Contains the full lesson in 2 formats A4 and A3 along with a supporting toolkit, including a powerpoint slide deck and teachers’ notes.
Mobile communications depend fundamentally on sending and receiving radio transmissions. Like X-rays, ultraviolet and visible light, radio waves are part of the electromagnetic spectrum (EMS). The energy of electromagnetic waves is proportional to their frequency and inversely proportional to their wavelength. Longer waves have lower energy and shorter waves have higher energy. The energy of radio waves and microwaves is much lower than that of visible light.
The radio spectrum is not unlimited. Different countries and regions around the world regulate which parts of the radio spectrum may be used and for what purpose. ComReg (The Commission for Communications Regulation), which is the regulatory authority in Ireland, is a member of the European Conference of Postal and Telecommunications Administrations (CEPT) which regulates telecommunications standards in Europe (including the EU). Regulation is needed in order to:
• promote efficient use of the available RF spectrum
• facilitate provision of services to consumers (radio, TV, mobile phone, broadband)
• encourage innovation
• limit interference between services.
ComReg can license or auction segments of the radio frequency (RF) spectrum to service providers for use in limited areas and for a specific number of years.
Its remit covers all kinds of transmission networks including: