The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Novel application of Substrate Integrated Cavity (SIC) for suppressing cross-polarized (XP) radiation in hexagonal microstrip antenna has been proposed. The proposed design consists of a pair of tiny circular SICs consisting of metallic vias located symmetrically on the H-plane of the hexagonal patch. The design has been simulated in Ansys HFSSTM to establish the proposition that the incorporation...
This paper proposes a novel approach to design a microstrip patch antenna and to obtain the relationships between physical dimensions of it and its bandwidth. The curve-fitting method is adopted to establish the aforesaid relationship. The antenna is designed to operate in X band region of the entire electromagnetic spectrum and simulated results are verified with respect to the design frequency.
In this summary article, a simple surface wave launcher (SWL) in substrate integrated waveguide (SIW) technology is proposed. The launcher utilizes a conventional microstrip to SIW transition with the motivation of transferring power into the dominant TM0 surface wave (SW) mode of a grounded dielectric slab (GDS). Moreover, by appropriate design of the SIW section and by applying field matching techniques...
It has often been claimed that the microstrip antenna can be easily integrated with the feed network and circuitry on the same substrate. However, if this is actually done some compromise must be made between a good antenna performance and an acceptable circuit behavior [1]. The root of this problem lies in the fact that antenna radiation and circuitry are distinct electrical functions. Antennas require...
The next generation of SAR antennas are expected to operate in dual linear polarization. This implies that more demanding specification for cross-polarization isolation is required. In current SAR antenna designs the acceptable cross-pol level (within the 3dB beamwidth of the copolar patterns) was −20dB. For the new generation of SAR antennas the cross-pol level is expected to be better than −25dB...
A novel approach to design a multi-beam array antenna without a beam forming network (BFN) is presented. The proposed antenna consists of 3×3 microstrip patches that are tightly coupled through microstrip lines. By exciting any one of these patches, the energy can be coupled to all the patches. Nine beams towards different directions are obtained by selecting different feeding ports. The resultant...
An optimized planar antenna for transceiver operating at 1800 MHz (DCS band) is designed and presented. The designed microstrip antenna is used for Digital cellular system operating at the frequency of 1800 MHz with the return loss better than 10 dB.FR4 substrate is used in the design with lesser occupancy of 50*40*3.8mm3. The simulated design of antenna confirms satisfactory output gain and omnidirectional...
In this paper a circular monopole antenna with coplanar waveguide feed stopband is designed using ANSOFT HFSS13.0 software. The CPW feed antenna rule out the frequency ranges from 1.7GHz to 3.7GHz. The antenna attains the conduction with the return loss of −48.89dB at 4.24GHz with 800MHz bandwidth. The input impedance of coplanar waveguide feedline is 50Ω. FR4 Epoxy Resin with relative permeability...
This work outlines the design and simulation of a multilayer inkjet-printed mm-wave on-package antenna with a focus on electrical isolation from the packaging substrate. For the first time, a fully-printed SoP solution is outlined for the attach, 3D interconnection, and integration of an IC die with a peripheral 30 GHz microstrip-fed antenna. A CPW to microstrip feed transition is simulated to interface...
This work presents the design of a 4×4 element array of V-band substrate integrated waveguide fed aperture coupled microstrip patch antennas with beam-switching capabilities. The antenna is designed to operate from 56.16 to 64.8 GHz for a 14.25% bandwidth. A broadside gain of 17 dBi was achieved in the simulations and beam forming is demonstrated by exciting the 4 individual ports with a linear phase...
We present a multi-band and dual-polarization microstrip antenna designed for the S- and X-bands. The S-band element is an annular ring shorted with vias on the inner edge to suppress surface waves. The X-band element is a combination of a concentric annular ring slot shorted on the outer edge and a narrowband patch. All elements achieve circular polarization by truncating opposing corners of the...
This paper addresses the numerical simulations of rectangular patch and E shaped patch antennas for improving the performance of 5.75 GHz industrial, scientific and medical (ISM) band applications. The proposed antennas are directly feed by probe coaxial connector and the feed points are effectively controlled for the required operation. Significant performance enhancement can be realized when the...
In this paper, a multi-band micro-strip patch antenna with uneven parallel slots and optimized gain is proposed. Two types of substrate such as air and FR4 are used in the design. A detail parametric study of the patch antenna are carried out with air substrate. Co-axial feeding is used for optimal antenna characteristics. Consequently air substrate is changed with FR4 substrate and microstrip line...
Substrate integrated waveguides (SIWs) are a popular choice for implementing compact slotted waveguide leaky-wave antennas (LWAs). However, certain design parameters that may not seem important can have a significant impact on the radiation performance of such structures. The junction between the end of the SIW and the microstrip line typically used to terminate such structures can result in spurious...
Microstrip antennas generally prefer to printed antennas used for narrowband range at ultra-high frequencies and microwave communication. There are generally three basic methods of design microstrip antenna whose names are transmission line, cavity & full-wave model. This paper we use here the transmission line model for designing hexagonal shape having ground cut microstrip patch antennas. The...
In this paper, the design of a novel triple band triangular microstrip patch antenna with inset feed is proposed. The triangular patch is designed for a resonant frequency of 2 GHz. The inset feed is placed at a depth of 1/3rd of height from the bottom of the patch for improved return loss. The insertion of two slots and two tabs causes the antenna to resonate at multiple frequencies. The proposed...
Electroplating on dielectric is used to realize continuous metallic side walls of a substrate integrated waveguide (SIW). Thus the complexity of fabricating chain of metallic via using precise mechanical or laser drilling used in conventional SIW fabrication is avoided. To show effectiveness of the procedure, a single cavity dual-mode bandpass filter is designed and fabricated. A modified corner cut...
A 4-port deembedding technique is developed to remove the effects of microstrip feeds from a half-mode waveguide distributed amplifier. It is shown that the feeds are the main cause of gain ripple and port mismatch in both near-ideal and practical half-mode waveguide distributed amplifiers.
This paper presents two innovative designs of miniature wearable microstrip antennas for biotelemetry in the Industrial, Scientific, and Medical (ISM) band (2.4–2.48GHz). The two proposed designs employ stacked triangular guiding patches as well as slotting of the patches. This results in a considerable size reduction of 60% with respect to the original antenna volume. Both designs have dimensions...
A planar substrate integrated waveguide slot-fed microstrip grid array antenna for the frequency range 76–81 GHz is presented. The antenna is realized on a standard soft RF substrate. It is fed using a transverse slot in a substrate integrated waveguide on a separate substrate layer below the antenna. A wideband microstrip to substrate integrated waveguide is designed to feed the antenna. Measurement...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.