Arrangements and methods for generating a radio frequency signal

Details Arrangements and methods for generating a radio frequency signal Arrangements and methods for generating a radio frequency signal

1997-09-05

2000-07-25

Pham, Chi H.

Pulse or digital communications

Pulse code modulation

375244, 375296, 341143, 36472404, H04B 1404

Patent

active

060944587

ABSTRACT:
The present invention relates to arrangements and methods for radio frequency modulation and power amplification of an information signal (X.sub.IF). Modulation and amplification of the information signal (X.sub.IF) is carried out with very high linearity and efficiency over a wide frequency band by sigma-delta modulating (410) said information signal (X.sub.IF), whereby a digital signal (Y) is generated. The digital signal (Y) is up-mixed and voltage switched (420) by voltage-fed switches (423) controlled by the up-mixed digital signal (RF). Said switches are preferably conductive elements whose electric conductivity depend on the amount of ionising radiation that falls on the elements.

REFERENCES:
patent: 5157343 (1992-10-01), Voorman
patent: 5401953 (1995-03-01), Spencer et al.
patent: 5469475 (1995-11-01), Voorman
patent: 5530722 (1996-06-01), Dent et al.
patent: 5617058 (1997-04-01), Adrian et al.
patent: 5701106 (1997-12-01), Pikkarainen et al.
patent: 5734683 (1998-03-01), Hulkko et al.
patent: 5821891 (1998-10-01), Shi et al.
D.P. Meyer, "A Multicarrier Feed-Forward Amplifier Design," Microwave Journal, pp. 78-88, Oct. 1994.
A. Bateman et al., Linear Transceiver Architectures, IEEE Vehicular Technologoy Conference, pp. 478-484, 1988.
K.Y. Chan et al., Liner Modulators Based on RF Synthesis: Realization and Analysis, IEEE Transactions on Circuits and Systems: Fundamental Theory and Applications, vol. 42, No. 6, Jun. 1995.
V.F. Dias et al., "Sigma-Delta Modulators for High-Resolution and Wide-Band A/D Converter Applications", Microelectronics Journal, pp. 253,277, 1994.
V.F. Dias, "Complex-Signal Sigma-Delta Modulators for Quadrature Bandpass A/D Conversion," Microelectronics Journal, vol. 27, No. 6, pp. 505-524, 1996.
K. Cardwell et al., Progress in UWB Generation with Linear Silicon Switches Optically Activated Switching III, SPIE, vol. 1873, pp. 238-248, 1993.
R. Mason et al., "High Speed, High Resolution Analogue-to-Digital Conversion Using a Hybrid Electro-Optic Approach, " IEEE International Symposium on Circuits and Systemns, pp. 704-707, 1995.
A. Rosen, "Long Lifetime Silicon Photoconductive Semiconductor Switches," Optically Activated Switching III, SPIE, vol. 1873, pp. 27-38, 1993.
International Search Report for SE 96/01201 Jul. 8, 1997.

Affiliated with

Also associated with

Rating

Arrangements and methods for generating a radio frequency signal does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Arrangements and methods for generating a radio frequency signal, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Arrangements and methods for generating a radio frequency signal will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1341803