In gap waveguide technology, a guiding structure, suchas groove [10], ridge [9], or inverted microstrip line [11],is created between two parallel plates by using an EBGstructure, i.e., a periodic pin texture, to control the direc-tion of propagation and preventing any field leakage withoutthe need of electrical contact between the building blocks.This provides a flexible and cost-effective fabrication, andFig. 3. Coupling diagram of a hybrid diplexer-splitter with a fifth-orderdivider network and fifth-order channel filters.mechanical assembly. The advantages of this technology todesign high-gain millimeter-wave array antennas [12]–[16],bandpass filters [17]–[24], array antenna, and passive compo-nents integration [25]–[27] have been shown in the past fewyears.In this paper, we try to show the advantages of gapwaveguide technology from the complete system design,integration, and packaging point of views. Due to the com-plexity of the proposed integrated radio front-end module,we have initially designed and verified the performance ofeach building block separately. The following sections presentthe detailed design and measured performance for each criticalcomponent within the system.