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
Heat stable variants of plant adenosine diphosphate glucose pyrophosphorylase small subunit
Epitaxial substrate for electronic device, in which current flows in lateral direction and method of producing the same
Layout design defect repair based on inverse lithography and traditional optical proximity correction
Scalable header extension
Minimizing mismatch during compensation
Flash drive
Method of stimulating tissue healing
  Randomly Featured Patents
Printer head carriage and method for aligning printer heads on a printer head carriage
Method of forming a resilient contact structure
TDMA Intertransponder communication
Variable shaped electron beam lithography system and method for manufacturing substrate
Method for fabricating a dual damascene structure
Door structure
Image data processing apparatus and image display apparatus
LED light
Generation and use of digital signatures
Adjustable spreading locking pliers