US 12,407,372 B2
Transceiver switch circuitry
Imad ud Din, Flyinge (SE); Christian Elgaard, Lund (SE); and Stefan Andersson, Flyinge (SE)
Assigned to Telefonaktiebolaget LM Ericsson (Publ), Stockholm (SE)
Appl. No. 18/245,985
Filed by Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)
PCT Filed Sep. 30, 2020, PCT No. PCT/EP2020/077432
§ 371(c)(1), (2) Date Mar. 20, 2023,
PCT Pub. No. WO2022/069038, PCT Pub. Date Apr. 7, 2022.
Prior Publication US 2023/0353187 A1, Nov. 2, 2023
Int. Cl. H04B 1/44 (2006.01); H04B 1/00 (2006.01); H04B 1/54 (2006.01)
CPC H04B 1/44 (2013.01) [H04B 1/0053 (2013.01); H04B 1/54 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A transceiver switch circuitry comprising:
an antenna port connectable to an antenna circuitry;
a receiver port connectable to a receiver circuitry;
a first amplifier port connectable to a first amplifier circuitry;
at least one second amplifier port connectable to at least one second amplifier circuitry;
the transceiver switch circuitry being configured to be operable in a reception mode to allow reception signals at the antenna port to be forwarded to the receiver port, and configured to be operable in a transmission mode to allow transmission of transmission signals at the first amplifier port and the at least one second amplifier port to be forwarded to the antenna port for transmission, the transmission signals having a transmission center frequency with a wavelength, λ, and the reception signals having a reception center frequency within ten percent of the transmission center frequency;
a receive arrangement connected between the antenna port and the receiver port, the receive arrangement comprising a receiver quarter wavelength, λ/4, impedance transformer and a receiver switch circuitry configured to ground the receiver quarter wavelength, λ/4, impedance transformer at the receiver port in the transmission mode; and
a transmit arrangement connected between the antenna port, the first amplifier port and the at least one second amplifier port, the transmit arrangement comprising a first, a second and a third transmitter quarter wavelength, λ/4, impedance transformer, the first transmitter quarter wavelength, λ/4, impedance transformer having a first side connected to the antenna port and a second side connected to a first side of the second transmitter quarter wavelength, λ/4, impedance transformer, and the third transmitter quarter wavelength, λ/4, impedance transformer having a first side connected to a second side of the second transmitter quarter wavelength, λ/4, impedance transformer and a second side connected to a DC supply voltage, Vdd;
the first amplifier port is being connected via a first transmitter switch circuitry to the second side of the second transmitter quarter wavelength, λ/4, impedance transformer;
the at least one second amplifier port is connected via a second transmitter switch circuitry to the second side of the first transmitter quarter wavelength, λ/4, impedance transformer; and
the first and second transmitter switch circuitry being configured to disconnect the first amplifier port and the at least one second amplifier port from the respective transmitter quarter wavelength, λ/4, impedance transformer in the reception mode.