EP0398712A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
An amplification circuit
Assignee: COSSINS PETER
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Filing: 1990-05-17
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Granted: —
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Expires: 2010-05-17
Abstract
Abstract An amplification circuit comprises a detector (15) for detecting transmitted radio signals in the range 0.5GHz to 20GHz and a wideband logarithmic video amplifier (WLVA 16). The WLVA is fabricated on an application specific integrated circuit (17) for example with a temperature sensor (20). The output from the temperature sensor is supplied to a second ASIC (24) which samples the temperature signal and supplies compensation signals read from a non-volatile memory device.
Inventors
- 👤 Peter Anderson Cossins
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-03 19:58
CPC Classifications
H; H03; H03F; H03F1/00; H03F1/30
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
86 words
An amplification circuit comprising detecting means (15) for detecting transmitted radio signals having a frequency in the range 0.5GHz to 20GHz, a wideband amplifier (16) for amplifying said detected signals, and temperature compensation means wherein said temperature compensation means includes a temperature sensor (20) arranged to produce a temperature signal indicative of the temperature of said amplifier, sampling means (22) for sampling said temperature signal, means (26) for storing compensation parameters and processing means (24, 25) for supplying a plurality of compensation signals to said amplifier.
Claim 2
Dependent Claim
86 words
An amplification circuit comprising detecting means (15) for detecting transmitted radio signals having a frequency in the range 0.5GHz to 20GHz, a wideband amplifier (16) for amplifying said detected signals, and temperature compensation means wherein said temperature compensation means includes a temperature sensor (20) arranged to produce a temperature signal indicative of the temperature of said amplifier, sampling means (22) for sampling said temperature signal, means (26) for storing compensation parameters and processing means (24, 25) for supplying a plurality of compensation signals to said amplifier.
Claim 3
Dependent Claim
26 words
An amplification circuit according to claim 1, wherein said wideband (16) amplifier and said temperature sensor (20) are fabricated on a first common integrated circuit (17).
Claim 4
Dependent Claim
18 words
An amplification circuit according to claim 2, wherein said first common integrated circuit is fabricated using bipolar technology.
Claim 5
Dependent Claim
24 words
An amplification circuit according to claim 1, wherein said sampling means and said processing means are fabricated on a second common integrated circuit (21).
Claim 6
Dependent Claim
35 words
An amplification circuit according to claim 4, wherein said second integrated circuit (21) also includes output means for converting digital compensation signals from said processor into analogue compensation signals for said first integrated circuit (17).
Claim 7
Dependent Claim
20 words
An amplification circuit according to claim 4 or 5, wherein said second integrated circuit (21) is fabricated using CMOS technology.
Claim 8
Dependent Claim
27 words
An amplification circuit according to claim 1, wherein said wideband amplifier is a multi-stage logarithmic amplifier and compensation signals are supplied to a plurality of said stages.
Claim 9
Dependent Claim
24 words
An amplification circuit according to claim 7, wherein the gain, offset and weighting current of said amplifier stages are adjusted by said compensation signals.
Claim 10
Dependent Claim
47 words
An amplification system comprising a logarithmic amplifier and a temperature sensor integrated on the same fabrication, and a calibration circuit for sampling signals from the temperature sensor and for generating in response to the sampled signals compensation data to define parameters which control operation of the amplifier.
Claim 11
Dependent Claim
47 words
An amplification system comprising a logarithmic amplifier and a temperature sensor integrated on the same fabrication, and a calibration circuit for sampling signals from the temperature sensor and for generating in response to the sampled signals compensation data to define parameters which control operation of the amplifier.
References Cited (Backward Citations)
No citation records indexed.
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