Journal ArticleDOI
Multifrequency operation of microstrip-fed slot-ring antennas on thin low-dielectric permittivity substrates
H. Tehrani,Kai Chang +1 more
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TLDR
In this paper, the authors investigated the operating frequency and radiation patterns of microstrip-fed ring slot antennas and showed that the length of the microstrip stub is increased to exceed half the guided wavelength of the first operating frequency, then multiple operating frequencies with broadside radiation patterns become available.Abstract:
Operating frequencies and radiation patterns of microstrip-fed ring slot antennas are investigated. The microstrip feed is shown to strongly affect the operating frequencies of the slot antenna. As the length of the microstrip stub is increased to exceed half the guided wavelength of the first operating frequency, then multiple operating frequencies with broadside radiation patterns become available. By extending the single microstrip feed to couple to two slot locations, the antenna's operating frequency ratios and polarizations can be tuned. A number of multifrequency microstrip-fed slot ring antennas are demonstrated. Numerical analysis based on the moment method is compared with the experimental results. A dual-frequency antenna array is also reported.read more
Citations
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Journal ArticleDOI
Development of Low Profile Cavity Backed Crossed Slot Antennas for Planar Integration
TL;DR: In this article, a single-fed low profile cavity backed crossed slot antennas for dual frequency dual linear polarization and circular polarization applications are proposed by employing the substrate integrated waveguide (SIW) technique in the antenna designs.
Journal ArticleDOI
RF MEMS Integrated Frequency Reconfigurable Annular Slot Antenna
TL;DR: In this article, double-and single-arm DC-contact RF MEMS actuators have been integrated with an antenna architecture to develop a frequency reconfigurable antenna (RA) annular slot, which was built on a microwave laminate TMM10i.
Journal ArticleDOI
Dual-Frequency Dual-Sense Circularly-Polarized Slot Antenna Fed by Microstrip Line
Xiulong Bao,Max J. Ammann +1 more
TL;DR: In this article, a dual-frequency dual circularly-polarized slot antenna is proposed, which is achieved using a single-layer microstrip-fed configuration coupled to a modified annular-slot antenna.
Journal ArticleDOI
Compact Hyper-Band Printed Slot Antenna With Stable Radiation Properties
TL;DR: In this paper, a hyper-band ( $>$ 10:1 impedance bandwidth) printed antenna design is investigated numerically and experimentally, which is based on an elliptical-slot antenna augmented with a parasitic oval patch and driven with a specially engineered microstrip-line-fed elliptical tuning fork element.
Journal ArticleDOI
Design of a Compact Dual-Band Annular-Ring Slot Antenna
TL;DR: In this paper, an annular-ring slot antenna that is suitable for the 2.4/5 GHz dual-band operations was miniaturized by embedding in the center patch of the antenna a pair of slots to excite three resonant modes.
References
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Journal ArticleDOI
Microstrip antenna technology
K. Carver,J. Mink +1 more
TL;DR: A survey of microstrip antenna elements is presented, with emphasis on theoretical and practical design techniques, and critical needs for further research and development for this antenna are identified.
Journal ArticleDOI
A reciprocity method of analysis for printed slot and slot-coupled microstrip antennas
TL;DR: In this paper, a method for the analysis of slot-type discontinuities in microstripline was proposed based on the reciprocity theorem and the exact Green's functions for the grounded dielectric slab in a moment method solution for the unknown antenna currents.
Journal ArticleDOI
Microstrip bandpass filter using degenerate modes of a microstrip ring resonator
TL;DR: In this article, two degenerate modes can be excited on a microstrip ring resonator to realize a double-tuned circuit bandpass filter in microstrip technique, which can be used to achieve a better performance than the conventional bandpass filters.
Journal ArticleDOI
A Microstripline Slot Antenna (Short Papers)
TL;DR: In this paper, a microstripline slot antenna is treated experimentally at X-band frequency and the dependence of input impedances and radiation patterns on the slot-to-reflector spacing is tested.
Book
Broadband patch antennas
TL;DR: In this article, the SSFIP principle is used to describe structure material properties design principles examples of realization, such as microstrip structures waves on microstrips microstrip lines significant advantages main design problems.