Varactor-tuned, active microwave band-pass filter

Engineering & Materials Science

• Microwave filters 100%
• Varactors 88%
• Bandpass filters 73%
• Poles 61%
• Tuning 27%
• Negative resistance 25%
• Active filters 21%
• Insertion losses 18%
• Diodes 16%
• Microwaves 15%
• Bandwidth 11%
• Networks (circuits) 9%

Physics & Astronomy

• varactor diodes 93%
• bandpass filters 80%
• poles 63%
• filters 51%
• microwaves 48%
• tuning 27%
• insertion loss 18%
• Q factors 15%
• field effect transistors 14%
• bandwidth 12%