Transceiver with receive and transmit path performance diversity
First Claim
1. A method of receive path performance diversity, the method comprising:
- receiving a first signal in a first signal path;
band-pass filtering the first signal in the first signal path to attenuate frequencies outside of a first radio frequency (RF) operating band;
filtering the band-pass filtered first signal, by notch filtering or band reject filtering, at one or more frequencies within the first RF operating band to attenuate one or more jamming signals and generate a first path intermediate signal;
receiving a second signal in a second signal path;
band-pass filtering the second signal in the second signal path to attenuate frequencies outside of the first RF operating band and generate a second path intermediate signal,wherein the first path intermediate signal is attenuated by said notch filtering or band reject filtering at one or more frequencies not attenuated in the second path intermediate signal; and
combining a first path output signal that is at least based on the first path intermediate signal with a second path output signal that is at least based on the second path intermediate signal.
5 Assignments
0 Petitions
Accused Products
Abstract
Methods and apparatus for implementing a wireless communication transceiver having receive path performance diversity. The transceiver implements a plurality of signal paths that can be configured as space diversity receive paths. Each of the plurality of signal paths includes a distinct RF filter. Each RF filter can be configured to provide a distinct frequency response, and in particular, a distinct jammer rejection profile. One of the RF filters can be configured to provide substantially no in-band jammer rejection. Each additional distinct RF filter can be configured to reject at least one distinct in-band jammer frequency or band of frequencies. A diversity receiver coherently combines the path performance diverse signals from each filter output. A transmitter can time division duplex transmit communications over at least a subset of the signal paths and their associated RF filters.
62 Citations
31 Claims
-
1. A method of receive path performance diversity, the method comprising:
-
receiving a first signal in a first signal path; band-pass filtering the first signal in the first signal path to attenuate frequencies outside of a first radio frequency (RF) operating band; filtering the band-pass filtered first signal, by notch filtering or band reject filtering, at one or more frequencies within the first RF operating band to attenuate one or more jamming signals and generate a first path intermediate signal; receiving a second signal in a second signal path; band-pass filtering the second signal in the second signal path to attenuate frequencies outside of the first RF operating band and generate a second path intermediate signal, wherein the first path intermediate signal is attenuated by said notch filtering or band reject filtering at one or more frequencies not attenuated in the second path intermediate signal; and combining a first path output signal that is at least based on the first path intermediate signal with a second path output signal that is at least based on the second path intermediate signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
-
-
10. A method of receive path performance diversity, the method comprising:
-
receiving signals via a plurality of antennas; band-pass filtering each received signal from each antenna of the plurality of antennas to attenuate frequencies outside of a first radio frequency (RF) operating band; filtering, by notch filtering or band reject filtering, at least one of the band-pass filtered signals at one or more frequencies within the first RF operating band to attenuate one or more jamming signals, wherein at least one of the filtered signals has a distinct set of frequencies attenuated by the notch filtering or band reject filtering than another filtered signal; and combining output signals that are derived from each filtered signal. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
-
-
18. An apparatus having receive path performance diversity, the apparatus comprising:
-
a first antenna configured to receive a first signal; a second antenna configured to receive a second signal; a first filter coupled to the first antenna and configured to band-pass filter the first signal to attenuate frequencies outside of a first radio frequency (RF) operating band, filter, by notch filtering or band reject filtering, the band-pass filtered first signal at one or more frequencies within the first RF operating band to attenuate one or more jamming signals, and generate a first intermediate signal; a second filter coupled to the second antenna and configured to band-pass filter the second signal to attenuate frequencies outside of the first radio frequency (RF) operating band, and generate a second intermediate signal, wherein the first intermediate signal is attenuated by said notch filtering or band reject filtering at one or more frequencies not attenuated in the second intermediate signal; and a combiner coupled to the first filter and second filter configured to combine output signals that are based on the first intermediate signal and the second intermediate signal. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25)
-
-
26. An apparatus having receive path performance diversity, the apparatus comprising:
-
a plurality of antennas configured to receive a plurality of signals; a plurality of filters coupled to the plurality of antennas and configured to band-pass filter each received signal from each antenna of the plurality of antennas to attenuate frequencies outside of a first radio frequency (RF) operating band; filter, by notch filtering or band reject filtering, at least one of the band pass filtered signals at one or more frequencies within the first RF operating band to attenuate one or more jamming signals, wherein at least one of the filtered signals has a distinct set of frequencies attenuated by the notch filtering or band reject filtering than another filtered signal, and generate a plurality of intermediate signals; a plurality of receivers coupled to the plurality of filters and configured to process the plurality of intermediate signals to generate a plurality of output signals; and a combiner coupled to the plurality of receivers and configured to combine the plurality of output signals. - View Dependent Claims (27, 28, 29, 30, 31)
-
Specification