Patent ID: 9559424
Date: 2017-01-31
CPC Classifications: H01P,H01Q

Claim:
1. An antenna feed configured to receive a signal having a wavelength, comprising: a cylindrical body having an axis and a circumference; a plurality of pins, each pin extending from one side of the cylindrical body to an opposite side of the cylindrical body and intersecting the axis, wherein the plurality of pins is organized as a series of pin pairs, each pin pair comprising two adjacent pins having a same fixed angle therebetween and located at a position along said axis, a spacing between pins in a pin pair is much smaller than a spacing between pins of adjacent pin pairs, and the pin pairs are spaced along the axis at approximately equal distances relative to adjacent pin pairs, and each pin pair is rotated around the axis by an approximately equal number of degrees with respect to adjacent pin pairs; and a plurality of capacitive tuning probes arranged in probe pairs, wherein probes of each probe pair pass through opposing sides of the cylindrical body at about a same position along the axis as a corresponding pin pair and at locations on the circumference offset by approximately 90° from one of the pins of the corresponding pin pair.