguide model (DWM) method to calculate more accurately the resonant frequency of the TE/sub 01/spl delta// mode of a dielectric resonator (DR) in an MIC environment.
null Juseop Lee, null Sang-Min Han, null Young-Sik Kim   +2 more
openaire   +1 more source

Resonances of a "Pillbox" Dielectric Resonator

1978 8th European Microwave Conference, 1978
Resonant frequency, quality factor and field plots are discussed for a circular-cylindrical dielectric resonator. These quantities are calculated in the limit ?r ??. The method is a perturbation technique based on an expansion in the (small) parameter (1/??r).
M. Verplanken, J. Van Bladel
openaire   +1 more source