Mathematics
Heterodyne
100%
Radio Astronomy
92%
Integrated Circuits
76%
Microwave
69%
Chip
66%
Receiver
63%
Electron
53%
Testing
36%
Module
35%
Low Noise Amplifier
33%
Design
32%
Gallium Arsenide
28%
Diode
23%
Range of data
16%
Heterojunction
15%
Millimeter Wave
15%
Probe
10%
Buffer
10%
Voltage
9%
Prototype
9%
Figure
8%
Performance
5%
Concepts
4%
Physics & Astronomy
radio astronomy
69%
microwave circuits
68%
high electron mobility transistors
53%
integrated circuits
49%
cryogenics
49%
receivers
43%
modules
43%
chips
41%
amplifiers
27%
low noise
25%
frequency ranges
19%
gallium arsenides
19%
diodes
13%
voltage controlled oscillators
12%
junction transistors
11%
foundries
11%
bipolar transistors
9%
cryogenic temperature
9%
operating temperature
9%
millimeter waves
8%
buffers
7%
pumping
7%
prototypes
6%
probes
5%
room temperature
4%
performance
3%
Engineering & Materials Science
Radio astronomy
74%
High electron mobility transistors
60%
Monolithic microwave integrated circuits
59%
Cryogenics
55%
Testing
26%
Gallium arsenide
24%
Low noise amplifiers
20%
Diodes
16%
Intermediate frequency amplifiers
13%
Buffer amplifiers
13%
Bipolar transistors
10%
Foundries
9%
Noise figure
9%
Variable frequency oscillators
9%
Millimeter waves
8%
Temperature
6%
Chemical Compounds
Cryogenics
57%
Microwave
42%
Compound Mobility
39%
Foundry
12%
Buffer Solution
5%
Probe
5%
Environment
4%
Ambient Reaction Temperature
4%