Fully integrated LNA & antenna for ultra-low noise figure receivers
| Autor: | Barend Visser, Paulus Kruger, D.S. Prinsloo |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Floating ground
Computer science business.industry Amplifier Transistor Astrophysics::Instrumentation and Methods for Astrophysics Electrical engineering Impedance matching 020206 networking & telecommunications 02 engineering and technology Noise figure 01 natural sciences law.invention law Balun 0103 physical sciences 0202 electrical engineering electronic engineering information engineering Antenna (radio) business 010303 astronomy & astrophysics Sensitivity (electronics) |
| Zdroj: | 2017 47th European Microwave Conference (EuMC). |
| DOI: | 10.23919/eumc.2017.8230798 |
| Popis: | A simple, inexpensive, fully integrated low-noise amplifier and antenna for the Square Kilometer Array (SKA) Mid-Frequency Aperture Array (MFAA) is presented which achieves a receiver noise figure of about 0.4 dB over more than an octave bandwidth. A novel design technique was used which makes it easy to match the antenna directly to the first amplification transistors, without using an impedance matching circuit, thereby achieving a noise figure close to the minimum noise figure of the transistors used. The receiver also demonstrates how a single-ended amplifier with a floating ground can be used for a differential, planar antenna, by using a balun on the output of the amplifier. These receivers can be used stand-alone in a sparce, irregular array or closely packed in a dense, regular array or in a mixed system, making it possible to investigate various array configurations for the SKA MFAA. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|