公开(公告)号：WO1984003395A1

公开(公告)日：1984-08-30

申请号：PCT/US1983001991

申请日：1983-12-16

Applicant: HUGHES AIRCRAFT COMPANY

Inventor： HUGHES AIRCRAFT COMPANY ,  HUDSPETH, Thomas ,  BASIL, Richard, V., Jr. ,  KEELING, Harmon, H.

IPC: H01P05/18

CPC classification number: H01P5/183

Abstract: A transverse electromagnetic mode hybrid coupler (10) for coaxial lines is formed within a metal plate (12) by milling out channels (16) of square cross-section. The walls of the channels serve as outer conductors; inner conductors (18, 19) of square cross-section are positioned within the channels. A diagonally disposed separator (34) includes a window and crosses the intersection of the coupler ports (21, 22, 23 and 24). The central conductors of the respective coaxial lines are joined by diagonally disposed segments of inner conductor such that each pair of coaxial lines is so joined. Each pair of lines provides a pair of ports. The line segments are spaced apart by a spring-loaded separator for rigidly maintaining a coupling distance. This design provides improved impedance matching and reliable coupling in both amplitude and phase over a wide spectral band.

Abstract translation: 通过铣削具有正方形横截面的通道（16），在金属板（12）内形成用于同轴线的横向电磁模式混合耦合器（10）。 通道的墙壁用作外导体; 正方形横截面的内导体（18,19）位于通道内。 对角设置的分离器（34）包括窗口并且穿过联接器端口（21,22,23和24）的交叉。 各个同轴线的中心导体通过内部导体的对角设置的段连接，使得每对同轴线如此连接。 每对线路提供一对端口。 线段由弹簧加载的分离器间隔开，用于刚性地保持联接距离。 该设计提供了在宽光谱带上的幅度和相位上的改进的阻抗匹配和可靠的耦合。

公开(公告)号：WO1988010013A2

公开(公告)日：1988-12-15

申请号：PCT/US1988001464

申请日：1988-05-06

Applicant: HUGHES AIRCRAFT COMPANY

Inventor： HUGHES AIRCRAFT COMPANY ,  HUDSPETH, Thomas

IPC: H01P01/231

CPC classification number: H01P1/2138 ,  H01P1/2082

Abstract: A microwave multiplexer (20) has a set of independently tunable signal channels coupled to a common waveguide (22). Each of the channels has input and output 3dB couplers (40, 106) which are joined by cylindrical filters (32, 34) carrying circularly polarized waves. Both TE and TM waves are propagated within a plurality of resonant cavities (36, 38) within each of the filters (32, 34). Coupling between the cavities (36, 38) is provided by an array of slots (88) and an array of probes (90) wherein the slots (88) couple TE waves and the probes (90) couple TM waves. Adjustment of the slots (88) and the probes (90) provides for independent coupling coefficients for the two propagation modes. A set of coaxial line probe structures (60, 62, and 120, 122) connect betweeen the input and output couplers to end cavities of a filter for the launching of TM waves, there being discs (140) in the end cavities adjacent the probes for converting energy of a TM wave to a TE wave, thereby providing both the TM and the TE wave propagation. There results a greater versatility in the coupling allowing for greater compaction of a signal channel with reduced weight and bulk to the multiplexer.

公开(公告)号：WO1984003393A1

公开(公告)日：1984-08-30

申请号：PCT/US1983001972

申请日：1983-12-12

Applicant: HUGHES AIRCRAFT COMPANY

Inventor： HUGHES AIRCRAFT COMPANY ,  HUDSPETH, Thomas ,  KEELING, Harmon, H.

IPC: H01P03/06

CPC classification number: H01P3/06

Abstract: A crossover (22) for a microwave circuit (20) constructed within a plate (30) includes intersecting square-shaped coaxial transmission lines (25, 26), each of which is formed by machining channels (28) within the plate, with square-shaped central rods (34) disposed along the axes of the channels and insulated from the side walls thereof. At the intersection, reduced weight segments (44, not shown) of the rods pass, respectively, over and under a centrally located septum (36). The crossover segment of the line (26) passes between the septum and a cover (not shown) to provide the structure of a coaxial line between the cover and the septum. Matching structures in the form of a miter at the end of each center conductor reduce reflection at the junction of the segment at the septum with the balance of the transmission line. The forgoing segments are approximately one-quarter wavelength of the microwave frequency.

