Question: What is not adjustable when it comes to a transformer?
Answer: turns ratio

Question: How many ohms are in are in a standard coax?
Answer: 50 or 75

Question: A general matching network needs a minimum of how many adjustments to correct all components of impedance?
Answer: two adjustments

Question: What is included between the transmission line and the antenna element?
Answer: balun

Question: A balun should be integrated into what?
Answer: matching network

Question: What antenna's are nonresonant?
Answer: traveling wave antennas

Question: How long are the wire antenna's that the voltage and current waves travel in the same direction?
Answer: one direction

Question: What are undirectional traveling wave directions terminated by?
Answer: resistor

Question: What antenna does not have linear polarization?
Answer: helical antenna

Question: What is the resistor equal to?
Answer: antenna's characteristic resistance

Question: What is the radiation patter influenced by?
Answer: dielectric constant

Question: The ground is important for what antenna?
Answer: terrestrial antenna

Question: Whats another name for the ground?
Answer: artificial ground plane

Question: What does the artificial ground plane do for the antenna current?
Answer: return connection

Question: What is the net quality of the ground dependent of?
Answer: topography

Question: What is the reason for the receiver seeing both the ral antenna and image of the antenna?
Answer: reflection

Question: What frequencies is associated with shorter wavelengths?
Answer: higher frequencies

Question: When will reflections not be coherent?
Answer: ground has irregularities

Question: What is the refractive index of the ground?
Answer: n=2

Question: When is polarized radiation reversed?
Answer: reflection

Question: What is the refractive index of air?
Answer: n=1

Question: Besides a ground, what has these phases apply well to?
Answer: electrical conductor

Question: Who proposed this theory?
Answer: Fresnel coefficients

Question: Is the ground has a great conductor, how much of the wave will be reflected?
Answer: 180° out of phase

Question: what is reflected and transmitted into the ground when a plane surface is struck?
Answer: electromagnetic wave

Question: What depends on the polarization and waves angle?
Answer: power remaining

Question: What is the portion of something that is reached by the radio transmission called?
Answer: aperture

Question: What effects the function of signals received by an antenna?
Answer: direction

Question: What is a measure of the power of an antenna?
Answer: microvolts

Question: How much power will be delivered to the reciever if the antenna has an effective area of 12 m/2?
Answer: 12 pW of RF power

Question: The properties of a usable radio frequency can be called its?
Answer: Q

Question: What is a measure of the comparison between reactance and resistance?
Answer: Q

Question: What is the largest Q that could be achieved with a slimmer band antenna?
Answer: 15

Question: What type of element would be used to encounter less reactance?
Answer: thick

Question: What can be added to allow for an antenna shorter than the needed height to produce desired results?
Answer: loading coil

Question: How would the resistive impedance from this scenario compare to if the antenna was the proper height?
Answer: lower

Question: The coil has lengthed the antenna to reach how much length electrically?
Answer: 2.5 meters

Question: What is the major thing that sets the size of antennas at lower frequencies?
Answer: reactance

Question: How big would an antenna be used to with with one m wavelengths?
Answer: 50 cm

Question: How could the rection of output be adressed by?
Answer: changing the matching system

Question:  What unit is used to measure current?
Answer: ampere

Question: What effect occurs when the signal is reflected back into the antenna?
Answer: reducing output

Question: What sort of changes in material would a current reflect?
Answer: electrical

Question:  What must match between the transmission line and elements?
Answer: impedance

Question: What technique is used to prevent unintentional decrease in signal?
Answer: Impedance matching

Question: How is this process usually used for transmission lines and antennas?
Answer: balun

Question: What is used to allow one to control the function of wave fronts moving through an antenna?
Answer: selectively delay

Question: What changes the structuak traits of a wave on either side?
Answer: refractor

Question: What is the main purpose of a refractor?
Answer: spatial characteristics

Question: A refractor can be compared to what type of viewing?
Answer: optical lens

Question: What can receive a stron signal by transmitting an original wave?
Answer: actual antenna

Question: Where will the additional current be induced?
Answer: antenna element

Question: What is altered because of the proximity to the ground?
Answer: antenna's impedance

Question: what happens to the reflected wave which allows the antenna to reach its asympotic feedpoint impedance?
Answer: reduced power

Question: What is between recieving and transmitting antenna's?
Answer: horizontal propagation

Question: When is the emission at maximized recieved signal?
Answer: polarized vertically

Question: Where is the radiation patterns in the vertical plane shown?
Answer: image at right

Question: What is also increased along with the antenna's height?
Answer: lobes

Question: What is another name for classical television transmissions?
Answer: analog

Question: Buildings can create ghost images because of what?
Answer: multipath propagation

Question: When is ghosting reduced?
Answer: horizontal polarization

Question: What cause less problems in digital terrestrial television?
Answer: Vertically polarized analog television

Question: Where are the indiviual array elements known?
Answer: antenna arrays

Question: What induces a feedpoint to antennas nearby?
Answer: Current circulating

Question: What are the mathmatic useful towards?
Answer: electrical behaviour

Question: What cause mutual interactions between the elements electric and magnetic fields?
Answer: proximity

Question: a antenna element not connected to anything is circuited how?
Answer: open circuited

Question: When is the element not allowed voltage?
Answer: short circuited

Question: What element absorbs and reradiate RF-energy?
Answer: Parasitic

Question: What antenna can the solid rod be viewed as a dipole antenna?
Answer: Yagi-Uda

Question: Where can this solid rod be viewed?
Answer: feedpoint

Question: What type of programmin relies on vertical polarization?
Answer: broadcasting

Question: If you were to position your receiver closer to the ground what might be a negative of this placement?
Answer: cancellation

Question: What is one use that would require an antenna to receive signals in various ways at once?
Answer: mobile phones

Question: If you were to develop a signal to be used with mobile phones what would be an effective antenna type?
Answer: circular polarization.

Question: What would the antenna you are using take advantage of to allow it to work in multiple locations?
Answer: mixed polarization

Question: What type of antenna can be formed by a circular segment of wire?
Answer: Loop antennas

Question: What is a loop antenna compared with to determine its beahvior?
Answer: circumference of a wavelength

Question: If you needed to place an antenna somewhere with a large amount of interference, which type would be best?
Answer: loops small

Question: Why would this type be good for receiving but not transmtting?
Answer: low radiation resistance

Question: What else would be an effective application of this antenna type?
Answer: direction finding

Question: Are essential properties of an antenna changed based on what fungtion they are performing
Answer: the same