ET INDUSTRIES, INC. Patent applications |
Patent application number | Title | Published |
20130234908 | Isolation of Polarizations in Multi-Polarized Scanning Phased Array Antennas - A multi-polarized scanning phased array antenna includes a plurality of elements, a first feed line operatively coupling the plurality of elements, a second feed line operatively coupling the plurality of elements, and a phase delay operatively coupled in at least one of the first feed line and the second feed line. The phase delay is configured to cancel a polarized signal associated with the multi-polarized scanning phased array antenna. A method of increasing isolation between polarizations in a multi-polarized scanning phased array antenna includes coupling a plurality of elements operatively with a first feed line, coupling the plurality of elements operatively with a second feed line, and coupling a phase delay operatively in at least one of the first feed line and the second feed line such that a polarized signal associated with the multi-polarized scanning phased array antenna is cancelled. | 09-12-2013 |
20090061789 | Polypod Antenna - Embodiments of the present invention include antennas for transmitting and receiving electromagnetic signals. The antennas are configured to transmit a first electromagnetic signal at full power via a first set of radiating elements and to transmit the first electromagnetic signal at an attenuated power via a second set of radiating elements to decrease side lobes associated with the transmission of the first electromagnetic signal. The antennas are configured to receive a second electromagnetic signal having an associated first power level via the second set of radiating elements and to form an aggregated electromagnetic signal having a second power level that is a multiple of the first power level. The antennas are configured to attenuate the aggregated signal to form an attenuated electromagnetic signal having a third power level to facilitate uniform reception of the second electromagnetic signal and tapered transmission. | 03-05-2009 |
20090058753 | Tree Trunk Antenna - Embodiments of the present invention include a patch antenna having a patch element, a ground plane, a feedline, and an electromagnetic shield. The patch element transmitting and/or receives electromagnetic signals. The ground plane is spaced at a specified distance from the patch element. The feedline guides the electromagnetic signal and extends through an opening in the ground plane and to the patch element. The feedline is electrically coupled to the patch element to guide an electromagnetic signal to or from the patch element. The electromagnetic shield extends, at least partially, between the ground plane and the patch element and is electrically coupled to the ground plane. The electromagnetic shield is configured to control an impedance associated with the feedline between the ground plane and the patch element. | 03-05-2009 |
20090058564 | TM Mode Evanescent Waveguide Filter - Waveguide filters utilizing the TM modes in an evanescent waveguide are provided. The Q of such filters surpasses any evanescent, dual and triple mode filters in propagating or evanescent waveguides. The waveguide filter in accordance with the present invention features a small size, as well as ease and simplicity in its manufacture when compared with conventional filters. Filters of exceptionally high Q and very low loss, when compared to conventional filters, can be obtained by employing TM modes in an evanescent waveguide. The TM mode evanescent filter has a higher Q than either the evanescent TE mode standard filter of a single mode propagating waveguide (TM or TE) or even the dual or triple mode filters in evanescent or propagating waveguides. | 03-05-2009 |