Ananjan Basu - Academia.edu (original) (raw)
Papers by Ananjan Basu
Tapered-CPW fed printed triangular monopole antenna
European Conference on Antennas and Propagation, 2006
A compact triangular monopole antenna fed by a tapered-coplanar waveguide (CPW) is presented. The... more A compact triangular monopole antenna fed by a tapered-coplanar waveguide (CPW) is presented. The simulated and measured return loss results are presented. The proposed antenna offers a wide bandwidth from 4.14¿9.84 GHz (81%) covering WLAN frequency bands for IEEE 802.11a and HiperLAN2 as is seen from the measured results.
Microwave and Optical Technology Letters, 2010
A band notched CPW UWB filter backed by rectangular rings is proposed.Initially, cascading of ape... more A band notched CPW UWB filter backed by rectangular rings is proposed.Initially, cascading of aperture-backed second-order microstrip filters is done to achieve the UWB passband. Later, to take advantage of the CPW geometry, the filter is converted to CPW configuration with rings at the back to achieve sharp cutoff characteristics and a notch at 5.1 GHz. © 2010 Wiley Periodicals, Inc. Microwave Opt Technol Lett 52:950–954, 2010; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.25088
2008 Asia-Pacific Microwave Conference, 2008
Frequency reconfigurable active antenna
2014 International Symposium on Antennas and Propagation Conference Proceedings, 2014
Parametric Study of a Parasitically-fed Broadband Monopole Patch Antenna
A monopole printed patch antenna parasitically fed by an inverted-L shaped monopole is proposed f... more A monopole printed patch antenna parasitically fed by an inverted-L shaped monopole is proposed for broadband applications in IEEE 802.11a/HiperLAN2 bands. The effect of various physical parameters, such as, dimensions of the parasitic element, coupling between inverted-L shaped monopole feed and the parasitic element is studied. A prototype antenna is fabricated with its dimensions optimized and its simulated and measured
Microwave and Optical Technology Letters, 2008
Compact UWB bandpass filters using stub-loaded ring and triangular resonators fed with capacitive... more Compact UWB bandpass filters using stub-loaded ring and triangular resonators fed with capacitive-ended interdigital coupled lines are proposed. The proposed structures are fed with capacitive-ended interdigital coupled lines. The measured insertion loss for ring resonator filter is 1.0 dB and that for triangular resonator is 2.0 dB with corresponding group delays of 0.6 and 0.3 ns, respectively. These filters show sharp transitions at the edges of the UWB passband and improved out-of-band performance. The simulated and measured results are in good agreement and satisfy the FCC mask for indoor applications. © 2008 Wiley Periodicals, Inc. Microwave Opt Technol Lett 50: 2917–2922, 2008; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.23834
A Planar End-fire Array in S-band for Airborne Applications
IETE Journal of Research, 2012
ABSTRACT Planar end-fire arrays can be used in airborne radar applications for forward and rear v... more ABSTRACT Planar end-fire arrays can be used in airborne radar applications for forward and rear vision. The purpose of this work is to demonstrate the viability of constructing end-fire arrays with good bandwidth and front-to-back (f/b) ratio. The array so constructed must be extendable to a large number (possibly > 1 000) of elements depending on the platform. In this work, starting from a basic S-band 2x2 array, arrays with higher number of elements have been studied through simulations such as 4x4, 4x8, and 2x16 configurations. An end-fire array comprising 4x8 elements (uniformly excited) has been successfully fabricated and tested giving a f/b ratio of 15 dB, and directivity 15 dB and an array comprising 4x8 elements excited by coefficients of Chebyshev polynomials has been simulated which gives a f/b ratio of 25 dB and similar directivity. Beam steering simulations show that the 4x8 array can be steered to 25 degrees with acceptable side lobe levels.
Tapered-CPW fed printed triangular monopole antenna
European Conference on Antennas and Propagation, 2006
A compact triangular monopole antenna fed by a tapered-coplanar waveguide (CPW) is presented. The... more A compact triangular monopole antenna fed by a tapered-coplanar waveguide (CPW) is presented. The simulated and measured return loss results are presented. The proposed antenna offers a wide bandwidth from 4.14¿9.84 GHz (81%) covering WLAN frequency bands for IEEE 802.11a and HiperLAN2 as is seen from the measured results.
Microwave and Optical Technology Letters, 2010
A band notched CPW UWB filter backed by rectangular rings is proposed.Initially, cascading of ape... more A band notched CPW UWB filter backed by rectangular rings is proposed.Initially, cascading of aperture-backed second-order microstrip filters is done to achieve the UWB passband. Later, to take advantage of the CPW geometry, the filter is converted to CPW configuration with rings at the back to achieve sharp cutoff characteristics and a notch at 5.1 GHz. © 2010 Wiley Periodicals, Inc. Microwave Opt Technol Lett 52:950–954, 2010; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.25088
2008 Asia-Pacific Microwave Conference, 2008
Frequency reconfigurable active antenna
2014 International Symposium on Antennas and Propagation Conference Proceedings, 2014
Parametric Study of a Parasitically-fed Broadband Monopole Patch Antenna
A monopole printed patch antenna parasitically fed by an inverted-L shaped monopole is proposed f... more A monopole printed patch antenna parasitically fed by an inverted-L shaped monopole is proposed for broadband applications in IEEE 802.11a/HiperLAN2 bands. The effect of various physical parameters, such as, dimensions of the parasitic element, coupling between inverted-L shaped monopole feed and the parasitic element is studied. A prototype antenna is fabricated with its dimensions optimized and its simulated and measured
Microwave and Optical Technology Letters, 2008
Compact UWB bandpass filters using stub-loaded ring and triangular resonators fed with capacitive... more Compact UWB bandpass filters using stub-loaded ring and triangular resonators fed with capacitive-ended interdigital coupled lines are proposed. The proposed structures are fed with capacitive-ended interdigital coupled lines. The measured insertion loss for ring resonator filter is 1.0 dB and that for triangular resonator is 2.0 dB with corresponding group delays of 0.6 and 0.3 ns, respectively. These filters show sharp transitions at the edges of the UWB passband and improved out-of-band performance. The simulated and measured results are in good agreement and satisfy the FCC mask for indoor applications. © 2008 Wiley Periodicals, Inc. Microwave Opt Technol Lett 50: 2917–2922, 2008; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.23834
A Planar End-fire Array in S-band for Airborne Applications
IETE Journal of Research, 2012
ABSTRACT Planar end-fire arrays can be used in airborne radar applications for forward and rear v... more ABSTRACT Planar end-fire arrays can be used in airborne radar applications for forward and rear vision. The purpose of this work is to demonstrate the viability of constructing end-fire arrays with good bandwidth and front-to-back (f/b) ratio. The array so constructed must be extendable to a large number (possibly > 1 000) of elements depending on the platform. In this work, starting from a basic S-band 2x2 array, arrays with higher number of elements have been studied through simulations such as 4x4, 4x8, and 2x16 configurations. An end-fire array comprising 4x8 elements (uniformly excited) has been successfully fabricated and tested giving a f/b ratio of 15 dB, and directivity 15 dB and an array comprising 4x8 elements excited by coefficients of Chebyshev polynomials has been simulated which gives a f/b ratio of 25 dB and similar directivity. Beam steering simulations show that the 4x8 array can be steered to 25 degrees with acceptable side lobe levels.