Over the last decade several methods of implementing load bearing antenna structure using CFRP have been reported, including Slotted Waveguide Antenna Stiffened Structure (Swass) [2], and cavity backed slot antenna [3]. US6646618B2 - Low-profile slot antenna for vehicular… A crossed slot antenna, a method of fabricating same and a method of designing same. The antenna includes a cavity structure having conductive material on opposed surfaces thereof; and two slots in said conductive material, the slots … US8941541B2 - Multilevel antennae - Google Patents An apparatus includes an antenna concealed within a portable communication device and configured to operate in non-overlapping frequency bands. The antenna includes an antenna element with a multilevel structure of geometric elements …
The annular ring slot antenna is a broadband antenna very suitable for the incoming wireless communication applications.This antenna, when excited on its fundamental mode, provides an omnidirectional radiation pattern. The slot-ring antenna is one class of radiating structures formed...
PRAJAKTA KULKARNI AND SUNIL MOON: ULTRA-WIDEBAND CO-LOCATED DIVERSITY ANTENNA FOR ENHANCING CHANNEL CAPACITY . 1380 . slot resonators on the feeding structures. The proposed antenna facilitates nearly Omni directional radiation pattern, low envelope correction coefficient, moderate gain, and efficiency. Moreover, BROADBAND ARRAY ANTENNA - Cobham plc pattern control and unique machined/angled apertures to solve difficult installation problems. Also available are special horn designs with bandwidths up to 9:1. These offer the clear advantage of using one antenna to cover larger frequencies instead of having several antennas covering the same frequencies. Nurad currently offers existing horn Design of Broadband Microstrip Patch Antenna Using Stack and ... antenna presented by Borja et al [2] shows that a patch antenna with a fractal boundary exhibits localized modes. A broad band U-slot rectangular patch antenna on a microwave substrate is presented by Tong et al [7]. It is found that the crucial step to design a broad-band -slot patch antenna printed on a microwave substrate.
May 2, 2017 ... The proposed reconfigurable antenna is a closed-slot antenna fed by the CPW ... The scattering parameters, axial ratio, radiation pattern, gain, and the radiation ... Furthermore, the uniplanar antenna is an intrinsic broadband antenna; ..... and polarization reconfigurable designs for annular slot antennas.
Over the last decade several methods of implementing load bearing antenna structure using CFRP have been reported, including Slotted Waveguide Antenna Stiffened Structure (Swass) [2], and cavity backed slot antenna [3]. US6646618B2 - Low-profile slot antenna for vehicular… A crossed slot antenna, a method of fabricating same and a method of designing same. The antenna includes a cavity structure having conductive material on opposed surfaces thereof; and two slots in said conductive material, the slots … US8941541B2 - Multilevel antennae - Google Patents An apparatus includes an antenna concealed within a portable communication device and configured to operate in non-overlapping frequency bands. The antenna includes an antenna element with a multilevel structure of geometric elements … US3902177A - Antenna for direction finders - Google Patents This invention relates to an antenna for direction finders presenting a high sensitivity in a narrow band by making a loop antenna and a shielding tube resonate at any two desired frequencies.
Circularly Polarized Annular-Ring Antenna for 1.6GHz.Broadband Circular Microstrip Antenna with Ring Slots for 2.2GHz.Ultra-Wideband Slot Antenna for Polarization Diversity. Drooped Microstrip Antennas for GPS.
Dual-Band Circularly Polarized Cavity-Backed Annular Slot Antenna for GPS Receiver Wang-Ta Hsieh, Tze-Hsuan Chang, and Jean-Fu Kiang Abstract—A circularly polarized (CP) cavity-backed annular slot antenna for GPS receiver is designed to operate in both the L1 and L2 bands of the Global Positioning System (GPS). The measured impedance Draft Version A Reconfigurable Radiation Pattern Annular ... radiation pattern of the antenna. II. ANTENNA DESIGN AND OPERATION A. Annular slot antenna in DC operating mode Monopole antenna has been the subject of many classic studies for diversity in radiation pattern of an antenna. A monopole antenna has an omnidirectional radiation pattern which is essential for wide range of technologies. The Radio Directional Finding (RDF) Antennas - ThomasNet Standard DF antenna models are typically broadband antennas covering frequencies across the communications bands from HF through UHF or approximately 2.0 MHz to 2700 MHz. The most common design is a cavity-backed annular slot that incorporates ferrite elements for the lower HF frequency range. ... Manufacturer of radio directional finding (RDF ... A Broadband Pattern Diversity Annular Slot Antenna Title: A Broadband Pattern Diversity Annular Slot Antenna: Authors: Gallo, Michele; Antonino-Daviu, Eva; Ferrando-Bataller, Miguel; Bozzetti, Michele; Molina-Garcia ...
CPW Fed Monopole Antenna for Future UWB Diversity Application written by Jasni A , Jaseem A N published on 2018/04/24 with reference data and citations
How is Annular Slot Antenna abbreviated? - TheFreeDictionary In [12], dual-band circularly polarized annular slot antenna is obtained by employing two square slots, a bended microstrip line and a cavity back. As shown in Figure 2(a), antenna 1 is a fold annular slot antenna , and the asymmetric of the slot width will lead to two split orthogonal degenerate modes around 2. Shorted Annular Slot Antenna (ASA) Matched at Three Different ... shorted Annular Slot Antenna (ASA) proposed in this paper operates in three different frequencies with the central frequency at 5.8 GHz. It is fabricated on cheap material and is a compact design suitable for integrating in mobile devices. The annular slot antenna on dielectric material has been described explicitly in [1]. Design of broadband circular patch microstrip antenna with ...
US4839663A - Dual polarized slot-dipole radiating element… Two contiguous half-height waveguides (12, 14) having a common broad wall (16) are provided with a pair of closely spaced equal length slots (20) and a single unbalanced-fed half-wave dipole (24) located parallel to and between the slots …