| Patent Number |
Title Of Patent |
Date Issued |
| 5910754 |
Reduced height waveguide tuner for impedance matching |
June 8, 1999 |
| A slotted line tuner, also capable of operation as a fully automated tuner, to provide arbitrary termination in high frequency waveguide media for use with frequencies of interest between 1 and 1000 GHz is disclosed. The electrical tuner is adapted to match the impedance of two waveguide |
| 5668442 |
Plasma-assisted tube with helical slow-wave structure |
September 16, 1997 |
| Microwave amplifiers are disclosed having a hollow helix slow-wave structure coupled directly to input and output waveguides. This helix-waveguide coupling structure couples the TEM mode of the helix to the TE10 mode of the rectangular waveguides and also defines ports communicating |
| 5525864 |
RF source including slow wave tube with lateral outlet ports |
June 11, 1996 |
| Multiple radio frequency (RF) outlet ports are provided along the side of a slow wave tube to establish a distributed RF output in response to the transmission of an e.sup.- beam through the tube. The tube has a periodically rippled inner surface, and the outlet ports are spaced along |
| 5399999 |
Wideband TM.sub.01 -to-TE.sub.11 circular waveguide mode convertor |
March 21, 1995 |
| The mode convertor employs two intermediate modes, a coaxial TEM and a rectangular waveguide TE.sub.10 mode, in the transition between the TM.sub.01 and TE.sub.11 circular waveguide modes. The coaxial line provides isolation while acting as a mode filter between the device input and |
| 5369367 |
Wideband coax-to-TM.sub.01 converter and testing system using the same |
November 29, 1994 |
| A wideband convertor for mode conversion between a TEM coaxial mode in coaxial line and the TM.sub.01 circular waveguide mode in circular waveguide. The convertor takes advantage of the somewhat similar electric field configurations of the two modes. To physically match the coaxial l |
| 5216433 |
Polarimetric antenna |
June 1, 1993 |
| A polarimetric antenna (20) comprises a length of circular waveguide (30) having a sidewall (32) with a cylindrical internal surface (34). The sidewall (32) has two longitudinal slots (38) that extend parallel to a longitudinal axis (36) of the waveguide (30) and are symmetrically po |
| 5013933 |
Bias circuit for solid state devices |
May 7, 1991 |
| A loadline bias circuit for biasing solid state devices operable at high frequencies is disclosed. The source impedance of the dc bias circuit is adjusted to influence the RF device characteristic, thereby creating a way to optimize the device performance. The bias circuit comprises a re |
| 4795993 |
Matched dual mode waveguide corner |
January 3, 1989 |
| A polarized, mitered corner (32) is constructed using a multiple surface reflector in a square waveguide corner. The multiple surface reflector (34) provides a mitered corner having one effective miter size for the E-plane mode and a different effective miter size for the H-plane mode |
| 4588963 |
Microwave power combiner with alternating diode modules |
May 13, 1986 |
| A solid state microwave power combiner is disclosed having a central combining cavity with a plurality of coaxial oscillator circuits disposed about and coupled to the cavity. The oscillator circuits are oriented such that their longitudinal axes are parallel with the central axis of the |
| 4429287 |
Coaxially coupled tunable oscillator using a ridge waveguide |
January 31, 1984 |
| A source of microwave-frequency electromagnetic energy of a specific desired frequency is generated by a device that utilizes a filter network to absorb energy of unwanted frequencies and couples energy of the desired frequency into a tunable ridge waveguide. The filter network is design |
| 4280112 |
Electrical coupler |
July 21, 1981 |
| An electrical coupler for transmitting high frequency electrical signals from a coaxial transmission to a microstrip transmission line. The coupler is adapted to match the characteristic impedance of the two media and the electromagnetic field patterns of the two media at the interfaces |
