Telecommunications and Wireless » Broadcasting-Receiving Equipment
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Efficient, Reliable, Robust Power Amplifiers for Wireless Communications
6210 – Background: This technology was developed to ensure high efficiency levels and to address process variation and reliability effects for power amplifiers used in radio frequency (RF) communication systems. Integrated power amplifiers for RF systems operate at large power back-off while enduring intense process variation and high signal levels, all of which reduces efficiency,... Read More
Electrically Short Antenna with High Bandwidth
6746 – This technology is an electrically short antenna with high bandwidth and portability. Background: Generation of radio waves with electrically short antennas, where the antenna is much shorter than a wavelength, is a long-running challenge. Efficient radiation is currently possible only in a narrow frequency range, using electrical matching schemes that cancel out the high antenna... Read More
RF Switch Circuit Optimized for High Linearity Applications (modified title)
5196 – High-Power-Handling SiGe HBT Radio-Frequency Switch Highly integrated, low-cost circuits have fueled the growth of BiCMOS technology for Radio Frequency (RF) applications, and the integration of bandgap-engineered Silicon-Germanium (SiGe) technologies has greatly increased the performance of silicon-based RF integrated circuits. Radio Frequency switches are crucial for the operation of... Read More
Wireless Implantable Neural Recording
4654 – A system for recording neural signals or other biological signals. The system includes a plurality of electrodes, low noise amplifiers, an analog to time converter, an RF modulator, and an antenna. The plurality of implantable electrodes can receive analog bioelectrical signals. The analog-to-time converter includes a plurality of low noise amplifiers comprising built-in bandpass filtering... Read More
Precision CMOS Amplifier Using Floating-Gate Transistors for Offset Cancellation
3492 – Disclosed herein is an operational amplifier including: a differential pair of transistors coupled to a pair of input signals; and a pair of floating-gate transistors coupled to the differential pair of transistors, wherein the pair of floating-gate transistors are operable for reducing an offset voltage of the operational amplifier. Also disclosed herein is an operational amplifier... Read More
Programmable Analog Modulator/Demodulator
3490 – A large-scale field-programmable analog array (FPAA) for rapidly prototyping analog systems and an arbitrary analog waveform generator. The large-scale FPAA includes a floating-gate transistor array and a plurality of computational analog blocks (CABs), which may be adapted to set bias voltages for operational transconductance amplifiers (OTAs), adjust corner frequencies on the capacitively... Read More