EP0310222A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Multiple-band mixer circuit
Assignee: Sharp Corp
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Filing: 1988-07-22
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Granted: —
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Expires: 2008-07-22
Abstract
Abstract A multiple-band mixer circuit comprises at least two mixer circuit blocks (M1, M2), a selection circuit block (5) for selecting one of the mixer circuit blocks, and a monitor circuit provided for common use by the at least two mixer circuit blocks, for monitoring the operation state of a mixer circuit block selected by the selection circuit block.
Inventors
- 👤 Mitsuhiro Noboru
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-31 11:18
CPC Classifications
H; H04; H04B; H04B1/00; H04B1/06; H04B1/16; H03; H03J; H03J5/00; H03J5/24; H03J5/242; H03J5/244; H03D; H03D9/00; H03D9/06; H03D9/0608; H03D9/0633
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
54 words
A multiple-band mixer circuit comprising: at least two mixer circuit blocks; a selection circuit block for selecting one of the mixer circuit blocks; and a monitor circuit provided for common use by said at least two mixer circuit blocks, for monitoring the operation state of a mixer circuit block selected by the selection circuit.
Claim 2
Dependent Claim
54 words
A multiple-band mixer circuit comprising: at least two mixer circuit blocks; a selection circuit block for selecting one of the mixer circuit blocks; and a monitor circuit provided for common use by said at least two mixer circuit blocks, for monitoring the operation state of a mixer circuit block selected by the selection circuit.
Claim 3
Dependent Claim
26 words
The multiple-band mixer circuit of claim 1, wherein each mixer circuit block contains a mixer diode, the monitor circuit monitoring the current in the mixer diode.
Claim 4
Dependent Claim
31 words
The multiple-band mixer circuit of claim 1, wherein said monitor circuit comprises a parallel circuit of a resistor and a capacitor and is connected via reactance to each mixer circuit block.
Claim 5
Dependent Claim
80 words
Two-band mixer circuit comprising two mixer circuit blocks and a selection circuit block, wherein a local oscillator supplies power only to the mixer circuit block appropriate for a band received so that one mixer circuit block is operated at a time, the circuit being characterized in that a parallel circuit made up of a resistor and a capacitor is connected for common used for each band, to monitor the diode current in the mixer diode in each mixer circuit block.
Claim 6
Dependent Claim
80 words
Two-band mixer circuit comprising two mixer circuit blocks and a selection circuit block, wherein a local oscillator supplies power only to the mixer circuit block appropriate for a band received so that one mixer circuit block is operated at a time, the circuit being characterized in that a parallel circuit made up of a resistor and a capacitor is connected for common used for each band, to monitor the diode current in the mixer diode in each mixer circuit block.
References Cited (Backward Citations)
No citation records indexed.
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