scispace - formally typeset
Search or ask a question
Journal ArticleDOI

CPW feed dual band and wideband antennas using crescent shape and T‐shape stub for Wi‐Fi and WiMAX application

01 Oct 2017-Microwave and Optical Technology Letters (John Wiley & Sons, Ltd)-Vol. 59, Iss: 10, pp 2586-2591
About: This article is published in Microwave and Optical Technology Letters.The article was published on 2017-10-01. It has received 12 citations till now. The article focuses on the topics: Stub (electronics).
Citations
More filters
Journal ArticleDOI
TL;DR: The performance comparison of the proposed flexible antenna with the state-of-the-art flexible antennas in terms of compactness, frequency reconfigurability, and number of operating bands demonstrates the novelty ofThe proposed antenna and its potential application in heterogeneous applications.
Abstract: This paper presents a compact frequency reconfigurable antenna for flexible devices and conformal surfaces. The antenna consists of a simple easy to fabricate structure consisting of a stub loaded circular radiator, designed on commercially available RT5880 flexible substrate ( $\varepsilon _{\mathrm {r}} = 2.2$ ) with a thickness of 0.254 mm. The combination of stub loading and slot etching techniques are utilized to achieve the advantages of compactness, frequency reconfigurability, wide impedance bandwidth, and stable radiation pattern with structural conformability. The frequency reconfigurability is achieved by employing two p-i-n diodes. Simulated and experimental results showed that the antenna operates in various important commercial bands, such as S-band (2 GHz– 4 GHz), Wi-Max (3.5 GHz and 5.8 GHz), Wi-Fi (3.6 GHz, 5 GHz, and 5.9 GHz), 5G sub-6-GHz (3.5 GHz and 4.4 GHz – 5 GHz), and ITU-band (7.725 GHz – 8.5 GHz) with the additional advantages of structural conformability. Furthermore, the performance comparison of the proposed flexible antenna with the state-of-the-art flexible antennas in terms of compactness, frequency reconfigurability, and number of operating bands demonstrates the novelty of the proposed antenna and its potential application in heterogeneous applications.

51 citations

Journal ArticleDOI

9 citations


Cites background from "CPW feed dual band and wideband ant..."

  • ...6 mm(3) is realized for worldwide interoperability for microwave access (WiMAX) and wireless local area network (WLAN).(8) The crescent shape with T-shape stub is incorporated to achieve dual band operation....

    [...]

References
More filters
Book
01 Jan 2001
TL;DR: In this paper, the authors describe the characteristics of conventional, Micromachined, and Superconducting Coplanar Waveguides, as well as their transitions in directional couplers, hybrid, and magic-Ts.
Abstract: Preface Introduction Conventional Coplanar Waveguide Conductor-Backed Coplanar Waveguide Coplanar Waveguide with Finite-Width Ground Planes Coplanar Waveguide Suspended Inside A Conducting Enclosure Coplanar Striplines Microshield Lines and Coupled Coplanar Waveguide Attenuation Characteristics of Conventional, Micromachined, and Superconducting Coplanar Waveguides Coplanar Waveguide Discontinuities and Circuit Elements Coplanar Waveguide Transitions Directional Couplers, Hybrids, and Magic-Ts Coplanar Waveguide Applications References Index

1,225 citations


"CPW feed dual band and wideband ant..." refers methods in this paper

  • ...Coplanar waveguide feed is the one of the most popular uniplanar feed techniques used for printed antennas and it has unique advantages over microstrip feed antennas.(3,4) So, in this work advantage of CPW feed is incorporated for designing a compact antenna for WLAN and WI-MAX application with least complexity....

    [...]

Journal ArticleDOI
TL;DR: In this paper, the authors proposed a planar dual-band inverted-F antenna for cellular handsets, which operates at the 0.9-GHz and 1.8-GHz bands.
Abstract: Cellular telephone handsets are now being designed to have dual-mode capabilities. In particular, there is a requirement for internal antennas for GSM and DCS1800 systems. This paper describes a novel planar dual-band inverted-F antenna for cellular handsets, which operates at the 0.9-GHz and 1.8-GHz bands. The dual-band antenna has almost the same size as a conventional inverted-F antenna operating at 0.9 GHz and has an isolation between bands of better than 17 dB. The bandwidths of the antenna are close to those required for the above systems. Good dual-band action is also obtained for other frequency ratios in the range of 1.3-2.4. Studies also show that the dual-band antenna can operate with one or two feeds. A finite-difference time-domain analysis has been shown to give calculated results close to those measured.

447 citations


"CPW feed dual band and wideband ant..." refers methods in this paper

  • ...Different types of antennas such as monopole antenna, Planar Inverted-F antennas (PIFA) are double layer with large ground planes and excited by probe feed or microstrip-feed techniques this makes them bulky.(1,2) Different methods of planar feeding techniques and various unique microstrip feed techniques were studied to reduce the size....

    [...]

