Journal ArticleDOI
Asymmetric-Circular Shaped Slotted Microstrip Antennas for Circular Polarization and RFID Applications
Reads0
Chats0
TLDR
In this article, a single-feed configuration based asymmetric-circular shaped slotted square microstrip patches are adopted to realize the compact circularly polarized microstrip antennas with slits.Abstract:
Novel asymmetric-circular shaped slotted microstrip patch antennas with slits are proposed for circularly polarized (CP) radiation and radio frequency identification (RFID) reader applications. A single-feed configuration based asymmetric-circular shaped slotted square microstrip patches are adopted to realize the compact circularly polarized microstrip antennas. The asymmetric-circular shaped slot(s) along the diagonal directions are embedded symmetrically onto a square microstrip patch for CP radiation and small antenna size. The CP radiation can be achieved by slightly asymmetric (unbalanced) patch along the diagonal directions by slot areas. Four symmetric-slits are also embedded symmetrically along the orthogonal directions of the asymmetric-circular shaped slotted patch to further reduce antenna size. The operating frequency of the antenna can be tuned by varying the slit length while keeping the CP radiation unchanged. The measured 3-dB axial-ratio (AR) bandwidth of around 6.0 MHz with 17.0 MHz impedance bandwidth is achieved for the antenna on a RO4003C substrate. The overall antenna size is 0.27λo × 0.27λo × 0.0137λo at 900 MHz.read more
Citations
More filters
Journal ArticleDOI
Experimental Validation of Performance Limits and Design Guidelines for Small Antennas
Daniel F. Sievenpiper,David Carlos Dawson,Minu M. Jacob,Tumay Kanar,Sanghoon Kim,Jiang Long,Ryan Quarfoth +6 more
TL;DR: In this article, the theoretical performance limit for small antenna performance has been validated by all available experimental evidence and the theoretical predictions for the performance due to design factors such as permittivity, aspect ratio, and the internal structure of the antenna are also supported by the experimental evidence.
Journal ArticleDOI
Single-Fed Broadband Circularly Polarized Stacked Patch Antenna With Horizontally Meandered Strip for Universal UHF RFID Applications
TL;DR: In this paper, a horizontally meandered strip (HMS) feed technique is proposed to achieve good impedance matching and symmetrical broadside radiation patterns for a single-fed broadband circularly polarized stacked patch antenna, which is suitable for universal ultra-high frequency (UHF) RF identification (RFID) applications.
Journal ArticleDOI
A Compact Circularly Polarized Cross-Shaped Slotted Microstrip Antenna
TL;DR: In this article, a compact cross-shaped slotted microstrip patch antenna is proposed for circularly polarized (CP) radiation, where a symmetric, cross shaped slot is embedded along one of the diagonal axes of the square patch for CP radiation and antenna size reduction.
Journal ArticleDOI
RIS-Based Compact Circularly Polarized Microstrip Antennas
TL;DR: In this paper, a compact asymmetric-cross slotted square patch antenna is proposed for circularly polarized (CP) radiation with a small antenna volume of 0.292λo × 0.0308λo on a low cost FR4 substrate.
Journal ArticleDOI
Single-Fed Low Profile Broadband Circularly Polarized Stacked Patch Antenna
TL;DR: In this article, a simple technique is developed in this communication to increase the axial ratio (AR) bandwidth and achieve good impedance matching of a single-fed low profile circularly polarized (CP) stacked patch antenna.
References
More filters
Journal ArticleDOI
Analysis and optimized design of single feed circularly polarized microstrip antennas
P. Sharma,K. C. Gupta +1 more
TL;DR: In this article, three types of single-feed circularly polarized microstrip antennas, namely, a diagonal fed nearly square, a truncated-corners square and a square with a diagonal slot, are presented.
Journal ArticleDOI
A dual-band circularly polarized aperture-coupled stacked microstrip antenna for global positioning satellite
D.M. Pozar,S.M. Duffy +1 more
TL;DR: In this article, the design and testing of an aperture-coupled circularly polarized antenna for Global Positioning System (GPS) applications is described, which operates at both the L1 and L2 frequencies of 1575 and 1227 MHz.
Journal ArticleDOI
A circularly polarized small-size microstrip antenna with a cross slot
TL;DR: In this paper, a new, circularly polarized small-size microstrip antenna using a proximity coupled feed method is proposed, and the measured results verify the circular polarization and the antenna radius was reduced by about 36% by using the slot lengths which are nearly equal to the diameter of the circular patch antenna.
Journal ArticleDOI
Novel compact circularly polarized square microstrip antenna
TL;DR: In this article, a compact circular-polarization (CP) operation of the square microstrip antenna with four slits and a pair of truncated corners is proposed and investigated.
Journal ArticleDOI
A Universal UHF RFID Reader Antenna
TL;DR: In this article, a broadband circularly polarized patch antenna is proposed for universal ultra-high-frequency (UHF) RF identification (RFID) applications, which is composed of two corner-truncated patches and a suspended microstrip line with open-circuited termination.
Related Papers (5)
Analysis and optimized design of single feed circularly polarized microstrip antennas
P. Sharma,K. C. Gupta +1 more