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1. WO1999059256 - FULLY INTEGRATED ALL-CMOS AM RECEIVER

Publication Number WO/1999/059256
Publication Date 18.11.1999
International Application No. PCT/US1999/009995
International Filing Date 06.05.1999
Chapter 2 Demand Filed 03.12.1999
IPC
H03J 5/02 2006.01
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
JTUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
5Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner
02with variable tuning element having a number of predetermined settings and adjustable to a desired one of these settings
H03L 7/197 2006.01
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
LAUTOMATIC CONTROL, STARTING, SYNCHRONISATION, OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
7Automatic control of frequency or phase; Synchronisation
06using a reference signal applied to a frequency- or phase-locked loop
16Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop
18using a frequency divider or counter in the loop
197a time difference being used for locking the loop, the counter counting between numbers which are variable in time or the frequency divider dividing by a factor variable in time, e.g. for obtaining fractional frequency division
H04B 1/28 2006.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
1Details of transmission systems, not covered by a single one of groups H04B3/-H04B13/123; Details of transmission systems not characterised by the medium used for transmission
06Receivers
16Circuits
26for superheterodyne receivers
28the receiver comprising at least one semiconductor device having three or more electrodes
CPC
H03J 5/0272
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
JTUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
5Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner
02with variable tuning element having a number of predetermined settings and adjustable to a desired one of these settings
0245Discontinuous tuning using an electrical variable impedance element, e.g. a voltage variable reactive diode, in which no corresponding analogue value either exists or is preset, i.e. the tuning information is only available in a digital form
0272the digital values being used to preset a counter or a frequency divider in a phase locked loop, e.g. frequency synthesizer
H03L 7/197
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
LAUTOMATIC CONTROL, STARTING, SYNCHRONISATION, OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
7Automatic control of frequency or phase; Synchronisation
06using a reference signal applied to a frequency- or phase-locked loop
16Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop
18using a frequency divider or counter in the loop
197a time difference being used for locking the loop, the counter counting between numbers which are variable in time or the frequency divider dividing by a factor variable in time, e.g. for obtaining fractional frequency division
H04B 1/1027
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
1Details 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
06Receivers
10Means associated with receiver for limiting or suppressing noise or interference
1027assessing signal quality or detecting noise/interference for the received signal
H04B 1/26
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
1Details 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
06Receivers
16Circuits
26for superheterodyne receivers
H04B 1/28
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
1Details 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
06Receivers
16Circuits
26for superheterodyne receivers
28the receiver comprising at least one semiconductor device having three or more electrodes
Applicants
  • MICREL, INCORPORATED [US]/[US]
Inventors
  • ELDER, Joseph, S.
  • YESTREBSKY, Joseph, T.
  • ISLAM, Mohammed, D.
Agents
  • OGONOWSKY, Brian, D.
Priority Data
09/075,28108.05.1998US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) FULLY INTEGRATED ALL-CMOS AM RECEIVER
(FR) RECEPTEUR MODULATION D'AMPLITUDE TOTALEMENT CMOS ENTIEREMENT INTEGRE
Abstract
(EN)
A single chip superheterodyne AM receiver is disclosed herein. Pin count may be 4 or more. The receiver is a OOK (ON-OFF keyed) Receiver IC for remote wireless applications. This device is an 'antenna-in, data-out' monolithic device. All RF and IF tuning is accomplished automatically within the IC, which eliminates manual tuning, and reduces production costs. Receiver functions are completely integrated. The result is a highly reliable yet extremely low cost solution for high volume wireless applications. Because the receiver is a true single-chip radio receiver, it is extremely easy to apply, minimizing design and production costs, and improving time to market. The receiver uses a novel architecture that allows the receiver to demodulate signals over a wide RF band, which eliminates the need for manual tuning. This is referred to as a swept LO mode. This also significantly relaxes the frequency accuracy and stability requirements of the Transmitter, allowing the receiver to be compatible with both SAW-based and LC-based transmitters. The receiver sensitivity and selectivity are sufficient to provide low bit error rates for decode ranges over 100 meters, equaling the performance of other more expensive solutions. All tuning and alignment are accomplished on-chip with a reference frequency provided by a low-cost ceramic resonator or an externally supplied clock reference. All post-detection (demodulator) data filtering is provided on the receiver chip, so no external filters need to be designed.
(FR)
L'invention concerne un récepteur modulation d'amplitude superhétérodyne monopuce. Le nombre de broches peut être d'au moins 4. Le récepteur est un récepteur à circuit intégré OOK (codé ON-OFF) destiné à des applications radio à distance. Ce dispositif est un dispositif monolithique de type 'antenna-in, data-out'. Toutes les syntonisations HF et FI se réalisent automatiquement à l'intérieur du circuit intégré, ce qui rend inutile tout réglage manuel, et permet de réduire les coûts de production. On obtient ainsi une solution hautement fiable et à coût extrêmement faible pour des applications radio de grand volume. Etant donné que le récepteur est un véritable récepteur radio monopuce, il est d'une application extrêmement facile, ce qui permet de minimiser les coûts de conception et de production et d'améliorer son temps de commercialisation. Le récepteur utilise une nouvelle architecture qui lui permet de démoduler des signaux sur une large bande HF, rendant inutile tout réglage manuel. C'est ce que l'on appelle le mode oscillateur local à balayage. Cela permet également d'assouplir dans une large mesure les exigences en matière de précision et de stabilité de fréquence de l'émetteur, ce qui rend le récepteur compatible avec les émetteurs à onde acoustique de surface et à condensateur à inductance. La sensibilité et la sélectivité du récepteur sont suffisantes pour obtenir des taux d'erreur binaire de décodage peu élevés sur les plages de plus de 100 mètres, égalisant ainsi les performances d'autres solutions, plus coûteuses. La syntonisation et le calage sont réalisés sur la puce, une fréquence de référence étant fournie par un résonateur céramique à faible coût ou une synchronisation de référence d'origine externe. La totalité du filtrage postérieur à la détection des données (au niveau du démodulateur) est réalisée sur la puce du récepteur, de manière à ne pas avoir à concevoir de filtre externe.
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