RF Engineer

Radio-frequency engineering is a part of electrical engineering that deals with devices that are designed to operate in the radio frequency spectrum. These devices operate within the range of about 3 kHz up to 300 GHz.

RF engineering is incorporated into almost everything that transmits or receives a radio wave, which includes, but is not limited to, mobile phones, radios, Wi-Fi, and two-way radios.

RF engineering is a highly specialized field falling typically in one of two areas:

►Providing or controlling coverage with some kind of antenna/transmission system

►Generating or receiving signals to or from that transmission system to other communications electronics or controls.

If you do, describe budget and milestone reports you did, and strategies you developed, proposed, and implemented to achieve RF project milestones on time.

Describe anything related to communication with colleagues, clients, and management: presentations and reports, phone and online communication, client representation, coaching, etc.

If you did, describe how you chose candidates, and how you advertised and conducted the recruitment campaign. Talk about any presentations and manuals you might have made as part of coaching campaigns you participated in.

You can define these responsibilities, give examples of your experience performing them, and add information on your familiarity with relevant propagation tools, like Wizard, Planet, Tornado, etc.

Give specific examples from personal experience: antennae selection, tilting (mechanical or electrical), antenna clearance, power settings, etc.

Describe any jobs or assignments you were involved in with wireless telecommunication, with an emphasis on design, implementation, and optimization of networks. Describe responsibilities like initial system dimensioning and design, coverage and frequency planning, interference analysis, etc.

You can describe what you know about it, specific projects you have done, or relevant places you worked in - government, security, information technology industries, etc.

Begin with specific places you worked, like government agencies or manufacturing companies. You can then briefly add what exactly you did in RF engineering in each of those places.

A biological effect only becomes a health effect when it causes detectable impairment of health. According to the World Health Organization, health is "a state of complete physical, mental and social well-being and not merely the absence of disease or infirmity."

A biological effect occurs when a change can be measured in a biological system after an introduction of some type of stimulus (e.g. RF energy). The observation of a biological effect, in and of itself, does not necessarily suggest the existence of a health effect.

Health Canada's guideline document and most other RF exposure standards specify "time-averaged" maximum exposure limits. The purpose is to "smooth out" the short-term highs and lows of the exposure intensity to arrive at an "average" with which to compare to the limit. The averaging time is the time period over which exposure is averaged. The averaging time should not be interpreted as the maximum allowable exposure time.

As per Health guideline document, it is permissible to exceed the recommended exposure limits for short periods of time as long as the average exposure over the averaging time (0.1 hour or 6 minutes) does not exceed the limit.

Exposure to RF energy at levels below the regulatory limits is considered to be safe. These limits are based on the lowest exposure level at which the potential harmful effects to humans could occur. Safety factors are then incorporated to arrive at recommended exposure levels for protection of the general public.

To protect the general public, Health Canada maintains its guideline document entitled Limits of Human Exposure to Radio frequency Electromagnetic Energy in the Frequency Range from 3 kHz to 300 GHz, which is commonly referred to as Safety Code 6. This document has been adopted by many organizations across Canada and is referred to in several regulations. Industry Canada has adopted this guideline for the purpose of protecting the general public.

At radio communication and broadcasting installations, you will generally find radio transmitters and receivers, transmission lines and antennas, as well as their supporting structures. Radiocommunication and broadcasting transmitters are electronic devices that generate RF signals which carry the information intended for receivers. The signals are transmitted by antennas and then picked up by receivers (via receive antennas), which then extract the information carried, be it a cell phone conversation or a television program.

Probably the most important use for RF energy is in providing radio communication services to the public, industry and government. Radio and television broadcasting, cell phones, radio communications for emergency services, weather radar and satellite communications are examples of important applications. Non-communication uses of RF energy include industrial heating and microwave ovens. Some consumer uses of radio communication include baby monitors, garage door openers, cordless telephones, WI-FI, remote key-less car entry devices and various medical devices, just to name a few. As well, certain non-radio devices, including computers and other digital devices, also emit RF energy.

RF energy is one form of electromagnetic energy that is a component of the electromagnetic spectrum, which covers microwaves, visible light and X-rays, as well as many more kinds of energy emissions. RF energy, sometimes called "RF emissions," "RF waves" or "RF fields," is generated when a source current, such as a transmitter, is fed to an antenna. This current excites electrons within the antenna and the energy moves outward in the form of an electromagnetic wave.

An epidemiological study is the investigation of the occurrence and causes of health effects in human populations.