Title: Microwave hybrid network producing desired phase difference for use in Doppler radar systems

Abstract: A microwave transmission-line circuit for a Doppler radar with direction sensing comprises a hybrid junction and four split-tee junctions of which two constitute power dividers and two constitute power combiners; the inputs of the two dividers are respectively connected to two ports of the hybrid junction, and the outputs of the dividers are connected to the combiners; the lengths of the interconnections of the split-tee junctions are such that two Doppler signals in phase quadrature can be respectively derived from the outputs of the combiners.

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Inventors: Chua, Lye-Whatt (near Redhill, EN)

Application Number: 521261
Filing Date: 1974-11-06
Publication_date: 1976-05-04
Assignee: U.S. Philips Corporation (New York, NY)
Primary Class(es): 342/114 333/117, 333/120, 333/161, 455/326
Other Classes:
US Patent Ref:

3310748	Mar, 1967	Putnam	325/446.
3582759	Jun, 1971	Malloy	333/11.
3769610	Oct, 1973	Savarin et al.	333/10.
3870960	Mar, 1975	Hallford et al.	325/446.

Other Refs:
Primary Examiner: Gensler, Paul L.
Assistant Examiner:
Attorney: Trifari; Frank R., Berka; George B.