Pattern and frequency reconfigurable annular slot antenna using… There, fore from Fig. The path difference between , is while the path difference beand is and can be easily tween deduced geometrically. Slot type planar antennas - Thomson Licensing The present invention relates to a planar antenna comprising a resonating slot 12 dimensioned to operate at a given frequency, the slot being realized on a substrate 10 and supplied by a US6018320A - Apparatus and a method relating to antenna systems…
Circular Patch loaded Annular Ring Microstrip Antenna using L ...
A NOVEL DESIGN OF A MICROSTRIP- FED SHORTED SQUARE-RING SLOT ... applied to a cavity-backed annular slot antenna, and the antenna uses a coaxial probe feed to produce CP radiation. Several microstrip-fed ring-slot antennas producing CP radiation are proposed [2–4]. Chen et al. [2] employs the concept of [1] to achieve the 3-dB axial-ratio (AR) bandwidth of 8.4% and 8.1% for annual and square ring-slot YO3DAC - Printed and Microstrip Antennas - qsl.net Bow-Tie Antenna with Microstrip-fed for C and X bands; Bow-Tie Slot Antenna for 2.4GHz, 5.2GHz and 5.8GHz; Circularly Polarized Loop Antenna with Parasitic Element for 5.6GHz; Compact Slotted Bow-tie Patch Antenna; Coupled Loop Antenna for 820MHz to 2.2GHz; CPW-Fed Curved Bow-Tie Slot Antenna for 2.4GHz and 5.5GHz COMPACT DUAL-BAND ANNULAR-RING SLOT ANTENNA WITH MEANDERED ...
Slot antennas are used typically at frequencies between 300 MHz and 24 GHz. The slot antenna is popular because they can be cut out of whatever surface they are to be mounted on, and have radiation patterns that are roughly omnidirectional (similar to a linear wire antenna, as we'll see). The polarization of the slot antenna is linear.
Bandwidth Enhancement of L-Probe Proximity-Fed Annular Ring Microstrip Slot Antenna A. K. Singh, (Research Scholar) Ravi Kumar Gangwar Binod K. Kanaujia Electronics Engineering, Electronics Engineering, Electronics and Commn. Gain enhancement of annular slot antennas | Request PDF Gain enhancement of annular slot antennas. A cross-shaped microstrip-fed ring slot antenna with large bandwidth is presented experimentally in this paper. The characteristics of the antenna ... Chapter 5 Impedance of Slot Antennas 5.1 Introduction present calculations for a slot fed by a microstrip line with a bolometer detector centered between the two slots. The feed line is electromagnetically coupled to the slot antennas so no direct connections to the ground plane are necessary which simplifies the fabrication of the feed network and antennas. We present calculations Slotline-fed circularly polarized annular-ring slot Abstract: A novel single-layer, microstrip-to- slotline transition technique for coupling a circularly polarized annular-ring slot antenna in the UHF band is presented. In the proposed design, circular polarization is generated using a proper asymmetry within the annular-ring slot structure and feeding the annular-ring slot using a slotline feed at 135° from the asymmetry.
MARSA - Microstrip Annular-Ring Slot Antenna |…
US4547779A - Annular slot antenna - Google Patents
A planar antenna for circular polarized microwaves incorporates a substrate sandwiched between conductive layers having a plurality of openings arranged in a rectangular array, with a pair of perpendicular excitation probes supported on …
Navigation annular slot ring antenna BarCited By (2). Abstract: By etching longitudinal slots on the annular slot ring antenna top metallic surface of the substrate integrated waveguide (SIW), an integrated slot-array antenna is proposed in ..Patent Citations (17) Multi-band Annular Ring Microstrip Antenna with Defected ... ABSTRACT An annular ring microstrip antenna (ARMSA) with a defected ground structure for multi-band operation is being proposed. Defected ground structure is produced by integrating a circular slot in the ground plane having different centre with the annular ring radiator patch. A Hexagonal Shape Microstrip Slot Antenna for ... - IJSER
Microstrip patch antenna (46), feed structure (48), and matching circuit (50) designs for an RFBD tag (10). A balanced feed design using balanced feeds coupled by a shorting stub (56) to create a virtual short between the two feeds so as … US2637814A - Aerial system - Google Patents