Telecommunications and Wireless » Broadcasting-Receiving Equipment

Found 6 technologies within Broadcasting-Receiving Equipment RSS ATOM

Dual-Polarized Antenna for OFDM

6492 – Background: Orthogonal Frequency Division Multiplexing (OFDM) represents a novel way of transmitting wireless signals from cellular phones and other wireless telecommunication devices. It enables radio-frequency (RF) signals being broadcast from the device to be spaced much closer together without interference between signals resulting in lower signal power and consequent data loss. Inserting... Read More

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

Efficient Broadband Electrically Short Plasma Transmitting Antennas

6746 – Background Extremely Low Frequency (ELF, 300-3000 Hz) Very Low Frequency (VLF, 3-30 kHz), and Low Frequency (LF, 30-300 kHz) radio waves have enormous applications. These radio waves propagate efficiently to global distances, allowing long-range over-the-horizon communications and remote sensing, and have long been used for naval communications and for global navigation. For... 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

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