Abstract Described are transmission line media and microwave structures for combining a multiplicity of elementary discharge devices (e.g., semiconductor diodes) biased for negative resistance at frequencies in a given band to obtain increased high-frequency power and high-frequency bandwidth of useful operation in that band, of microwave energy propagated in the transmission line media. The basic principle involved is to prevent or suppress oscillations in undesired modes of resonance or propagation induced by the use of one or more diodes, by segregating these undesired modes into frequency bands outside the frequency range to be utilized. Under this principle complex networks containing a large number of resonant loops and having as many resonant or normal modes as there are resonant loops are coupled into a primary transmission line so that the network may oscillate or amplify in the desired mode and each diode contributes an equal share of the total power of the network, but the negative conductance properties of the diodes are substantially ineffective at frequencies other than the desired modes.
Inventors
👤 Marion E Hines
Bibliographic Details
Application Number—
JurisdictionUS
Data Sourcegoogle_patents
Last Synchronized2026-10-26 14:59
CPC Classifications
H; H03; H03F; H03F3/00; H03F3/04; H03F3/10
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
182 words
A high-frequency electrical travelling wave amplifier, combining a multiplicity of elementary electron discharge devices biased for negative resistance at frequencies in a given operating frequency band comprising: a. electromagnetic wave transmission line means having an input and an output for wave energy in said frequency band; b. a multiplicity of electron discharge elements which when suitably biased exhibit negative resistance in said frequency band; c. biasing means and mounting means for each of said elements distributed along the length of said electromagnetic wave transmission line means, said biasing means and mounting means each having inductance of magnitude such that the range of natural resonant frequencies of each of said elements in said biasing and mounting means is substantially different from said given operating frequency band; d. and coupling means coupling each of said electron discharge elements to said electromagnetic wave transmission line means such that when wave energy in said operating frequency band is incident on said input, and when said elements are suitably biased as aforesaid, each of said elements may contribute to the energy propagating in said transmission line means.
Claim 2
Dependent Claim
182 words
A high-frequency electrical travelling wave amplifier, combining a multiplicity of elementary electron discharge devices biased for negative resistance at frequencies in a given operating frequency band comprising: a. electromagnetic wave transmission line means having an input and an output for wave energy in said frequency band; b. a multiplicity of electron discharge elements which when suitably biased exhibit negative resistance in said frequency band; c. biasing means and mounting means for each of said elements distributed along the length of said electromagnetic wave transmission line means, said biasing means and mounting means each having inductance of magnitude such that the range of natural resonant frequencies of each of said elements in said biasing and mounting means is substantially different from said given operating frequency band; d. and coupling means coupling each of said electron discharge elements to said electromagnetic wave transmission line means such that when wave energy in said operating frequency band is incident on said input, and when said elements are suitably biased as aforesaid, each of said elements may contribute to the energy propagating in said transmission line means.
Claim 3
Dependent Claim
29 words
A high-frequency electrical travelling wave amplifier as recited in claim 1 wherein the coupling means coupling said electron discharge elements to said electromagnetic wave transmission line means are capacitative.
Claim 4
Dependent Claim
23 words
A high-frequency electrical travelling wave amplifier as recited in claim 1 wherein the electromagnetic wave transmission line means comprise a coaxial transmission line.
Claim 5
Dependent Claim
21 words
A high-frequency electrical travelling wave amplifier as recited in claim 1 wherein the electromagnetic wave transmission line means comprise a waveguide.
Claim 6
Dependent Claim
20 words
A high-frequency electrical travelling wave amplifier as recited in claim 2 wherein the multiplicity of discharge elements comprise negative-resistance devices.
Claim 7
Dependent Claim
20 words
A high-frequency electrical travelling wave amplifier as recited in claim 2 wherein the multiplicity of discharge elements comprise semiconductor diodes.