Abstract: A dual-polarized radiating element is formed from two orthogonally oriented monopole radiators disposed on a dielectric substrate. An RF image plane placed orthogonally to the two monopole radiators presents a balanced excitation for element impedance optimization that allows for operation over multiple octave bandwidths with a physically compact device. The dual-polarized radiating element provides a broad field-of-view (FOV) as a stand alone radiator and may be used in a phased array.

Abstract: A phased array antenna includes a substrate, and multiple radiating elements conformally mounted as micro-strip on the substrate. Each of the radiating elements is of a triangular shape, and four of the radiating elements are arranged to form a crossed bowtie cloverleaf radiator. In addition, the four radiating elements form two pairs of radiating elements, and the two pairs of radiating elements are orthogonal to each other. The radiating elements are disposed on a front surface of the substrate, and a RF center conductor is orthogonally oriented toward a rear surface of the substrate and connected to one of the radiating elements for feeding a RF signal to the one radiating element.

Abstract: A phased array antenna includes a substrate, and multiple radiating elements conformally mounted as micro-strip on the substrate. Each of the radiating elements is of a triangular shape, and four of the radiating elements are arranged to form a crossed bowtie cloverleaf radiator. In addition, the four radiating elements form two pairs of radiating elements, and the two pairs of radiating elements are orthogonal to each other. The radiating elements are disposed on a front surface of the substrate, and a RF center conductor is orthogonally oriented toward a rear surface of the substrate and connected to one of the radiating elements for feeding a RF signal to the one radiating element.

Abstract: A radio frequency transmitting and receiving module having a support housing that has a hexagonal face member mounted to the support housing. This face member has an antenna for transmitting and receiving radio frequency signals. Mounted within the support housing is circuitry for (a) conducting radio frequency signals to the antenna for transmission by the antenna, and (b) conducting radio frequency signals received by the antenna from the antenna for processing. Such a module, functioning as a hexagonal power unit core, can be fixed in a honeycomb cellular array employing “plug and play” assembly techniques.

Abstract: A phased array antenna includes a plurality of radiating elements arranged as orthogonal pairs in a herringbone pattern. Each radiating element includes multiple microstrips disposed conformally on a planar substrate. Each radiating element includes a dipole formed as a pair of dipole microstrips extending from a pair of launch points. Each dipole microstrip extends between one launch point of the pair of launch points and a top loading microstrip, which provides a capacitive load to the dipole. The top loading microstrip extends between parallel microstrips, which provide an additional capacitive load to the dipole.

Abstract: An antenna device includes a substrate, and a radiating element disposed on the substrate. The radiating element has two spiral arms unfurling in an Archimedean progression and terminating in a logarithmic progression. The substrate is formed from a dielectric material and includes multiple perforations for providing passage of coolant through the substrate. The radiating element is disposed on a front surface of the substrate, and an enclosure is formed on a rear surface of the substrate to provide a reflective cavity for reflecting radiation to the front surface of the substrate. The enclosure includes a hexagonal perimeter formed by a wall. The antenna device may be used as an element in a planar phased array.

Abstract: A dual-polarized radiator for a phased array antenna includes two planar microstrip notch elements that interlock and are perpendicular to each other having their phase centers coincident to provide advantageous operational characteristics when the elements are used to form a wide bandwidth, wide scan angle phased array antenna.

Abstract: A dual-polarized radiator for a phased array antenna includes two planar microstrip notch elements that interlock and are perpendicular to each other having their phase centers coincident to provide advantageous operational characteristics when the elements are used to form a wide bandwidth, wide scan angle phased array antenna.

Abstract: A towed antenna system employs drop-type dispensing for rapid deployment of a towed element on the end of a cable. The cable has an elastic central conductor, preferably of stranded stainless steel, which stretches to absorb the high tension of the towed element on the cable at the end of payout. The other end of the cable is anchored by a mounting portion in the launcher. A signal is fed from a coaxial signal conductor to the central conductor of the cable by a right-angle feed to a conductive sleeve on the central conductor, in order to avoid placing stress from the cable on the coaxial signal conductor.

Abstract: An antenna including a plurality of radiating elements disposed in mutually orthogonal pairs arranged in a predetermined pattern to radiate and receive RF signals over multi-octave frequency bands; and divergent lens means to provide stability for the predetermined pattern of radiating elements.

Abstract: A dual mode microwave vector controller apparatus is disclosed for controlling amplitude and phase characteristics of RF signals. A first set of phase shifting integrated circuit chips (PSICs) is disposed on a semiconductor substrate, each PSIC having an input port for receiving an RF signal and an output port for transmitting amplitude and phase modulated RF signals. A second set of PSICs is disposed on a semiconductor substrate, each PSIC having an input port for receiving an RF signal and an output port for transmitting amplitude and phase modulated RF signals. A first reciprocal planar magic tee integrated circuit chip (RPMT) is disposed on a semiconductor substrate and sandwichedly coupled between the first and second sets of PSICs, having input ports for receiving RF input signals from one set of PSICs and having output ports for transmitting output RF signals corresponding to the sum and difference of the RF input signals to the other set of PSICs.

Abstract: A dual-polarization radiating element wherein the phase centers of its constituent radiating elements substantially coincide to provide advantageous operation when the inventive dual-polarization radiating elements are utilized to form wide bandwidth, wide scan-angle, phased array antennas. An inventive dual-polarization radiating element is formed from a substantially planar notch radiating element; a substantially planar dipole radiating element which is interlocked with, and disposed in a plane which is substantially orthogonal to, the notch radiating element; and a structural absorber which is affixed to the notch radiating element and the dipole radiating element.

Abstract: Polarization adaptive active aperture system includes a receive polarimeter: (a) for determining the polarization parameters of a free space incoming RF signal and (b) for sampling and determining the polarization parameters of a transmitted RF signal which is generated by a transmit polarimeter. The polarization parameters determined by the receiving polarimeter as a result of sampling the signal generated by the transmit polarimeter are used to adaptively alter the output generated by the transmit polarimeter until that output has polarization parameters which match the polarization parameters of the free space incoming RF signal.

Abstract: An arrangement for testing the performance of an electronic system utilizing a phased array antenna as its principal radiator into a predetermined sector of space includes, as one of its main components, an enclosure which bounds a miniature anechoic chamber located in the near-field region of the antenna array during the performance of a testing operation and lined with material that absorbs free space electromagnetic radiation. The enclosure has an opening that is aligned with the phased array antenna the performance of which is being tested. Two dual-polarized testing horn antennas are situated at a wall of the enclosure that is opposite to the wall provided with the opening. Electrical signals received from the horn antennas and representative of the near-field electromagnetic radiation emitted by the phased array antenna are supplied to an evaluating circuit which gives indication of the performance of the electronic system of the phased array antenna.