摘要:
A mobile wireless communications device may include a housing, a wireless receiver carried by the housing and configured to receive communication signals over a wireless frequency range, a wireline transmitter carried by the housing and configured to transmit communication signals overlapping in frequency with the wireless frequency range, and a controller carried by the housing and coupled with the wireless receiver and the wireline transmitter. The controller may be configured to determine when the wireless receiver is to begin receiving and, based thereon, switch the wireline transmitter to a suspended communication mode during which transmission is disabled. The controller may also be configured to determine when the wireless receiver has completed receiving and, based thereon, switch the wireline transmitter to a normal communication mode in which transmission is enabled.
摘要:
A concurrent hybrid matching network is disclosed. In an exemplary embodiment, an apparatus includes a phase shifting coupler having a first terminal connected to an antenna, a second terminal connected to a receive signal path, and third terminal connected to a transmit signal path. The apparatus also includes at least one switch to configured to enable one of the receive signal path and the transmit signal path to communicate with the antenna.
摘要:
Method and radio node (500) for controlling a change of communication mode between transmit mode and receive mode according to a Time Division Duplex, TDD, scheme. The radio node has at least two parallel branches (504, 06) for transmission and reception of radio signals, wherein the branches currently operate in a first communication mode. The radio node obtains one or more indication signals (S1A, S1B) generated by one or more of the branches to indicate that the first mode has been turned off. When it is determined that the first communication mode has not been turned off in a faulty branch, e.g. by not receiving an indication signal in time from that branch, the first mode is disabled in the faulty branch, and/or the faulty branch is reported to a supervision center (510). Thereby, it can be discovered when one of the branches is misaligned or otherwise faulty and suitable actions can be taken for repairing or replacing the faulty branch.
摘要:
A high-frequency module (10) includes a first switch element (21) and a second switch element (22) that are mounted on a multilayer body (100). The first switch element (21) is equipped with a common terminal (Pc1) and individual terminals (Pi11, Pi12, Pi13 and Pi14). The second switch element (22) is equipped with a common terminal (Pc2) and individual terminals (Pi21, Pi22, Pi23 and Pi24). The individual terminals (Pi11, Pi12, Pi13, Pi21, Pi22 and Pi23) are connected to any of SAW filters (411, 412, 421 and 422) mounted on the multilayer body (100) or low loss filters (31 and 32) formed inside the multilayer body (100). The individual terminals (Pi14 and Pi24) are grounded by being connected to an inner layer ground electrode (DPG01) inside the multilayer body (100) by conductive via holes (131 and 132).
摘要:
This disclosure provides systems, methods, and apparatus for an initial network acquisition process via multiple antennas. In one aspect a method of establishing communications via a wireless network at a wireless communications apparatus is provided. The method includes attempting an initial acquisition process, over one or more frequencies, for establishing communications over the wireless network via a transmit circuit and a receive circuit transmitting and receiving via a first antenna. The method further includes switching the transmit circuit and the receive circuit from transmitting and receiving via the first antenna to a second antenna in response to detecting failure of the initial acquisition process. The switching is independent of a performance metric of the first or the second antenna. The method further includes re-attempting the initial acquisition process based on the switching to the second antenna over the one or more frequencies.
摘要:
A transceiver 400 is provided in an ultrawide bandwidth device, which includes an antenna 110, a transmitter circuit 145, and a receiver circuit 165. A transmitter amplifier 440 is provided between the antenna 110 and the transmitter circuit 145, and is configured to have an operational transmitter output impedance when the transceiver 400 is in a transmit mode and an isolation transmitter output impedance when the transceiver 400 is in a receive mode. A receiver amplifier 460 is provided between the antenna 110 and the receiver circuit 165, and is configured to have an operational receiver input impedance when the transceiver 400 is in a receive mode and an isolation receiver input impedance when the transceiver 400 is in a transmit mode. The isolation transmitter output impedance is greater than the operational receiver input impedance, and the isolation receiver input impedance is greater than the operational transmitter output impedance. Thus, a transmitter and receiver can be isolated without using a transmit/receive switch.
摘要:
Certain aspects and aspects of the present invention are directed to a distributed antenna system having a downlink communication path, an uplink communication path, and a non-duplexer isolator sub-system. The downlink communication path can communicatively couple a transmit antenna to a base station. The uplink communication path can communicatively couple a receive antenna to the base station. In one aspect, the non-duplexer isolator sub-system can be electronically configured for isolating uplink signals traversing the uplink communication path from downlink signals. In another aspect, a non-duplexer isolator sub-system can be configurable in one or more mechanical steps selecting a frequency response. In another aspect, a non-duplexer isolator sub-system can include an active mitigation sub-system.
摘要:
In an exemplary embodiment, a phased array antenna comprises a bidirectional antenna polarizer and is configured for bidirectional operation. The bidirectional antenna polarizer may combine active implementations of power splitters, power combiners, and phase shifters. Furthermore, in another exemplary embodiment a bidirectional antenna polarizer has extensive system flexibility and field reconfigurability. In yet another exemplary embodiment, the bidirectional phased array antenna operates in “radar-like” applications where the transmit and receive functions operate in half-duplex fashion. Furthermore, in exemplary embodiments, the phased array antenna is configured to operate over multiple frequency bands and/or multiple polarizations.