Title:
無線周波数信号を発生させる方法および装置
Document Type and Number:
Japanese Patent JP3835822
Kind Code:
B2
Abstract:
The present invention relates to arrangements and methods for radio frequency modulation and power amplification of an information signal (XIF). Modulation and amplification of the information signal (XIF) is carried out with very high linearity and efficiency over a wide frequency band by sigma-delta modulating (410) said information signal (XIF), 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.
Inventors:
Helberg, Rals Richard Burger
Application Number:
JP51354498A
Publication Date:
October 18, 2006
Filing Date:
August 26, 1997
Export Citation:
Assignee:
Telephone Activola Get Elm Ericsson (Pubble)
International Classes:
H03M3/02; H04L27/20; H03F3/24; H04B14/06; H04L25/03; H04L25/49; H04L27/36
Domestic Patent References:
| JP9186728A | ||||
| JP4233357A | ||||
| JP6021991A |
Attorney, Agent or Firm:
Sonoda Yoshitaka
Kobayashi Yoshinori
Kobayashi Yoshinori