Telecommunications – Transmitter and receiver at same station – Radiotelephone equipment detail
Reexamination Certificate
2003-09-08
2008-10-07
Maung, Nay A. (Department: 2618)
Telecommunications
Transmitter and receiver at same station
Radiotelephone equipment detail
C455S156100, C455S260000, C455S553100
Reexamination Certificate
active
07433706
ABSTRACT:
A multiband RF transmitting and receiving apparatus and a method therefore is capable of using a control voltage from a phase locked loop (PLL) to control other components, as well as a voltage controlled oscillator (VCO), of a multiband RF transceiver. The multiband transmitting and receiving apparatus adjusts a capacitance value of a varactor in a power amplifier (PA) and a low noise amplifier (LNA) including an LC parallel resonance circuit, respectively, using the control voltage from the PLL and controls a current flowing to a mixer. Accordingly, the components in the multiband RF transceiver are able to operate a greater number of frequency bands than a single frequency band, thereby reducing the number of components required to design the multiband RF transceiver.
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Cho Gea-ok
Kim Hoon-tae
Chan Richard
Lee & Morse P.C.
Maung Nay A.
Samsung Electronics Co,. Ltd.
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