Single electrode sense circuit for charge-coupled transversal fi

Details Single electrode sense circuit for charge-coupled transversal fi Single electrode sense circuit for charge-coupled transversal fi

1980-02-07

1982-05-18

Nussbaum, Marvin L.

Wave transmission lines and networks

Coupling networks

Frequency or time domain filters and delay lines utilizing...

307221D, 333166, H03H 1502, G11C 1928, H03K 5156

Patent

active

043307698

ABSTRACT:
A charge coupled device transversal filter having split electrodes each having a sense portion and a complementary dummy portion. All electrode sense portions are coupled to a single sense line and all dummy portions are connected to a reference voltage. Tap weights are determined by relative lengths of successive sense portions and weighted samples are taken by shifting charge packets from one sense electrode position to a second while sensing the difference in displacement charge induced in successive sense electrodes. The structure is less sensitive to manufacturing tolerances than earlier structures and provides a sense signal with essentially no common mode component to a sense amplifier.

REFERENCES:
patent: 4232279 (1980-11-01), Prince
Weckler et al., "Fully-Integrated CTD Filter with Output Sensing", 1978 IEEE International Solid-State Circuits Conference, Session VIII, Feb. 15, 1978, (Digest of Technical Papers) pp. 84-85.
Sequin et al., "Self-Contained Charge-Coupled Split-Electrode Filters Using a Novel Sensing Technique", IEEE Journal of Solid-State Circuits, vol. SC12, No. 6, Dec. 1977, pp. 626-637.
Baertsch et al., "The Design and Operation of Practical Charge-Transfer Transversal Filters", Reprinted from IEEE Trans. Electron Devices, vol. ED-23, Feb. 1976, pp. 131-141.

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