A comparative study of compact coplanar-waveguide (CPW) fed ultrawideband (UWB) printed monopole ... more A comparative study of compact coplanar-waveguide (CPW) fed ultrawideband (UWB) printed monopole antenna (PMA) with triple frequency notching achieved by using single ring split ring resonators (SRR) is presented and validated here on two different substrates such as FR4 Epoxy material and RT Duroid 5870 material. Here also a comparative design study made on two substrates in order to study the effect of permittivity and height of substrates on this antenna. Here the antenna loaded with three single ring SRRs to create triple band notches, in 3.5 GHz for WiMAX, 5.5 GHz for WLAN, and 7.9 GHz for X-band satellite communication systems, respectively. Return loss and voltage standing wave ratio (VSWR) are used to show the effect of these rings. The measured result shows a close correlation to the theoretical results.
Now a day's UWB antenna design is one of the challenging areas. This paper proposes a simple ... more Now a day's UWB antenna design is one of the challenging areas. This paper proposes a simple method for filtering out 3.5GHz WiMAX band which is an already allocated band in UWB spectrum. Single circular Split Ring Resonator (SRR) is loaded on the back side of a coplanar feed printed planar monopole antenna. Coupling between the signal and SRR gives notch at frequencies.
A comparative study of compact coplanar-waveguide (CPW) fed ultrawideband (UWB) printed monopole ... more A comparative study of compact coplanar-waveguide (CPW) fed ultrawideband (UWB) printed monopole antenna (PMA) with triple frequency notching achieved by using single ring split ring resonators (SRR) is presented and validated here on two different substrates such as FR4 Epoxy material and RT Duroid 5870 material. Here also a comparative design study made on two substrates in order to study the effect of permittivity and height of substrates on this antenna. Here the antenna loaded with three single ring SRRs to create triple band notches, in 3.5 GHz for WiMAX, 5.5 GHz for WLAN, and 7.9 GHz for X-band satellite communication systems, respectively. Return loss and voltage standing wave ratio (VSWR) are used to show the effect of these rings. The measured result shows a close correlation to the theoretical results.
According to federal communication commission (FCC) rules, from 2002 onwards the 3.1 10.6 GHz ban... more According to federal communication commission (FCC) rules, from 2002 onwards the 3.1 10.6 GHz band is allocated to the ultra wideband (UWB) applications [1]. UWB technology has several advantages like very wide bandwidth of 7.5 GHZ (from 3.1 to 10.6 GHz) compared to many other existing wireless communication standards [4] and low cost, simple RF circuitry, high data rates and low average radiated power [2][3]. UWB applications can coexist with other narrowband communication standards that occupy the same spectrum due to the limitation of power level. But this will causes a severe interference between the UWB systems and narrow band systems. There are some narrow frequency bands that currently allocated various applications such as Wireless Local Area Network(WLAN) bands in the 2.4GHz(2.4–2.484GHz), 5.2GHz (5.15–5.35GHz),and 5.8GHz(5.725–5.825GHz) bands, World Interoperability for Microwave Access (WiMAX) system bands 2.5GHz(2.5–2.69GHz), 3.5GHz (3.4–3.69GHz), and 5.8GHz (5.25–5.825G...
A compact coplanar waveguide (CPW) fed ultrawideband (UWB) printed circular monopole antenna (PMA... more A compact coplanar waveguide (CPW) fed ultrawideband (UWB) printed circular monopole antenna (PMA) with triple frequency notched function is presented and validated here on a low cost FR4 Epoxy substrate. Here the antenna loaded with three single circular ring SRRs to create triple frequency notching in 3.5 GHz for WiMAX, 5.5 GHz for WLAN, and 7.9 GHz for X-band satellite communication systems, respectively. The SRR design equations are analyzed in detail here. Return loss and voltage standing wave ratio (VSWR) are used to show the effect of these rings. Measured result shows a close correlation to the theoretical results.
