CIRCUIT ARRANGEMENT FOR ADJUSTING THE IMPEDANCE OF A DIFFERENTIAL ACTIVE COMPONENT
The active component ( 400, 500 ) of a radio device comprises a first transistor (Q 1 ) and a second transistor (Q 2 ). The differential input of the active component comprises a first input line (RF+) and a second input line (RF−), of which the first input line is coupled to the base of the first t...
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| Format: | Patent |
| Sprache: | eng |
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| Zusammenfassung: | The active component (
400, 500
) of a radio device comprises a first transistor (Q
1
) and a second transistor (Q
2
). The differential input of the active component comprises a first input line (RF+) and a second input line (RF−), of which the first input line is coupled to the base of the first transistor (Q
1
) and the second input line is coupled to the base of the second transistor (Q
2
). In order to match the input impedance there is cross-feedback (Rfb′) between the first transistor (Q
1
) and the second transistor (Q
2
). |
|---|