Loop type standard magnetic field generator

Details Loop type standard magnetic field generator Loop type standard magnetic field generator

1976-02-17

1978-04-04

Griffin, Robert L.

Communications: radio wave antennas

Antennas

Balanced doublet - centerfed

325 67, 325133, 325363, 343703, 343842, H04B 104

Patent

active

040830063

ABSTRACT:
In a loop type standard magnetic field generator comprising loop within which a transmission line having an inner conductor and an outer conductor is coaxially provided and an oscillator for feeding a signal to the loop through the transmission line, the magnetic field strength at a given point is obtained, irrespective of the signal frequency, from the indicated value of an indicator connected to the loop via the transmission line and an element connected thereto, by choosing the length of the transmission line and/or the impedance of the element so that the frequency characteristic of the ratio of the indicated value of the indicator to the electric current flowing through the loop is cancelled by the frequency characteristic of the ratio of the electric current flowing through the loop to the magnetic field strength at the given point to thereby make the frequency characteristic of the indicated value of the indicator and the magnetic field strength constant.

REFERENCES:
patent: 3296533 (1967-01-01), Karpinsky
patent: 3332019 (1967-07-01), Leostic et al.
patent: 3902177 (1975-08-01), Mori et al.

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