A Bowtie Shaped Frequency Reconfigurable Microstrip Patch Antenna with Wide Coverage Area

Rawal, Pallav; Rawat, Sanyog

doi:10.1109/icraie51050.2020.9358341

Cited by 6 publications

(4 citation statements)

References 11 publications

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“…In the conductor backed CPW the characteristic impedance is easily controlled by adjusting gap and width of coplanar ground. The characteristic impedance of conductor backed CPW is lower than the normal CPW (Garg et al , 2001; Wadell, 1991; Rawal and Rawat, 2020). When the normal CPW was used in the design, the impedance matching is very poor, because the impedance of CPW was very large from port impedance.…”

Section: Antenna Designmentioning

confidence: 99%

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A novel S-shaped frequency and pattern reconfigurable patch antenna for 4G LTE, WLAN/Wi-Max application

Rawal

Rawat²

2022

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Purpose In wireless communication system, use of multiple antennas for different requirements of system will increase the system complexity. However, reconfigurable antenna is maximizing the connectivity to cover different wireless services that operate different frequency range. Pattern reconfigurable antenna can improve security, avoid noise and save energy. Due to their compactness and better performance at different applications, reconfigurable antennas are very popular among the researchers. The purpose of this work, is to propose a novel design of S-shaped antenna with frequency and pattern diversity. The pattern and frequency reconfiguration are controlled via ON/OFF states of the PIN diode. Design/methodology/approach The geometrical structure of the proposed antenna dimension is 18 × 18 × 0.787 mm3 with εr = 2.2 dielectric constant. Three S-shaped patches are connected to a ring patch through PIN diodes. The approximate circumference of ring patch is 18.84 mm and length of patch is 5 mm, so approximate length of radiating patch is 14.42 mm and effective dielectric constant is 1.93. Conductor backed coplanar waveguide (CPW) is used for feeding. The proposed antenna is designed and simulated on CST microwave studio and fabricated using photolithography process. Measurements have been done in anechoic chamber. Findings Antenna shows the dual band operation at 2.1 and 3.4 GHz frequency. The first band remains constant at 2.1 GHz resonant frequency and 200–400 MHz impedance bandwidth. Second band is switched at seven different resonant frequencies as 3.14, 3.45, 3.46, 3.68, 3.69, 3.83 and 3.86 GHz with switching of the diodes. The −10 dB bandwidth is more than 1.4 GHz. Research limitations/implications Pattern reconfigurability can be achieved using mechanical movement of antenna easily but it is not a reliable approach for planar antennas. Electronic switching method is used in proposed antenna. Antenna size is very small so fabrication is very crucial task. Measured results are deviated from simulation results due to fabrication error and effect of leads of diodes, connecting wires and battery. Practical implications The reconfiguration of the proposed antenna is controlled via ON/OFF states of the three PIN diodes. The lower band of 2.1 GHz is fixed, while second band is switched at five different resonant frequencies as 3.27, 3.41, 3.45, 3.55 and 3.88 GHz, with switching of the PIN diodes with all state of diodes and exhibit pattern reconfigurability at 2.1 GHz frequency. At second band center frequency is significantly changed with state of diodes and at 3.4 GHz pattern is also changed with state of diodes, hence antenna exhibits frequency and pattern reconfigurability. Originality/value A novel design of pattern and frequency reconfigurable antenna is proposed. Here, work is divided into two parts: first is frequency reconfiguration and second is radiation pattern reconfiguration. PIN diodes as switch are used to select the frequency band and reconfigure the radiation pattern. This proposed antenna design is novel dual band frequency and pattern reconfigurable antenna. It resonates at two distinct frequencies, i.e. 2.1 and 3.4 GHz, and has a pattern tilt from 0° to 355°. The conductor backed CPW feed technique is used for impedance matching.

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Section: Antenna Designmentioning

confidence: 99%

“…When the normal CPW was used in the design, the impedance matching is very poor, because the impedance of CPW was very large from port impedance. The impedance of CPW was reduced due to use of conductor backed CPW and it is matched with port (Rawal and Rawat, 2020).…”

Section: Antenna Designmentioning

confidence: 99%

A novel S-shaped frequency and pattern reconfigurable patch antenna for 4G LTE, WLAN/Wi-Max application

Rawal

Rawat²

2022

Self Cite

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“…The antennas are one of the main components in these communicating systems and their tunability allows for a reduced size in a multiple standards system. They can be tuned in terms of frequency [1][2][3][4][5][6][7][8][9] in order to work in several frequency bands of radiation patterns [10,11] in order to modify the orientation of the beam and the polarization [12][13][14][15][16][17][18][19][20][21]. Among the various topologies of antennas, microstrip patch antennas are very common antennas used for their compactness, ease of manufacture and low cost.…”

Section: Introductionmentioning

confidence: 99%

On-Chip Polarization Reconfigurable Microstrip Patch Antennas Using Semiconductor Distributed Doped Areas (ScDDAs)

et al. 2022

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This paper presents two polarization reconfigurable patch antennas using semiconductor distributed doped areas (ScDDAs) as active components. One proposed antenna has a switching polarization between two linear ones, while the other one has a polarization able to commute from a linear to a circular one. The antennas are designed on a silicon substrate in order to have the ScDDAs integrated in the substrate, overcoming the needs of classical PIN diodes. Therefore, the proposed co-design method between the antenna and the ScDDAs permits us to optimize the global reconfigurable function, designing both parts in the same process flow. Both demonstrators have a resonant frequency of around 5 GHz. The simulated results fit well with the measured ones.

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“…Surface integrated waveguide and PIN diode as control element [10], cross aperture with RF switch [11], corner truncated perturbation, PIN diode and single feed [15],two feed at adjacent edge [16], monopole antenna with two conducting strips in ground plane controlled by PIN diode [21], circular patch antenna fed at four different points and controlled using PIN diode [22], two orthogonal meandered monopole fed by Wilkinson power divider and phase shifter and controlled by PIN diode [23], four straight dipole with six pair of pin diodes [31],diagonally fed square patch with parasitic stubs and pin diode [32] discontinuous ring dipole with pin diode [33] are used to achieve polarization reconfigurable antenna. [13], [14], [15], [16], [19], [20] are frequency reconfigurable antenna, in which PIN diode are used as a control element to change electrical length to achieve frequency reconfigurability.…”

Section: Introductionmentioning

confidence: 99%

A frequency and polarization reconfigurable L shaped patch antenna with defected ground structure

Rawal

Rawat

2021

Scientia Iranica

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A novel geometry of polarization and frequency reconfigurable antenna is proposed in this paper. Proposed antenna consists of an L shaped patch antenna, where arms are separated using PIN-diode. Two parasitic elements, shorted back element and edge tapered defected ground structure with slot are used for achieving wide impedance and axial ratio bandwidth. It acts as circular polarized antenna with 1.183 GHz axial ratio band width and3.09 GHz impedance bandwidth in ON state of both diodes and act as linear polarized frequency reconfigurable antenna at remaining states of diodes.

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A Bowtie Shaped Frequency Reconfigurable Microstrip Patch Antenna with Wide Coverage Area

Cited by 6 publications

References 11 publications

A novel S-shaped frequency and pattern reconfigurable patch antenna for 4G LTE, WLAN/Wi-Max application

A novel S-shaped frequency and pattern reconfigurable patch antenna for 4G LTE, WLAN/Wi-Max application

On-Chip Polarization Reconfigurable Microstrip Patch Antennas Using Semiconductor Distributed Doped Areas (ScDDAs)

A frequency and polarization reconfigurable L shaped patch antenna with defected ground structure

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