Results 91 to 100 of about 4,418 (227)

Measuring Harmonic Mixer in the Frequency Range from 78.33 to 118.10 GHz

Доклады Белорусского государственного университета информатики и радиоэлектроники
The issues of realization of ultra-high-frequency measuring mixers on harmonics with a built-in frequency diplexer and the relevance of their application are considered. A mathematical model of a measuring harmonic mixer of the millimeter-wave range as a
I. A. Zakharov, A. V. Gusinsky, A. V. Saikov, M. M. Kasperovich, D. A. Kondrashov, M. S. Svirid   +5 more
doaj   +1 more source

Antenna pattern shaping, sensing, and steering study Final report [PDF]

Design of steerable satellite antenna with beam pattern sensing ...
Bigelow, S. C., Killian, J. D., Power, D. W., Smith, P. E., Jr., Whiteside, G. D.   +4 more
core   +1 more source

Design and Fabrication of a Compact SIW Diplexer in C-Band

Iranian Journal of Electrical and Electronic Engineering, 2019
In this paper, a compact 6.8/7.6 GHz diplexer is provided with the help of substrate integrated waveguide (SIW) structures. The use of this structure is for satellite communication systems. The designed diplexer includes a T-junction.
N. Kiani, M. Afsahi
doaj  

Method and apparatus for measuring distance [PDF]

, 1988
The invention employs a continuous wave radar technique and apparatus which can be used as a distance measuring system in the presence of background clutter by utilizing small passive transponders.
Kobayashi, Herbert S., Lichtenberg, Christopher L., Shores, Paul W.   +2 more
core   +1 more source

Status of Resonant Diplexer Development for high-power ECRH Applications

EPJ Web of Conferences, 2012
Characteristics of ring resonator diplexers for high-power ECRH are briefly reviewed. Commissioning experiments performed on ASDEX Upgrade with the diplexer Mk IIa are presented, which demonstrate slow and fast switching of the power between two ...
Bongers W., Fritz E., Doelman N., van den Braber R., Wagner D., Stober J., Schütz H., Schubert M, Purps F., Noke F., Müller S., Monaco F., Michel G., Maraschek M., Hollmann F., Grünwald G., Erckmann V., Filipovic E., Lechte C., Plaum B., Kasparek W., Krijger B., Petelin M., Lubyako L., Bruschi A., Sakamoto K.   +25 more
doaj   +1 more source

Compact and High-Selectivity SIW Multi-Channel Diplexers and Dual-Band Filters Based on the Lowest-Order Dual-Mode Box-Like Topology

IEEE Access
This paper proposes a class of compact, sharp roll-off, and substrate-integrated-waveguide (SIW) multi-channel diplexers and dual-band filters based on the lowest-order dual-mode (DM) box-like topology.
Pei-Ling Chi, Ta-Chih Yeh, Tao Yang
doaj   +1 more source

Design for SAW Antenna-Plexers with Improved Matching Inductance Circuits. [PDF]

Micromachines (Basel), 2023
Yang MY, Wu RB.
europepmc   +1 more source

Space-based Aperture Array For Ultra-Long Wavelength Radio Astronomy

, 2015
The past decade has seen the rise of various radio astronomy arrays, particularly for low-frequency observations below 100MHz. These developments have been primarily driven by interesting and fundamental scientific questions, such as studying the dark ...
Arts, Michel, Belien, Frederik, Bentum, Mark, Boonstra, Albert-Jan, Klein-Wolt, Marc, Rajan, Raj Thilak, Saks, Noah, van der Veen, Alle-Jan   +7 more
core   +1 more source

Advanced 30/20 GHz multiple-beam antennas for communications satellites [PDF]

Design concepts under development utilize two separate spacecraft antenna systems, one uplink at 30 GHz and the other a downlink at 20 GHz, where each antenna provides multiple fixed and scanning beams.
Myhre, R. W.
core   +1 more source

Design of integrated wideband WR34‐band diplexer‐antenna array module for exploration of monolithic metal 3‐D printing for space applications

IET Microwaves, Antennas & Propagation
The design of a wideband diplexer integrated with a 16‐slot Continuous Transverse Stub (CTS) antenna array is presented. The diplexer‐antenna array module covers the whole WR34 band. The Tx and Rx bands cover 21.7–26 and 27.5–33 GHz ranges, respectively.
Povilas Vaitukaitis, Jiayu Rao, Kenneth Nai, Jiasheng Hong   +3 more
doaj   +1 more source