Question 1

Give two examples of two-dimensional antennas. Describe them.

Accepted Answer

Examples include patch and satellite dis

Question 2

Describe the "tens and threes of RF mathematics".

Accepted Answer

To calculate gain, you need to remember:

Question 3

MATCHING
-a theoretically perfect sphere that radiates power equally in all directions

Accepted Answer

A) antenna pattern 
B) dB isotropic 
C) dBm 
D) dipole 
E) free space loss
F)ground-plane
G)isotropic radiator
H)passive antenna
I)patch antenna
J)smart antenna 
A) antenna pattern 
B) dB isotropic 
C) dBm 
D) dipole 
E) free space loss
F)ground-plane
G)isotropic radiator
H)passive antenna
I)patch antenna
J)smart antenna

Question 4

Which of the following refers to the gain an antenna has over a dipole antenna at the same frequency?

Accepted Answer

A)  dBm 
B)  dBd 
C)  dBi 
D)  dBg 
A)  dBm 
B)  dBd 
C)  dBi 
D)  dBg

Question 5

Which of the following is true about antennas?

Accepted Answer

A)  the size is proportional to the wavelength 
B)  lower frequency signals require larger antennas 
C)  most are active devices 
D)  omnidirectional types provide the best directional gain 
A)  the size is proportional to the wavelength 
B)  lower frequency signals require larger antennas 
C)  most are active devices 
D)  omnidirectional types provide the best directional gain

Question 6

Decibels are an absolute measurement of signal strength, making it simpler to calculate gain or loss.

Accepted Answer

A) True 
 B)False

Question 7

MATCHING
-a new type of antenna that uses a signal processor and an array of narrow beam elements

Accepted Answer

A) antenna pattern 
B) dB isotropic 
C) dBm 
D) dipole 
E) free space loss
F)ground-plane
G)isotropic radiator
H)passive antenna
I)patch antenna
J)smart antenna 
A) antenna pattern 
B) dB isotropic 
C) dBm 
D) dipole 
E) free space loss
F)ground-plane
G)isotropic radiator
H)passive antenna
I)patch antenna
J)smart antenna

Question 8

______________ is the effect of an amplifier boosting the power of a signal.

Accepted Answer

The answer of ______________ is the effect of an amplifier...

Question 9

MATCHING
-a graphic that shows how a signal radiates out of an antenna

Accepted Answer

A) antenna pattern 
B) dB isotropic 
C) dBm 
D) dipole 
E) free space loss
F)ground-plane
G)isotropic radiator
H)passive antenna
I)patch antenna
J)smart antenna 
A) antenna pattern 
B) dB isotropic 
C) dBm 
D) dipole 
E) free space loss
F)ground-plane
G)isotropic radiator
H)passive antenna
I)patch antenna
J)smart antenna

Question 10

Point-to-point wireless links are best served by using omnidirectional antennas.

Accepted Answer

A) True 
 B)False

Question 11

Which type of antenna is two-dimensional, is common in telephone networks, and is used to transmit high-power microwave signals between towers?

Accepted Answer

A)  patch 
B)  satellite dish 
C)  horn 
D)  dipole 
A)  patch 
B)  satellite dish 
C)  horn 
D)  dipole

Question 12

Which of the following is true about omnidirectional antennas?

Accepted Answer

A)  they work best in point-to-point links 
B)  they cannot be used in 802.11 applications 
C)  longer ones usually have higher gain 
D)  they emit a signal in three dimensions 
A)  they work best in point-to-point links 
B)  they cannot be used in 802.11 applications 
C)  longer ones usually have higher gain 
D)  they emit a signal in three dimensions

Question 13

MATCHING
-a metal disc or two straight wires assembled at 90 degrees, used to provide
a reflection point for monopole antennas

Accepted Answer

A) antenna pattern 
B) dB isotropic 
C) dBm 
D) dipole 
E) free space loss
F)ground-plane
G)isotropic radiator
H)passive antenna
I)patch antenna
J)smart antenna 
A) antenna pattern 
B) dB isotropic 
C) dBm 
D) dipole 
E) free space loss
F)ground-plane
G)isotropic radiator
H)passive antenna
I)patch antenna
J)smart antenna

Question 14

MATCHING
-a relative way to indicate an absolute power level in the linear watt scale

Accepted Answer

A) antenna pattern 
B) dB isotropic 
C) dBm 
D) dipole 
E) free space loss
F)ground-plane
G)isotropic radiator
H)passive antenna
I)patch antenna
J)smart antenna 
A) antenna pattern 
B) dB isotropic 
C) dBm 
D) dipole 
E) free space loss
F)ground-plane
G)isotropic radiator
H)passive antenna
I)patch antenna
J)smart antenna

Question 15

Cables and connectors offer resistance to the flow of electricity, increasing the power of a signal.

Accepted Answer

A) True 
 B)False

Question 16

What type of wave propagation do RF signals transmitted at 50 MHz have?

