Ajay Yadav

Design and Analysis of Right-Angled EBG Structure

A compact ultra-wideband microstrip antenna with double band-notched characteristics is presented in this paper. A circular split ring resonator (CSRR) and a Right Angled electromagnetic band gap (RA-EBG) design has been used to create double band-notched characteristics for WiMAX (3.3–3.6 GHz) and WLAN (5.1–5.8 GHz), respectively. Analysis of CSRR and RA-EBG shows EBG structure has advantages over CSRR to design notched band, such as tuneable notched frequency and notch-bandwidth controllable capacity. The proposed antenna has broad bandwidth and includes UWB band with VSWR <2.

Frequency reconfigurable antenna: Using pixel ground

A frequency reconfigurable microstrip antenna using pixel ground is presented in this paper. A rectangle microstrip antenna with the partial ground is used as a primary antenna which operates over UWB band (3.1–10.6 GHz). A further ground of primary antenna converted into reconfigurable pixel shape to operate over multiple frequency bands. Proposed frequency reconfigurable antenna is able to switch between multiple resonant frequencies using PIN diode. Proposed antenna covers 5.6/6.6/7.8/8.2/9.4/7/5.4/5.2 GHz bands for WLAN band and X-band. The proposed antenna is printed on 1.6 mm thick FR-4 substrate with dimension 34×42.5 mm2. The proposed antenna has broad bandwidth with VSWR < 2. Measured and simulated result of primary antenna is presented and has the good agreement with results.

Multiband antenna for Bluetooth/ZigBee/ Wi-Fi/WiMAX/WLAN/X-band applications: Partial ground with periodic structures and EBG

A compact in size microstrip antenna with multiband resonance features is described in this paper. A circular antenna with the partial ground is used as a primary antenna which resonated for WiMAX band (3.3–3.7 GHz). Further, primary antenna embedded with mushroom shape EBG (Electromagnetic Band Gap) and periodic DGS (Defected Ground Structure) to operate over WLAN band (5.1–5.8 GHz) and X-band from 8–12 GHz. Proposed antenna covers 2.4/3.5/5.5 GHz bands and complete X-band which also reflects that it has novel suitability to use for a ZigBee/Wi-Fi/Bluetooth applications. The proposed antenna is etched on FR-4 substrate and overall dimension is 20×26×1.6 mm3. The projected antenna has wide-ranging bandwidth with VSWR < 2. It provides favorable agreement between measured and simulated results.