Dielectric flare notch radiator with separate transmit and recei

Details Dielectric flare notch radiator with separate transmit and recei Dielectric flare notch radiator with separate transmit and recei

1994-05-20

1999-09-07

Wimer, Michael C.

Communications: radio wave antennas

Antennas

Slot type

H01Q 138

Patent

active

059493828

ABSTRACT:
A dielectric antipodal flared notch radiator with separate transmit and receive ports for phased array and active array antennas. A circulator is integrated directly to the broadside coupled-strip transmission line portions of the antipodal flared notch radiator without the use of baluns. The look-in impedance of the radiator element is improved as a result of the circulator and lack of a balun. By sandwiching the antipodal flared notch between two additional layers of dielectric, the device can be made a building block for broadband active array antennas.

REFERENCES:
patent: 4500887 (1985-02-01), Nester
patent: 4509055 (1985-04-01), Fassett
patent: 4782346 (1988-11-01), Sharma
patent: 4918409 (1990-04-01), Lamberty
"Broadband Antenna Study," L.R. Lewis et al., Final Report AFCRL-TR-75-0178, Air Force Cambridge Research Laboratories, Mar. 1975.
"Analysis of the Tapered Slot Antenna," Janaswamy et al., IEEE Trans. Antennas and Propagation, vol. AP-35, No. 9, Sep. 1987, pp. 1058-1059.
"The Vivaldi Aerial," P.J. Gibson, Proceedings of the Ninth European Microwave Conference, 1979, at pp. 101-105.
"Improved design of the Vivaldi antenna," E. Gazit, IEE Proc., vol. 135, Pt.H, No. 2, Apr. 1988, at pp. 89-92.
"A New Model for Broadband Waveguide-to-Microstrip Transition Design," Ponchak et al. Microwave Journal, May, 1988, pp. 333 et seq.

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