Compact microstrip patch antenna

Abstract

Thia article describes the design and dec,elopment of a relatively compact microstrip patch antenna. At resonance. the lengih of the antenna is approxitnate!v one-eigh fh of the effecticr waL,elength. The currenf distribution on the patch surface has been analyzed with the use of the mefhod of momentsABSTRACT An optically preamplified pulse position modulation (PPM) system operating at 622 Mbit/ s and h = 1.53 p m is analyzed, and is shown to offer a sensiticQ benefit of 9.2 dB oc,er an equiralent OOK system. Fiber chromatic dispersion is taken into account and is used to estimate the receiced pulse shape. Pulse dispersion can potentially induce a significant performance penalty in PPM system because of the temporal nature of the PPM format. Thr results show that for a transmitted pulse of duration 80 ps, the receiced pulses have full widths at half maximum (FWHM) of 160 and 320ps forfiber lengths equaling 120 and 240 km, respectiL,ely. The system sensitivity degradation due to dispersion is explicitly eilaluated. It is shown that a sensitivivpenal(y of up to 5 dB can be incurred over the transmission spans considered. 0 1996 John Mley & sons, Inc.

Bio-inspired optimization algorithms applied to rectenna design

“…With the field expression derived according to the cavity model [9,25], the conductance of a single slot is defied as follows: where P rad is defined as the radiated power which can be calculated by [25,26]:…”

“…Thus, the effective dielectric constant eff and effective patch width L eff are introduced to take account of the fringing effect. Accordingly, the resonant frequency of the dominant mode of the RMPA is derived as [9,24,25].…”

“…In the case of a RMPA with two radiating slots, the antenna directivity can be calculated by following equation [24,25]. (25) where the directivity for an antenna with one slot D 0 is defined as [24]:…”

Bio-inspired optimization algorithms applied to rectenna design

“…With the field expression derived according to the cavity model [9,25], the conductance of a single slot is defied as follows: where P rad is defined as the radiated power which can be calculated by [25,26]:…”

“…Thus, the effective dielectric constant eff and effective patch width L eff are introduced to take account of the fringing effect. Accordingly, the resonant frequency of the dominant mode of the RMPA is derived as [9,24,25].…”

“…In the case of a RMPA with two radiating slots, the antenna directivity can be calculated by following equation [24,25]. (25) where the directivity for an antenna with one slot D 0 is defined as [24]:…”

Software Defined Antenna Testing

“…Microstrip patch directional antennas have been used in many applications [14] - [16], because of their low profile, conformability, light weight, easy connectivity (feed), cheap realization and attractive radiation characteristics. A microstrip patch antenna is a wide-beam, narrowband antenna which is created by etching the antenna element (patch) in a metal trace material bonded to an isolating dielectric substrate [17].…”

Contribution to the miniaturization of antennas: State of the art

“…This method is widely used to miniaturize the Micro Strip Patch Antenna (MPA), several works [27][28][29][30][31][32][33][34][35][36][37][38][39] have appeared in the literature in which the size of the MPA has been reduced by introducing various types of slots in the MPA. The use of this method generally leads to poor polarization purity.…”

Bio-inspired optimization algorithms applied to rectenna design

“…With the field expression derived according to the cavity model [9,25], the conductance of a single slot is defied as follows: where P rad is defined as the radiated power which can be calculated by [25,26]:…”

“…Thus, the effective dielectric constant eff and effective patch width L eff are introduced to take account of the fringing effect. Accordingly, the resonant frequency of the dominant mode of the RMPA is derived as [9,24,25].…”

“…In the case of a RMPA with two radiating slots, the antenna directivity can be calculated by following equation [24,25]. (25) where the directivity for an antenna with one slot D 0 is defined as [24]:…”

Software Defined Antenna Testing

“…Microstrip patch directional antennas have been used in many applications [14] - [16], because of their low profile, conformability, light weight, easy connectivity (feed), cheap realization and attractive radiation characteristics. A microstrip patch antenna is a wide-beam, narrowband antenna which is created by etching the antenna element (patch) in a metal trace material bonded to an isolating dielectric substrate [17].…”

Contribution to the miniaturization of antennas: State of the art

“…This method is widely used to miniaturize the Micro Strip Patch Antenna (MPA), several works [27][28][29][30][31][32][33][34][35][36][37][38][39] have appeared in the literature in which the size of the MPA has been reduced by introducing various types of slots in the MPA. The use of this method generally leads to poor polarization purity.…”

Bio-inspired optimization algorithms applied to rectenna design

“…With the field expression derived according to the cavity model [9,25], the conductance of a single slot is defied as follows: where P rad is defined as the radiated power which can be calculated by [25,26]:…”

“…Thus, the effective dielectric constant eff and effective patch width L eff are introduced to take account of the fringing effect. Accordingly, the resonant frequency of the dominant mode of the RMPA is derived as [9,24,25].…”

“…In the case of a RMPA with two radiating slots, the antenna directivity can be calculated by following equation [24,25]. (25) where the directivity for an antenna with one slot D 0 is defined as [24]:…”

Software Defined Antenna Testing

“…Microstrip patch directional antennas have been used in many applications [14] - [16], because of their low profile, conformability, light weight, easy connectivity (feed), cheap realization and attractive radiation characteristics. A microstrip patch antenna is a wide-beam, narrowband antenna which is created by etching the antenna element (patch) in a metal trace material bonded to an isolating dielectric substrate [17].…”

Contribution to the miniaturization of antennas: State of the art

“…This method is widely used to miniaturize the Micro Strip Patch Antenna (MPA), several works [27][28][29][30][31][32][33][34][35][36][37][38][39] have appeared in the literature in which the size of the MPA has been reduced by introducing various types of slots in the MPA. The use of this method generally leads to poor polarization purity.…”