Radio switching apparatus

Details Radio switching apparatus Radio switching apparatus

1997-03-06

1999-05-18

Zimmerman, Brian

Communications: electrical

Continuously variable indicating

With meter reading

34082531, 34082534, 34082572, 333151, 333154, 333133, 333193, 333194, 333195, 333196, 455 78, H03H9/64

Patent

active

059054492

ABSTRACT:
A radio switching apparatus is provided which is actuated upon reception of a radio signal and which is capable zero or near-zero standby electric power consumption. The radio switching apparatus includes a receiving antenna; a surface-acoustic-wave device to which a signal received by the antenna is fed and which extracts a specific pattern contained in the signal; a storing circuit for storing output electric power of the surface-acoustic-wave device; and a switch circuit which is turned on when the output voltage of the storing circuit exceeds a set value.

REFERENCES:
patent: 4506239 (1985-03-01), Cho et al.
patent: 4752709 (1988-06-01), Fujishima et al.
patent: 4794622 (1988-12-01), Isaacman
patent: 5146613 (1992-09-01), Anderson
patent: 5568095 (1996-10-01), Hill

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