Wireless transceiving apparatus for variability of signal processing band

• US 20060135086A1
• Filed: 09/12/2005
• Published: 06/22/2006
• Est. Priority Date: 12/17/2004
• Status: Active Grant

• Current Assignee: Electronics and Telecommunications Research Institute
• Original Assignee: Electronics and Telecommunications Research Institute
• Inventors: Yu, Hyun-Kyu, Kim, Cheon-Soo, Park, Mun-Yang, Han, Seon-Ho
• Granted Patent: US 7,773,953 B2
• Time in Patent Office: Days
• US Class Current: 455/82
• CPC Class Codes: H04B 1/405 with multiple discrete channels

Abstract

Provided is a wireless transceiving apparatus for variability of signal processing band, in which at least one resonator of an analog processor and a VCO are simultaneously controlled using a frequency synthesizer, and a frequency of the VCO and a resonance frequency of the analog processor are controlled to have a rational number ratio, thereby capable of varying the signal processing band. The wireless transceiving apparatus includes: an analog processor having a plurality of resonators on a path of transmission/reception signals, for performing analog signal processing; a digital processor for performing digital signal processing on an output signal of the analog processor or data to be transmitted to the analog processor; and a frequency synthesizer for providing a local oscillation (LO) frequency and a controlling signal to the resonators of the analog processor so as to vary a signal processing band of the analog processor.

Claims

1. A wireless transceiving apparatus for variability of signal processing band, comprising:

an analog processor having a plurality of resonators on a path of transmission/reception signals, for performing analog signal processing;

a digital processor for performing digital signal processing on an output signal of the analog processor or data to be transmitted to the analog processor; and

a frequency synthesizer for providing a local oscillation (LO) frequency and a controlling signal to the resonators of the analog processor so as to vary a signal processing band of the analog processor.

2. The wireless transceiving apparatus as recited in claim 1, wherein the analog processor includes a low noise amplifier (LNA), up/down mixers, a drive amplifier (DA), and a power amplifier (PA).

3. The wireless transceiving apparatus as recited in claim 1, wherein the controlling signal from the frequency synthesizer is inputted to at least one of the plurality of resonators contained in the analog processor.

4. The wireless transceiving apparatus as recited in claim 1, wherein the frequency synthesizer controls a frequency of a voltage controlled oscillator (VCO) and a resonance frequency of the signal processors to have a rational number ratio.

5. The wireless transceiving apparatus as recited in claim 4, wherein the frequency synthesizer provides the controlling signal of the VCO to the analog processor.

6. The wireless transceiving apparatus as recited in claim 4, wherein the frequency synthesizer includes:

a phase locked loop (PLL) for feeding back an output signal of the VCO until the output signal reaches a predetermined frequency;

the VCO for generating a predetermined frequency signal according to the output signal of the PLL; and

a frequency adjuster for adjusting the frequency of the output signal of the VCO.

7. The wireless transceiving apparatus as recited in claim 6, wherein the PLL provides the controlling signal from the VCO to the analog processor.

8. The wireless transceiving apparatus as recited in claim 6, wherein the frequency divider/multiplier passes the output signal of the VCO, or divides or multiplies the frequency of the VCO by a predetermined number.

9. The wireless transceiving apparatus as recited in claim 4, wherein when the VCO is a discretely and continuously tunable voltage controlled oscillator (DCT-VCO), the PLL provides discrete tuning (DT) signals to the resonators of the analog processor so as to discretely vary the frequency of the resonator, and provides the discrete tuning signals and continuous tuning (CT) signals to the discretely and continuously tunable voltage controlled oscillator (DCT-VCO).