Abstract: A power combiner includes a first substrate provided with a first microstrip line, a second substrate provided with a second microstrip line, and a hollow waveguide having a metal film on an inner wall of a hollow and coupled to the first microstrip line and the second microstrip line, the hollow waveguide combining a first electric power transmitted through the first microstrip line and a second electric power transmitted through the second microstrip line and transmitting a combined electric power.

Abstract: A microwave separated field reconstructed device includes: a microwave field reconstructed cavity, a first short circuit plane, a third waveguide flange and coupling windows, wherein connection ports are provided on four ends of the microwave field reconstructed cavity; the microwave field reconstructed cavity is provided with a first waveguide flange, and a second waveguide flange is provided one end of the microwave field reconstructed cavity perpendicular to the first waveguide flange; the first short circuit plane is connected to one end of the first waveguide flange away from the microwave field reconstructed cavity; a second short circuit plane is connected to one end of the second waveguide flange away from the microwave field reconstructed cavity. The input ports are distributed at two ends of the microwave field reconstructed cavity to introduce electric and magnetic fields.

Abstract: Microwave antenna systems include a parabolic reflector antenna and a dual-band feed assembly. The dual-band feed assembly includes a coaxial waveguide structure and a sub-reflector. The coaxial waveguide structure includes a central waveguide and an outer waveguide that circumferentially surrounds the central waveguide. The sub-reflector is mounted proximate the distal end of the coaxial waveguide structure.

Abstract: Microwave antenna systems include a parabolic reflector antenna having a feed bore and a feed assembly. The feed assembly includes a coaxial waveguide structure that extends through the feed bore, a sub-reflector, and a first dielectric block that is positioned between the coaxial waveguide structure and the sub-reflector. The coaxial waveguide structure includes a central waveguide and an outer waveguide that circumferentially surrounds the central waveguide. One of the central waveguide and the outer waveguide extends further from the feed bore towards the sub-reflector than the other of the central waveguide and the outer waveguide.

Abstract: Provided is a focalized microwave plasma reactor. The reactor utilizes a cylindrical microwave resonant cavity of the quasi-TM011 mode to focalize microwave power and to excite focalized microwave plasma for the processes of microwave plasma enhanced chemical vapour depositions.

Abstract: A device for concentrating an electromagnetic wave includes a waveguide array that includes a central waveguide having a first refractive index and a central axis and feeder waveguides disposed around the central waveguide. Each feeder waveguide has a second refractive index. The waveguide array also includes a support structure coupled to the waveguide arrays and configured to, in a deployed configuration, retain the feeder waveguides of the waveguide array in a substantially symmetric arrangement with respect to the central waveguide to enable concentration of an electromagnetic wave of a particular wavelength in the central waveguide via electromagnetic coupling of the central waveguide with each of the feeder waveguides, with the respective axis of each feeder waveguide oriented substantially parallel to the central axis of the central waveguide and with each feeder waveguide spaced apart from the central waveguide by a distance that is based on the particular wavelength.

Abstract: An improved system for simplifying a complex waveguide network in a satellite system is described herein. A waveguide network device may be configured with at least two housing portions attached together. This enables the waveguide network device to receive an arbitrary number of waveguide routes and output the routes in any configuration, effectively simplifying the overall waveguide network architecture.

Abstract: The present disclosure provides systems and methods associated with mode conversion for electromagnetic field modification. A mode converting structure (holographic metamaterial) is formed with a distribution of dielectric constants chosen to convert an electromagnetic radiation pattern from a first mode to a second mode to attain a target electromagnetic radiation pattern that is different from the input electromagnetic radiation pattern. A solution to a holographic equation provides a sufficiently accurate approximation of a distribution of dielectric constants that can be used to form a mode converting device for use with one or more transmission lines, such as waveguides. One or more optimization algorithms can be used to improve the efficiency of the mode conversion.

Abstract: Conduit structures for redirecting extremely high frequency (EHF) signals are disclosed herein. The conduit structures discussed herein are designed to re-direct EHF or RF signal energy from a first signal path to a second signal path. The conduit structures according to embodiments discussed herein can re-direct the RF signal energy while simultaneously adhering to specified signaling characteristic of the RF signal and minimizing stray RF signal radiation within a device to support device-to-device contactless communications.

Abstract: According to an embodiment of the present invention, there is provided a radome, including a cover part configured to cover a printed circuit board (PCB) on which a plurality of antenna arrays and an integrated circuit (IC) chip connected to the plurality of antenna arrays are formed, and a plurality of projection parts on an inner side of the cover part opposite to the PCB.

