【正文】 MHz / Rx: 869894 MHz c) There is no 900 MHz GSM band 4. What does GSM stand for? a) General System for Mobile phones b) Greater Spectrum for Mobile phones c) Global System for Mobile Communication 5. What does POTS stand for (in munications)? a) Plain Old Telephone System b) PersOnal Telephony System c) Personal Orbital amp。 Terrestrial Satellite 6. Which of these pairs of materials in the triboelectric series have the greatest charge transfer potential? a) Silk amp。 Wool b) Rubber Balloon amp。 Celluloid c) Glass amp。 Hard Rubber 7. Along which side of rectangular waveguide is an E bend made? a) Longer side b) Shorter side c) Either side 8. What is the lowest modulation index at which an FM carrier is suppressed? a) b) ? () c) Only AM carriers can be suppressed 9. How much current is required through the human body to cause an onset to muscular paralysis during electrocution? a) Voltage is the culprit during electrocution, not current b) 21 mA c) 189。 amp 10. At what frequency is electromagic energy maximally absorbed due to oxygen in the atmosphere? a) 22 GHz b) Only water in the atmosphere absorbs electromagic energy c) 63 GHz RF QUIZ 5 This quiz tests your recognition of logos from panies* that are leaders in the RF industry. In some cases, part of the standard logo was cropped because it had the pany name included. Printing out this page to fill in the blanks is probably the best way to go about this puzzle. Hover your cursor over a logo to see a hint as to what type of product it manufactures. _______________ _______________ ? American Technical Ceramics (ATC) ? Piconics ? Channel Microwave ? Marki Microwave ? Scientific Atlanta ? Anadigics ? National Instruments _______________ _______________ _______________ _______________ _______________ _______________ _______________ _______________ ? Remec ? Analog Devices ? Datel ? Andrew Corporation ? Hittite Microwave ? Delta ? Power Cube ? Agilent Technologies ? Synergy Microwave ? Power One ? Cypress Semiconductor ? Connecticut Microwave ? Miteq ? Vicor ? National Semiconductor ? Maury Microwave ? Cinch ? Stanford Microdevices ? Huber+Suhner ? Johanson Dielectrics ? Sage Labs ? Ansoft ? Atlantic Microwave ? Intusoft ? Dallas Semiconductor ? Merrimac Industries ? Applied Radio Labs ? Texas Instruments ? Trilithic ? Rohde amp。 Schwarz ? Voltronics ? General Microwave ? Dielectric Laboratories ? RF Micro Devices ? GHz Technology _______________ _______________ _______________ _______________ _______________ _______________ _______________ _______________ _______________ _______________ _______________ _______________ _______________ _______________ _______________ _______________ _______________ _______________ _______________ _______________ _______________ _______________ _______________ _______________ _______________ _______________ _______________ _______________ _______________ _______________ _______________ _______________ RF Quiz 6: Wireless Communications Fundamentals 1. Which of the following WLAN standards is on a different frequency band than the others? a) b) c) d) 2. What does the term ruggedness refer to in wireless power amplifiers? a) Ability to withstand thermal stress b) Ability to withstand mechanical stress c) Ability to withstand load mismatch d) All the above 3. Which FCC regulation governs the unlicensed ISM band? a) Part 15 b) Chapter 11 c) d) Subsection 11 4. In which semiconductor technology are the majority of cellphone PAs manufactured? a) Si/SiCMOS b) GaN c) GaAs/InGaP d) SiGe 5. What is a major advantage of Low Temperature Cofired Ceramic (LTCC) substrates? a) Densely integrated passive ponents b) Better thermal dissipation c) Lower bill of materials d) All the above 6. Which phone standard supports the highest data rate? a) iDEN b) GPRS c) EDGE d) GSM 7. Which ponent is typically not part of a frontend module (FEM)? a) Power amplifier b) Filter c) Switch d) Controller 8. Which two systems are most likely to experience concurrent operation problems? a) WLAN + GSM b) Bluetooth + WLAN c) GSM + WCDMA d) Bluetooth + AMPS 9. An isolator is typically required at the output of the PA for which transmitter system a) EDGE b) Bluetooth c) GSM d) CDMA/WCDMA 10. What is the monly claimed nominal operational range for Bluetooth? a) 10 m b) ft c) ^15 ltyr d) All the above RF Quiz 7: Radar Fundamentals 1. What is a “radar mile?” a) 1 nautical mile b) 1 statute mile c) 181。s 2. Which best describes a bistatic radar? a) Fixed transmitter and fixed receiver at different locations b) Uses static electricity for both transmitted and received signals c) Only detects fixed (nonmoving) targets 3. What is a radar crosssection (RCS)? a) An engineering isometric drawing showing a slice through the equipment rack(s)? b) A target’s reflection coefficient relative to a perfectly reflecting spherical surface of 1 m^2 crosssection c) The plane through which a radar signal passes through a target 4. What are mon units of radar crosssection (RCS)? a) dBsm b) dBrcs c) dBm 5. Who is known as ”The Father of Radar?” a) Robert WatsonWatt b) Walter Eugene O39。Reilly c) Albert Einstein 6. Which flying (movement) condition will always result in a Doppler speed of 0 m/s? a) Pe