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Annular ring slot antenna designs with cp radiation

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A new design of a microstrip-line-fed circularly polarized printed ring slot antenna is proposed. Circular polarization (CP) radiation of the proposed design is achieved by introducing proper

DUAL-BAND BEAM SCANNING REFLECTARRAYS AND NOVEL … Dual-band Beam Scanning Reflectarrays and Novel Wideband and Polarization Diversified Planar Antennas. (August 2008) Shih-Hsun Hsu, B.S., National Cheng Kung University; M.S., University of Wisconsin-Madison Chair of Advisory Committee: Dr. Kai Chang The reflectarray antenna has been considered as a suitable candidate to replace the Design of Stacked Microstrip Dual-band Circular Polarized A dual-band CP antenna using single layer patch has been reported in [4], [5]. In [4], an antenna consists of a circular patch and a narrow annular ring is designed. This antenna achieves its CP operation by an equal cross slot embedded on the circular patch. The design of antenna in [5] consists of a small circular patch surrounded by two A broadband circularly polarized antenna of square-ring Examples of RFID-reader antennas include the patch antenna fed by a Wilkinson power divider and the annular-ring slot antenna with a slot-line feed . However, these antennas are too large, and some single-feed single-element patch antennas usually have a narrow circular-polarized (CP) bandwidth , , , . Annular‐ring slot antenna designs with circular ...

A Compact Annular Ring Microstrip Antenna for WSN Applications

DESIGN AND INVESTIGATION OF A DUAL-BAND ANNULAR RING SLOT ... analyze the annular ring slot antenna for the TM modes [20]. In this analysis, the feeding line is not considered. Here, we only consider the TM0m modes in the annular ring slot antenna, since only the TM0m modes can produce a monopole like radiation pattern. For the TM0m modes, the fleld inside the structure must be symmetric about the z axis. Microstrip‐line‐fed printed shorted ring‐slot antennas for ... Designs of circularly polarized printed shorted annual and square ring‐slot antennas are proposed. Circular polarization (CP) radiation of the shorted ring‐slot antennas is achieved by selecting a proper length of the shorted section in the ring slot, which is about 3.9 and 8% of the mean circumference of annular and square ring slots, respectively, and feeding the ring slot using a ...

(PDF) Reconfigurable Annular Ring Slot Antenna with Circular ...

Miniaturized Annular Ring Loaded Patch Antennas ... Miniaturized annular ring loaded patch ... development of miniaturized antenna designs. Annular ring patch ... DESIGN OF CPW-FED DUAL-BAND CIRCULARLY- POLARIZED ANNULAR ... POLARIZED ANNULAR SLOT ANTENNA WITH TWO ... designs to realize CP operation. ... afiecting the other working band and CP operation. For this annular-ring structure, ... IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, VOL. 54, NO ...

Shorted Annular Slot Antenna ... Matched at Three Different Frequencies ... The placement of a short along the slot circumference rotates the radiation pattern on ...

C. Y. D. Sim 1,*, ; W. C. Weng 2,*, ; M. H. Chang 1 and; B. Y. Chen 1; Article first published online: 6 NOV 2014. DOI: 10.1002/mmce.20867 Dual-Frequency Annular-Ring Slot Antennas Fed by CPW ... ANTENNA DESIGNS The con?gurations of dual-frequency printed annular-ring slot antennas fed by coplanar waveguide and microstrip ... For the dual-frequency annular ... Circularly polarized co-designed filtering annular slot ... In this paper, a compact circularly polarized co-designed filtering annular slot antenna (ASA) is proposed. The antenna comprises a distributed capacitor-loaded annular slot radiator to produce circular polarization (CP) radiation, which is seamlessly integrated with a microstripline bandpass filter (BPF) to enhance out-of-CP-band suppression.