公开(公告)号：US07102460B2

公开(公告)日：2006-09-05

申请号：US10826089

申请日：2004-04-16

Applicant: Edgar Schmidhammer ,  Pasi Tikka

Inventor： Edgar Schmidhammer ,  Pasi Tikka

IPC: H03H9/70 ,  H03H9/72

CPC classification number: H03H9/706 ,  H03H9/0038 ,  H03H9/0095 ,  H03H9/0571 ,  H03H9/0576 ,  H03H9/584 ,  H03H9/587 ,  H03H9/589 ,  H03H9/72 ,  H03H9/725

Abstract: A duplexer has an asymmetrical antenna port and a symmetrical reception output, and therefore can be interconnected (without any intermediate stages) to an amplifier with a differential input. A reception bandpass filter is arranged in the reception path of the duplexer. The reception bandpass filter can have the functionality of a balun. The transmission input of the duplexer can be designed symmetrically, in which case a transmission bandpass filter arranged in the transmission path should be designed symmetrically on the input side. The impedance of the antenna port of the duplexer can differ from the impedance of the reception output or the transmission input. No intermediate stages (such as a balun or—in cases of impedances that differ between the duplexer and its corresponding amplifier—an impedance transformer) are required between the duplexer and the amplifier that is interconnected (whether before or after) in the transmission or reception path.

Abstract translation: 双工器具有不对称的天线端口和对称的接收输出，因此可以与具有差分输入的放大器互连（无任何中间级）。 接收带通滤波器布置在双工器的接收路径中。 接收带通滤波器可以具有巴伦的功能。 可以对称地设计双工器的传输输入，在这种情况下，布置在传输路径中的传输带通滤波器应该在输入侧对称地设计。 双工器的天线端口的阻抗可以不同于接收输出或传输输入的阻抗。 在双工器和在发送或接收中互连（无论是在前还是之后）的放大器之间都不需要中间级（例如平衡 - 不平衡变换器或 - 在双工器和其对应的放大器之间不同的阻抗 - 阻抗变换器） 路径。

公开(公告)号：US20060194550A1

公开(公告)日：2006-08-31

申请号：US10552926

申请日：2004-02-02

Applicant: Christian Block ,  Enrico Leitschak ,  Arne Eckau ,  Holger Fluehr ,  Kurt Wiesbauer ,  Peter Hagn ,  Edgar Schmidhammer

Inventor： Christian Block ,  Enrico Leitschak ,  Arne Eckau ,  Holger Fluehr ,  Kurt Wiesbauer ,  Peter Hagn ,  Edgar Schmidhammer

IPC: H04B1/44

CPC classification number: H04B1/005 ,  H04B1/406 ,  H04B1/48 ,  H04B1/50 ,  H04B1/54

Abstract: A functional block of a front-end circuit for a communication device, which is employed for multi-band and/or multi-mode operation, is proposed. By positioning, according to this invention, a pin diode switch in one of the parallel signal paths instead of positioning it on the input side before separating the signal paths, it is possible to do without an impedance transformation network on the input side and to thus reduce the signal loss and the space requirement of the circuit. In a further configuration, the signal paths preferably associated with the adjacent frequency bands are combined on the output side, whereby the further processing of the signals corresponding to the different frequency bands takes place in one path. This for example allows a chip set designed for (n−1) frequency bands to be used in a transmission system designed for n bands. Another embodiment of this invention enables monitoring of the received signal of a system even during operation of the other mode in a multi-mode system. Stable electrical properties of the circuit can be achieved according to this invention through integration of all components of the front-end circuit in one module.

Abstract translation: 提出了用于多频带和/或多模式操作的用于通信设备的前端电路的功能块。 根据本发明，通过在分离信号路径之前定位一个并行信号路径中的pin二极管开关，而不是将其定位在输入侧，可以在输入侧没有阻抗变换网络，并因此 降低电路的信号损耗和空间要求。 在另一配置中，优选地与相邻频带相关联的信号路径被组合在输出侧，由此对于不同频带的信号的进一步处理在一个路径中进行。 例如，允许为（n-1）个频带设计的芯片组用于为n个频带设计的传输系统。 本发明的另一实施例即使在多模式系统中的其他模式的操作期间也能够监视系统的接收信号。 通过将前端电路的所有部件集成在一个模块中，可以实现根据本发明的电路的稳定的电性能。