Title:
電子チップを有する送受信器
Document Type and Number:
Japanese Patent JP6908678
Kind Code:
B2
Abstract:
A transmitter-receiver includes an electronic chip a mixer for mixing the frequency of a received radio frequency signal with that of an oscillating signal supplied by a first frequency synthesizer in, a switch having two inputs connected to an output of the mixer and to an auxiliary input terminal, a filter and gain stage connected to the output of the switch, and a modulator-demodulator connected to the output of the filter and gain stage. The first frequency synthesizer is connected between the output of the modulator-demodulator and radio frequency input and output terminal, and configured to supply a frequency-modulated signal to the radio frequency input and output terminal. The electronic chip further includes a second frequency synthesizer connected between the output of the modulator-demodulator and an auxiliary output terminal, and configured to synthesize a modulated low-frequency signal supplied by the auxiliary output terminal, whereby the center value of the low frequency is equal to the value of the intermediate frequency.
Inventors:
Arnaud Casagrande
Thierry Skordili
Luca Drosa
Jean Goris
Jean-Luck Allen
Thierry Skordili
Luca Drosa
Jean Goris
Jean-Luck Allen
Application Number:
JP2019205981A
Publication Date:
July 28, 2021
Filing Date:
November 14, 2019
Export Citation:
Assignee:
The Swatch Group Research and Development Limited
International Classes:
H04B1/40; H04B10/114; H04B11/00
Domestic Patent References:
| JP59143135U | ||||
| JP2002124960A | ||||
| JP2001156723A | ||||
| JP60190042A | ||||
| JP10322239A | ||||
| JP10285114A | ||||
| JP2002246965A |
Foreign References:
| US20020122231 |
Attorney, Agent or Firm:
Shigeki Yamakawa
Masaki Yamakawa
Masaki Yamakawa