Paired nonlinear active elements in a waveguide cavity adapted to support orthogonal te mode waves and te mode waves

Claim 2

In combination: a waveguide cavity designed to support electromagnetic signal waves at a given frequency in a first mode and to support electromagnetic waves at an even harmonic frequency of said given frequency in a second mode orthogonal to said first mode, at least two negative resistance, two-terminal, nonlinear semiconductive active devices mounted within said cavity and extending from opposite walls of said cavity in a plane transverse to the direction of propagation of said electromagnetic signal waves and extending in the direction of the electric field of a selected one of said first and second modes of said signal waves whereby said active devices when properly biased act to excite within said cavity signal waves at the frequency corresponding to the selected one of said first and second modes, means associated with said active devices for causing said devices to excite within said cavity signal waves in the mode orthogonal to said selected one of said first and second modes, a first resonant iris at one end of said cavity a distance of about an integral multiple of a quarter wavelength at said even harmonic frequency away from the mounted position of said devices being dimensioned to reflect signal waves at said second mode and to couple said signal waves at said first mode out of the cavity, a second resonant iris at the end of said cavity opposite of said one end a distance of about an integral multiple of quarter wavelengths at said given frequency away from the mounted position of said devices being dimensioned to couple the signal waves at said second mode and to reflect signal waves at said first mode, a second waveguide cavity coupled to one of said irises and terminating in a reflective impedance to receive and reflect said signal waves of a predetermined one of said first and second modes back into said first mentioned waveguide cavity.

Claim 3

In combination: a waveguide cavity designed to support electromagnetic signal waves at a given frequency in a first mode and to support electromagnetic waves at an even harmonic frequency of said given frequency in a second mode orthogonal to said first mode, at least two negative resistance, two-terminal, nonlinear semiconductive active devices mounted within said cavity and extending from opposite walls of said cavity in a plane transverse to the direction of propagation of said electromagnetic signal waves and extending in the direction of the electric field of a selected one of said first and second modes of said signal waves whereby said active devices when properly biased act to excite within said cavity signal waves at the frequency corresponding to the selected one of said first and second modes, means associated with said active devices for causing said devices to excite within said cavity signal waves in the mode orthogonal to said selected one of said first and second modes, a first resonant iris at one end of said cavity a distance of about an integral multiple of a quarter wavelength at said even harmonic frequency away from the mounted position of said devices being dimensioned to reflect signal waves at said second mode and to couple said signal waves at said first mode out of the cavity, a second resonant iris at the end of said cavity opposite of said one end a distance of about an integral multiple of quarter wavelengths at said given frequency away from the mounted position of said devices being dimensioned to couple the signal waves at said second mode and to reflect signal waves at said first mode, a second waveguide cavity coupled to one of said irises and terminating in a reflective impedance to receive and reflect said signal waves of a predetermined one of said first and second modes back into said first mentioned waveguide cavity.

Claim 4

In combination: a waveguide cavity designed to support electromagnetic signal waves at a given frequency in a first mode and to support electromagnetic waves at an even harmonic frequency of said given frequency in a second mode orthogonal to said first mode, at least two negative resistance, two-terminal, nonlinear semiconductive active devices mounted within said cavity and extending from opposite walls of said cavity in a plane transverse to the direction of propagation of said electromagnetic signal waves and extending in the direction of the electric field of a selected one of said first and second modes of said signal waves whereby said active devices when properly biased act to excite within said cavity signal waves at the frequency corresponding to the selected one of said first and second modes, means associated with said active devices for causing said devices to excite within said cavity signal waves in the mode orthogonal to said selected one of said first and second modes, a first resonant iris at one end of said cavity a distance of about an integral multiple of a quarter wavelength at said even harmonic frequency away from the mounted position of said devices being dimensioned to reflect signal waves at said second mode and to couple said signal waves at said first mode out of the cavity, a second resonant iris at the end of said cavity opposite of said one end a distance of about an integral multiple of quarter wavelengths at said given frequency away from the mounted position of said devices being dimensioned to couple the signal waves at said second mode and to reflect signal waves at said first mode, a second waveguide cavity coupled to one of said irises and terminating in a reflective impedance to receive and reflect said signal waves of a predetermined one of said first and second modes back into said first mentioned waveguide cavity.

Claim 5

In combination: a rectangular waveguide cavity designed to support electromagnetic signal waves at a given frequency in a first TE10 mode and to support electromagnetic signal waves at an even harmonic frequency of said given frequency in a second TE01 mode, at least two negative resistance, two terminal, nonlinear semiconductive active devices mounted within said cavity and extending from opposite walls of said cavity in a plane transverse to the direction of propagation of said electromagnetic signal waves and extending in the direction of the electric field of a selected one of said TE10 and TE01 modes of said signal waves whereby said active devices when properly biased act to excite within said cavity signal waves at the frequency corresponding to the selected one of said TE10 and TE01 modes, means associated with said active devices for causing said devices to excite within said cavity signal waves in the mode orthogonal to said selected one of said TE10 and TE01 modes, a first resonant iris at one end of said cavity at a distance of about an integral multiple of quarter wavelengths at said even harmonic frequency away from the mounted position of said devices having a height sufficient to reflect TE01 mode signal waves within said cavity and a width on the order of at least one-half wavelength long at said given frequency to couple TE10 mode signal waves, a second resonant iris at the end of said cavity opposite said one end having a height dimensioned to couple said second harmonic TE01 mode signal waves out of said cavity and a width to reflect TE10 mode signal waves, a second waveguide cavity coupled to said second iris and terminated in a reflective impedance located about an integral multiple of quarter wavelengths at said even harmonic frequency away from said second iris to reflect signal waves in the TE01 mode coupled to said second waveguide cavity baCk into said first mentioned waveguide cavity.