Abstract: A novel miniaturized horizontal split-wave orthomode transducer includes a common channel portion, a first polarized channel portion and a second polarized channel portion, and the centers of the openings of the first polarized channel and the second polarized channel are coaxially and respectively arranged on two opposite sides of the common channel portion to save the bend and extended structure at the rear end of the horizontal split-wave orthomode transducer and also save the occupied space since there is no need to guide signals in one of the polarization directions to the rear and return the signals, so as to further achieve the effects of improving the flexibility of installing the transducer, providing a good isolation between electromagnetic signals in different polarization directions and preventing the interference occurred between the electromagnetic signals.

Abstract: Various embodiments are described that relate to patch antenna elements and parasitic feed pads. A patch antenna element can have a resistance and reactance. The resistance can be desirable while the reactance can be undesirable. To counteract the reactance, a parasitic feed pad can be placed near the patch antenna element and the parasitic feed pad produces a capacitance. The capacitance balances out the reactance to cancel out one another. When two patch antenna elements and two parasitic feed elements are employed in one antenna stack, the stack antenna can function as a dual band antenna.

Abstract: A dual polarized waveguide device includes a first waveguide that defines a first linear signal propagation path, a second waveguide that defines a second linear signal propagation path that is parallel to the first linear signal propagation path, and a polarization selective coupling interface coupling the first and second waveguides, the polarization selective coupling interface being configured to enable horizontally polarized signals to pass between the first and second linear propagation paths and prevent vertically polarized signals from passing between the first and second linear propagation paths.

Abstract: Aspects of the subject disclosure may include, generating, by a first hollow waveguide coupled to a first dielectric coupler, a first electromagnetic wave that couples onto a transmission medium, generating, by a second hollow waveguide coupled to a second dielectric coupler, a second electromagnetic wave that couples onto the transmission medium, combining the first electromagnetic wave and the second electromagnetic wave combine to form a combined electromagnetic wave that propagates along the transmission medium without requiring an electrical return path, and adjusting a first phase of the first electromagnetic wave, a second phase of the second electromagnetic wave, or both to adjust a wave mode of the combined electromagnetic wave. Other embodiments are disclosed.

Abstract: A waveguide-to-parallel-plate twist transition includes at least one waveguide-to-parallel plate twist transition element comprising an input port comprising an input waveguide portion, the input waveguide portion configured to orient an E-field of an electromagnetic wave along a first plane, and an output port comprising a multi-mode parallel plate portion, the multi-mode parallel plate portion configured to orient an E-field of an electromagnetic wave along a second plane, wherein an angle of orientation of the second plane is different from an angle of orientation of the first plane.

Abstract: A vehicle having a communication system is disclosed. The system includes two electrical couplings, coupled by way of a rotary joint. Each electrical coupling includes an interface waveguide configured to couple to external signals. Each electrical coupling also includes a waveguide section configured to propagate electromagnetic signals between the interface waveguide and the rotary joint. Additionally, the rotary joint is configured to allow one electrical coupling to rotate with respect to the other electrical coupling. An axis of rotation of the rotary joint is defined by a center of a portion of the waveguides. Yet further, the rotary joint allows electromagnetic energy to propagate between the waveguides of the electrical couplings.

Abstract: An improved system for simplifying a complex waveguide network in a satellite system is described herein. A waveguide network device may be configured with at least two housing portions attached together. This enables the waveguide network device to receive an arbitrary number of waveguide routes and output the routes in any configuration, effectively simplifying the overall waveguide network architecture.

Abstract: Disclosed is a switchable transmit and receive phased array antenna (“STRPAA”). As an example, the STRPAA may include a housing, a multilayer printed wiring board (“MLPWB”) within the housing having a top surface and a bottom surface, a plurality of radiating elements located on the top surface of the MLPWB, and a plurality of transmit and receive (“T/R”) modules attached to the bottom surface of the MLPWB. The STRPAA may also include a plurality of vias, wherein each via, of the plurality of vias, passes through the MLPWB and is configured as a signal path between a T/R module, of the plurality of T/R modules, on the bottom surface of the MLPWB and a radiating element, of the plurality of radiating elements, located on the top surface of the MLPWB opposite the T/R module.

