Antenna Fundamentals

Group A : Industry Case: Mobile Communication – Telecom Sector (5G) Scenario: A telecom service provider plans to deploy a small-cell 5G base station in an urban area. Two antennas with identical input power but different radiation characteristics are proposed. Tasks: Compare an isotropic radiator and a practical directional antenna for the given scenario. Analyze the influence of radiation intensity, gain, directivity, beamwidth, and front-to-back ratio (FBR). Recommend the most suitable antenna with proper technical justification. Group B : Scenario: Preparation of structured study material to reduce conceptual errors in antenna parameter questions. Tasks: Develop a concept map linking radiation intensity, gain, directivity, radiation resistance, and antenna impedance. Solve TWO GATE-level numerical problems related to antenna parameters. Identify common conceptual mistakes made in competitive examinations. Group C : Industry Case: Satellite Communication Systems Scenario: Estimation of received signal power for a satellite link under free-space conditions. Tasks: Apply Friis transmission equation to estimate received power. Analyze the effect of antenna polarization mismatch on link performance. Suggest methods to improve received power without increasing transmit power. Group D : Industry Case: RFID and IoT Applications Scenario: An RFID system deployed in a warehouse environment faces range and orientation issues. Tasks: Explain the role of antenna polarization, bandwidth, and effective length in RFID systems. Compare linearly and circularly polarized antennas for RFID readers. Design a technical poster illustrating radiation pattern and polarization effects.