Publication: The design of frequency discriminator for ringer design using silterra cmos 0.18 µm technology
| datacite.subject.fos | oecd::Engineering and technology::Electrical engineering, Electronic engineering, Information engineering::Electrical and electronic engineering | |
| dc.contributor.author | Chan, Hui Shan | |
| dc.date.accessioned | 2024-08-09T02:13:13Z | |
| dc.date.available | 2024-08-09T02:13:13Z | |
| dc.date.issued | 2008-03-01 | |
| dc.description.abstract | Ring frequency discrimination is an electronic system that can check the frequency of any incoming signal whether it is in the frequency band or not. It is also one of features for CMOS Speech and Ringer integrated circuit (IC) that can perform all the necessary speech and line interface functions for telephone sets. The main objective for this final year project is designing the ring frequency discriminator, so that it can use to determine the incoming ringing signal is valid or not. Ring detection circuit will assures that the input signal is valid. The signal is considered as a valid signal if it has frequencies between 20 Hz and 60 Hz (20 Hz < ring frequencies < 60 Hz). The ring frequency discriminator will be designed using the SILTERRA CMOS 0.18 µm technology. Cadence Spectra is used to implement the design from schematic and analysis level. For future work, it is also possible to design a ring melody generator. Once the valid ring signal is detected and is present for about 75 ms (depends on the designer) continuously, the melody generator will be activated, the ring signal will be monitored continuously and the melody generator will be immediately turn on or off according to the momentary presence of a valid or invalid ring signal respectively until next power on reset or off-hook. The melody generator of ICM7111 creates 2 frequencies of 1250Hz and 1600Hz. | |
| dc.identifier.uri | https://erepo.usm.my/handle/123456789/20168 | |
| dc.language.iso | en | |
| dc.title | The design of frequency discriminator for ringer design using silterra cmos 0.18 µm technology | |
| dc.type | Resource Types::text::report | |
| dspace.entity.type | Publication | |
| oairecerif.author.affiliation | Universiti Sains Malaysia |