Integrated filter/antennas. A continuously frequency reconfigurable slot-ring antenna/array with switches and varactors is presented first. By changing the state of the loaded switches, the reconfigurable slot-ring antenna/array is able to operate as an L-band slot-ring antenna or a 2×2 S-band slot-ring antenna array. The design of frequency and pattern reconfigurable rectangular microstrip patch antenna using a single switch is presented. The antenna works in two modes depending on the condition of switch. Frequency and pattern reconfigurability is observed at 2.47 GHz, 3.8 GHz and 5.36 GHz frequency.
Abstract
Abstract—This paper presents the use of pin diodes to recon-figure the impedance match and modify the radiation pattern of an annular slot antenna (ASA). The planar antenna is fabricated on one side of a Duroid substrate and the microstrip feeding line with the matching network is fabricated on the opposite side of the board. The central frequency is 5.8 GHz and, by reconfiguring the matching circuit, the antenna was also designed to operate at 5.2 and 6.4 GHz. Pin diodes are also used to short the ASA in preselected positions along the circumference, thereby changing the direction of the null in the plane defined by the circular slot changes. As a proof of concept, two pin diodes are placed 45 on both sides of the feeding line along the ASA and the direction of the null is shown to align with the direction defined by the circular slot center and the diode. Consequently, a design that is reconfigurable in both frequency and radiation pattern is accomplished. Return loss and radiation pattern measurements and simulations are pre-sented, which are in very good agreement. Index Terms—Annular slot antenna (ASA), frequency reconfig-urability, pin diode, reconfigurable antenna, reconfigurable radia-tion pattern, slot antenna. I.
Frequency Reconfigurable Split Ring Antenna for LTE And WiMAX Applications
Abstract
This paper presents frequency reconfigurable dual band antenna for WiMAX and LTE 2500 band applications using four PIN diode switches. The antenna is compact in size with dimensions of 30 x 30 x 0.8 mm3 and designed on FR-4 dielectric substrate with a partial ground plane. The fabricated antenna operates in the frequency range of LTE and WiMAX (2.5-2.69 GHz and 3.4-3.6 GHz) respectively. The frequencies can be controlled by using PIN diodes and antenna attained the gain ranging of 3.34-4.46 dBi. This designed antenna resonating at 2.52 and 3.49 GHz when the PIN diodes are in ON state and resonating at 2.68 and 3.58 GHz when PIN diodes are in OFF state. The proposed antenna has bidirectional radiation at upper frequency bands and unidirectional at lower frequency bands. The proposed split ring structured antenna has the radiation efficiency of 94.12% at 2.52 GHz and 90.34% at 3.49 GHz in ON state. Antenna providing good agreement between the measured (Antenna measurement setup with VNA) and simulated results (Ansys-HFSS).
References
Ojaroudi, Sajjad, Yasser Ojaroudi, and Nasser Ojaroudi. 'Novel design of reconfigurable microstrip slot antenna with switchable band‐notched characteristic.' Microwave and Optical Technology Letters, vol.57, no.4, pp.849-853,2015.
Badamchi, Z., and Y. Zehforoosh. 'Switchable single/dual band filtering UWB antenna using parasitic element and T‐shaped stub wave cancellers.' Microwave and Optical Technology Letters, vol.57, no.12, pp. 2946-2950, 2015.
Selvam, YogeshwariPanneer, et al. 'Novel frequency-and pattern-reconfigurable rhombic patch antenna with switchable polarization.' IEEE Antennas and Wireless Propagation Letter, vol.16, pp.1639-1642,2017.
Rasool, Maryam, et al. 'A compact open complementary split ring resonator inspired triband reconfigurable coplanar waveguide fed antenna.' Microwave and Optical Technology Letters, vol 60, no.6, pp. 1454-1459,2018.
Yasir, I., George, A., Abdulkareem, S., Husham, J., Ramzy, A., Raed, A., & James, M. Design of frequency reconfigurable multiband compact antenna using two PIN diodes for WLAN/WiMAX applications. Rope a dope poker tournaments. IET Institution of Engineering and Technology Microwaves. Antennas and Propagation, vol.11, no.8, pp. 1098-105,2017.
Rosaline, S. Imaculate, and S. Raghavan. 'Design of split ring antennas for WLAN and WiMAX applications.' Microwave and Optical Technology Letters, vol 58, no.9 pp.2117-2122, 2016.
Ali, Tanweer, Nikhat Fatima, and Rajashekhar C. Biradar. 'A miniaturized multiband reconfigurable fractal slot antenna for GPS/GNSS/Bluetooth/WiMAX/X-band applications.' AEU-International Journal of Electronics and Communications, vol.94, pp.234-243, 2018.
Gao, Guoping, et al. 'Investigation of a reconfigurable dual notched UWB antenna by conceptual circuit model and time‐domain characteristics.' Microwave and Optical Technology Letters, vol.59, no.6 pp.1326-1332,2017.
Liu, Pingan, et al. 'Compact CPW-fed tri-band printed antenna with meandering split-ring slot for WLAN/WiMAX applications.' IEEE Antennas and Wireless Propagation Letter, vol.1, pp.1242-1244, 2012.
Basaran, S. C., UlgurOlgun, and KubilaySertel. 'Multiband monopole antenna with complementary split-ring resonators for WLAN and WiMAX applications.' Electronics Letters, vol.49, no.10, pp.636-638,2014.
