Matches 251 - 300 out of 629 < 1 2 3 4 5 6 7 8 9 10 11 12 13 >
Match Document Document Title
5945890 Ultra-wide bandwidth field stacking balun  
A balun structure is formed by stripline or square coaxial transmission ls and stacked dielectric substrates. The invention provides a technique for building a balun that maintaines low insertion...
5942903 Apparatus for EMC testing of electrical devices  
In an apparatus for EMC testing of electrical devices, conductors are arranged at opposite sides of a chamber of conductive material at a spacing from and parallel to the chamber walls. These...
5912598 Waveguide-to-microstrip transition for mmwave and MMIC applications  
A waveguide-to-microstrip transition package (30) for processing electromagnetic wave signals includes a waveguide (32) for directing the signals to the input of the waveguide (32). A substrate...
5898409 Broadband antenna element, and array using such elements  
A broadband horn-like, linearly polarized antenna element is driven from a microstrip line and a balun. The horn is skeletonized, and has no sides, and consequently operates in TEM mode for broad...
5892414 Dielectric waveguide power combiner  
A transmission medium consists of a dielectric waveguide shielded by a metal guide. The guide is particularly suitable for providing low insertion loss, convenient transfer of power from one such...
5889835 Method and system for testing a transmission line in a non-addressable network for continuity  
A method and system for testing the continuity of a transmission line in a non-addressable network. A method and system in a communications service environment are provided, the environment...
5886589 Balanced to unbalanced transmission line transformers  
A printed circuit balanced to unbalanced (balun) transformer. The balun includes strip circuitry having first, second and third conductors. The first conductor provides a primary inductor of the...
5880646 Compact balun network of doubled-back sections  
A balun network is provided having first and second conductor portions symmetric along a center line therebetween. A connecting conductor portion 130 couples ends of the first and second conductor...
5867072 Biphase modulator with balun design  
A double-balanced microwave biphase modulator circuit is provided with a first balun for transforming the unbalanced RF Input impedance to a balanced diode impedance and providing direct current...
5867073 Waveguide to transmission line transition  
A transition between a waveguide and transmission line is disclosed in which a probe portion of the transmission line extends into the waveguide to electrically field couple signals between the...
5861853 Current balanced balun network with selectable port impedances  
A half-wave balun network balanced for at least current is provided by a conductor section having contiguous conductor portions 130 and 140. A balanced port 110 is provided between ends of the...
5838212 High frequency transition arrangement  
In a high frequency transmission arrangement such as that used to deliver microwave energy from a magnetron to a waveguide, a ceramic probe is covered with a non-ceramic dielectric material such as...
5828273 Phase splitter for high data rate communication  
A phase splitter includes an input port coupled to receive a modulated carrier having a relatively wide bandwidth and has first and second output ports for supplying, respectively, first and second...
5821815 Miniature active conversion between slotline and coplanar waveguide  
An active device, such as a field effect transistor ("FET"), converts microwave signals between a slot transmission line ("slotline") and a coplanar waveguide ("CPW") In slotline-to-CPW conversion...
5818308 Coupled line element  
A coupled line element has a plurality of coupled lines equalized to each other in line length to set a phase difference between output signals within a desired range. The coupled lines are wound...
5812034 Waveguide mode-strip line mode converter utilizing fin-line antennas of one wavelength or less  
A fin-line antenna 51 comprises fins 51a and 51b and a fin-line antenna 52 comprises fins 52a and 52b. The fins 51b and 52b are integrated into one body and connected to a ground layer of a strip...
5812032 Stripline transition for twin toroid phase shifter  
A microwave transition consisting of a stripline member coupled to a pair of slot lines deposited on the outer surfaces of a pair of contiguous dielectric rib members. The stripline and one slot...
5808518 Printed guanella 1:4 balun  
A Guanella 1:4 balun is made capable of handling frequencies in the gigahertz range by printing its transmission lines on a microwave laminate. The resulting balun has a largest dimension...
5808519 Hermetically sealed millimeter-wave device  
A millimeter-wave device includes a pedestal having an upper surface; a microwave IC chip operating at a millimeter wave band, the chip being mounted on the upper surface of the pedestal; line...
5801599 RF waveguide to microstrip board transition including means for preventing electromagnetic leakage into the microstrip board  
An RF waveguide signal transition apparatus for minimizing leakage at RF frequency is described which consists of providing a plurality of plated through-holes (16) of blind holes in a circuit...
5796371 Outdoor converter for receiving satellite broadcast  
An outdoor satellite broadcast receiving converter including a waveguide into which a broadcast electric wave enters and in which the broadcast electric wave travels in an axial direction as a...
5793263 Waveguide-microstrip transmission line transition structure having an integral slot and antenna coupling arrangement  
A waveguide-microstrip transmission line transition structure is provided having a microstrip transmission line structure adapted for coupling to an open end of a waveguide. The microstrip...
5793338 Quadrifilar helix antenna and feed network  
A quadrifilar antenna is comprised of four radiators which, in the preferred embodiment, are etched onto a radiator portion of a microstrip substrate. The microstrip substrate is formed into a...
5789996 N-way RF power combiner/divider  
A combiner/divider is provided which includes a common output/input port and a plurality of N input/output ports and a plurality of N isolation ports. A 90° phase shifter interconnects each of the...
5786739 Integrated evanescent mode filter with adjustable attenuator  
A waveguide evanescent mode filter is integrated with a monolithic microwave integrated circuit (MMIC) by forming both the MMIC circuitry and the waveguide filter on a single substrate that forms a...
