Design of compact dual band microstrip patch

It is demonstrated from observation figure 8 and Table 3 that RA with CPW feeding technique has wider impedance bandwidth of 2. Figure 9 depicts the simulated far-field realized gain radiation pattern of the RA at both 3D and 2D plots at It is observed from this figure that the RA has an omnidirectional pattern suitable for wireless communication application compared with the conventional microstrip-fed MPA which has a boresight directional radiation pattern.

Design of compact dual band microstrip patch

Introduction Due to the tremendous increasing in modern communication technologies and with the rapid demand for different wireless frequency applications on a single wireless terminal device, compact dual- and multi-band planar antennas are the best solution. Over the past decades, there exist numerous designs of the dual-band planar antennas that based on microstrip technology and have been reported for wireless communications, especially for 3.

These include inverted-F antenna IFA structure [1, 2], microstrip line-fed split ring metamaterial structure [3], multiple circular arc-shaped strips with binomial curved conductor-backed plane [4], microstrip line-fed stacked patch antenna [5], multistrip monopole antenna with defected ground structure [6], toothbrush-shaped patch, a meander line, and an inverted U-shaped patch [7].

However, most of these antennas are large in size.


Despite of ACS-fed antennas are capable of providing dual-band with compact size, their radiation patterns are not symmetrical since the ACS-fed structure has an unbalanced nature [10]. Among feeding structures used for dual-band antennas, the coplanar waveguide CPW [] is very attractive by researchers due to its attractive features, such as low profile, low cost and better isolation from feeding networks.

Vol.7, No.3, May, Mathematical and Natural Sciences. Study on Bilinear Scheme and Application to Three-dimensional Convective Equation (Itaru Hataue and Yosuke Matsuda). Technical Articles articles, application notes and useful information for design engineers. Release Notes Release date: 19 September New Antennas. Printed folded dipole antenna with a groundplane. [MAGUS] Microstrip Combline Antenna.

In addition, the CPW provides the benefits of good impedance matching, omnidirectional patterns, minimum surface wave and it is easy of fabrication comparing to other excitation methods, e.

Thus, based on the aforementioned features of CPW feeding technique, the CPW is adopted here in the design of the proposed antenna.

Although, these antennas have generated multi-band for different applications, but most of them are too complex for the practical applications.

Moreover, these antennas result in drawbacks, namely; the use of resonator elements for generating different resonance modes may increase the size of these antennas; mutual coupling among signal paths of different resonator parts; complex fabrication process.

Thus, due to the above aforementioned drawbacks of the loading resonator based-technique for dual- and multi-band antenna operation, these antennas are not suitable to use in the case of restricted available terminal space. Due to the well-known interesting features, self- similarity and space filling, fractal geometries have intrinsic features as compared with traditional Euclidian counterparts for designing miniaturized antennas for multiband wireless applications [21].

Multiband operation have been associated with the characteristic of the self-similarity while miniaturized size is due to the spacing filling property of the fractal geometry [22]. Consequently, miniaturized antennas characterized by good radiation behavior and operation for the desired operational frequency bands could be achieved by utilizing fractal structures for antenna designs.

Nowadays, various forms of fractal structures are used for dual- and multi-band antenna designs []. For instance, a combination of the Jerusalem cross JC as a fractal load and fractal Minkowski slot antenna covering dual-band, 2. A Koch-like sided Sierpinski hexagonal carpet multifractal monopole antenna fed by CPW with a Koch-like edged fractal ground is proposed in [24], which covers 2.

In [25], a novel design of multiband fractal PIFA is considered for dual band operation of antenna by using two folded edges.

It has dual impedance bandwidths covers WLAN bands 2. From the literature survey, it is concluded that most of the techniques used for compact-size dual- or multi-band antenna designed have the problems of requiring additional structures, or being complex to be implemented or having large size.

Articles, application notes and useful information for design engineers

In this paper, we propose a new compact design approach to achieve compact dual-band pentagonal ring fractal patch antenna PRFPA. In this work, two full-wave available commercially packages are used.

A good agreement is shown in the simulation results that offered by the two simulator packages. Concept of Dual-band Antenna This section presents the description of the geometrical configuration of the compact dual-band antenna and outlines the basic four steps of a procedure that applied to antenna designed.

A fractal concept based on the first-order pentagonal ring-shaped structure introduces here to achieve optimized dual-band operation of antenna while maintaining compact size.

Antenna Configuration The final geometrical configuration of the proposed antenna is shown in Figure 1 a.

This antenna is designed to operate in dual-band, 3. The antenna is designed using a square FR-4 substrate with relative permittivitythickness and having dimensions.

It comprises of a first iteratively pentagonal ring PR fractal-radiating patch, which its recursive-generation procedure is shown in Figure 1 b.

The CPW ground has a length and the ground is modified by cutting from its upper right corners two pair of triangular-shaped notches. This tapered ground plane together with the tapered feeding line dimension, which it is connected to the patch, play a critical key factor of the antenna that dedicates its dual-band functionality.

Each perimeter segment of the curve is replaced with the generator.

Design of Compact Dual-band and Tri-band Microstrip Patch Antennas

The pentagon structure, initiator or zero order, is shown along with the first two generating iterations 2. Design Procedure Figures 2 and 3 illustrate the four systematic steps design procedure taken to develop the proposed dual-band antenna, namely: As for designing dual-band antenna, two wide-band antennas based on CPW-fed are presented.

They are closely related to each other, and the size and parameter dimension values of them are equal. Initially, and knowing that the size of the antenna is determined approximately by the following formula: Based on 1we design the SPA by assuming that the thickness of the substrateand the lowest frequency of 3.

Then, the SPA is square and has a size of Figure 2. Geometry of various antennas involved in the design evolution Figure 2 shows that the patch length and patch width of SPA is related to side length S of the PPA as: Based on 2a and 2b and a value of from simulation, the values of and are In this paper, a simple new compact design of single layer single patch element with microstrip feed line is proposed for dual frequency operation in Ku-band.

The antennas listed below are available in the Antenna Magus database.

Design of compact dual band microstrip patch

For each of these antennas, Antenna Magus offers detailed information, synthesis algorithms, performance estimations and ready-to-run simulation models. Compact Patch Antennas on Composite Printed Circuit Boards in Space C.

Min, N. Howland and N. R. Potts Printech Circuit Laboratories Haltwhistle Road, South Woodham Ferrers, Chelmsford, Essex CM3 5ZA, UK. Initially, a conventional MPA fed by microstrip-line is designed to operate at GHz WLAN band.

Prof Yang Hao - School of Electronic Engineering and Computer Science

Then, intermediate antenna prototype structures are obtained during the design process until achieving the desired antennas. The Ant.2 gives tri-band covering the aforementioned dual-band besides to C-band GHz ( – GHz).

An electromagnetic simulator CST MWS ver. was used to . A single layered, dual band microstrip reader antenna composed of a single patch on the top layer and slots on the radiating edges is presented in [5] with a dimension of 19mm x 29mm for radiating.

Sensors - Photoelectric Switch HYD Wholesale Trader from Mumbai