公开(公告)号：WO1988010025A1

公开(公告)日：1988-12-15

申请号：PCT/US1988001463

申请日：1988-05-06

Applicant: HUGHES AIRCRAFT COMPANY

Inventor： HUGHES AIRCRAFT COMPANY ,  HUDSPETH, Thomas ,  KAPLAN, David, S. ,  ROSEN, Harold, A.

IPC: H03F01/02

CPC classification number: H03F1/0244 ,  H03F3/2178

Abstract: A high efficiency envelope amplifier (20) is disclosed. The invention includes a power supply (24), a comparator (60), and several switches (26-38). The power supply (24) is capable of providing multiple outputs. The comparator (60) measures the amplitude of an input signal against one of several threshold levels. When the input signal is within a predetermined range, a selected power supply output is switched onto the output path. Since the present invention incrementally switches small amounts of power, switching losses are substantially mitigated.

公开(公告)号：WO1984003394A1

公开(公告)日：1984-08-30

申请号：PCT/US1984000025

申请日：1984-01-09

Applicant: HUGHES AIRCRAFT COMPANY

Inventor： HUGHES AIRCRAFT COMPANY ,  HUDSPETH, Thomas ,  KEELING, Harmon, H.

IPC: H01P05/103

CPC classification number: H01P5/103

Abstract: An adapter (40) for connecting a waveguide (42) to a microwave circuit (20) of coaxial transmission lines (26) which is formed by milling out a channel (24) with rectangular or square cross-section. The channel walls serve as the outer conductor of the coaxial line, whereas a rod (28) of rectangular or square cross-section serves as an inner conductor. An aperture (56) is provided in an outer wall of the coaxial line. A stem (58) connects with the inner conductor and passes through the aperture. The waveguide is positioned with its propagation axis parallel to the stem, the waveguide enclosing the stem and being secured to the outer walls of the coaxial lines. The stem is placed near the inner wall of the waveguide to support a transverse electromagnetic wave. A dipole element (60) of planar shape extends transversely of the waveguide and is secured at an edge thereof to the terminus of the stem. The dipole element launches a propagating mode of wave within the waveguide while receiving its energization from the transverse electromagnetic wave propagating along the coaxial line and along the stem.

公开(公告)号：WO1985005228A1

公开(公告)日：1985-11-21

申请号：PCT/US1984001377

申请日：1984-08-27

Applicant: HUGHES AIRCRAFT COMPANY

Inventor： HUGHES AIRCRAFT COMPANY ,  HUDSPETH, Thomas ,  ROSS, Barry, S.

IPC: H01P01/12

CPC classification number: H01P1/125

Abstract: A switch (11) for a square coaxial network includes a lower housing (13), a rotor assembly (21), alternative transmission lines (19), and an upper housing (15) with a main transmission line (17). The rotor assembly includes a rotor (23) for selectively coupling the main transmission line to a selected alternative transmission line. The rotor is coadapted with each transmission line for resonant coupling therewith. A conductive shield (29) rotates with the rotor and isolates it from the unselected alternative transmission lines. A low-friction dielectric guide (25) helps provide proper spacing and coupling of the rotor and the square center conductor (35) of the selected alternative transmission line. A low-friction dielectric bushing (27) serves a similar function for the rotor and the center conductor (33) of the main transmission line.

公开(公告)号：WO1984003360A1

公开(公告)日：1984-08-30

申请号：PCT/US1983002068

申请日：1983-12-28

Applicant: HUGHES AIRCRAFT COMPANY

Inventor： HUGHES AIRCRAFT COMPANY ,  HUDSPETH, Thomas ,  ROSEN, Harold, A. ,  STEINBERG, Fritz

