MX9801327A - Metodo y aparato para recibir señales de comunicacion. - Google Patents
Metodo y aparato para recibir señales de comunicacion.Info
- Publication number
- MX9801327A MX9801327A MX9801327A MX9801327A MX9801327A MX 9801327 A MX9801327 A MX 9801327A MX 9801327 A MX9801327 A MX 9801327A MX 9801327 A MX9801327 A MX 9801327A MX 9801327 A MX9801327 A MX 9801327A
- Authority
- MX
- Mexico
- Prior art keywords
- mixer
- dcs
- gsm
- input
- band
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/005—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges
- H04B1/0053—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges with common antenna for more than one band
- H04B1/006—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges with common antenna for more than one band using switches for selecting the desired band
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
- H03D7/00—Transference of modulation from one carrier to another, e.g. frequency-changing
- H03D7/12—Transference of modulation from one carrier to another, e.g. frequency-changing by means of semiconductor devices having more than two electrodes
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
- H03J1/00—Details of adjusting, driving, indicating, or mechanical control arrangements for resonant circuits in general
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
- H03J1/00—Details of adjusting, driving, indicating, or mechanical control arrangements for resonant circuits in general
- H03J1/0008—Details of adjusting, driving, indicating, or mechanical control arrangements for resonant circuits in general using a central processing unit, e.g. a microprocessor
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/005—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/005—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges
- H04B1/0053—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges with common antenna for more than one band
- H04B1/0057—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges with common antenna for more than one band using diplexing or multiplexing filters for selecting the desired band
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Power Engineering (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Transceivers (AREA)
- Superheterodyne Receivers (AREA)
Abstract
Un método y aparato permiten que un dispositivo de comunicacion (100) opere en multiples bandas, tal como bandas de GSM de 900 MHz, y DC8 de 1800 MHz, y DCs de 1900 MHz, al eliminar la necesidad de un mezclador para cada banda. En un radioteléfono de GSM/DCS 1800 de doble banda, por ejemplo, las frecuencias de inyeccion del oscilador local (LO) para ambas bandas de GSM y de DCS se proporcionan a un mezclador (234) a través del uso de filtros de combinacion (222, 246). De esta manera, los requerimientos de transmision en duplex y acoplamiento de la entrada del mezclador se simplifican y las pérdidas de señal se minimizan. Los puertos de salida comun del filtro de combinacion de RX/LO de GSM y el filtro de combinacion de RX/LO de DCS se transmiten en duplex a la entrada del mezclador. También, el acoplamiento de impedancia de entrada del mezclador se diseña para acoplar la impedancia para las señales recibidas en cada banda, así como para proporcionar un desvío de RF en la frecuencia de IF. El acoplamiento en la salida del mezclador se diseña para acoplar la impedancia del filtro de IF y proporciona una impedancia baja a las frecuencias de entrada de RF. Finalmente, también se describe un radioteléfono de triple banda.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US08/803,186 US5926751A (en) | 1997-02-19 | 1997-02-19 | Method and apparatus for receiving communication signals |
| US08803186 | 1997-02-19 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| MX9801327A true MX9801327A (es) | 1998-08-30 |
| MXPA98001327A MXPA98001327A (es) | 1998-11-12 |
Family
ID=
Also Published As
| Publication number | Publication date |
|---|---|
| DE19806096C2 (de) | 2000-05-11 |
| GB2322491B (en) | 2000-03-22 |
| GB2322491A (en) | 1998-08-26 |
| US5926751A (en) | 1999-07-20 |
| GB9801264D0 (en) | 1998-03-18 |
| KR19980071457A (ko) | 1998-10-26 |
| JPH10242882A (ja) | 1998-09-11 |
| DE19806096A1 (de) | 1998-08-27 |
| KR100262922B1 (ko) | 2000-08-01 |
| FR2759827B1 (fr) | 2001-05-25 |
| FR2759827A1 (fr) | 1998-08-21 |
| RU2214050C2 (ru) | 2003-10-10 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FG | Grant or registration | ||
| PD | Change of proprietorship |
Owner name: MOTOROLA MOBILITY, INC. |
|
| MM | Annulment or lapse due to non-payment of fees |