Multi-band receiver having multi-slot capability
AssigneeSkyworks Solutions, Inc.
InventorJames R. Snider
Life of this patent
Estimating the term…
Abstract
A dual-band receiver for a wireless communication device having multi-slot capability. A first oscillator generates a relatively high frequency traffic LO signal. A second oscillator generates a first relatively low frequency signal, and a third oscillator generates a fixed low frequency signal. A first mixer mixes the first and fixed low frequency signals to produce a relatively high frequency monitor LO signal. A switch selects the traffic LO signal when the receiver is in a traffic slot and the monitor LO signal when the receiver is in a monitor slot. The selected LO signal is provided to a second mixer along with the received signal to produce a first IF signal. A third mixer mixes the first IF signal and the fixed frequency signal to produce an output signal.
Claims18
A method for wireless, multi-slot reception comprising the following steps:
- generating a relatively high frequency traffic LO signal;
- generating a first relatively low frequency signal;
- generating a second relatively low frequency signal;
- mixing the first and second relatively low frequency signals to generate a relatively high frequency monitor LO signal;
- receiving an Rx signal in a traffic slot or a monitor slot of a TDMA frame;
- mixing the Rx signal with the traffic LO signal if the Rx signal is received in the traffic slot to generate a first IF signal;
- mixing the Rx signal with the monitor LO signal if the Rx signal is received in the monitor slot to generate the first IF signal;
- and
- mixing the first IF signal with the one of the low frequency signals to generate an output signal.
A wireless communication device comprising:
- a microphone for capturing audio acoustic signals and converting the acoustic signals into electric signals;
- a speaker for converting electric signals into audio acoustic signals;
- an antenna for wireless transmission and reception of acoustic or data signals;
- a transmitter for transmitting acoustic or data signals over the antenna;
- a receiver comprising a high frequency oscillator that generates a traffic signal;
- two low frequency oscillators;
- a first mixer that mixes the signals from the two low frequency oscillators to generate a monitor signal;
- a switch that selects either the monitor or traffic signal;
- a second mixer that mixes a received signal from the antenna with either the traffic or monitor signal from the switch to generate an IF signal;
- and a third mixer that mixes the IF signal with a signal from one of the low frequency oscillators to generate an output signal;
- and
- a processor for directing operation of the communication device.
A receiver comprising:
- an antenna that receives an Rx signal
- a first oscillator that generates a relatively high frequency traffic LO signal;
- a second oscillator that generates a first relatively low frequency signal;
- a third oscillator that generates a second relatively low frequency signal;
- a first mixer that mixes the first and second relatively low frequency signals to produce a relatively high frequency monitor LO signal;
- a second mixer that mixes either the traffic or monitor LO signal with the Rx signal to produce a first IF signal;
- and
- a third mixer that mixes the first IF signal and the second relatively low frequency signal to produce an output signal.
Dependencies are inferred from the claim text.