Antenna diversity receiver
First Claim
Patent Images
1. An antenna diversity receiver comprising:
- an antenna selective switching means for coupling one of a plurality of antennas to a RF receiver input; and
a multipath detector for controlling said antenna selective switching means including a switching disabling means for automatically disabling said antenna selective switching means when a signal delay effected by a bandwidth variable intermediate frequency (IF) circuit between an occurrence of multipath distortion in a RF reception signal received by the antenna diversity receiver and the activation of said antenna selective switching means for coupling one of the plurality of antennas to the RF receiver input exceeds a predetermined critical signal delay value.
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Abstract
An antenna diversity receiver is disclosed. The diversity receiver has a multipath detector for controlling an antenna selective switching circuit. The switching circuit couples one of a plurality of antennas to a RF receiver input. The receiver allows suppression of adjacent channel interferences without unwanted side effects by employing a switching disabling circuit to automatically disabling the switching circuit when the signal delay between the occurrence of multipath distortions in the RF reception signal and the switching between antennas exceeds a predetermined critical signal delay value.
45 Citations
14 Claims
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1. An antenna diversity receiver comprising:
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an antenna selective switching means for coupling one of a plurality of antennas to a RF receiver input; and
a multipath detector for controlling said antenna selective switching means including a switching disabling means for automatically disabling said antenna selective switching means when a signal delay effected by a bandwidth variable intermediate frequency (IF) circuit between an occurrence of multipath distortion in a RF reception signal received by the antenna diversity receiver and the activation of said antenna selective switching means for coupling one of the plurality of antennas to the RF receiver input exceeds a predetermined critical signal delay value. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An antenna diversity receiver which detects a RF reception signal comprising:
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a RF receiver with an input;
an antenna selective switching circuit which couples one of a plurality of antennas to the input of the RF receiver; and
a multipath detector coupled to the antenna selective switching circuit, the detector including a switching disabling circuit which automatically disables the switching circuit when a signal delay effected by a bandwidth variable intermediate frequency (IF) circuit between an occurrence of a multipath signal in the RF reception signal and the activation of the antenna selective switching circuit for coupling one of the plurality of antennas to the input of the RF receiver exceeds a predetermined critical signal delay value. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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Specification