Sonar transmitter

Details Sonar transmitter Sonar transmitter

2007-01-02

2007-01-02

Lobo, Ian J. (Department: 3662)

Communications, electrical: acoustic wave systems and devices

Transmitter systems

Reexamination Certificate

active

11134355

ABSTRACT:
Provided is a sonar transmitter in which the structure is simplified and the power loss is decreased. A sonar transmitter comprises: a load unit having a transformer constituted with a primary wiring and a secondary wiring, and a wave transmitter to which the secondary voltage generated in the secondary wiring is applied; a control unit for outputting a PWM signal which originally has no offset voltage; and a transmission circuit unit which amplifies the PWM signal outputted from the control unit and applies it to the primary wiring as the primary voltage. The control unit comprises a memory circuit formed by ROM or RAM which stores a transmission signal waveform and a control circuit formed by a microcomputer or DSP, for example. With the present invention, a conventional feedback circuit, an adder and the like become unnecessary by outputting the PWM which originally contains no offset voltage.

REFERENCES:
patent: 3900823 (1975-08-01), Sokal et al.
patent: 2 402 484 (2004-12-01), None
patent: 9-149658 (1997-06-01), None
patent: 10-285123 (1998-10-01), None
patent: 2002-64983 (2002-02-01), None
patent: 2002-125378 (2002-04-01), None
patent: 2002-325460 (2002-11-01), None
European Search Report dated Aug. 17, 2005.

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