Wireless transceiving apparatus for variability of signal processing band

• US 7,773,953 B2
• Filed: 09/12/2005
• Issued: 08/10/2010
• 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
• Primary Examiner(s): Anderson; Matthew D
• Assistant Examiner(s): Gonzales; April G
• Application Number:
  US11/224,811
• Publication Number:
  US 20060135086A1
• Time in Patent Office: 1,793 Days
• Field of Search: 455/188.1, 455/552, 455/307, 455/76, 455/84, 455/86, 455/112, 455/118, 455/82, 455/103, 455/552.1, 375/295, 375/297, 375/219, 331/177.V, 331/41, 331/179, 330/295, 330/10, 333/181, 327/105, 257/723
• US Class Current: 455/76
• 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 components on a path of transmission/reception signals, for performing analog signal processing, the components include at least one resonator;

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 anyone of a plurality of local oscillation (LO) frequencies among a signal processing band for tuning the analog processor at the provided LO frequency and for providing a resonator controlling signal to at least one resonator of the analog processor so as to vary tuning along the signal processing band of the analog processor when a different LO frequency is provided from the frequency synthesizer to the analog processor

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 relative to the provided LO frequency, wherein the frequency synthesizer provides the resonator controlling signal to the VCO and to the analog processor,

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 and for providing the resonator controlling signal to at least one resonator of the analog processor;

the VCO for generating the predetermined frequency signal in response to the output signal of the PLL; and

a frequency adjuster for adjusting the frequency of the output signal of the VCO into anyone of the LO frequencies and for providing the provided LO frequency to the analog processor.

2. The wireless transceiving apparatus as recited in claim 1, wherein the components are 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 2, wherein the resonator controlling signal from the frequency synthesizer is inputted to at least one resonator of the analog processor.

4. The wireless transceiving apparatus as recited in claim 1, wherein the PLL provides the resonator controlling signal from the VCO to at least one resonator of the analog processor.

5. The wireless transceiving apparatus as recited in claim 1, wherein the frequency adjuster is a frequency divider/multiplier that passes the output signal of the VCO, or divides or multiplies the frequency of the VCO by a predetermined number.

6. The wireless transceiving apparatus as recited in claim 1, wherein the VCO is a discretely and continuously tunable voltage controlled oscillator (DCT-VCO), the PLL provides the resonator controlling signal as a discrete tuning (DT) resonator controlling signal to at least one resonator of the analog processor so as to discretely vary tuning of the frequency of at least one resonator, and the PLL also provides the DT resonator controlling signal and a continuous tuning (CT) signal to the discretely and continuously tunable voltage controlled oscillator (DCT-VCO).

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

an analog processor having a plurality of components on a path of transmission/reception signals, configured to perform analog signal processing, the components include at least one resonator;

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

a frequency synthesizer configured to provide anyone of a plurality of local oscillation (LO) frequencies among a signal processing band for tuning the analog processor at the provided LO frequency and configured to provide a resonator controlling signal to at least one resonator of the analog processor so as to vary tuning along the signal processing band of the analog processor when a different LO frequency is provided from the frequency synthesizer to the analog processor, wherein the frequency synthesizer is configured to control a frequency of a voltage controlled oscillator (VCO) and a resonance frequency of the signal processors to have a rational number ratio relative to the provided LO frequency by providing the resonator controlling signal to the VCO and to the analog processor, the frequency synthesizer including;

a phase locked loop (PLL) configured to feed back an output signal of the VCO until the output signal reaches a predetermined frequency and configured to provide the resonator controlling signal to at least one resonator of the analog processor;

the VCO configured to generate the predetermined frequency signal in response to the output signal of the PLL; and

a frequency adjuster configured to adjust the frequency of the output signal of the VCO into anyone of the LO frequencies and configured to provide the provided LO frequency to the analog processor.

8. The wireless transceiving apparatus as recited in claim 7, wherein the components are a low noise amplifier (LNA), up/down mixers, a drive amplifier (DA), and a power amplifier (PA).

9. The wireless transceiving apparatus as recited in claim 7, wherein the resonator controlling signal from the frequency synthesizer is inputted to at least one resonator of the analog processor.

10. The wireless transceiving apparatus as recited in claim 7, wherein the PLL provides the resonator controlling signal from the VCO to at least one resonator of the analog processor.

11. The wireless transceiving apparatus as recited in claim 7, wherein the frequency adjuster is a frequency divider/multiplier that passes the output signal of the VCO, or divides or multiplies the frequency of the VCO by a predetermined number.

12. The wireless transceiving apparatus as recited in claim 7, wherein the VCO is a discretely and continuously tunable voltage controlled oscillator (DCT-VCO), the PLL provides the resonator controlling signal as a discrete tuning (DT) resonator controlling signal to at least one resonator of the analog processor so as to discretely vary tuning of the frequency of at least one resonator, and the PLL also provides the DT resonator controlling signal and a continuous tuning (CT) signal to the discretely and continuously tunable voltage controlled oscillator (DCT-VCO).