-
公开(公告)号：EP1643593B1
公开(公告)日：2011-01-12
申请号：EP04255959.1
申请日：2004-09-29
Inventor： Fischer, Georg , Pivit, Florian
-
公开(公告)号：EP2058993B1
公开(公告)日：2010-04-07
申请号：EP07291354.4
申请日：2007-11-12
Applicant: LUCENT TECHNOLOGIES INC.
Inventor： Pivit, Florian , Hesselbarth, Jan , Fischer, Georg , Chalermwisutkul, Suramate
CPC classification number: H04L25/03828 , H03F3/2171 , H03F3/245 , H04L27/00
-
公开(公告)号：EP2058993A1
公开(公告)日：2009-05-13
申请号：EP07291354.4
申请日：2007-11-12
Applicant: LUCENT TECHNOLOGIES INC.
Inventor： Pivit, Florian , Hesselbarth, Jan , Fischer, Georg , Chalermwisutkul, Suramate
CPC classification number: H04L25/03828 , H03F3/2171 , H03F3/245 , H04L27/00
Abstract: The invention concerns a radio frequency transmitter (RFT) and a method of amplifying a radio frequency input signal (S IN ) in the radio frequency transmitter (RFT). The radio frequency transmitter (RFT) comprises a digital signal generator (DSG) with a generation unit (GU) adapted to generate a pulsed bit stream signal and a switch mode power amplifier (SMPA) with a transistor circuit (PT) adapted to amplify the radio frequency input signal (S IN ). The digital signal generator (DSG) further comprises a control unit (CU) adapted to detect in said pulsed bit stream signal a sequence of a constant signal height longer than a predefined threshold. The control unit (CU) is also adapted to initiate, upon detection of said sequence, a generation of a modified pulsed bit stream signal by an insertion of one or more notches in said sequence. Said notches interrupt said sequence by a signal of a signal height different from the signal height of the sequence. The radio frequency transmitter (RFT) further comprises connecting means (CM) adapted to provide said transistor circuit (PT) with said modified pulsed bit stream signal as the radio frequency input signal (S IN ).
Abstract translation: 本发明涉及射频发射机（RFT）和放大射频发射机（RFT）中的射频输入信号（S IN）的方法。 射频发射器（RFT）包括具有适于产生脉冲比特流信号的生成单元（GU）的数字信号发生器（DSG）和具有适于放大所述脉冲位流信号的晶体管电路（PT）的开关模式功率放大器（SMPA） 射频输入信号（S IN）。 数字信号发生器（DSG）还包括适于在所述脉冲比特流信号中检测长于预定阈值的恒定信号高度的序列的控制单元（CU）。 控制单元（CU）还适于在检测到所述序列时通过在所述序列中插入一个或多个凹口来发起修改的脉冲比特流信号的产生。 所述切口通过与序列的信号高度不同的信号高度的信号来中断所述序列。 射频发射机（RFT）还包括适于向所述晶体管电路（PT）提供所述修改的脉冲比特流信号作为射频输入信号（S IN）的连接装置（CM）。
-
公开(公告)号：EP1643593A1
公开(公告)日：2006-04-05
申请号：EP04255959.1
申请日：2004-09-29
Inventor： Fischer, Georg , Pivit, Florian
Abstract: A wide-bandwidth aperture antenna is constructed of two parallel metal plates 51, 52, each having a resonant aperture 53, 54. The apertured plates are arranged parallel to one another, with the apertures aligned. A third plate 57 is arranged parallel to the apertured plates to act as a reflector. The resonant apertures are in the form of squares with rounded corners. Feed stubs 55 and 56 are arranged between the apertured plates and project into the region between the apertures to excite orthogonally polarized modes. The feed stubs are in the form of strips which are aligned in planes perpendicular to the planes of the apertured plates. An exemplary embodiment has a bandwidth of 1700MHz to 3300MHz, containing the bands used for GSM 1800, UMTS, UMTS+, Bluetooth and WLAN systems. The feed is high-impedance and the decoupling better than -11 dB over the whole bandwidth.
Abstract translation: 宽带隙天线由两个平行的金属板51,52构成，每个金属板具有共振孔53,54。多孔板彼此平行地布置，孔对准。 第三板57平行于多孔板布置以用作反射器。 谐振孔是具有圆角的正方形。 进料柱55和56布置在有孔板之间并且突出到孔之间的区域中以激发正交极化模式。 进料柱是带状的形式，其在与多孔板的平面垂直的平面中对准。 示例性实施例具有1700MHz至3300MHz的带宽，其包含用于GSM 1800，UMTS，UMTS +，蓝牙和WLAN系统的频带。 馈电是高阻抗，并且在整个带宽上的去耦比-11dB更好。
-
-
-
Search Results
4
records
(took 0.024 seconds)
