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
Generating network topology parameters and monitoring a communications network domain
Digital photographing apparatus, method of controlling the same, and recording medium for the method
Device, information processing method, and computer-readable storage medium
Integrated circuit packaging system with an integral-interposer-structure and method of manufacture thereof
Scalable encoding apparatus, scalable decoding apparatus, scalable encoding method, scalable decoding method, communication terminal apparatus, and base station apparatus
Battery pouch sheet edge insulation
Methods of making a diagnostic device by interweaving hydrophobic and hydrophilic fibers, and diagnostic device therefrom
  Randomly Featured Patents
Thermoplastic molding materials
Multi-band radio terminal apparatus
Metal film and metal film-coated member, metal oxide film and metal oxide film-coated member, thin film forming apparatus and thin film forming method for producing metal film and metal oxide
Phosphoric acid purification
Method for separating and processing signal and bearer in all IP radio access network
Shared TOD clock modification bit
Fishing lure retriever
Multistage paper feeding/conveying apparatus and method that uses electro static forces
Protective device for threaded portion of tubular member
Modular heating or cooling system