Resources Contact Us Home
Fully integrated ultra wideband transmitter circuits and systems

Image Number 4 for United States Patent #7979036.

Disclosed is a novel design of a fully integrated UWB transmitter. The transmitter includes a pulse generator, a pulse modulator, and an ultra-wideband drive amplifier. A new low voltage low power pulse generator circuit is disclosed which can be fully integrated in CMOS or BiCMOS process. This circuit includes a squaring stage, an exponential stage, and a second-order derivative stage. Based on this, PPM, BPSK and PAM pulse modulator circuits and system are disclosed. The modulated pulse is symmetrical second-order derivative Gaussian pulses with a bandwidth up to 5 GHz and having sufficient swing for UWB applications. An ultra-wideband driver amplifier is proposed to amplify the modulator output and drive the antenna. For the driver amplifier, common source resistor and inductor shunt feedback with current reuse technique is employed to achieve the ultra-wideband bandwidth, high gain, and providing matching for the antenna simultaneously.

  Recently Added Patents
Newly identified human rhinovirus of HRV-C and methods and kits for detecting HRV-Cs
Schottky diode and method of manufacture
System and method for associating financial transaction data with a user's project data using a portable electronic device
Method for adjusting link speed and computer system using the same
Author signatures for legal purposes
Compounds, compositions and methods for reducing lipid levels
  Randomly Featured Patents
Multi-stage aldoses to polyols process
Film thickness measurement of structures containing a scattering surface
Multi-wire locking system
Structure for assembling electrical windings about a central member
Thermometer for body temperature detection
Ammonia for use in manufacture of GaN-type compound semiconductor and method for manufacturing GaN-type compound semiconductor
Liquid container
Plasma Display using a double-walled enclosure
Miniature rose plant named Wow
Exposure unit with staggered LED arrays