Design of a X band defected ground circular patch antenna with diamond shaped slot and ring in patch for UWB applications

In this paper, we have proposed a semi-circular patch antenna with a slot in the patch and a ground plane with a notch. The proposed antenna is designed using FR-4 substrate with a dielectric constant of 4.4 and the height of the substrate is 1.6mm. We simulated the antenna using HFSS and obtained the S11 < -10dB in the range of 3GHz to 15GHz, which covers the UWB range of 3.1GHz to 10.6GHz. An active circuit is designed and simulated using ADS to improve the gain of the antenna when working in a lossy medium other than air.

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A CPW-fed circular patch antenna inspired by reduced ground plane and CSRR slot for UWB applications with notch band

Microwave and Optical Technology Letters ◽

10.1002/mop.30386 ◽

2017 ◽

Vol 59 (4) ◽

pp. 745-749 ◽

Cited By ~ 7

Author(s):

R. Boopathi Rani ◽

S.K. Pandey

Keyword(s):

Patch Antenna ◽

Ground Plane ◽

Circular Patch ◽

Notch Band ◽

Circular Patch Antenna ◽

Uwb Applications

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Gain enhancement over a wideband in CPW-fed compact circular patch antenna

International Journal of Microwave and Wireless Technologies ◽

10.1017/s1759078713001037 ◽

2013 ◽

Vol 6 (5) ◽

pp. 497-503 ◽

Cited By ~ 4

Author(s):

Kirti Vyas ◽

Garima Sanyal ◽

Arun Kumar Sharma ◽

Pramod Kumar Singhal

Keyword(s):

Patch Antenna ◽

Coplanar Waveguide ◽

Impedance Bandwidth ◽

Defected Ground Structure ◽

Ground Structure ◽

Radiation Characteristics ◽

Circular Patch ◽

Gain Enhancement ◽

X Band ◽

Circular Patch Antenna

The present paper reports the gain enhancement over a wideband (12–15 GHz) in a coplanar waveguide (CPW)-fed circular patch antenna with circular defected ground structure (DGS). Two compact coplanar circular antennas have been designed and fabricated with and without DGS of same volume 18 × 20 × 1.6 mm3, built over FR4-epoxy substrate (εr = 4.4). Gain enhancement has been achieved by optimizing the current distribution with suitable DGS. For this purpose, structural designs have been optimized by parametric simulations in HFSS and CST MWS. Both the antennas can perform well in variety of wireless communication including WLAN IEEE 802.11 g/a (5.15–5.35 GHz and 5.725–5.825 GHz) and X-band applications including short range, tracking, missile guidance, and radar communication that ranges roughly from 8.29 to 11.4 GHz. The measured experimental results show that impedance bandwidth (S11 < −10 dB) of antenna with DGS is 100%. The antenna with DGS offers gain improvement by 2.7 dB for 13 GHz and 7 dB for 14 GHz. The performance of antenna with DGS is compared to conventional CPW-fed circular patch antenna (without DGS) in terms of reflection coefficient, radiation characteristics, and gain.

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