Abstract: Conduit structures for redirecting extremely high frequency (EHF) signals are disclosed herein. The conduit structures discussed herein are designed to re-direct EHF or RF signal energy from a first signal path to a second signal path. The conduit structures according to embodiments discussed herein can re-direct the RF signal energy while simultaneously adhering to specified signaling characteristic of the RF signal and minimizing stray RF signal radiation within a device to support device-to-device contactless communications.

Abstract: An antenna array system can include a plurality of sheet metal structures arranged substantially parallel to one another. Each sheet metal structure can include a row of antenna elements and the plurality of sheet metal structures can form an array of antenna elements. The antenna array system can include a plurality of printed circuit boards (PCBs) each of which is mechanically and electrically coupled to a respective sheet metal structure. Each sheet metal structure extends beyond the PCB to which it is mechanically coupled. The antenna array system can include at least one electromagnetic shielding structure configured to electromagnetically shield one or more circuit components from the array of antenna elements. The antenna array system can also include one or more alignment structures configured to provide mechanical rigidity to the array of antenna elements and to allow for spacing between pairs of adjacent sheet metal structures.

Abstract: Aspects of the subject disclosure may include, generating, by a first hollow waveguide coupled to a first dielectric coupler, a first electromagnetic wave that couples onto a transmission medium, generating, by a second hollow waveguide coupled to a second dielectric coupler, a second electromagnetic wave that couples onto the transmission medium, combining the first electromagnetic wave and the second electromagnetic wave combine to form a combined electromagnetic wave that propagates along the transmission medium without requiring an electrical return path, and adjusting a first phase of the first electromagnetic wave, a second phase of the second electromagnetic wave, or both to adjust a wave mode of the combined electromagnetic wave. Other embodiments are disclosed.

Abstract: Various embodiments are described that relate to a patch antenna. Portions of a patch antenna, such as a patch antenna element and a probe feed wire can produce an impedance that is undesirable. To compensate for this, a parasitic feed pad can be aligned with the patch antenna element to create a capacitor. This capacitor produces a capacitance that negates the impedance. It can be preferred for the capacitance to be such that there is no excess capacitance and no excess impedance.

Abstract: The present invention is a dual Ka-band, compact, high efficiency CP antenna cluster with dual band compact diplexers-polarizers that can be used as a basic building block for mobile satellite antenna arrays that require minimal dimensions and high efficiency.

Abstract: Aspects of the subject disclosure may include, generating, a first hollow waveguide that facilitates coupling, via the first dielectric coupler, a first electromagnetic wave onto a transmission medium, and a second hollow waveguide that facilitates coupling, via the second dielectric coupler, a second electromagnetic wave onto the transmission medium, where the first electromagnetic wave and the second electromagnetic wave combine to form a combined electromagnetic wave that propagates along the transmission medium without requiring an electrical return path, and where the first dielectric coupler has an adjustable length that facilitates an adjustment of a wave mode of the combined electromagnetic wave. Other embodiments are disclosed.

Abstract: A waveguide type power combining/dividing unit W includes a plurality of rectangular waveguides 1 for TE10 mode disposed in a radial pattern, a circular waveguide 2 for TM01 mode disposed at a center of the radial pattern, in which one ends of the plurality of the rectangular waveguides 1 are connected to a side surface of one end of the circular waveguide.

Abstract: A power combiner/divider having a front end and a rear end and including a stepped main center conductor defining an axis and having portions with different outer diameters; an input connector having a center conductor, adapted to be coupled to a signal source, electrically coupled to the main conductor and having an axis aligned with the main conductor axis; a plurality of output connectors having respective axes that are perpendicular to the main conductor axis, the output connectors being radially spaced apart relative to the main conductor, the output connectors having center conductors; a plurality of nested cylinders proximate the front end and arranged with gaps defining at least three gaps providing coaxial transmission lines; and a plurality of nested cylinders proximate the rear end, one of which having apertures perpendicular to the main conductor axis receiving the center conductors of the output connectors, the nested cylinders proximate the rear end defining at least three gaps.

Abstract: A coaxial to waveguide transition includes a first rigid portion comprising an inverted hollow cone, a second rigid portion comprising a hollow tube, and a third rigid portion comprising a hollow cone. The first rigid portion has a first end and a second end, and tapers inward at a first angle from its first end towards its second end. The second rigid portion has a first end and a second end, with the first end being partially disposed within the second end of the first rigid portion. The third rigid portion has a first end and a second end, with the first end of the third rigid portion being partially disposed within the second end of the second rigid portion. The third rigid portion tapers outward at a second angle from its first end towards its second end, where the second angle is less than the first angle.

