Multipurpose microstrip battery strength indicator patch antenna using coaxial feed

The battery strength indicator provided in the taskbar of a PC/ Laptop (usually at the bottom of the desktop) indicates the current battery strength available to the user. The position of this battery strength indicator on the main screen varies from device to device and this indicator describes the required level of charging and duration it would take for the device to reach a completely charged level. The creative design of a similar battery strength indicator antenna has been proposed in this paper. The structure utilizes a 34.5 mm × 62.5 mm × 1.6 mm FR4 epoxy substrate with a relative permittivity of 4.4 and a dielectric loss tangent of 0.002. The design also makes use of a coaxial/probe feeding mechanism owing to the numerous offered advantages. HFSS (High Frequency Structure Simulator) software has been used for simulation purpose. The design offers 4 band of frequencies including the resonance frequencies of 3.06 GHz with a peak gain of 3.6 dBi and a 3 dB bandwidth of 22 MHz, 4.03 GHz with a peak gain of 10.9 dBi and a 3 dB bandwidth of 24 MHz, band of 97 MHz containing frequencies 5.38 GHz with a peak gain of 12.9 dBi and 5.97 GHz with a peak gain of 10.7 dBi, 7.23 GHz with a peak gain of 6.9 dBi and a 21 MHz bandwidth and a 1.2 GHz band containing 8.38 GHz and 9.01 GHz frequencies with respective peak gains of 3.6 dBi and 2.2 dBi. The 22 MHz bandwidth may be used for radio location, 24 MHz bandwidth for fixed satellite (space to earth), 97 MHz bandwidth for earth exploration satellite, mobile except aeronautical mobile, radio location and space research and a 1.2 GHz band for earth exploration satellite (space to earth), fixed satellite (Earth to space), fixed mobile except aeronautical mobile, space research (space to earth) and radio location.