Deepanshu Kaushal

Danger microstrip patch antenna for fixed satellite applications

This paper proposes the rare innovative design and a brief discuddion on results of a dual band danger microstrip patch antenna that can be employed for multiple space applications. The design symbolizes the danger indication normally viewed on road sites mostly on electric poles. A 80 mm × 105 mm FR4 epoxy substrate with a relative permittivity of 4.4 and a thickness of 1.6 mm is used. In addition to being a part of the design, the circular slots also offer a reduction in the area occupied by the patch. The probe feeding technique has been utilized. HFSS v-15 software is used for simulation. The designed antenna has a peak gain of 1.6 dBi at 2.7 GHz with a bandwidth of 12 MHz that may be used in earth exploration satellites, radio astronomy, space research and aviation purpose. Additionally, a maximum gain of 4.9dBiat 4.57 GHz with a bandwidth of 4.61 MHz is obtained that can be used in fixed satellite applications.

Design and optimization of microstrip swastik patch antenna for space applications

This paper proposes a three stage optimized design of microstrip swastik patch antenna for wireless communications. A FR4 epoxy substrate of dielectric permittivity 4.4 and loss tangent .0002 is used. The design uses coaxial feeding technique. The simulation software used is HFSS. Each of the design is analyzed and then compared at its best resonant frequencies in terms of return loss, bandwidth, radiation pattern, gain, directivity, VSWR and field patterns. The initially proposed design attains a maximum gain of 4.7dBi at 4.79 GHz with a bandwidth of 25.4 MHz. The first variant attains a peak gain of 3.3 dBi at 4.79 GHz and a 60.7 MHz bandwidth. The two designs, thus, can be utilized for fixed satellite applications. The final variant has a maximum gain of 13.3dBi at 2.63 GHz with a bandwidth of 10 MHz to be used for fixed satellite, mobile except aeronautical mobile and broadcast satellite applications.

Design of multi utility multi band microstrip calculator shaped patch antenna using coaxial feed

This paper demonstrates the structure and the result characterization of a multi band microstrip patch antenna closely resembling Microsoft Calculator Accessory logo. This antenna is intended to be used for several applications. The substrate used is FR4 epoxy substrate with a relative permittivity of 4.4, dielectric loss tangent of 0.002 and a thickness of 1.6 mm. The design uses a probe feeding mechanism owing to numerous advantages offered by it. The simulation software used is HFSS (High Frequency Structure Simulator). The structure resonates at 6 different frequencies including 1.2 GHz offering a reflection coefficient of −24.9 dB and a bandwidth of 47 MHz for aeronautical radio navigation, 1.53 GHz with a reflection coefficient of −16.9 dB and a bandwidth of 74.2 MHz for satellite communication, 2.56 GHz with a reflection coefficient of −29.7 dB and bandwidth of 121.7 MHz for wireless communication, 1.962 dB at 3.27 GHz with a reflection coefficient of −12.3 dB and a bandwidth of 62.7 MHz for private land mobile devices, 3.89 GHz with a reflection coefficient of −13.4 dB and a bandwidth of 68.4 MHz for fixed microwave devices and 5.91 GHz with a reflection coefficient of −17.3 dB and a bandwidth of 340 MHz for ISM equipment, personal land mobile, personal radio and amateur radio.

Dual band microstrip caution patch antenna for space applications

The design of a dual band microstrip Caution Patch antenna useful for private land mobile and aviation applications has been proposed in this paper. Under these applications, the design may encompass fixed satellite services, mobile except aeronautical mobile, radiolocation and aeronautical radio navigation. The FR4 epoxy substrate having a relative permittivity of 4.4 and a thickness of 1.6 mm is used. The utilized probe feeding technique is simple to fabricate and match, provides low spurious radiations and is simple to match by controlling the position. The antenna resonates with a peak gain of 6.3 dBi at 3.52 GHz offering a bandwidth of 111.9 MHz and yet another at 4.39 GHz with a gain of 20.4 dBi and a bandwidth of 8.02MHz.

Comparative analysis of microstrip moody patch antenna for space applications

This paper draws a comparison between thestructural variants and the corresponding result characterizations of a compact microstrip moody patch antenna at their resonant frequencies in terms of reflection coefficient, bandwidth, radiation pattern, gain, VSWR and directivity and brings the best out of them. The structures have been built over a 53 mm × 50 mm × 1.6 mm FR4 epoxy substrate with a relative permittivity of 4.4 and a dielectric loss tangent of 0.02. The coaxial feeding mechanism has been employed. Simulations have been carried over HFSS v-15. The initially designed antenna resonates at 6.95 GHz and 7.2 GHz with respective reflection coefficients of −24 dB and −19.5 dB and a gain of 4.4 dBi and 8 dBi respectively. The bandwidth attained around 6.95 GHz is 160 MHz while that attained around 7.2 GHz is 160 MHz. The proposed structuremay be used for fixed satellite and mobile applications at 6.95 GHz and for fixed mobile and space research at 7.2 GHz. The modified structure has center frequencies of 5.56 GHz and 6.21 GHz that offer respective reflection coefficients of −21.1 dB and −21.2 dB with gain of 17.1 dBi and 11.6 dBi respectively. The attained bandwidths are 170 MHz and 290 MHz. This structure may be used for earth exploration satellites, mobile except aeronautical mobile, radio location, maritime radio navigation and space research at 5.56 GHz and for fixed satellite and mobile applications at 6.21 GHz.

Design of dual band microstrip key patch antenna for aeronautical mobile and broadcasting applications

This paper proposes the design of a similar key shaped patch antenna intended for aviation purpose and can also be used by International Broadcast stations. The design uses a FR4 epoxy substrate having a relative permittivity of 4.4 and a thickness of 1.6 mm. The numerous advantages offered by the utilized probe feeding technique includes simple fabrication and easy match, provides low spurious radiations and is simple to matching by controlling the position. The antenna offers a dual band resonance at 10.05 GHz and 21.68 GHz with respective peak gains of 34 dBi and 22.6 dBi offering bandwidths of 93 MHz and 3.47 GHz respectively. The 93 MHz can thus be used for broadcasting, standard time and frequency signal (10 MHz), space research and aeronautical mobile while the 3.47 GHz bandwidth on the other hand can be used for fixed mobile, amateur satellite, broadcasting, aeronautical mobile and maritime mobile.

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.