A comparative study of compact coplanar-waveguide (CPW) fed ultrawideband (UWB) printed monopole ... more A comparative study of compact coplanar-waveguide (CPW) fed ultrawideband (UWB) printed monopole antenna (PMA) with triple frequency notching achieved by using single ring split ring resonators (SRR) is presented and validated here on two different substrates such as FR4 Epoxy material and RT Duroid 5870 material. Here also a comparative design study made on two substrates in order to study the effect of permittivity and height of substrates on this antenna. Here the antenna loaded with three single ring SRRs to create triple band notches, in 3.5 GHz for WiMAX, 5.5 GHz for WLAN, and 7.9 GHz for X-band satellite communication systems, respectively. Return loss and voltage standing wave ratio (VSWR) are used to show the effect of these rings. The measured result shows a close correlation to the theoretical results.
Now a day's UWB antenna design is one of the challenging areas. This paper proposes a simple ... more Now a day's UWB antenna design is one of the challenging areas. This paper proposes a simple method for filtering out 3.5GHz WiMAX band which is an already allocated band in UWB spectrum. Single circular Split Ring Resonator (SRR) is loaded on the back side of a coplanar feed printed planar monopole antenna. Coupling between the signal and SRR gives notch at frequencies.
A comparative study of compact coplanar-waveguide (CPW) fed ultrawideband (UWB) printed monopole ... more A comparative study of compact coplanar-waveguide (CPW) fed ultrawideband (UWB) printed monopole antenna (PMA) with triple frequency notching achieved by using single ring split ring resonators (SRR) is presented and validated here on two different substrates such as FR4 Epoxy material and RT Duroid 5870 material. Here also a comparative design study made on two substrates in order to study the effect of permittivity and height of substrates on this antenna. Here the antenna loaded with three single ring SRRs to create triple band notches, in 3.5 GHz for WiMAX, 5.5 GHz for WLAN, and 7.9 GHz for X-band satellite communication systems, respectively. Return loss and voltage standing wave ratio (VSWR) are used to show the effect of these rings. The measured result shows a close correlation to the theoretical results.
According to federal communication commission (FCC) rules, from 2002 onwards the 3.1 10.6 GHz ban... more According to federal communication commission (FCC) rules, from 2002 onwards the 3.1 10.6 GHz band is allocated to the ultra wideband (UWB) applications [1]. UWB technology has several advantages like very wide bandwidth of 7.5 GHZ (from 3.1 to 10.6 GHz) compared to many other existing wireless communication standards [4] and low cost, simple RF circuitry, high data rates and low average radiated power [2][3]. UWB applications can coexist with other narrowband communication standards that occupy the same spectrum due to the limitation of power level. But this will causes a severe interference between the UWB systems and narrow band systems. There are some narrow frequency bands that currently allocated various applications such as Wireless Local Area Network(WLAN) bands in the 2.4GHz(2.4–2.484GHz), 5.2GHz (5.15–5.35GHz),and 5.8GHz(5.725–5.825GHz) bands, World Interoperability for Microwave Access (WiMAX) system bands 2.5GHz(2.5–2.69GHz), 3.5GHz (3.4–3.69GHz), and 5.8GHz (5.25–5.825G...
A compact coplanar waveguide (CPW) fed ultrawideband (UWB) printed circular monopole antenna (PMA... more A compact coplanar waveguide (CPW) fed ultrawideband (UWB) printed circular monopole antenna (PMA) with triple frequency notched function is presented and validated here on a low cost FR4 Epoxy substrate. Here the antenna loaded with three single circular ring SRRs to create triple frequency notching in 3.5 GHz for WiMAX, 5.5 GHz for WLAN, and 7.9 GHz for X-band satellite communication systems, respectively. The SRR design equations are analyzed in detail here. Return loss and voltage standing wave ratio (VSWR) are used to show the effect of these rings. Measured result shows a close correlation to the theoretical results.
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Papers by Anju Chandran