Telefonaktiebolaget Lm Ericsson (publ)

Yongbin Liu

Ying Li

Anatoli Deleniv

Jianlan Li

Sven Patrik Lindell

Juandi Song

Yuhua Xiao

Mengyang Jia

Yasong Zhang

The present disclosure provides a device for signal delay. The device comprises: a frame of insulation material; multiple signal electrodes provided in the frame and electrically connected to each other in series; an input terminal electrically connected to a first of the multiple signal electrodes and configured to receive an input signal; and an output terminal electrically connected to a second of the multiple signal electrodes and configured to output an output signal that is delayed by the multiple signal electrodes with respect to the input signal, wherein at least one of the multiple signal electrodes is located at a different height than those of other signal electrodes with respect to a surface on which the device is to be mounted.

Signal delay device with reduced size

An antenna unit, a radio unit, and a base station are disclosed. The antenna unit or the radio unit includes a plurality of filters, each having a respective radio frequency passband. At least one first filter is a CWG filter. The first filter is coupled to a second filter through a T-junction formed on an antenna board or a radio mother board.

AU and RU having CWG filters, and BS having the AU or RU

A ceramic waveguide filter, a radio unit, an antenna unit and a base station are disclosed. According to an embodiment, a ceramic waveguide filter comprises a body () that is made of a ceramic material and that has a plurality of resonators each including a blind hole (). The blind holes () of two of the resonators open at a first surface of the body () and extend toward an opposite second surface of the body (). Capacitive coupling between the two resonators is achieved by a coupling structure () on/in a substrate (), to which the body () is attached at the side of the second surface.

CWG filter, and RU, AU or BS having the same

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Beijing, China

Yongbin Liu