US6853344B2 - Radial line slot antenna - Google Patents antenna feeder disposed radial line Prior art date ... “A Feeding Circuit for Concentric Arrays of Radial Line Slot Antenna”, M. ISHII, T. KOSHIO, ... Electrically Reconfigurable Radial Waveguides and Their ... Electrically Reconfigurable Radial Waveguides and Their Potential Applications in Communications and Radars ... radial-line slot array antenna with electrically beam ... A Beam Steering Radial Line Slot Array (RLSA) Antenna with ... A beam steering radial line slot array (RLSA) antenna with reconfigurable operating frequency is proposed in this paper. The RLSA antenna is fed by an ...
RADIAL LINE SLOT ANTENNAS FED BY A ... - 東京農工大学
Define linebacker. linebacker synonyms, linebacker pronunciation, linebacker translation, English dictionary definition of linebacker. n. Abbr. LB Football Any of the defensive players forming a second line of defense behind the players on … US4939527A - Distribution network for phased array antennas… A distribution network for a modified space-fed phased array antenna consists of a planar array of radiating slots distributed along a coplanar wall in each of an ensemble of parallel waveguides. US7583233B2 - RF Receiving and transmitting apparatuses having… A log-periodic antenna having a layer of dielectric media interposed between a microstrip log-periodic portion and a slot log-periodic portion where an array of two or more log-periodic antennas that may be placed about vehicles, such as …
the conductor loss of conventional microstrip line is high (ref. 1) and consequently the feed network loss of patch antenna arrays is also high. The high loss lowers the array efficiency (rel_. 2 and 3), and in addition lowers the G/T ratio in a receiving array. Recently a radial line slot antenna array has been demonstrated to have high gain ...
Planar slot‐array antenna fed by an oversized quasi‐TEM waveguide ... Optimization technique for linearly polarized radial-line slot-array antennas using the ... ECE 222D - Advanced Antenna Design Radiation from slots, equivalent impedance, slot arrays. Collin pp. 261- ... 697- 701; Ando 1985 - Radial Line Slot Array ... arrays. Microstrip antenna impedance. Substrate-integrated Antennas at 60/77/140/270 GHz - Agency for ... Keywords—millimeter wave antenna, planar antenna, tapered slot antenna, substrate .... The planar linearly polarized radial line slot array antenna exhibits the ... Agnese Mazzinghi | LinkedIn
A log-periodic antenna having a layer of dielectric media interposed between a microstrip log-periodic portion and a slot log-periodic portion where an array of two or more log-periodic antennas that may be placed about vehicles, such as …
In an RLS antenna, the present invention allows adjusting the optimum positional relationship between the feeder section of the feeder disk and the feeder section of the antenna disk, simply, quickly and at high accuracy by a visual check, so that mass production becomes possible, and an increase in performance and a decrease in cost are ... BEAM BROADENED RADIAL LINE SLOT ARRAY ANTENNA FOR FIFTH ... Radial line slot array antenna with broad beam is easily realized at frequencies in the lower part of super high frequency band. But emerging broadband mobile communication systems like the fifth generation target frequencies in the upper part of the band and beyond. SELECTION OF BEAM SQUINTING DESIGN PARAMETERS FOR OPTIMAL LP ... The linearly polarized radial line slots array antenna exhibits poor return loss. This problem was tackled by imploring the beam squinting and reflection cancelling slots techniques. This paper suggests the use of a numerical solution for selection RADIAL WAVEGUIDE SLOT ARRAY ANTENNA DESIGN AND IMPLEMENTATION ... and antenna design modeling in the software environment have been presented, simulation analysis was performed and the optimum results were obtained for 2.4GHz RWSA antenna. Radial Waveguide Slot array antenna was successfully fabricated. Then, return loss Radiation pattern and received signal strength were measured and performed.
PERFORMANCE STUDIES OF RADIAL LINE SLOT ARRAY (RLSA) ANTENNA AT 5.8 GHz ON DIFFERENT MATERIALS Omar Abdul Aziz Tharek Abdul Rahman 9.1 INTRODUCTION The type of dielectric material used as radial cavity in the Radial Line Slot Array (RLSA) antenna structure would influence the characteristics of the antenna, particularly its Radiation Pattern.
The quest to optimize performance of the radial line slots array (RLSA) antenna continued to unfold. Attempt is made at studying slots width variation in radial line slot array antenna (RLSA) and its effect on the 3dB half power beam width (3dB HPBW) in this submission. It is aimed at formulating a polynomial equation that best describes the ... A Beam Steering Radial Line Slot Array (RLSA) Antenna with ... A beam steering radial line slot array (RLSA) antenna with reconfigurable operating frequency is proposed in t | Mohd Faizal Jamlos, Omar Abdul Aziz, Tharek Abdul | Journal of Electromagnetic Waves and Applications | 270-GHz LTCC-Integrated Strip-Loaded Linearly Polarized ... Abstract: A planar linearly polarized radial line slot array (RLSA) antenna is proposed to achieve a high gain with improved impedance matching and suppressed cross-polarization levels at a 270-GHz band. The proposed antenna is integrated in low-temperature cofired ceramic (LTCC).
Figure 5.1 Dual-polarized radial line slotted array developed by Takahashi et. al. ...... between slotted waveguide antenna arrays [28, 30-33, 36] to microstrip ... US9214740B2 - Radial line slot array antenna - Google Patents