Compact design of diplexer for base stations operating within frequency bands 2.3–2.4/2.49–2.69 GHz

Design of Compact Multi-Channel Diplexer Using Defected Microstrip Structure

In this paper, two compact quad-channel and six-channel diplexer are designed and fabricated using defected microstrip structure (DMS). This structure is designed for the desired frequency based on the literature reviews. The proposed configuration is composed of a conventional T-junction divider with two pairs of open bended stubs and dual/tri-band filters. In designing dual band filters, a lo...

Compact massive MIMO antenna array for small 5G base stations

Interference mitigation techniques for use by high altitude platform stations in the 27.5-28.35 GHz and 31.0-31.3 GHz bands

Impact of rainfall on natural attenuation of diesel and waste oil within urban base transceiver stations

BACKGROUND AND OBJECTIVES: Very low grid power penetration in some urban areas has led to telecoms companies investing massively in the deployment of diesel generators (DGs). These deployments have led to diesel and waste oil spill at base transceiver station (BTS) sites during maintenance cycles, impacting the environment and human activities. The objective of this study is to...

Compact Broadband MMIC Schottky Frequency Tripler for 75 – 140 GHz

In this paper a monolithically integrated frequency tripler based on an antiparallel pair of Schottky diodes is presented. The tripler is designed for flat output power response and wide frequency range. With 2 mW of input power the tripler covers the frequency range of 75 – 140 GHz (bandwidth 60 %) delivering output power between -19.4 dBm and -14.7 dBm with an average efficiency of 1.1 %. The...