Results 21 to 30 of about 25,408 (310)
The eleven antenna: a compact low-profile decade bandwidth dual polarized feed for reflector antennas [PDF]
, 2006 A novel dual polarized ultrawide-band (UWB) feed with a decade bandwidth is presented for use in both single and dual reflector antennas. The feed has nearly constant beam width and 11 dBi directivity over at least a decade bandwidth.
Kildal, Per-Simon +2 more
core +1 more source
International Journal of Antennas and Propagation, 2013 The proposed antenna is a circular microstrip structure excited by four feeds and suspended with artificial magnetic conductors (AMCs). The multifeed circular microstrip antennas can generate a high circularly polarized performance by using a different ...
Sanchai Eardprab +2 more
doaj +1 more source
Multi-Feed Metasurface Antennas: Direct Numerical Design and Experimental Validations
IEEE Access, 2023 This paper provides new designs and realizations of leaky-wave (LW) metasurface (MTS) antennas fed at multiple points. The design technique is based on the direct integral-equation solution by the Method of Moments (MoM).
Modeste Bodehou +4 more
doaj +1 more source
Multi-Port Patch Antennas for Flexible Power Combining and Feeding Choice
IEEE Access, 2018 Patch antennas with multiple feeds are proposed in this paper. The antennas consist of a traditional square patch and feeding probes that are set in a line orthogonal to the polarization direction.
Wen Duan +4 more
doaj +1 more source
High efficiency multifrequency feed [PDF]
, 1974 Antenna systems and particularly compact and simple antenna feeds which can transmit and receive simultaneously in at least three frequency bands, each with high efficiency and polarization diversity are described.
Ajioka, J. S. +2 more
core +1 more source
Molecular Oncology, EarlyView.We show that the majority of the 18 analyzed recurrent cancer‐associated ERBB4 mutations are transforming. The most potent mutations are activating, co‐operate with other ERBB receptors, and are sensitive to pan‐ERBB inhibitors. Activating ERBB4 mutations also promote therapy resistance in EGFR‐mutant lung cancer.
Veera K. Ojala +15 more
wiley +1 more source
Random Beam-Based Non-Orthogonal Multiple Access for Low Latency K-User MISO Broadcast Channels
Sensors, 2021 In this paper, we propose random beam-based non-orthogonal multiple access (NOMA) for low latency multiple-input single-output (MISO) broadcast channels, where there is a target signal-to-interference-plus-noise power ratio (SINR) for each user.
Jung Hoon Lee, Yunjoo Kim, Jong Yeol Ryu
doaj +1 more source
Phased-array antenna phase control circuit using frequency multiplication [PDF]
, 1975 Circuit separates out, from multiplied signals, antenna element signals which have desirable phase angles and feeds them to appropriate antenna elements of phased array.
Caron, P. R., Mailloux, R. J.
core +1 more source
Dual feeding active integrated antenna
Electronics Letters, 2002 A dual feeding active integrated antenna with high isolation between the Tx and Rx ports of a single triangular patch antenna is presented. The proposed antenna suppresses the third harmonics and isolates the Tx signal at the Rx ports to a high degree. The measured results of the return loss, isolation, and radiation patterns are provided.
Byoung Moo Lee +2 more
openaire +1 more source
Tumour–host interactions in Drosophila: mechanisms in the tumour micro‐ and macroenvironment
Molecular Oncology, EarlyView.This review examines how tumour–host crosstalk takes place at multiple levels of biological organisation, from local cell competition and immune crosstalk to organism‐wide metabolic and physiological collapse. Here, we integrate findings from Drosophila melanogaster studies that reveal conserved mechanisms through which tumours hijack host systems to ...
José Teles‐Reis, Tor Erik Rusten
wiley +1 more source