Communications: radio wave antennas – Antennas – Balanced doublet - centerfed
Patent
1981-08-31
1984-11-20
Wilbur, Maynard R.
Communications: radio wave antennas
Antennas
Balanced doublet - centerfed
343 5NQ, G01S 740
Patent
active
044841949
ABSTRACT:
An arrangement is provided for correcting the phase and amplitude errors occurring in the quadrature detector of a Doppler radar system. A correction unit (KE) is connected to both analogue-digital converters (AD1, AD2) in the I and Q channels to receive a radar signal which has been received by the system antenna and phase-detected in the quadrature detector (FD1, FD2, FS). The output of the correction unit (KE) is connected to a regulating network (RN) for sensing the output signals from the correction unit (KE) and controlling the latter so that the amplitude and phase errors (a' and .theta.') will be zero.
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Kaiser K. R.
Telefonaktiebolaget L M Ericsson
Wilbur Maynard R.
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