Miniature ultra-wideband active receiving antenna
US6917336B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 3, 2002 |
| Grant date | Jul 12, 2005 |
| Priority date | — |
| Expiry date | Jan 19, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N21/414
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
According to some aspects of this invention, a compact, broadband active receiving antenna uses one or more high transconductance transistors such as Field Effect Transistor(s) paired with another Transistor and arranged in a Cascode amplifier configuration. Some embodiments involve a single high transconductance transistor arranged with a high efficiency transformer in a nondissipative feedback loop to improve linearity and dynamic range. The devices have a high input resistance, low input capacitance, low noise and a very high second and third order Intercept Point. Since the gain is primarily a function of the amplifying electronics, it is not necessary to increase the directivity of the antenna to achieve higher gain.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.