Wireless transmitter carrier phase synchronization

Details Wireless transmitter carrier phase synchronization Wireless transmitter carrier phase synchronization

1996-01-03

1998-08-25

Zimmerman, Brian

Communications: electrical

Continuously variable indicating

With meter reading

235497, 368 47, 395551, 3408252, 34082522, H04Q 100

Patent

active

057987092

ABSTRACT:
A master RF module (12), a slave RF module (20) without an internal oscillator, and additional circuitry (40) (52). A pick up coil (30) disposed perpendicular to the antenna (16) of the master RF module (12), is connected to the additional circuitry (40) (52). Transmission from the master RF module (12) is received by the pick up coil (30) and is filtered (42) (54), and amplified (44, 46) (64, 78) by the additional circuitry (40) (52). The amplified signal is used as an oscillator input (22) to the slave RF module (20) and is also converted into a square wave monoflop signal by square wave converter (48) (98) for enabling the transmitter control (24) of the slave RF module (20).

REFERENCES:
patent: 3681914 (1972-08-01), Loewengart
patent: 3810161 (1974-05-01), Sahasrabudhe
patent: 3881310 (1975-05-01), Gerum
patent: 4569598 (1986-02-01), Jacobs
patent: 4680582 (1987-07-01), Mejia
patent: 4918416 (1990-04-01), Walton
patent: 5053774 (1991-10-01), Schuermann et al.
patent: 5263172 (1993-11-01), Olnowich
patent: 5327467 (1994-07-01), De Gaudenzi
patent: 5521887 (1996-05-01), Loomis
patent: 5544155 (1996-08-01), Lucas
patent: 5614891 (1997-03-01), Zeinstra

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