Book
11 Jan 2013
TL;DR: Waterhouse et al. as mentioned in this paper proposed an approach to improve the performance of single-layer patch antennas by reducing the size of the patch array and increasing the bandwidth of the antenna array.
Abstract: Acknowledgements. 1: Introduction R. Waterhouse. 1.1. History. 1.2. Advantages and Issues. 1.3. Applications. 1.4. Summary of Book. 1.5. Bibliography. 2: Fundamental Properties of Single Layer Microstrip Patch Antennas R. Waterhouse, D. Novak, D.-K. Park, Y. Qian, T. Itoh. 2.1. Introduction. 2.2. General Theory of Operation and Design Tools. 2.3. The Effect of Conductor Shape. 2.4. Impedance and Radiation Performance of Single Layer Patches. 2.5. Excitation Methods of Microstrip Patches. 2.6. Circular Polarization Generation. 2.7. Summary. 2.8. Bibliography. 3: Enhancing the Bandwidth of Microstrip Patch Antennas R. Waterhouse, J.T. Aberle, D. M. Kokotoff, A. Mitchell, M. Lech, S.D. Targonski, M. Lye, F. Zavosh, K. Ghorbani, D. Novak, A. Nirmalathas, C. Lim. 3.1. Introduction. 3.2. Intuitive Procedures. 3.3. Horizontally Coupled Parasitic Patches. 3.4. Stacked Patches. 3.5. Large Slot Excited Patches. 3.6. Aperture Stacked Patches. 3.7. Ultra-wideband ASPs. 3.8. Summary. 3.9. Bibliography. 4: Improving the Efficiency of Microstrip Patch Antennas R. Waterhouse, D. Pavlickovski, D. M. Kokotoff, J.T. Aberle. 4.1. Introduction. 4.2. Surface Waves. 4.3. Patches that do not Excite TM Surface Waves. 4.4. Hi-lo Stacked Patches. 4.5. Photonic Band-gap Structures. 4.6. Summary. 4.7. Bibliography. 5: Small Microstrip Patch Antennas R. Waterhouse, H.K. Kan, D.M. Kokotoff, S.D. Targonski, J.T. Rowley, D. Pavlickovski. 5.1. Introduction. 5.2. Shorted Microstrip Patches. 5.3. Further Size Reduction Techniques for Shorted Patches. 5.4. Winged Shorted Patch. 5.5. Shorted Spiral Patches. 5.6. Improving the Performances of Shorted Microstrip Patches. 5.7. Performance of Shorted Microstrip Patch Antennas for Mobile Communications Handsets at 1800 MHz. 5.8. Summary. 5.9. Bibliography. 6: Direct Integration of Microstrip Antennas R. Waterhouse, W.S.T. Rowe, D. Novak, A. Nirmalathas, C. Lim. 6.1. Overview for Requirernents for Integration. 6.2. Slot Coupled Procedures and Solutions. 6.3. Direct Contact Procedures and Solutions. 6.4. Summary. 6.5. Bibliography. 7: Microstrip Patch Arrays R. Waterhouse, K. Ghorbani, W.S.T. Rowe, S.D. Targonski, L. Mali, H.K. Kan, D. Novak, A. Nirmalathas, C. Lim. 7.1. Introduction. 7.2. Series Fed Arrays. 7.3. Parallel Fed Arrays. 7.4. Combination Fed Arrays. 7.5. Large Scanned Arrays of Microstrip Patches. 7.6. Alternatives to Large Arrays of Microstrip Patches. 7.7. Wraparound Patch Antenna Arrays. 7.8. Summary. 7.9. Bibliography. 8: Summary R. Waterhouse. 8.1. Overview. 8.2. Future Directions of Microstrip Patch Technology. 8.3. Bibliography. List of Contributors.

201 citations

Journal ArticleDOI
TL;DR: In this paper, a dual-frequency coplanar waveguide (CPW)-fed monopole antenna is proposed and experimentally studied, which utilizes the advantages of the CPW line to simplify the structure of the antenna into a single metallic level, thereby making easier the integration with the microwave integrated circuits.
Abstract: A new dual-frequency design of coplanar waveguide (CPW)-fed monopole antenna is proposed and experimentally studied. The proposed antenna utilizes the advantages of the CPW line to simplify the structure of the antenna into a single metallic level, thereby making easier the integration with the microwave integrated circuits. The two operating modes of the proposed antenna are associated with various lengths of two monopoles, in which the longer monopole works for the first resonant mode and the shorter monopole works for the second mode. Moreover, by increasing the width of the longer monopole, a broadband dual-frequency operation is demonstrated. Experimental results show that the impedance bandwidth, determined from 10-dB return loss, of the two operating frequencies can both be greater than 14%. Details of the experimental results are presented and discussed.

167 citations

Journal ArticleDOI
TL;DR: In this paper, a printed circular disc monopole antenna with an L-shaped slot cut out of the ground, forming a defected ground plane, is proposed, which exhibits a measured -10 dB S 11 bandwidth of 600 MHz from 2.68 to 3.28 GHz, and a bandwidth of 4.84 GHz from 4.74 to 9.58 GHz.
Abstract: A compact multiband antenna is proposed that consists of a printed circular disc monopole antenna with an L-shaped slot cut out of the ground, forming a defected ground plane. Analysis of the current distribution on the antenna reveals that at low frequencies the addition of the slot creates two orthogonal current paths, which are responsible for two additional resonances in the response of the antenna. By virtue of the orthogonality of these modes the antenna exhibits orthogonal pattern diversity, while enabling the adjacent resonances to be merged, forming a wideband low-frequency response and maintaining the inherent wideband high-frequency response of the monopole. The antenna exhibits a measured -10 dB S 11 bandwidth of 600 MHz from 2.68 to 3.28 GHz, and a bandwidth of 4.84 GHz from 4.74 to 9.58 GHz, while the total size of the antenna is only 24 times 28.3 mm. The efficiency is measured using a modified Wheeler cap method and is verified using the gain comparison method to be approximately 90% at both 2.7 and 5.5 GHz.

151 citations