Abstract: In an example embodiment, a waveguide device comprises: a first common waveguide; a polarizer section, the polarizer section including a conductive septum dividing the first common waveguide into a first divided waveguide portion and a second waveguide divided portion; a second waveguide coupled to the first divided waveguide portion of the polarizer section; a third waveguide coupled to the second divided waveguide portion of the polarizer section; and a dielectric insert. The dielectric insert includes a first dielectric portion partially filling the polarizer section. The conductive septum and the dielectric portion convert a signal between a polarized state in the first common waveguide and a first polarization component in the second waveguide and a second polarization component in the third waveguide.

Abstract: A microwave heating system configured for heating a plurality of articles is provided. One or more of the microwave launchers can be offset slightly, such that the microwave energy introduced into the heating chamber is discharged at a launch tilt angle of at least 2°. Additionally, each launcher can include a microwave-transparent window disposed between the microwave chamber and the one or more launch openings and at least 50 percent of the chamber-side surface of the window can be oriented at an angle of at least 2° from the horizontal.

Abstract: A dual-mode feed network for an antenna array or combination antenna is provided. Two transmission line structures propagate signals according to two different electromagnetic propagation modes, such as TE, TM, TEM and quasi TEM modes. The two transmission line structures are operatively coupled to different components of the antenna array. One transmission line structure may be a stripline or microstrip, and the other transmission line structure may be a waveguide such as a Substrate Integrated Waveguide. Both transmission line structures may branch to reach multiple elements of the antenna array. The transmission lines may share common features, for example by embedding the stripline within the waveguide.

Abstract: A coupling clamp-type pulse injection apparatus, which can couple a high-voltage wideband pulse having a peak voltage of several tens of kV and having a rising time of several hundreds of ps or less to a cable without causing dielectric breakdown and a 50 ohm impedance mismatch, is provided. The pulse injection apparatus includes an input connector, an output connector, and a main body including an inner plate connected at a first end thereof to the input connector and at a second end thereof to the output connector, and a coupling plate connected to the inner plate and configured to fix a cable to the inner plate and to couple a high-power electromagnetic pulse input through the input connector to the cable.

Abstract: Disclosed is a phased-array antenna. The phased-array antenna includes a plurality of element antennas having feed lines formed thereon, antenna modules configured to extend and be disposed in longitudinal directions of the element antennas and independently connected to one ends of the plurality of element antennas, respectively, and a signal distribution module disposed in a direction perpendicular to the antenna modules, having one side surfaces being perpendicularly connected to each of the antenna modules, and configured to distribute an input signal to the corresponding antenna modules through connection pins whose one sides are respectively connected to the antenna modules.

Abstract: An electromagnetic wave propagation device includes multiple planar propagation media each formed by laminating at least one planar conductor and at least one planar dielectric, multiple transceivers for transmitting and receiving information among electronic apparatuses, and a first interface for transmitting and receiving the electromagnetic wave between the transceivers and the planar propagation media. Planar dielectric spacers are provided for isolating the multiple planar propagation media from one another. The planar propagation medium is disposed to have an overlapped part with at least the other of the planar propagation media so that an obverse face of the medium and a reverse face of the other medium are at least partially overlapped with each other. The planar conductor is provided with an electromagnetic wave linking unit at the overlapped part that transmits and receives the electromagnetic wave between the planar propagation media.

Abstract: There is provided a waveguide connecting structure, including first, second, third and fourth waveguides. A first coupling window at one of magnetic field planes of the third waveguide couples the first and third waveguides in such a manner that the electric field planes of both are in parallel. A second coupling window formed at one of the electric field planes of the third waveguide couples the second and third waveguides in such a manner that the electric field planes of the second waveguide is in parallel with the magnetic field planes of the first waveguide. A third coupling window formed at the other one of the electric field planes couples the fourth and third waveguides in such a manner that the electric field planes of the fourth waveguide is in parallel with the magnetic field planes of the first waveguide.

Abstract: Systems and methods for measuring wind speed and direction in clear air conditions using a wide band Doppler radar in accordance with embodiments of the invention are disclosed. In one embodiment of the invention, a wide band Doppler radar system includes an antenna assembly includes at least one transmit antenna and at least one receive antenna; a transceiver connected to the antenna assembly configured to transmit a radar beam includes a transmit signal on a Ka-band carrier frequency and receive a backscattered radar beam includes a carrier frequency that is frequency shifted relative to the transmitted Ka-band carrier frequency of the backscattered radar beam; a data acquisition system connected to the transceiver configured to estimate a wind velocity vector by calculating a Doppler shift between at least one transmitted radar beam and at least one received backscattered radar beam.