IPC: G01S03/32

CPC classification number: G01S3/325 ,  H04J15/00

Abstract: A modulator system (30) for converting a three-channel input microwave signal to a single-channel output microwave signal is formed of two (upper and lower) microwave sections which are joined together by a hybrid divider (94) at their inputs and by a hybrid combiner (96) at their outputs. Each of the microwave sections includes a pair of couplers (82 and 84, 88 and 90) which are joined by a Faraday rotator (86, 92). First and second microwave input signals (48, 52) are applied to a first port of the input coupler (82, 88) in each of these sections. A third microwave signal (50) is directed by the hybrid divider (94) to a second imput port in the input couplers (82, 84) of each of the microwave sections. Polarization of the third signal is vertical and is maintained through the two sections. Polarization of the first and second signals is horizontal and is maintained through the two sections. With activation of the rotator, a shift in polarization occurs resulting in appearence of the signals in both the horizontal and vertical components of an output coupler in each of the sections. The vertical component of the output couplers in each of the sections is combined by the hybrid combiner to produce the single-channel microwave signal (54). Synchronous detectors are utilized for subsequent extraction of the first and second input signals, the synchronous detectors and the Faraday rotators being driven by common sources of modulation signals wherein the rotator in one section is modulated at a rate different from the rotator in the second section.

公开(公告)号：EP0316405B1

公开(公告)日：1993-03-24

申请号：EP88904831.0

申请日：1988-05-06

Applicant: Hughes Aircraft Company

Inventor： HUDSPETH, Thomas ,  KAPLAN, David, S. ,  ROSEN, Harold, A.

IPC: H03F1/02 ,  H03F3/217

CPC classification number: H03F1/0244 ,  H03F3/2178

Abstract: A high efficiency envelope amplifier (20) is disclosed. The invention includes a power supply (24), a comparator (60), and several switches (26-38). The power supply (24) is capable of providing multiple outputs. The comparator (60) measures the amplitude of an input signal against one of several threshold levels. When the input signal is within a predetermined range, a selected power supply output is switched onto the output path. Since the present invention incrementally switches small amounts of power, switching losses are substantially mitigated.

公开(公告)号：EP0137828B1

公开(公告)日：1989-04-12

申请号：EP84901175.4

申请日：1983-12-28

Applicant: Hughes Aircraft Company

Inventor： HUDSPETH, Thomas ,  ROSEN, Harold, A. ,  STEINBERG, Fritz

IPC: G01S3/32 ,  H04J15/00

CPC classification number: G01S3/325 ,  H04J15/00

Abstract: A modulator system (30) for converting a three-channel input microwave signal to a single-channel output microwave signal is formed of two (upper and lower) microwave sections which are joined together by a hybrid divider (94) at their inputs and by a hybrid combiner (96) at their outputs. Each of the microwave sections includes a pair of couplers (82 and 84, 88 and 90) which are joined by a Faraday rotator (86, 92). First and second microwave input signals (48, 52) are applied to a first port of the input coupler (82, 88) in each of these sections. A third microwave signal (50) is directed by the hybrid divider (94) to a second imput port in the input couplers (82, 84) of each of the microwave sections. Polarization of the third signal is vertical and is maintained through the two sections. Polarization of the first and second signals is horizontal and is maintained through the two sections. With activation of the rotator, a shift in polarization occurs resulting in appearence of the signals in both the horizontal and vertical components of an output coupler in each of the sections. The vertical component of the output couplers in each of the sections is combined by the hybrid combiner to produce the single-channel microwave signal (54). Synchronous detectors are utilized for subsequent extraction of the first and second input signals, the synchronous detectors and the Faraday rotators being driven by common sources of modulation signals wherein the rotator in one section is modulated at a rate different from the rotator in the second section.

公开(公告)号：EP0179071B1

公开(公告)日：1989-05-31

申请号：EP85900259.4

申请日：1984-08-27

Applicant: Hughes Aircraft Company

Inventor： HUDSPETH, Thomas ,  ROSS, Barry, S.

IPC: H01P1/12

CPC classification number: H01P1/125

Abstract: A switch (11) for a square coaxial network includes a lower housing (13), a rotor assembly (21), alternative transmission lines (19), and an upper housing (15) with a main transmission line (17). The rotor assembly includes a rotor (23) for selectively coupling the main transmission line to a selected alternative transmission line. The rotor is coadapted with each transmission line for resonant coupling therewith. A conductive shield (29) rotates with the rotor and isolates it from the unselected alternative transmission lines. A low-friction dielectric guide (25) helps provide proper spacing and coupling of the rotor and the square center conductor (35) of the selected alternative transmission line. A low-friction dielectric bushing (27) serves a similar function for the rotor and the center conductor (33) of the main transmission line.