Question: Besides low gain antennas, what is also used as driven elements in complicated higher gain types of antennas?
Answer: dipoles

Question: How much gain does a half-wave dipole have?
Answer: 2.15 dBi

Question: What must be true of the antenna and transmission medium for the repiprocity rule to apply ?
Answer: linear and reciprocal

Question: What is one material that does not have this quality?
Answer: ferrite

Question: How can the lack of this quality be used in an everyday way?
Answer: radar

Question: What is called when the direction of the elctrical current does not make a difference to the current?
Answer: Reciprocal

Question: How could one deide what type of antenna is nedded for a project?
Answer: performance measures

Question: What would most likely be the main concern in making this decision?
Answer: directional characteristics

Question: How would you distribute power to allow for a greater gain?
Answer: horizontal directions

Question: What is often the most imprtant crediting factor of antennas?
Answer: efficiency

Question: Which antenna type would be best for a project requiring a specific frequency?
Answer: Resonant antennas

Question: How could an antenna be made to coordinate with the needed frequency?
Answer: built or ordered

Question: What factor would result in a desired feedback independence?
Answer: particular antenna design

Question: If you were unable to choose the antenna you wanted how could you still achieve this result?
Answer: matching network

Question: What is the essential difference in radio waves transmitted by an antenna?
Answer: polarization

Question: How can this be adjusted more easily than changing antenna types?
Answer: tilting the axis

Question: When might the size of an antenna cause an issue?
Answer: at lower frequencies

Question: What size antenna would not be good when the antenna needs to be directional?
Answer: small

Question: There is a relationship between the size of the antenna and the size of the wavelength with what antenna type?
Answer: Highly directional

Question: What particle's migration does the resonance principle rely on?
Answer: electrons

Question: What is the basis for the way most antennas are developed?
Answer: resonance principle

Question: What type of surface is formed by the tip of a conductor?
Answer: reflective

Question: How would you place the conductor in relation to the signal you wished to obtain?
Answer: perpendicular

Question: What part of the radio signal creates voltage?
Answer: electrical component

Question: What would the electric current always gravitate to?
Answer: instantaneous field

Question: What is the outcome when a curren is reflected>
Answer: 180 degree change in phase

Question: What amount of phase change would return a signal to its originial state?
Answer: 360 degree

Question: What is the most popular antenna type?
Answer: half-wave dipole

Question: What is the current usually beng put into it or pulled out of?
Answer: transmission line

Question: Elements in a half wave dipole and on an identical axis are said to be what?
Answer: collinear

Question: What antenna type is a portion of the half wave dipole?
Answer: Monopoles

Question: What popular type combines more that one antenna?
Answer: folded dipole

Question: What frequency are antennas normally designed to be?
Answer: f0

Question: What can be added to f0 to create a standing wave pattern?
Answer: 3f0

Question: What multiple is essential for wavelengths?
Answer: 1⁄4

Question: How are waves which are used in the ways discussed controlled?
Answer: harmonically

Question: How do quarter wave elements act in relation to a series relevant electrical element?
Answer: imitate

Question: What frequency develops a current peak?
Answer: resonant frequency

Question: How would you describe a current that has maximum efficiency?
Answer: minimum reactance

Question: What could be the best possible output versus input ratio?
Answer: lossless

Question: For use with more than one channel changes are made to increase what property?
Answer: impedance matching

Question: What could be coupled with an antenna to form pure resistance?
Answer: inductance

Question: What element would this pure resistance be coupled with?
Answer: transmission line

Question: What phrase describes the process of purposely using a lower standing antenna at a less than peak frequency?
Answer: electrical lengthening

Question:  If your were unable to match the source frequency with the design frequency of the antenna what could you use?
Answer: resonant multiples

Question: What is the most common application of resonant antennas?
Answer: single target signal

Question: What antenna setup type is generally used for TV viewing?
Answer: resonant

Question: For use with more than one channel changes are made to increase what property?
Answer: bandwidth

Question: What accounts for the geometry involved in the use of an antenna?
Answer: inverse square law

Question:  How is the compactness of the signal measured?
Answer: Watts per square metre

Question: What type of project would call for more than one element used together?
Answer: higher performance

Question: What is a half wave dipole need to be coupled with in most instances?
Answer: feed point

Question: What part of the current is usually strongest?
Answer: center

Question: What does this result in?
Answer: standing wave pattern

Question: Element used to provide support to the original signal are called?
Answer: passive elements

Question: What can take advantage of these elements to add more gain?
Answer: Yagi-Uda array

Question: Does this device improve the operation of the antenna?
Answer: does not contribute

Question: What is the name for passive elements nearer to the source of the signal?
Answer: directors

Question: Adding more elements to a Yagi-Uda would have what effect?
Answer: increasingly directional

Question: What can be paired with transmission lines to create phases that would support output?
Answer: active elements

Question: What is the most common element used to create a single in phase signal?
Answer: half-wave dipoles

Question: What must be precise in order to create this signal at output?
Answer: phase lengths

Question: What is a more complicated occurrence of the single in-phase producing antenna?
Answer: log-periodic

Question: If you wanted to somehow clone the original signal you could use?
Answer: extended conductive surface

Question: What effect would the use of a reflector have on a signal?
Answer: increase

Question: What allowance can be made for gaps without loss of performance?
Answer: less than 1⁄10

Question: What is the most recognized type of an antenna that has its basis in reflection?
Answer: parabolic reflector

Question: What magnifies the small radiation resistance of a loop?
Answer: a capacitor at the frequency of operation

Question: What is resonated by a capacitor along with the receiver tuning that maintains resonance over the AM broadcast band?
Answer: small ferrite loop antenna

Question: What is used in most AM broadcaster receivers?
Answer: loop

Question: When using a small loop antenna at a low frequency, what may occur?
Answer: impedance matching

Question: What is left after antenna tuning?
Answer: resistive impedance

Question: Where does cancellation of any reactance seen?
Answer: antenna terminals

Question: What can be used to cancel a inductibe reactance or residual capacitative?
Answer: parallel capacitance

Question: What is an antenna designed to have?
Answer: purely resistive feedpoint

Question: What type of antenna has impedance at a specific frequency?
Answer: resonant

Question: What term can be used to refer to the usable spectrum of an antennas frequency?
Answer: bandwidth

Question: What causes the frequencies outside of the bandwidth to be unusable?
Answer: impedance match

Question: What is lessened by the Yagi-Uda design?
Answer: directivity