Wide-band direct conversion transmission apparatus
AssigneeSamsung Electro-Mechanics Co., Ltd.
InventorsJun Ki Min, Jong Sik Kim, Hyun Chol Shin, Jeong Suk Lee
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Abstract
There is provided a wide-band direct conversion transmitting apparatus including: a local oscillation unit generating first, second, and third oscillation signal pairs each including a pair of signals having a phase difference of 90°; an image rejection mixer unit mixing baseband transmission signals including an I signal and a Q signal having a phase difference of 90° with the first oscillation signal pair; a harmonic rejection mixer unit mixing each of the first, second, and third oscillation signal pairs with the baseband transmission signals; and an output signal selecting unit selecting output signals from the image rejection mixer unit or from the harmonic rejection mixer unit.
Claims11
A wide-band direct conversion transmitting apparatus comprising:
- a local oscillation unit generating first, second, and third oscillation signal pairs each including a pair of signals having a phase difference of 90°;
- an image rejection mixer unit mixing baseband transmission signals including an I signal and a Q signal having a phase difference of 90° with the first oscillation signal pair;
- a harmonic rejection mixer unit mixing each of the first, second, and third oscillation signal pairs with the baseband transmission signals;
- and
- an output signal selecting unit selecting output signals from the image rejection mixer unit or from the harmonic rejection mixer unit.
Dependencies are inferred from the claim text.