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A compact dual-band rectangular ring printed antenna for wireless local area network (WLAN) applications is proposed and investigated in this paper. The dual-band is realized by using a rectangular ring patch connected with a 50Ω mini-coaxial feed structure composed of a longitudinal slot and a small rectangular, occupying a small board space of 30.6mm∗6mm on the system circuit board. With a modified...
This paper presents a planar monopole antenna with dual-band character for WLAN/Wi-Fi application. It can obtain the impedance bandwidths of 2.30–2.49 and 4.70–5.90 GHz with S11 less than −10 dB. The overall dimension of this antenna is 30 × 26mm 2. The antenna is printed on the substrate of FR4 with two “C”-shaped strips and a microstrip feed line on the front side and the ground plane on the flip...
High-Q tunable filters are in demand in both wireless and satellite applications. The need for tunability and configurability in wireless systems arises when deploying different systems that coexist geographically. Such deployments take place regularly when an operator has already installed a network and needs to add a new-generation network, for example, to add a long-term evolution (LTE) network...
This paper presents the design and implementation of an evanescent tunable combline filter based on electronic tuning with the use of RF-MEMS capacitor banks. The use of MEMS tuning circuit results in the compact implementation of the proposed filter with high-Q and near to zero DC power consumption. The proposed filter consist of combline resonators with tuning disks that are loaded with RF-MEMS...
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