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RF & Microwave Engineering Crossword Puzzle
September 27, 2015
This week's crossword puzzle, as with all RF Cafe puzzles, uses only words pertaining to engineering, science, mathematics, mechanics, chemistry, astronomy, etc. You will never find a reference to some obscure geological feature or city, or be asked to recall the name of some numbnut movie star or fashion designer. You will, however, need to know the name of a famous RF filter design software author. Enjoy!
Reproduction of this puzzle without the express permission of RF Cafe is prohibited.
acr. = acronym, abbr. = abbreviation,
pl. = plural, wds. = words
| ACROSS | DOWN |
| 1. _______ ____ - popular author on RF filter design (first & last name) 9. Chemical symbol for francium 10. Infrared (abbr.) 11. Unit of inductance (abbr.) 12. Special diode type that can be switched (abbr.) 14. Component supplier 16. Mass unit (abbr., pl.) 18. Nearest and furthest points to the center of gravitational attraction for a body in orbit (pl.) 21. PC follower 23. Word used in describing 2-D and 3-D object dimensions; i.e., 10 mm __ 25 mm 24. Cooling devices 25. Image storage format 28. Type of reconfigurable memory (abbr.) 30. Key feature in a high level overvoltage protection device 31. Antenna (abbr.) 33. Effective frontal area presented to a microwave interrogation system (abbr.) 35. Point that is the same distance from every point on the circumference of a circle (British spelling) 37. Filter type that blocks frequencies in a specified band (abbr.) 38. Encased in a protective covering 40. Amateur radio enthusiast 41. A common battery cell size 43. Its chemical symbol is Fe 44. Type of flip-flop 45. Trigonometric function equal to the ratio between the side adjacent to a given angle, and the hypotenuse 46. Miniature threaded RF connector 49. Voltage-current phase mnemonic 50. Modulation technique that varies the width of pulses in a train (abbr.) 52. The gaseous state of water 55. Precipitates 57. Islands On The Air (Ham term) 58. BS__ - the degree held by many RF Cafe visitors 60. PC follower 61. Majority carriers in p-type material 62. Direct Memory Access (abbr.) 64. Unit of conductance 66. CDMA Development Group (abbr.) 68. Chemical symbol for cobalt 69. Chemical symbol for lanthanum 70. Chemical symbol for beryllium 71. Frequency-selective with high rate of out-of-band attenuation (2 wds.) |
1. Web's most popular radio frequency engineering site (2 ltrs. + 1 wd.) 2. Chemical symbol for argon 3. Number by which another number is divided 4. Amateur Radio Emergency Service (abbr.) 5. Mr. Boltzmann's first name 6. Greek letter 7. Chemical symbol for einsteinium 8. Abbreviation for acknowledge (also a common word used by Bill the Cat) 13. Computer monitor cable type (abbr.) 15. Increased voltage linearly 17. Overall functional units 19. International phonetic alphabet letter "P" 20. Signal-to-noise ratio (abbr.) 22. Chemical symbol for tantalum 26. Radio navigation systems 27. Radio signal route (pl.) 29. Unit of frequency (archaic, abbr.) 32. Gun safety and education organization (abbr.) 34. Threaded fastener (pl.) 36. Like a crystal 37. Beginners' All-purpose Symbolic Instruction Code 39. Local Oscillator (abbr.) 42. Online service (abbr.) 43. Opposites of outputs 44. A number that can be expressed as a/b, where a, b are integers 47. 1E6 nanoseconds 48. The "R" in BER 51. 'Shooting star' 53. End of Life (abbr.) 54. Network controller 56. A common battery cell size 59. Science of assuring operation amid dense EM background noise (abbr.) 61. Slang for helicopter 63. Type of data conversion device (abbr.) 65. Current-voltage phase mnemonic 67. Chemical symbol for gallium 70. Chemical symbol for beryllium |
See solution below
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About RF Cafe RF Cafe began life in 1996 as "RF Tools" in an AOL screen name web space totaling 2 MB. Its primary purpose was to provide me with ready access to commonly needed formulas and reference material while performing my work as an RF system and circuit design engineer. The World Wide Web (Internet) was largely an unknown entity at the time and bandwidth was a scarce commodity. Dial-up modems blazed along at 14.4 kbps while tying up your telephone line, and a lady's voice announced "You've Got Mail" when a new message arrived... |
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