Communications Systems Chapter 9 Test

Communications Systems Chapter 9 Test - Communications...

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Communications Systems Chapter 9 Test 1. Describe the difference between the antenna near field and far field: 2. Describe the relationship of the intensity of the antenna magnetic and electric fields: 3. The direction of the ____________________________ field determines the polarization of the antenna. 4. What is the wavelength in feet of an antenna transmitting at 156 MHz? 5. What is the 1/4 wavelength of an antenna transmitting at 100 KHz? 6. A doubling of power results in a __________ dB antenna gain. 7. A common directional TV antenna is known as a ___________________________, named after its inventor. 8. The extra elements for the antenna in question 7 are known as ____________________ elements because they are not directly connected to the feed line. 9. The measure of the intensity of a signal at a particular location from the antenna is known as __________________________ __________________________ . 10-11. Typical transmission line and antenna impedances are ___________ and ___________ ohms.
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This note was uploaded on 07/10/2011 for the course ECON 101 taught by Professor Tuner during the Spring '11 term at Solano Community College.

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Communications Systems Chapter 9 Test - Communications...

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