Precision controlled RF power detector circuit
AssigneeNokia Telecommunications Oy
InventorsChia-Sam Wey, Kim Anh Tran, Jukka-Pekka Neitiniemi
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Abstract
A controlled detector circuit for generating a detector current to the input of a selected circuit. An unwanted operational voltage is generated on the input of the selected circuit affecting the precision of the detector circuit. The controlled detector circuit comprises a detector circuit having an RF input for detecting a RF signal and a detector output for providing the detector current. Operation of the detector circuit generates a voltage drop affecting the precision of the detector current. A control circuit having a control output connected to the detector output generates a control voltage for reducing the unwanted parameters affecting the precision of the detector current.
Claims17
A controlled detector circuit for generating a detector current to the input of a selected circuit, wherein an unwanted operational voltage is generated on the input of the selected circuit in operation of the selected circuit;
- said controlled detector circuit comprising:
- a detector circuit having an RF input for detecting an RF signal and a detector output for providing the detector current in response to said RF signal, said detector output coupled to the input of the selected circuit, wherein operation of said detector circuit generates a voltage drop which affects said detector current, and, further, wherein the operational voltage on the input of the selected circuit affects said detector current;
- and
- a control circuit having a control output coupled to said detector output, said control circuit generating a control voltage on said control output, said control voltage for compensating the effects of said voltage drop and said operational voltage on the detector current.
A precision controlled detector circuit for inputting a detector current to the input of a next stage circuit, wherein said next stage circuit generates a voltage on said input during operation referred to herein as operational voltage source, said precision controlled detector circuit comprising;
- a detector circuit having an RF input for detecting an RF signal and a detector output for providing the detector current to the next stage circuit in response to said RF signal, wherein an operational effect of said detector circuit produces a first voltage drop that affects said detector current, and wherein the operational voltage source affects said detector current;
- and
- a control circuit having a control output coupled to said detector output and containing a control voltage for compensating the effects of said first voltage drop and said operational voltage source on the detector current.
Dependencies are inferred from the claim text.