Direct conversion transceiver capable of reducing DC offset...

Details Direct conversion transceiver capable of reducing DC offset... Direct conversion transceiver capable of reducing DC offset...

2005-09-13

2005-09-13

Nguyen, Duc M. (Department: 2685)

Telecommunications

Receiver or analog modulated signal frequency converter

Frequency modifying or conversion

C455S300000, C455S117000, C455S114100, C455S114200, C455S063100

Reexamination Certificate

active

06944436

ABSTRACT:
A direct conversion transceiver capable of reducing a DC offset, using a multi-chip module is provided. In the transceiver, a mixer and an element constituting a local oscillator are positioned above a shielding ground surface, and an interconnection connecting the mixer and the element constituting the local oscillator are positioned below the shielding ground surface. The transceiver is formed as a multi-chip module and thus its size is not bigger than a one-chip direct conversion receiver and advantageous in that its size and manufacturing costs are less than a general direct conversion receiver that additionally includes a DC offset cancellation circuit or an off-chip type oscillator for reducing a DC offset.

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Nakatsugawa M., et al.,Line-Loss and Size Reduction Techniques for Millimeter-Wave RF Front-End Boards by Using a Polyimide/Alumina-Ceramic Multilayer Configuration, IEEE Transactions on Microwave Theory and Techniques, vol. 45, No. 12, Dec. 1997, pp. 2308-2315.

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