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
SRB enhancement on HS-DSCH during cell change
User-initiated quality of service modification in a mobile device
Center spreader adapter tool for toilet paper rolls and paper towel rolls that do not have inner cardboard tubes
Integrated monitoring in problem management in service desk
Packaging sleeve
Self-service channel marketplace
Substituted thiophene pentamers
  Randomly Featured Patents
Brush head for electric toothbrush
Process for fabricating films of uniform properties on semiconductor devices
Display panel driving apparatus
Saw stop
Reagents and methods for the diagnosis and treatment of diabetes and stiff man syndrome
Alkaline light duty liquid detergents that are non-staining to aluminum
Copying method and apparatus
Chip buildup detection and control method and apparatus
Creating notable nonrandom patterns in games to encourage play
Combined gas and steam turbine plant with coal gasification