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

RF & Microwave Engineering Crossword Puzzle for September 27, 2015 - RF Cafe

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

2015 Crosswords Archive

Take a well-deserved break and try your hand at some of these goodies. Every word in the RF Cafe crossword puzzles is specifically related to engineering, mathematics, and science. There are no generic backfill words like many other puzzles give you, so you'll never see a clue asking for the name of a movie star or a mountain on the Russia-China border.

All of these crossword puzzles were created using the fabulous Crossword Express (now called "Magnum Opus") software.

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RF & Microwave Engineering Crossword PuzzleSeptember 27, 2015

RF & Microwave Engineering Crossword Puzzle
September 27, 2015