Abstract: A broadband building block portion is provided, which may be used to construct N-way multi-port combiners. The building block portion comprises a first feeding probe that receives a first input signal, a second feeding probe that receives a second input signal, a combining probe that combines the first and second input signals to output a combined signal, and a transmission line coupled to the first and second feeding probes.

Abstract: A wireless signal transmission device is provided. The wireless signal transmission device includes a reflective surface and a receiver. The reflective surface reflects a wireless signal. The receiver receives the wireless signal reflected. The receiver includes a receiver body, a wave guide, a transmission unit and a medium sheet. The wave guide includes an opening end and a connection end connected thereto. The transmission unit is disposed in the wave guide adjacent to the connection end for receiving the wireless signal. The medium sheet is disposed in the wave guide, wherein the medium sheet comprises a first section and a second section, the first section is adjacent to the transmission unit, the second section is adjacent to the opening end, the first section has a first dielectric constant, the second section has a second dielectric constant, and the first dielectric constant is smaller than the second dielectric constant.

Abstract: A phase shift device includes an input quadrature junction for receiving an input EM signal and extracting a first electromagnetic (EM) signal, a second EM signal, a third EM signal, and a fourth EM signal from the input EM signal. Four waveguide arms are operatively connected to the input quadrature junction for respectively conveying the first, second, third, and fourth EM signals therethrough. At least two of the waveguide arms shift the phase of EM signal conveyed therethrough such that two of the first, second, third, and fourth EM signals are phase shifted with respect to the other two of the first, second, third, and fourth EM signals. An output quadrature junction is operatively connected to the waveguide arms for combining the first, second, third, and fourth EM signals. Thus, polarization adjustment may be achieved through rotation of the phase shift device.

Abstract: An exemplary embodiment of the present invention provides an improved dielectric waveguide named electrical fiber. The electrical fiber with a metal cladding may isolate the interference of the signals in other wireless channels and adjacent electrical fibers, which typically causes band-limitation problem, for a smaller radiation loss and better signal guiding to lower the total transceiver power consumption as the transmit distance increases. Also, the electrical fiber may have frequency independent attenuation characteristics to enable high data rate transfer with little or even without any additional receiver-side compensation due to vertical coupling of the electrical fiber and an interconnection device.

Abstract: A signal transmission cable includes a multi-layer parallel transmission path, a single-layer parallel transmission path, and a single-layer/multi-layer conversion section. The multi-layer parallel transmission path includes two or more dielectric waveguides stacked in upper and lower directions. Each dielectric waveguide includes a dielectric layer formed of a dielectric substance, two conductive layers formed to sandwich the dielectric layer, and two quasi-conductive walls. The two quasi-conductive walls include a plurality of via-holes electrically connected to the two conductive layers. The dielectric waveguides are arranged sharing the conductive layers in contact in the upper and lower directions. The single-layer parallel transmission path includes the two or more dielectric waveguides arranged in left- and right-hand directions on the same dielectric layer and conductive layer.

Abstract: A power combiner/divider having a waveguide, a plurality of amplifiers disposed on a supporting structure, a plurality of probes, each one having a first end electrically coupled to an output of a corresponding one of the plurality of amplifiers and a second end projecting outwardly from the supporting structure and into the waveguide. The probes are disposed in a common region of the waveguide. The region has a common electric field maximum within the waveguide. A first portion of the probes proximate the sidewalls have lengths different from a second portion of the probes disposed in a region distal from the sidewalls of the waveguide. The waveguide is supported by the support structure. The power combiner is a monolithic microwave integrated circuit structure.

Abstract: A compact dual-polarization planar power splitter comprises at least four asymmetric orthomode transducers (OMTs) connected in an array suitable for being coupled in-phase to a dual orthogonal polarization feed source via two power distributors mounted perpendicularly in relation to one another, each power distributor comprising at least two lateral metal waveguides disposed parallel to one another, and a transverse metal waveguide coupled perpendicularly to the two lateral metal waveguides and four ends of the lateral waveguides coupled respectively to the four asymmetric OMTs.

