EP0091201A1
Expired / Lapsed
EP
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Microwave discriminator
Assignee: British Telecommunications PLC
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Filing: 1983-03-08
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Granted: —
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Expires: 2003-03-08
Abstract
Abstract A microwave discriminator has a mixer 14 with two parallel input paths 12, 15 one 12 of which includes a dielectric resonator 13. After filtering out a microwave component, the output of the mixer 14 is a low frequency signal which measures the discrepancy between the input and a standard set by the resonator. The standard does not vary much with the temperature of the resonator. The discriminator can be used to improve the frequency stabilities of microwave devices, e.g. microwave oscillators.
Inventors
- 👤 Ian Gilbert Gosling
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-06 01:13
CPC Classifications
H; H03; H03D; H03D9/00; H03D9/02; H03D9/04; H03L; H03L7/00; H03L7/02; H03L7/04
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
40 words
A microwave discriminator characterised by comprising a mixer (14) with parallel input paths (12, 15) one (12) of which includes a dielectric resonator (13) whereby the output of the mixer is dependent on the frequency of a microwave input signal.
Claim 2
Dependent Claim
40 words
A microwave discriminator characterised by comprising a mixer (14) with parallel input paths (12, 15) one (12) of which includes a dielectric resonator (13) whereby the output of the mixer is dependent on the frequency of a microwave input signal.
Claim 3
Dependent Claim
35 words
A discriminator according to claim 1 characterised by including a filter (22) in the output of the mixer (14) whereby the output thereof is a low frequency signal dependent on the frequency of the input.
Claim 4
Dependent Claim
47 words
A discriminator according to claim 2 charcterised by including a detector (18) for producing a signal representing the power of the input and a subtracting amplifier (20) for producing a signal dependent on the algebraic difference between the output of the mixer (14) and the detector (18).
Claim 5
Dependent Claim
28 words
A microwave discriminator according to claim 1 characterised in that it is implemented as microstrip in the form of conductive regions on both sides of a dielectric sheet.
Claim 6
Dependent Claim
29 words
A stabilised microwave oscillator having a feedback loop (31, 32) characterised in that the feedback loop includes a discriminator (31) according to any one of claims 1 to 4.
References Cited (Backward Citations)
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