Software defined radio implementation is required for LTE (Long Term Evolution) radio transceivers. An SDR (Source Demand Routing) consists of an rf front end and a Digital Processor Platform (DSP). This paper is devoted to the design and implementation of the passive part of the front end; the antennas and bandpass filters. It presents the design of two microstrip patch antennas and a third order parallel coupled band pass filter with defected ground structure that can be used in cellular communication applications, especially in LTE. The two antennas cover LTE network bands.