Periodic negative resistance microwave structures and amplifier and oscillator embodiments thereof
First Claim
Patent Images
1. A monolithic microwave device, comprising:
- (a) a transmission line segment consisting of a first conductor separated from a second conductor by solid dielectric; and
(b) a plurality of negative resistance devices in said dielectric located in groups periodically along said segment and connected to said first conductor and formed on said second conductor.
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Abstract
Structures (30) with IMPATT type diodes (34) located periodically along a transmission line (38-32) to simulate a distributed diode are disclosed. Preferred embodiments include incorporation of the periodic diode structures as the gain element of microwave amplifiers and oscillators. Preferred embodiments also place capacitors between the diodes to fix nodes in the electric field and increase the effective structure size.
9 Citations
23 Claims
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1. A monolithic microwave device, comprising:
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(a) a transmission line segment consisting of a first conductor separated from a second conductor by solid dielectric; and (b) a plurality of negative resistance devices in said dielectric located in groups periodically along said segment and connected to said first conductor and formed on said second conductor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A monolithic microwave oscillator, comprising:
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(a) a transmission line segment consisting of a first conductor separated from a second conductor by solid dielectric; (b) a first group of negative resistance devices in said dielectric located near a first end of said segment; (c) a second group of negative resistance devices in said dielectric located near the end of said segment remote from said first end; (d) and each of said negative resistance devices connected to said first conductor and formed on said second conductor; and (e) an output connected to said first end. - View Dependent Claims (14, 15, 16, 17, 18, 19)
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20. A monolithic microwave device, comprising:
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(a) a transmission line segment consisting of a first conductor separated from a second conductor by solid dielectric; (b) a first group of negative resistance devices in said dielectric located near a first end of said segment; (c) a second group of negative resistance devices in said dielectric located near the end of said segment remote from said first end; (d) each of said negative resistance devices connected to said first conductor and formed on said second conductor; (e) a circulator with a first port connected to said first end; (f) an input connected to a second port of said circulator; and (g) an output connected to a third port of said circulator. - View Dependent Claims (21)
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22. A monolithic microwave two-port amplifier, comprising:
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(a) a transmission line segment consisting of a first conductor separated from a second conductor by solid dielectric; (b) a plurality of negative resistance devices in said dielectric located in groups periodically along said segment and connected to said first conductor and formed on said second conductor; (c) an input connected to a first end of said segment; and (d) an output connected to the end of said segment remote from said first end. - View Dependent Claims (23)
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Specification