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
Method and apparatus for filter-less class D audio amplifier EMI reduction
Bootstrap gate driver
Distortion estimation for quantized data
Method of modified facies proportions upon history matching of a geological model
Cathode active material and lithium secondary battery comprising the same
High performance data transport system and method
Cycloalkylamine substituted isoquinoline and isoquinolinone derivatives
  Randomly Featured Patents
Continuous harvester for plants grown in rows
Moving a virtual articulated object in a virtual environment while avoiding internal collisions between the articulated elements of the articulated object
Imidazo(4,5-C)pyridines as antiosteoporotic agents
Synthesis of hydrous magnesium silicates
Locomotive cabin ventilation apparatus and method
Real time rank ordering logic circuit
Method and apparatus for making articles
Increased recovery of active proteins
Specific polybranched polyaldehydes, polyalcohols, and surfactants, and consumer products based thereon
Negative voltage detection circuit and semiconductor integrated circuit