Topic
Stub (electronics)
About: Stub (electronics) is a research topic. Over the lifetime, 8172 publications have been published within this topic receiving 75018 citations.
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TL;DR: In this paper, a novel and simple design of wideband coplanar waveguide (CPW)-fed bow-tie slot antennas with multiple band-stop characteristics featuring multi-network applications is presented.
Abstract: A novel and simple design of wideband coplanar waveguide (CPW)-fed bow-tie slot antennas with multiple band-stop characteristics featuring multi-network applications is presented. A frequency stop band can be created by embedding the slot with a pair of stubs, which causes the resultant magnetic fields almost counterbalance in the slot and to be non-responsive at the desire stop band. The effects of the dimensions of the stub on the stop band are also analysed. Dual band-stop characteristic is also accomplished by embedding two pairs of stubs in the slot. Details of the proposed designs and experimental results of the constructed prototypes are presented.
27 citations
18 Jun 1995
TL;DR: In this article, the concept of tunable dual and triple band microstrip antennas with nearly quarter wavelength monolithic stubs loaded at the radiating edges of the rectangular or square patch was proposed.
Abstract: Dual band printed microstrip antennas using single layer and multilayer patches have been reported. Triple band performance has been reported for a square patch antenna using a spurline filter and the perturbation technique. This paper proposes the concept of tunable dual and triple band microstrip antennas with nearly quarter wavelength monolithic stubs loaded at the radiating edges of the rectangular or square patch.
27 citations
03 Nov 1996
TL;DR: In this article, the design, fabrication, and experimental characteristics of InGaAs PIN diodes are presented for InP-based W-band monolithic integrated switches, and a radial stub-based design was used for on-chip biasing, and the high-frequency characteristics of the switches were verified by on-wafer Wband testing.
Abstract: The design, fabrication, and experimental characteristics of InGaAs PIN diodes are presented for InP-based W-band monolithic integrated switches The diodes with 10 /spl mu/m-diameter were used and showed a breakdown voltage of 17 V, a turn-on voltage of 036 V, and a switching cutoff frequency of 63 THz The monolithic integrated switches employed microstrip transmission lines and backside via holes for low-inductance signal grounding A radial stub-based design was used for on-chip biasing, and the high-frequency characteristics of the switches were verified by on-wafer W-band testing The SPST PIN monolithic switch demonstrated 25 dB isolation, 13 dB insertion loss, and 08 dB reflection loss at 83 GHz
27 citations
TL;DR: In this article, a compact high isolation ultrawideband (UWB) multiple-input-multiple-output (MIMO) antenna is designed, which consists of a rectangular monopole antenna and a slot antenna fed by two microstrip lines, respectively.
Abstract: A compact high isolation ultrawideband (UWB) multiple-input-multiple-output (MIMO) antenna is designed. The proposed MIMO antenna consists of a rectangular monopole antenna and a slot antenna fed by two microstrip lines, respectively. To improve the impedance matching, a circular coupling structure is designed to feed the tapered slot antenna. The parasitic resonance introduced by the ground stub helps to extend the impedance bandwidth of monopole antenna at the upper UWB band. Commonly used complex decoupling or coupling structures are eliminated that endow the proposed antenna minimized foot print, which is preferred in mobile handset. Although without decoupling structure, high isolation is obtained between two antenna elements. Simulation and measurement verify the antenna’s desirable performance, showing a broad impedance bandwidth of 3.1–10.6 GHz with |S11| < −10 dB and |S21| < −20 dB over 3.4–10.6 GHz, and |S21| < −18 dB from 3.1–3.4 GHz.
27 citations
Patent•
03 Jul 1986TL;DR: In this article, a multiband antenna mounting and feedline coupling arrangement with a first transmission line segment secured in a mounting device for the antenna for coupling energy to and from the antenna is presented.
Abstract: A multiband antenna mounting and feedline coupling arrangement includes a first transmission line segment secured in a mounting device for the antenna for coupling energy to and from the antenna. A second transmission line segment, extending, e.g., to grounded high band equipment, provides high band signal coupling with the first line and includes a direct current blocking capacitor in series in the ground return path of that second line segment, the capacitor having such a low impedance to high band energy that it presents negligible impedance to such energy. A third transmission line segment provides low band signal coupling with the first line by way of a part of the ground return path of the first line. A high band quarter wave, in the high band, filter stub transmission line is connected between the signal and ground return paths of the third transmission line adjacent to the point of coupling thereof to the first line. Several different implementations of the capacitor and transmission line segment combination are illustrated.
27 citations