Fish finder and depth sounder transducers

For the Marine Electronics industry MTC ElectroCeramics designs and manufactures transducers to meet a range of applications. The main production for the Marine industry are Depth Sounder Transducers and Fish Finders.

Wideband Transducer Wide bandwidth transducers have a short ring down time. This allows the user to distinguish between objects close together within the transducers field of view, for example, being able to distinguish fish close to the sea bed. Additionally, it is possible to use more advanced imaging algorithms such as Chirp algorithms (requires driving with a frequency sweep) or Synthetic Aperture Focusing Techniques (SAFT). Using the higher frequency will increase the target resolution further. The low frequency mode is still available for better deep-water performance and the high frequency mode is available for the higher resolution. The wider bandwidth these two modes offer also offers some increase in options.

	Conventional 200 KHz design	Wideband bulk ceramic	09232/000 1-3 Composite transducer	09222/000 Dual Frequency transducer
Q	25-40	3	2	2
Bandwidth	10% of centre frequency (i.e. 195 – 205kHz)	45% of centre frequency (i.e. 155kHz – 245kHz)	55% of centre frequency (106kHz to 186kHz)	55-89khz and 150-220kHz
Side lobe level	-20dB (10% of main lobe)	-20dB (10% of main lobe)	< - 25dB	< - 25dB

Possible transducer designs include through-hull, in-hull, side-scan or transom mount designs. We design these transducers to operate at either single frequencies or we can provide dual frequency / beam designs for operation in a wide range of depths.

Our latest transducers include designs using 1-3 composite to achieve broadband performance.

Our designs are tested in our in house underwater testing facility which is used to characterise projector acoustic beam shapes as well as receiver sensititivity.

We have a long history of supplying high volumes of components into this market.

Go back to Transducers for Marine Electronics and Sonar or see also: