semiconductors - What is silicon germanium (SiGe)? - Electrical ...
Sep 25, 2013 · SiGe is a semiconductor alloy, meaning a mixture of two elements, silicon and germanium. Since 2000 or so, SiGe has become widely used to enhance the performance of ICs of …
transistors - Large SiGe ASICs for digital logic - Electrical ...
Aug 26, 2018 · Are SiGe NPN transistors used to build digital gates? Yes. This is done either for very simple, small logic, when you might need a few hundred control gates in a power amplifier or similar …
Why are microprocessors made using silicon and not germanium?
Mar 16, 2024 · I heard that microprocessors are usually made using silicon, yet germanium has a better conductive state. Why isn't germanium not chosen instead, taking to account that better conductors …
amplifier - SiGe/GaAs RF MMIC as photodiode preamp - Electrical ...
Nov 30, 2015 · Could you suggest if it's possible to effectively use SiGe/GaAs RF MMIC (which have 50 Ohm input impedance) as first stage of photodiode amplifier? The idea is to reverse bias diode from …
How do I get a bigger sheet size in Altium, updating current one?
Jun 28, 2023 · I have a schematic sheet and I need more free space on it. The actual size is A4. I have right-clicked in the sheet, went to Preferences and changed the Sheet Size from A4 to A3 but that …
Why does MOSFET pinch-off occur? - Electrical Engineering Stack …
This question is about enhanced n-type MOSFETs. From what I understand, an inversion layer is formed underneath the insulating layer below the gate of the MOSFET when a voltage is applied to …
What is the standard procedure for analogue IC tapeout?
Mar 15, 2024 · One generality that matters a lot to analog ICs: compared to discrete components their components are far less accurate, but far more precisely matched. This means that a lot of …
Highest speed of operation [BJT vs MOSFET] [closed]
Jan 22, 2024 · You can make SiGe bipolar transistors (on a chip) with ft's approaching 100GHz, and 4000 series CMOS (enhancement mode MOSFETS) that struggle to switch at 5MHz with low supply …
Maximum Allowed Radiated Continous Wave Power in 61.25GHz ISM …
Nov 25, 2020 · Still, getting stuff to work at 60 GHz isn't easy and probably will require a chip in SiGe technology like described in the last article you refer to. Maybe the solution C. Bredendiek etc. …
rf - Why do amplifiers have minimum frequencies? - Electrical ...
Nov 7, 2023 · RF amplifiers, both power amplifiers and low noise amplifiers, are rated with a minimum and maximum frequency. For example, the Analog Devices HMC517LC4 Low Noise Amplifier has a …