Wired microstrip linear array of dipoles

A wired microstrip array of dipole elements for radiating a signal of a predetermined frequency, said array of dipole elements comprising a dielectric circuit board having a top side and an underside;

• a conductive ground plane disposed over said underside of said circuit board;
• a main microstrip line adapted to propagate said signal of said predetermined frequency therealong disposed on the top side of said circuit board;
• first and second pluralities of microstrip dipole elements disposed at intervals along first and second parallel lines on opposite sides of said main microstrip dipole elements having a center;
• a first set of tributary microstrip lines of equal electrical length connected at one wavelength intervals along said main microstrip line to successive alternate ones of said first and second pluralities of said microstrip dipole elements at points offset in a consistent direction from the respective centers thereof;
• and a second set of tributary microwave lines of said equal electrical length connected along said main microstrip line midway between each line of said first set thereof to successive remaining ones of said first and second pluralities of microstrip dipole elements at points offset in a direction opposite to said consistent direction from the respective centers thereof.

A wired microstrip linear array of dipole elements for radiating a signal of a predetermined frequency, said array of dipole elements comprising a dielectric circuit board having a top side and an underside;

• a main microstrip line adapted to propagate said signal of said predetermined frequency therealong disposed on the top side of said circuit board;
• a first plurality of microstrip dipole elements disposed at intervals along a line on the top side of said circuit board, each of said microstrip dipole elements having a center;
• a first set tributary microstrip lines of equal electrical length connected at one wavelength intervals along said main microstrip line to successive alternate ones of said microstrip dipole elements at points offset in a consistent direction from the respective centers thereof;
• a second set of tributary microstrip lines of said equal electrical length connected along said main microstrip line midway between said first set thereof to successive remaining ones of said microstrip dipole elements at points offset in a direction opposite to said consistent direction from the respective centers thereof;
• conductive ground plane disposed on the underside of said circuit board commencing directly under the respective junctions of said first and second sets of tributary microstrip lines with said first plurality of microstrip dipole elements and tapering outwards along and running the full length of said tributary microstrip lines;
• additional conductive ground plane disposed on the underside of said circuit board along said main microstrip line connecting with said ground plane along said tributary microstrip lines;
• and a second plurality of microstrip dipole elements corresponding to said first plurality thereof disposed on said underside of said circuit board along said line and connected to the commencement of said ground plane with an offset opposite to that of the respective dipole elements on said top side of said circuit board.

A wired microstrip linear array of dipole elements for radiating a signal of a predetermined frequency, said array of dipole elements comprising a circuit board;

• a ground plane disposed on one side of said circuit board;
• a microstrip line of predetermined width substantially less than one-half wavelength at said predetermined frequency disposed along said circuit board on the side opposite from said one side thereof;
• a plurality of microstrip dipole elements disposed orthogonally across said microstrip line at one-half wavelength intervals at said predetermined frequency, the junction of adjacent dipoles with said microstrip line being offset in opposite directions from the respective centers thereof by an amount less than one-half of said predetermined width;
• and means coupled to the junction of a dipole with said microwave line for feeding said array.