Arrangement for separating transmission and reception
February 9, 2015. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesTerminated switch Combined multi-port transmit/receive switch and filter Broadband RF transmit/receive switch Millimeter wave microstrip shunt-mounted pin diode switch with particular bias means Single-block filter for antenna duplexing and antenna-summed diversity Signal transmission reception switching apparatus Transmission-reception separating filter with a PIN diode Single-block filter for antenna duplexing and antenna-switched diversity Antenna sharing device using mutually coupled resonant circuits Duplex filter operating as a change-over switch Patent #: 5387886 InventorsApplicationNo. 386018 filed on 02/09/1995US Classes:333/103, Having semiconductor operating means333/104, Using TEM lines455/80, With distributed parameter coupling455/83Single antenna switched between transmitter and receiverExaminersPrimary: Gensler, PaulAttorney, Agent or FirmForeign Patent References
International ClassesH01P 001/15H04B 001/44 Foreign Application Priority Data1994-02-09 FIAbstractThe present invention relates to an arrangement for separating transmission and reception accomplished through one and same antenna (A) in a transceiver, said arrangement comprising a filter and a switching element (K) and being provided with a common port to be coupled to the antenna (A), a transmitter branch (TX) port (T) to be coupled to the transmitter of the transceiver and a receiver branch port (RX) port (R) to be coupled to the receiver of the transceiver, and in which, as a response to a control signal, the switching element couples operationally to the common port alternatively the transmitter branch port (T) and the receiver branch port (R). The arrangement comprises a filter (ST,SF,S1,S2) including transmission line resonators, said filter being provided with adaptation couplings to be coupled to the transmission line resonators and for accomplishing couplings between the transmission line resonators. The adaptation couplings comprise an impedance adaptation circuit comprised of discrete components for adapting the filter to the antenna. The switching element (K, KT, KF) includes parts of the adaptation couplings of the filter, whereby the switching element is connected to the filter utilizing the adaptation couplings thereof and said impedance adaptation circuit is arranged in the switching element to serve as a phase shifter.Other References
Field of SearchIncluding switching meansHaving semiconductor operating means Using TEM lines Having mechanical switching means TRANSMITTER AND RECEIVER AT SAME STATION (E.G., TRANSCEIVER) With transmitter-receiver switching or interaction prevention Automatic (e.g., voice operated) With distributed parameter coupling Common antenna Single antenna switched between transmitter and receiver | |
