Rectangular microstrip antenna pdf

An advantage of microstrip THz patch antennas is that their bandwidth limitation can be overcome by the use of electrically thick substrates [12—15]. Thus, fabricating patch antennas on a high dielectric constant substrate are becoming attractive for miniaturized modes.

However, direct use of high dielectric constant substrates results strong surface wave modes. The diffraction from the surface waves at the edge of the finite size substrate degrades the radiation pattern and reduces the radiation efficiency of the patch.

The bandwidth increases rapidly with increasing substrate thickness [15]. At higher frequencies, substrates are much thicker and have high dielectric constant than at lower frequencies. As we move from frequency above GHz that is towards THz regime, ohmic losses become more severe, but due to the benefits of larger bandwidth and efficiency, we are interested to work at this frequency regime.

We have also discussed the role of shorting pin to reduce the dimension of the radiating patch. The organization of the paper is as follows. The section 2 discusses about the patch antenna configuration. The section 3 concerned with the simulation results.

Finally, section 4 concludes the work. J Infrared Milli Terahz Waves —7 3 2 THz antenna configuration The microstrip patch antenna size mostly depends on the frequency band of operation. There are several other factors that also contribute to determine the dimension of the microstrip antenna and its behavior such as the substrate material used and its thickness. The patch material affects the efficiency of the antenna, while the type of substrate plays a major role in the determination of the antenna dimensions [14, 15].

A rectangular microstrip patch antenna consists of a conductive rectangular patch on a dielectric substrate above a conductive ground plane as shown in Fig. The excitation of the patch is accomplished by a microstrip feed-line [16, 17]. This feed technique supply the electrical signal to radiating patch which will be converted into an electromagnetic wave. When the patch is excited by the feed, the bottom of patch at a certain time will have a positive charge distribution, and the ground plane will have a negative charge distribution.

The attractive forces between these charges will hold most of them on the bottom and top surfaces of the patch and ground material, respectively. On the patch surface, repulsive charges within the same polarity tend to push some of the charges towards the edges. These charges will develop a fringing effect at the edges, causing radiation. The geometrical structure of this THz rectangular microstrip patch antenna is as shown in Fig.

In this antenna, we use microstrip line edge feeding technique and simulation has been performed by using CST Microwave Studio. The communications in THz frequency band should satisfy the demand of aforementioned requirements.

We have proposed a high-gain ultra-broadband rectangular microstrip patch antenna for such a short-distance wireless communication Fig. The simulation results of rectangular microstrip patch antenna at THz frequency 0. The shorting pin located close to the feed point results a significant reduction in overall patch dimension [20]. Figure 2 shows the return loss of the proposed rectangular microstrip patch antenna with and without shorting pin.

The resonant frequency downshifts for shorting pin structure compared to that of without shorting pin. The radiation efficiency and gain of the antenna has been increased in the shorting pin configuration compared to that of without shorting pin. From the Fig. Without shorting pin the gain, directivity and radiation efficiency of the antenna are 3. The 10 dB impedance bandwidth in the case of shorting post microstrip patch antenna is As we know that the patch antennas on a high dielectric constant substrate are becoming attractive for miniaturized modes but it results strong surface wave modes.

The diffraction from the surface waves at the edge of the finite size substrate degrades the radiation pattern and reduces the radiation efficiency of the patches. This is the basic reason behind the less efficiency and gain of the antenna without shorting post. For the shorting post structure the surface wave in the substrate will be discontinues.

So the electrical parameter of the antenna increases. The E and H plane far-zone radiation pattern for the gain of rectangular microstrip patch antenna at GHz frequency is shown in Fig. Garg, P. Bhartia, I. Bahl, A. Compact wideband transparent antenna for 5G communication systems. Microwave and Optical Technology Letters, vol. Flexible wideband antenna for 5G applications. Microwave Opt Technology Lett. A transparent and flexible polymer-fabric tissue UWB antenna for future wireless networks.

A semicircular metamaterial-loaded monopole filtering antenna with high selectivity and harmonics suppression. Telkomnika, vol. Multilayer antenna package for IEEE Air-filled substrate integrated waveguide for low-loss and high power-handling millimetre-wave substrate integrated circuits.

Millimeter-wave 5G antennas for smartphones: Overview and experimental demonstration. Evaluation of SAR distribution in six-layer human head model. International Journal of Antennas and Propagation, Evolution and innovation of antenna systems for beyond 5G and 6G. Microwave Journal.

Designed 2x1 inset fed rectangular microstrip antenna array 3. Design of a 4x1 Rectangular Microstrip Antenna Array The design of a 4x1 four-elements , single band rectangular microstrip antenna array is presented in this sub-section. The design specifications for the inset fed 4x1 array are: the same with 2x1 array. The summary of the results of the design calculations and specifications for various dimensions of patch, ground plane and parallel feed line network for the 4x1 inset fed RMSA is given in Table 3.

Table 3. Figure 3. Designed 4x1 inset fed rectangular microstrip antenna array 4. Figure 4. Return loss versus frequency of single element rectangular microstrip antenna Figure 6. VSWR versus frequency for the single element rectangular microstrip antenna Figure 7.

Return loss of 2x1 rectangular microstrip antenna array Figure 8. VSWR versus frequency for the 2x1 antenna array Figure 9. Return loss of 4x1 rectangular microstrip antenna array Figure Table 4. This indicates that the designed antennas are functioning properly since they all resonated at the desired centre frequency of 2. The return loss of Also, the return loss of The return losses of Conclusions In this paper, the mathematical calculations and methods for the designs of an innovative single element, 2x1 and 4x1 inset fed rectangular microstrip antennas resonating at 2.

The antennas performance characteristics such as return loss, gain and VSWR were obtained in the simulation. The simulation results of the single element rectangular microstrip antenna produced a return loss of The simulation results of the 2x1 rectangular microstrip antenna array showed a return loss of The simulation results show that the gain of single element RMSA is improved using the novel designed 2x1 and 4x1 rectangular microstrip antenna arrays.

Good results for return loss, resonant frequency, gain and VSWRs for single element and array antennas have been achieved. The novel designed antennas can be used for wireless local area networks, S band communications and modern wireless communication systems applications. References [1] Alsager, A. Boras, Sweden. Antenna Theory: Anaysis and Design. Malaysia, Malaysia. Microstrip Antenna Design Handbook. Boston: Artech House Inc.

Handbook of Antennas in Wireless Communications. Modern Applied Science, 6 1 : 68 - Broadband Microstrip Antennas. Modern Antenna Design.

Microwave Engineering. John wiley and Sons. International Journal of Computer Applications, 95 6 , 17 - Document Information click to expand document information Description: Abstract: In the present work an attempt has been made to design and simulation of rectangular microstrip double patch antenna for X band using microstrip feed line techniques. Did you find this document useful? Is this content inappropriate? Report this Document.

Description: Abstract: In the present work an attempt has been made to design and simulation of rectangular microstrip double patch antenna for X band using microstrip feed line techniques. Flag for inappropriate content.

Download now. For Later. Related titles. Carousel Previous Carousel Next. Background of Odisha Literature Press and Journals. An Application of Causality Approaches. Jump to Page. Search inside document. For dominant mode duration mode. Now we calculate effective length. Microstrip feed width calculation. Figure 6 shows total gain of the proposed antenna. Figure 7 shows VSWR of the proposed antenna. Design of Reconfigurable Antenna for 5G Applications. Popular in Wireless.

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