Abstract: A power splitter comprises at least two mutually parallel lateral waveguides with rectangular cross-section and a transverse waveguide with rectangular cross-section comprising two opposite ends respectively connected to the two lateral waveguides. The two lateral waveguides are oriented along a direction Y and mounted flat with their large side parallel to a plane XY, the transverse waveguide is oriented along a direction X perpendicular to the direction Y and mounted edgewise with its small side parallel to the plane XY, and each lateral waveguide is coupled to the transverse waveguide by a tee coupler in the E-plane with embedded junction, the two ends of the transverse waveguide being respectively embedded in each lateral waveguide, at the centre of the said respective lateral waveguide.

Abstract: A power combiner/divider having a waveguide, a plurality of amplifiers disposed on a supporting structure, a plurality of probes, each one having a first end electrically coupled to an output of a corresponding one of the plurality of amplifiers and a second end projecting outwardly from the supporting structure and into the waveguide. The probes are disposed in a common region of the waveguide. The region has a common electric field maximum within the waveguide. A first portion of the probes proximate the sidewalls have lengths different from a second portion of the probes disposed in a region distal from the sidewalls of the waveguide. The waveguide is supported by the support structure. The power combiner is a monolithic microwave integrated circuit structure.

Abstract: A dielectric waveguide (DWG) has a longitudinal core member with a first dielectric constant value surrounded by a cladding with a cladding dielectric constant value that is lower than the first dielectric constant value. A first port of a signal divider is connected to receive a signal from the DWG. A second port and a third port are each configured to output a portion of the signal received on the first port, wherein the first and second port are approximately in line and the third port is at an angle to a line formed by the first port and the second port. The first port and second port have a core member with the first dielectric constant value, and the third port has a core member with a second dielectric constant value that is higher than the first dielectric constant value.

Abstract: An ortho-mode transducer may include a cylindrical common waveguide terminating in a common port, a rectangular vertical branch waveguide in-line with the cylindrical common waveguide and terminating in a vertical port, and a rectangular horizontal branch waveguide normal to the common waveguide and terminating in a horizontal port. The vertical branch waveguide may be configured to couple a first linearly polarized mode from the vertical port to the common waveguide. The horizontal branch waveguide may be configured to couple a second linearly polarized mode, orthogonal to the first linearly polarized mode, from the horizontal port to the common waveguide. A portion of the vertical branch waveguide may overlap a portion of the cylindrical common waveguide. A septum may span the vertical branch waveguide proximate to the overlapping portions of the vertical branch waveguide and the common waveguide. A rectangular symmetry cavity may be opposed to the horizontal branch waveguide.

Abstract: The present invention provides a dielectric waveguide input/output structure for connecting to a coaxial connector a plurality of dielectric waveguide resonators each comprising an approximately parallelepiped-shaped dielectric block, wherein the plurality of dielectric waveguide resonators include a first dielectric waveguide resonator and a second dielectric waveguide resonator each having an exterior coated with an electrically conductive film, except for a coupling window, wherein each of the coupling window is formed with a probe composed of an electrically conductive film, the probe having one end connected to a feeding point, and the other end connected to the electrically conductive film, and wherein the first dielectric waveguide resonator and the second dielectric waveguide resonator are arranged in such a manner that the one side surfaces thereof are located in opposed relation to each other.

Abstract: Apparatus is provided which allows for the receipt and/or transmission of data signals, and, for the received signals, for the subsequent separation of the same into at least two sets of data signals which are orthogonal and provide these sets of data signals to subsequent processing components, whilst maintaining the isolation between the first and second data signal sets. For the transmission of the data signals the first and second sets of data signals are initially separate and then combined into one data set to allow the same to be transmitted.

Abstract: A T-shaped waveguide tube with adjustability as between two outputs includes a T-shaped body, a T-shaped cover detachably mounted on the body, and a baffle. A number of pair of pillars can be mounted on a bottom board of the body. An energy entrance, a first energy output, and a second energy output are formed by the body, the cover, and the baffle. By installing the pillars in different configurations, wave energy from the energy entrance can be distributed equally or otherwise through the two outputs of the waveguide tube.

Abstract: Orthomode transducers (OMTs) and methods of fabricating OMTs are disclosed. According to disclosed embodiments, an OMT includes a housing defining an internal waveguide. The housing may be composed of a first cast housing member attached to a second cast housing member. The first housing member may include a first side of the waveguide that is cast into the first housing member. The second housing member may include a second side of the waveguide that is cast into the second housing member. A method of fabricating an OMT may include arranging at least one casting insert in at least one mold, casting the housing in the mold and casting a waveguide in the housing using the at least one casting insert. The disclosed devices and methods provide cost effective solutions for fabricating OMTs of various operating frequencies that share a substantially similar outer housing shape and size.