Claim 6

In combination: a rectangular waveguide cavity designed to support electromagnetic signal waves at a given frequency in a first TE10 mode and to support electromagnetic signal waves at an even harmonic frequency of said given frequency in a second TE01 mode, at least two negative resistance, two terminal, nonlinear semiconductive active devices mounted within said cavity and extending from opposite walls of said cavity in a plane transverse to the direction of propagation of said electromagnetic signal waves and extending in the direction of the electric field of a selected one of said TE10 and TE01 modes of said signal waves whereby said active devices when properly biased act to excite within said cavity signal waves at the frequency corresponding to the selected one of said TE10 and TE01 modes, means associated with said active devices for causing said devices to excite within said cavity signal waves in the mode orthogonal to said selected one of said TE10 and TE01 modes, a first resonant iris at one end of said cavity at a distance of about an integral multiple of quarter wavelengths at said even harmonic frequency away from the mounted position of said devices having a height sufficient to reflect TE01 mode signal waves within said cavity and a width on the order of at least one-half wavelength long at said given frequency to couple TE10 mode signal waves, a second resonant iris at the end of said cavity opposite said one end having a height dimensioned to couple said second harmonic TE01 mode signal waves out of said cavity and a width to reflect TE10 mode signal waves, a second waveguide cavity coupled to said second iris and terminated in a reflective impedance located about an integral multiple of quarter wavelengths at said even harmonic frequency away from said second iris to reflect signal waves in the TE01 mode coupled to said second waveguide cavity baCk into said first mentioned waveguide cavity.

Claim 7

The combination as claimed in claim 2, wherein said second iris is located at a distance of about an integral multiple of quarter wavelengths of said given frequency away from mounted position of said devices.

Claim 8

In combination: a waveguide cavity designed to support electromagnetic signal waves at a given frequency in a first mode and to support electromagnetic signal waves at an even harmonic frequency of said given frequency in a second mode orthogonal to said first mode, at least four negative resistance, two terminal, nonlinear semiconductive active devices, a first two of said devices mounted within said cavity near a first wall of said cavity and extending from opposite second and third walls of said cavity in a plane transverse to the direction of propagation of said electromagnetic signal waves and extending in the direction of the electric field of a selected one of said first and second modes of said signal waves whereby said active devices when properly biased act to excite within said cavity signal waves at the frequency corresponding to the selected one of said first and second modes. a second two of said active devices mounted within said cavity near a fourth wall opposite said first wall and extending from said opposite second and third walls of said cavity in a plane transverse to the direction of propagation of said electromagnetic signal waves and extending in the direction of the electric field of said selected one of said first and second modes of said signal waves whereby said active devices when properly biased act to excite within said cavity signal waves at the frequency corresponding to the selected one of said first and second modes, means associated with said active devices for causing said devices to excite within said cavity signal waves in the mode orthogonal to said selected one of said first and second modes, means for reactively terminating signal waves in a certain one of said first and second modes, and means for resistively coupling out of said cavity the signal waves in the mode orthogonal to said certain one of said first and second modes.

Claim 9

In combination: a waveguide cavity designed to support electromagnetic signal waves at a given frequency in a first mode and to support electromagnetic signal waves at an even harmonic frequency of said given frequency in a second mode orthogonal to said first mode, at least four negative resistance, two terminal, nonlinear semiconductive active devices, a first two of said devices mounted within said cavity near a first wall of said cavity and extending from opposite second and third walls of said cavity in a plane transverse to the direction of propagation of said electromagnetic signal waves and extending in the direction of the electric field of a selected one of said first and second modes of said signal waves whereby said active devices when properly biased act to excite within said cavity signal waves at the frequency corresponding to the selected one of said first and second modes. a second two of said active devices mounted within said cavity near a fourth wall opposite said first wall and extending from said opposite second and third walls of said cavity in a plane transverse to the direction of propagation of said electromagnetic signal waves and extending in the direction of the electric field of said selected one of said first and second modes of said signal waves whereby said active devices when properly biased act to excite within said cavity signal waves at the frequency corresponding to the selected one of said first and second modes, means associated with said active devices for causing said devices to excite within said cavity signal waves in the mode orthogonal to said selected one of said first and second modes, means for reactively terminating signal waves in a certain one of said first and second modes, and means for resistively coupling out of said cavity the signal waves in the mode orthogonal to said certain one of said first and second modes.

Claim 10

The combination as claimed in claim 4, wherein said cavity is a rectangular waveguide cavity and said first mode is a TE01 mode and said second mode is a TE01 mode.

Claim 11

The combination as claimed in claim 4, including balancing means coupled between said devices.