US6646618B2 - Low-profile slot antenna for vehicular… In a different aspect, the present invention also provides a method of designing a crossed slot antenna capable of receiving both circularly polarized radio frequency signals and linearly polarized radio frequency signals, the crossed slot … US6297774B1 - Low cost high performance portable phased array… Each feeding subnetwork 21 and 23 has eight feed network columns 26 and 28, and each feed network column 26 and 28 is designed as a parallel-series feed network scheme, having a plurality of serial feeder lines 35, and each serial feeder … US6218998B1 - Toroidal helical antenna - Google Patents A low profile, i.e. short, vertically polarized antenna would be useful for a number of applications. These applications include portable communications equipment, such as on air, sea and land vessels and vehicles; where the physical length … US3623114A - Conical reflector antenna - Google Patents
Radial Microstrip Slotline Feed Network for Circular
www.science.gov www.science.gov Radial Line Slot Antennas | SpringerLink A radial line slot antenna (RLSA) is a circularly polarized high efficiency planar array. Two types of RLSAs, a single-layered and a double-layered one, were released commercially for 12 GHz band direct broadcast satellite (DBS) reception. Design of a linearly-polarized radial line slot antenna ...
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Paper Abstract and Keywords: Presentation: 2010-10-15 13:00 Design and Fabrication of a Linearly-Polarized Radial Line Slot Antenna with Reflection-Canceling Posts
A jammer can be located in the main beam of a line-of-sight (LOS) receiving antenna. This jammer is likely to be displaced from the exact direction of the desired communication signal, either vertically or horizontally or both.
Radial Line Slot Antennas | Request PDF - researchgate.net 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.
In antenna theory, we are concerned with the polarization of the field in the plane orthogonal to the direction ofIt is incident upon a linearly polarized receiving antenna, which would transmit the field.This is a RHCP field with respect to the outward radial direction rˆ . Its. polarization vector is.
A reflection cancelling slot set in a linearly polarized Abstract: A radial line slot antenna (RLSA) is a high-gain and high-efficiency planar antenna. A linearly polarized RLSA (LP-RLSA) is attractive for applications of various subscriber radio systems. However, the slot arrangement for linear polarization gives rise to serious reflection from slots, which disturbs the normal antenna operation. Design of a linearly-polarized radial line slot antenna Design of a linearly-polarized radial line slot antenna with reflection-cancelling posts #Ken Saeki, Hideki Ueda, Jiro Hirokawa, Makoto Ando Department of Electrical and Electronic Engineering, Tokyo Institute of Technology
A linearly polarized radial line slot antenna - IEEE ... Abstract: A design for linearly polarized radial line slot antenna (RLSA) is proposed. A novel slot arrangement is presented which couples to the rotationally symmetric guided waves to produce a uniform aperture distribution with linear polarization.