Journal ArticleDOI
Analytical Calculation of Impedance Matching for Probe-Fed Microstrip Patch Antennas
TLDR
In this article, the authors present an analytical solution to the feeding mechanism for a microstrip patch antenna fed by a vertical probe, which employs a circular capacitive structure to improve the impedance matching.Abstract:
The goal of this article is to present an analytical solution to the feeding mechanism for a microstrip patch antenna fed by a vertical probe. The feeding mechanism employs a circular capacitive structure to improve the impedance matching, specifically for microstrip patch antennas on thick dielectrics. A circuit model is introduced to find the design parameters. The circuit model includes a series inductor associated with the feeding probe, a parallel plate radial microstrip line, a series radial gap capacitor and an RLC resonator as the patch antenna. A closed form impedance transformation is generated for the parallel plate radial microstrip line. The result of a Schwarz-Christoffel mapping is used to find the radial gap capacitor. The full-wave simulation and measured results are compared with the model and display good agreement.read more
Citations
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Journal ArticleDOI
Design and Characterization of Miniaturized Patch Antennas Loaded With Complementary Split-Ring Resonators
TL;DR: In this paper, the design of compact patch antennas loaded with complementary split-ring resonators (CSRRs) and reactive impedance surface (RIS) is presented, where CSRR is incorporated on the patch as a shunt LC resonator providing a low resonance frequency and RIS is realized using the two-dimensional metallic patches printed on a metal-grounded substrate.
Journal ArticleDOI
Using Thick Substrates and Capacitive Probe Compensation to Enhance the Bandwidth of Traditional CP Patch Antennas
TL;DR: This work proposes a novel compensation technique to enhance the bandwidth capabilities of traditional circularly polarized (CP) patch antennas and demonstrates this technique with simulations and measurements to obtain AR- S11 bandwidth capabilities as high as 12.6%.
Journal ArticleDOI
Sidelobe Reduction of TM 12 Mode of Circular Patch via Nonresonant Narrow Slot
Prateek Juyal,Lotfollah Shafai +1 more
TL;DR: In this paper, a technique to reduce the $E$ -plane sidelobe of the TM12 mode of circular microstrip patch is presented, which involves the use of a single nonresonant narrow slot embedded at the patch center.
Journal ArticleDOI
Vertical Integration of High- $Q$ Filter With Circularly Polarized Patch Antenna With Enhanced Impedance-Axial Ratio Bandwidth
Tianjiao Li,Xun Gong +1 more
TL;DR: A new approach to enhance the impedance-AR bandwidth of probe-fed CP patch antennas without using thick substrates is presented and a third-order Chebyshev filtering function is embedded in this antenna array to enhanceThe out-of-band interference rejection.
Journal ArticleDOI
A Wideband Electrically Small Transient-State Antenna
TL;DR: In this paper, a new concept associated with feeding an electrically small antenna is introduced to overcome the fundamental limits of antennas, which allows transmission of an arbitrary waveform using a high quality factor (high-Q) resonant antenna which has been previously impossible.
References
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Book
Time-harmonic electromagnetic fields
TL;DR: In this paper, a revised version of the Revised edition of the book has been published, with a new introduction to the concept of plane wave functions and spherical wave functions, as well as a detailed discussion of the properties of these functions.
Book
Foundations for microwave engineering
TL;DR: This paper presents a meta-modelling architecture for waveguiding systems that automates the very labor-intensive and therefore time-heavy and expensive process of designing and installingWaveguiding Systems.
Book
Antenna theory and design
TL;DR: The CEM for Antennas: Finite Difference Time Domain Method (FDTDM) as mentioned in this paper is a CEM-based method for measuring the time domain of an antenna.
Journal ArticleDOI
Wide-band E-shaped patch antennas for wireless communications
TL;DR: This paper presents a novel single-patch wide-band microstrip antenna: the E-shaped patch antenna, where two parallel slots are incorporated into the patch of a micro Strip antenna to expand it bandwidth.
Journal ArticleDOI
Microstrip antenna aperture-coupled to a microstripline
TL;DR: A new technique for feeding printed antennas is described in this paper, where a microstrip antenna on one substrate is coupled to a microstripline feed on another parallel substrate through an aperture in the ground plane which separates the two substrates.
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