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
Case for electronic device
Automatic fixup of network configuration on system image move
Ignition device in particular for an internal combustion engine, and method for manufacturing same
Minimizing mismatch during compensation
Image forming apparatus forming images in response to image formation request from operation unit or external device
Charge domain filter and method thereof
Defected ground plane inductor
  Randomly Featured Patents
Crosslinked polymeric ammonium salts
Optical trackpad module and method of using same
Watertight raising band for manhole
Stationary clamping device
Anti-hypercholesterolemic compounds
Benzoxazine dyes
Silicon thin film transistors, systems, and methods of making same
Adeno associated virus vectors for the treatment of a cardiomyopathy
Sensor grid for an electromagnetic digitizer tablet
Continuously variable transmission provided with a torque converter