An electronic device, comprising: an antenna; a first antenna feed at a first location in the antenna; a second antenna feed at a second location in the antenna; a first radio-frequency receiver that is configured to receive radio-frequency signals from the antenna in a first communications band; and a second radio-frequency receiver that is configured to receive radio-frequency signals from the antenna in a second communications band, a first filter coupled between the first radio-frequency receiver and the first antenna feed, wherein the first filter is configured to pass the radio-frequency signals in the first communications band and is configured to block the radio-frequency signals in the second communications band; and a second filter coupled between the second radio-frequency receiver and the second antenna feed, wherein the second filter is configured to pass the radio-frequency signals in the second communications band and is configured to block the radio-frequency signals in the first communications band, characterized in that: the second filter comprises a notch filter; and the electronic device further comprises: a signal path between the second filter and the second radio frequency receiver; an additional antenna; and an antenna selection switch interposed in the signal path, wherein the antenna selection switch is coupled to the additional antenna. an antenna; a first antenna feed at a first location in the antenna; a second antenna feed at a second location in the antenna; a first radio-frequency receiver that is configured to receive radio-frequency signals from the antenna in a first communications band; and a second radio-frequency receiver that is configured to receive radio-frequency signals from the antenna in a second communications band, a first filter coupled between the first radio-frequency receiver and the first antenna feed, wherein the first filter is configured to pass the radio-frequency signals in the first communications band and is configured to block the radio-frequency signals in the second communications band; and a second filter coupled between the second radio-frequency receiver and the second antenna feed, wherein the second filter is configured to pass the radio-frequency signals in the second communications band and is configured to block the radio-frequency signals in the first communications band, a second antenna feed at a second location in the antenna; a first radio-frequency receiver that is configured to receive radio-frequency signals from the antenna in a first communications band; and a second radio-frequency receiver that is configured to receive radio-frequency signals from the antenna in a second communications band, a first filter coupled between the first radio-frequency receiver and the first antenna feed, wherein the first filter is configured to pass the radio-frequency signals in the first communications band and is configured to block the radio-frequency signals in the second communications band; and a second filter coupled between the second radio-frequency receiver and the second antenna feed, wherein the second filter is configured to pass the radio-frequency signals in the second communications band and is configured to block the radio-frequency signals in the first communications band, characterized in that: the second filter comprises a notch filter; and the second filter comprises a notch filter; and the electronic device further comprises: a signal path between the second filter and the second radio frequency receiver; an additional antenna; and an antenna selection switch interposed in the signal path, wherein the antenna selection switch is coupled to the additional antenna. a signal path between the second filter and the second radio frequency receiver; an additional antenna; and an antenna selection switch interposed in the signal path, wherein the antenna selection switch is coupled to the additional antenna.