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1. (WO1997018625) FM MODULATOR
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1997/018625 International Application No.: PCT/JP1996/001706
Publication Date: 22.05.1997 International Filing Date: 20.06.1996
Chapter 2 Demand Filed: 28.08.1996
IPC:
H03C 3/10 (2006.01)
H ELECTRICITY
03
BASIC ELECTRONIC CIRCUITRY
C
MODULATION
3
Angle modulation
10
by means of variable impedance
Applicants:
IKEDA, Takeshi [JP/JP]; JP
OKAMOTO, Akira [JP/JP]; JP (UsOnly)
Inventors:
IKEDA, Takeshi; JP
OKAMOTO, Akira; JP
Agent:
AMAGAI, Masahiko; Amagai Tokkyo Jimusyo Wacore Shinjuku Daiichi-Building 803 7-26, Nishishinjuku 7-chome Shinjuku-ku Tokyo 160, JP
Priority Data:
7/32222216.11.1995JP
Title (EN) FM MODULATOR
(FR) MODULATEUR FM
Abstract:
(EN) An FM modulator (1) includes two phase shifting circuits (10C and 130C) and an FET (35) is provided in a CR circuit in the circuit (130C). The FM modulator (1) oscillates at the frequency at which the sum of the amounts of phase shift by means of the two circuits (10C and 130C) is 360°. When the channel resistance of the FET (35) is slightly changed by a signal inputted externally, the modulator (1) outputs FM signals from an output terminal (92) by directly utilizing the change for the frequency modulation.
(FR) Un modulateur FM (1) comprend deux circuits déphaseurs (10C, 130C), un transistor à effet de champ FET (35) équipant un circuit résistance-capacité monté dans le circuit déphaseur (130C). La fréquence d'oscillation du modulateur FM (1) est telle que la somme des valeurs de déphasage des deux circuits déphaseurs (10C, 130C) est de 360°. Lorsqu'un signal fourni extérieurement modifie légèrement la résistance canal du transistor à effet de champ (35), le modulateur (1) utilise directement cette modification pour la modulation de la fréquence, les signaux FM produits partant d'une borne de sortie (92).
Designated States: AU, CN, JP, KR, RU, US, VN
European Patent Office (AT, BE, CH, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE)
Publication Language: Japanese (JA)
Filing Language: Japanese (JA)
Also published as:
AU1996061378