Braham Chaouche, Y., Bouttout, F., Nedil, M., Messaoudene, I., & Benmabrouk, I. 'A Frequency Reconfigurable U-Shaped Antenna for Dual-Band WIMAX/WLAN Systems'. Progress in Electromagnetics Research, vol.87, pp.63-71,2018.
Rajiya, S & Kumar, M. S, Frequency reconfigurable monopole antenna with DGS for ISM band applications. Journal of Electrical Engineering, vol. 69, no.4, pp. 293-299, 2018.
Babu, M. A., & Rao, M. V. 'Design and Analysis of Stepped Reconfigurable Rectangular Patch Antenna for LTE, Vehicular and Ultra-Wideband Applications'. International Journal of Engineering and Technology, vol.7, pp.548-553,2018.
Saravanan, M., & Rangachar, M. J. S, 'Circular Ring-Shaped Polarization Reconfigurable Antenna for Wireless Communications'. Progress in Electromagnetics Research, vol.74, pp.105-113, 2018.
Ojaroudi, S., Ojaroudi, Y., & Ojaroudi, N, 'Novel design of reconfigurable microstrip slot antenna with switchable band‐notched characteristic'. Microwave and Optical Technology Letters, vol 57, no.4, pp.849-853, 2015.
Design Of Frequency- And Pattern-reconfigurable Wideband Slot Antenna
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References
Ojaroudi, Sajjad, Yasser Ojaroudi, and Nasser Ojaroudi. 'Novel design of reconfigurable microstrip slot antenna with switchable band‐notched characteristic.' Microwave and Optical Technology Letters, vol.57, no.4, pp.849-853,2015.
Badamchi, Z., and Y. Zehforoosh. 'Switchable single/dual band filtering UWB antenna using parasitic element and T‐shaped stub wave cancellers.' Microwave and Optical Technology Letters, vol.57, no.12, pp. 2946-2950, 2015.
Selvam, YogeshwariPanneer, et al. 'Novel frequency-and pattern-reconfigurable rhombic patch antenna with switchable polarization.' IEEE Antennas and Wireless Propagation Letter, vol.16, pp.1639-1642,2017.
Rasool, Maryam, et al. 'A compact open complementary split ring resonator inspired triband reconfigurable coplanar waveguide fed antenna.' Microwave and Optical Technology Letters, vol 60, no.6, pp. 1454-1459,2018.
Yasir, I., George, A., Abdulkareem, S., Husham, J., Ramzy, A., Raed, A., & James, M. Design of frequency reconfigurable multiband compact antenna using two PIN diodes for WLAN/WiMAX applications. Rope a dope poker tournaments. IET Institution of Engineering and Technology Microwaves. Antennas and Propagation, vol.11, no.8, pp. 1098-105,2017.
Rosaline, S. Imaculate, and S. Raghavan. 'Design of split ring antennas for WLAN and WiMAX applications.' Microwave and Optical Technology Letters, vol 58, no.9 pp.2117-2122, 2016.
Ali, Tanweer, Nikhat Fatima, and Rajashekhar C. Biradar. 'A miniaturized multiband reconfigurable fractal slot antenna for GPS/GNSS/Bluetooth/WiMAX/X-band applications.' AEU-International Journal of Electronics and Communications, vol.94, pp.234-243, 2018.
Gao, Guoping, et al. 'Investigation of a reconfigurable dual notched UWB antenna by conceptual circuit model and time‐domain characteristics.' Microwave and Optical Technology Letters, vol.59, no.6 pp.1326-1332,2017.
Liu, Pingan, et al. 'Compact CPW-fed tri-band printed antenna with meandering split-ring slot for WLAN/WiMAX applications.' IEEE Antennas and Wireless Propagation Letter, vol.1, pp.1242-1244, 2012.
Basaran, S. C., UlgurOlgun, and KubilaySertel. 'Multiband monopole antenna with complementary split-ring resonators for WLAN and WiMAX applications.' Electronics Letters, vol.49, no.10, pp.636-638,2014.
Braham Chaouche, Y., Bouttout, F., Nedil, M., Messaoudene, I., & Benmabrouk, I. 'A Frequency Reconfigurable U-Shaped Antenna for Dual-Band WIMAX/WLAN Systems'. Progress in Electromagnetics Research, vol.87, pp.63-71,2018.
Rajiya, S & Kumar, M. S, Frequency reconfigurable monopole antenna with DGS for ISM band applications. Journal of Electrical Engineering, vol. 69, no.4, pp. 293-299, 2018.
Babu, M. A., & Rao, M. V. 'Design and Analysis of Stepped Reconfigurable Rectangular Patch Antenna for LTE, Vehicular and Ultra-Wideband Applications'. International Journal of Engineering and Technology, vol.7, pp.548-553,2018.
Saravanan, M., & Rangachar, M. J. S, 'Circular Ring-Shaped Polarization Reconfigurable Antenna for Wireless Communications'. Progress in Electromagnetics Research, vol.74, pp.105-113, 2018.
Ojaroudi, S., Ojaroudi, Y., & Ojaroudi, N, 'Novel design of reconfigurable microstrip slot antenna with switchable band‐notched characteristic'. Microwave and Optical Technology Letters, vol 57, no.4, pp.849-853, 2015.
Design Of Frequency- And Pattern-reconfigurable Wideband Slot Antenna
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Frequency And Pattern Reconfigurable Slot Antenna Calculator
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