The Puzzler - November 2010

Passive and Control Components

Across

1 GaAs PHEMT FET type that allows for digital logic integration on MMICs (2 words)
5 Currently the most widely used device technology for RF switches (2 words)
the current entering a port results in a decreased voltage
across the same port (2 words)
7 Type of transformer that can convert signals that are balanced to signals that are unbalanced and vice versa
10 Patented specialty SOI process that uses a very thin layer of Si on a sapphire substrate
GaAs substrate
13 Passive device used to couple a specific proportion of the power travelling in one transmission line out through another port
14 =-20log|Γ| dB (2 words)
15 Magnitude of a signal that gets coupled across an open circuit
16 Short for silicon-on-sapphire
19 Ron·Coff product is used as a figure of merit for which device type?
21 Passive device that selects only the desired band of frequencies (3 words)
(2 words)
23 Passive device that allows bi-directional communication over a single channel
24

Down

2 Nano-electromechanical systems
3 Three-port passive device used to control the direction of signal flow in a circuit
4 Passive device made from two metal plates separated by an insulator
6 Micro-electromechanical systems
8 SOI (3 words)
9 Solid-state switch type in use since the 1950s and still very well suited for high power, high frequency applications (2 words)
11 Device that transfers electrical energy from one circuit to another through inductively coupled conductors
12 Newer compound semiconductor switch technology that could compete with PIN diodes for high power applications (2 words)
17 Switch technology that switches states quickly but typically suffers from gate lag
18 Loss of signal power resulting from the insertion of a device in a transmission line (2 words)
20 Nonlinear device that accepts as its input two different frequencies and presents at its output a mixture of signals
22 Passive device that implements frequency domain multiplexing