Efficient simultaneous electromagnetic transmission or reception

Details Efficient simultaneous electromagnetic transmission or reception Efficient simultaneous electromagnetic transmission or reception

1979-04-02

1981-02-03

Strecker, Gerard R.

Electricity: measuring and testing

Of geophysical surface or subsurface in situ

With radiant energy or nonconductive-type transmitter

324330, G01V 310, G01V 3165

Patent

active

042491290

ABSTRACT:
This invention relates to electromagnetic mapping wherein magnetic fields of two or three different and normally audio frequencies may be transmitted or received efficiently using induction coils with the same orientation and essentially the same spatial location. Flat, air cored coils are used and are overlapped so as to have essentially zero mutual inductance between pairs.

REFERENCES:
patent: 2451596 (1948-10-01), Wheeler
patent: 2557994 (1951-06-01), Ostlund
patent: 2642477 (1953-06-01), Puranen et al.
patent: 2955250 (1960-10-01), Shaw et al.
patent: 3012190 (1961-12-01), Doll

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