Accepted Answer

A)  ground waves 
B)  sky waves 
C)  line-of-sight waves 
D)  atmospheric waves 
A)  ground waves 
B)  sky waves 
C)  line-of-sight waves 
D)  atmospheric waves

Question 17

What is the maximum percent of the Fresnel zone that can be blocked by obstructions in a point-to-point link?

Accepted Answer

A)  20% 
B)  60% 
C)  40% 
D)  10% 
A)  20% 
B)  60% 
C)  40% 
D)  10%

Question 18

Which value indicates the signal being measured is twice the power?

Accepted Answer

A)  +3 dB 
B)  -5 dB 
C)  +5 mW 
D)  -3 mW 
A)  +3 dB 
B)  -5 dB 
C)  +5 mW 
D)  -3 mW

Question 19

When considering antenna size, lower frequencies require ___________ antennas.

Accepted Answer

The answer of When considering antenna size, lower frequencies require...

Question 20

MATCHING
-a semi-directional antenna that emits a wide horizontal beam and an even
wider vertical beam

Accepted Answer

A) antenna pattern 
B) dB isotropic 
C) dBm 
D) dipole 
E) free space loss
F)ground-plane
G)isotropic radiator
H)passive antenna
I)patch antenna
J)smart antenna 
A) antenna pattern 
B) dB isotropic 
C) dBm 
D) dipole 
E) free space loss
F)ground-plane
G)isotropic radiator
H)passive antenna
I)patch antenna
J)smart antenna

Give two examples of two-dimensional antennas. Describe them.

Describe the "tens and threes of RF mathematics".

MATCHING -a theoretically perfect sphere that radiates power equally in all directions

Which of the following refers to the gain an antenna has over a dipole antenna at the same frequency?

Which of the following is true about antennas?

Decibels are an absolute measurement of signal strength, making it simpler to calculate gain or loss.

MATCHING -a new type of antenna that uses a signal processor and an array of narrow beam elements

______________ is the effect of an amplifier boosting the power of a signal.

MATCHING -a graphic that shows how a signal radiates out of an antenna

Point-to-point wireless links are best served by using omnidirectional antennas.

Which type of antenna is two-dimensional, is common in telephone networks, and is used to transmit high-power microwave signals between towers?

Which of the following is true about omnidirectional antennas?

MATCHING -a metal disc or two straight wires assembled at 90 degrees, used to provide a reflection point for monopole antennas

MATCHING -a relative way to indicate an absolute power level in the linear watt scale

Cables and connectors offer resistance to the flow of electricity, increasing the power of a signal.

What type of wave propagation do RF signals transmitted at 50 MHz have?

What is the maximum percent of the Fresnel zone that can be blocked by obstructions in a point-to-point link?

Which value indicates the signal being measured is twice the power?

When considering antenna size, lower frequencies require ___________ antennas.

MATCHING -a semi-directional antenna that emits a wide horizontal beam and an even wider vertical beam

Introduction to Wireless Communications

Wireless Data Transmission

Radio Frequency Communications

Wireless Personal Area Networks

High-Rate Wireless Personal Area Networks

Low-Speed Wireless Local Area Networks

High-Speed Wlans and Wlan Security

Wireless Metropolitan Area Networks

Wireless Wide Area Networks

Radio Frequency Identification and Near-Field Communication

Wireless Communications in Business

Filters

Exam 4: How Antennas Work

Give two examples of two-dimensional antennas. Describe them.

Describe the "tens and threes of RF mathematics".

MATCHING -a theoretically perfect sphere that radiates power equally in all directions

Which of the following refers to the gain an antenna has over a dipole antenna at the same frequency?

Which of the following is true about antennas?

Decibels are an absolute measurement of signal strength, making it simpler to calculate gain or loss.

MATCHING -a new type of antenna that uses a signal processor and an array of narrow beam elements

______________ is the effect of an amplifier boosting the power of a signal.

MATCHING -a graphic that shows how a signal radiates out of an antenna

Point-to-point wireless links are best served by using omnidirectional antennas.

Which type of antenna is two-dimensional, is common in telephone networks, and is used to transmit high-power microwave signals between towers?

Which of the following is true about omnidirectional antennas?

MATCHING -a metal disc or two straight wires assembled at 90 degrees, used to provide a reflection point for monopole antennas

MATCHING -a relative way to indicate an absolute power level in the linear watt scale

Cables and connectors offer resistance to the flow of electricity, increasing the power of a signal.

What type of wave propagation do RF signals transmitted at 50 MHz have?

What is the maximum percent of the Fresnel zone that can be blocked by obstructions in a point-to-point link?

Which value indicates the signal being measured is twice the power?

When considering antenna size, lower frequencies require ___________ antennas.

MATCHING -a semi-directional antenna that emits a wide horizontal beam and an even wider vertical beam

Introduction to Wireless Communications

Wireless Data Transmission

Radio Frequency Communications

Wireless Personal Area Networks

High-Rate Wireless Personal Area Networks

Low-Speed Wireless Local Area Networks

High-Speed Wlans and Wlan Security

Wireless Metropolitan Area Networks

Wireless Wide Area Networks

Radio Frequency Identification and Near-Field Communication

Wireless Communications in Business

Filters