5781161 Waveguide and microstrip lines mode transformer and receiving converter comprising a polarization isolating conductor  
A mode transformer for a waveguide and microstrip lines capable of obtaining sufficient cross polarization isolation and a receiving converter comprising the same is provided. Transformers of...
5777527 Method and apparatus for coupling a differential signal to an unbalanced port  
A differential signal is coupled to an unbalanced port (116) from a balanced port (110) by receiving a first portion of a first phase of a differential signal at a first resonator (104) and...
5774093 Circuit arrangement for processing a first or a second high-frequency signal  
A description follows of a circuit arrangement for selectively processing a first or a second high-frequency signal, which guarantees a proper broadband separation of the high-frequency signals...
5770981 Composite microwave circuit module having a pseudo-waveguide structure  
A composite microwave circuit module includes a multilayer dielectric substrate, upper- and lower-surface grounds, an antenna pattern, a plurality of shield via holes, and a large number of first...
5760659 Microwave polariser  
A microwave polarizer particularly in a system for coupling energy between a waveguide and a transmission line. The polarizer reduces cross polarization by means of the probes being adjusted to an...
5757248 Arrangement for matching and tuning a surface acoustic wave filter utilizing adjustable microstrip lines  
A matching arrangement matches and turns the impedance of a high frequency surface acoustic wave (SAW) filter (3) to the characteristic impedance of an external system. The arrangement includes a...
5740528 Planar triply-balanced microstrip mixer  
A planar triply-balanced microstrip mixer for microwave and millimeter wave operation includes an RF port, and IF port and an LO port. The mixer is constructed on a single side of a two-sided...
5726664 End launched microstrip or stripline to waveguide transition with cavity backed slot fed by T-shaped microstrip line or stripline usable in a missile  
A low profile, compact microstrip-to-waveguide or stripline-to-waveguide transition. The end of the waveguide is terminated in a cavity backed slot defined in a groundplane formed on a dielectric...
5708401 Waveguide coaxial converter including susceptance matching means  
Disclosed is a waveguide coaxial converter in the form of a rectangular tube, open at an end opposite a closed end, and in which a high-frequency signal propagates along a central axis...
5705960 Balanced-to-unbalanced converting circuit  
A balanced-to-unbalanced converting circuit in which balanced-to-unbalanced converters are formed by a stripline in such a manner as to include a copper foil pattern which is formed on an inner or...
5697088 Balun transformer  
First and second transmission line couplers (202, 204) one being configured in an asymmetrical open circuit configuration, the other being configured in an asymmetrical short circuit configuration,...
5691672 Magnetic coupling device between a TEM line main conductor and a waveguide forming a λg/2 resonator  
A magnetic device couples a main conductor of a TEM line and a waveguide forming a λg/2 resonator and procuring the propagation of an electromagnetic wave. The main conductor is fixed to a wall of...
5678210 Method and apparatus of coupling a transmitter to a waveguide in a remote ground terminal  
A remote ground terminal for transmitting a modulated data signal to a satellite. The remote ground terminal includes an outdoor unit comprising an input port for receiving a modulated data signal,...
5644272 High frequency balun provided in a multilayer substrate  
Baluns according to the present invention use both distributed and discrete elements connected together in a multilayer dielectric structure. As distributed elements, coupled striplines are...
5628057 Multi-port radio frequency signal transformation network  
A transformation network is provided capable of interfacing between an unbalanced port (110) and a plurality of differently phased balanced ports (120, 130). A balun (165) has a choke (140) and...
5610563 Slot line to CPW circuit structure  
A means of connecting a plurality of essentially identical active devices is presented for the purpose of multifunction and multiple function operation. These devices, mounted on a chip, are...
5600286 End-on transmission line-to-waveguide transition  
A transmission line-to-waveguide transition that includes a microstrip impedance transformer for matching the impedance of an input transmission line to that of a flared slotline is disclosed. The...
5594393 Microwave line structure  
A microwave line structure which has a first conducting track applied onto a substrate and a second conducting track which extends, supported on posts, at a distance above the first conducting...
5585768 Electromagnetic wave conversion device for receiving first and second signal components  
The present invention discloses an electromagnetic wave transmission device comprising separately installed metal pins and a printed pin on a printed circuit board. The device is used to receive...
5572172 180° power divider for a helix antenna  
A 180° power divider accepts an input signal and splits it into two output signals that are equal in amplitude and differ in phase by 180°. In a first region, an unbalanced input signal travels...
5565881 Balun apparatus including impedance transformer having transformation length  
An electrical connection between a balanced circuit, such as a radio receiver and an unbalanced circuit, such as an antenna requires a balun. In a small electronic device such as a radiotelephone,...
5559480 Stripline-to-waveguide transition  
A stripline to waveguide transition device efficiently and simply converts he TEM stripline mode to the TE 10 rectangular waveguide mode. A stripline is inserted longitudinally, end-to-end, into a...
5539361 Electromagnetic wave transfer  
Method and apparatus for transiting from one form of electromagnetic wave guidance to another by increasingly or reducingly guiding an electromagnetic wave to or from a conductor serving as a...
5528074 Microwave semiconductor device and integrated circuit including microwave semiconductor devices  
A semiconductor device includes a substrate having a microwave semiconductor element, a microwave transmission line disposed on the substrate and electrically connected to the microwave...
5523728 Microstrip DC-to-GHZ field stacking balun  
A wideband (DC to GHz) PC-board Balun that is disclosed. The balun mainta low insertion loss and good balance for ultra wide band (UWB) applications such as impulse radar. The balun structure is...
Matches 251 - 300 out of 629 < 1 2 3 4 5 6 7 8 9 10 11 12 13 >