Topic
Stub (electronics)
About: Stub (electronics) is a research topic. Over the lifetime, 8172 publications have been published within this topic receiving 75018 citations.
Papers published on a yearly basis
Papers
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TL;DR: In this paper, a hexagonal shape patch protrudes from a Co-Planar Waveguide (CPW) feed into a step shape slot and is extended by inserting rectangular cuts of different sizes on the ground plane around it.
Abstract: A compact slot antenna with an overall dimension of 30 × 30 × 1.6 mm3 is proposed for dual band applications. The radiating element is a hexagonal shape patch which protrudes from a Co-Planar Waveguide (CPW) feed into a step shape slot. The slot is basically rectangular in shape and is extended by inserting rectangular cuts of different sizes on the ground plane around it. The ultrawide impedance bandwidth is achieved using asymmetric feed line along with extended rectangular cuts around the slot. For realizing the second band for personal communication system applications (near 1.9 GHz), a metallic stub of quarter wave length is attached at the top of the slot. The measured impedance bandwidth (for S11 < −10 dB) is 110 MHz (1.86–1.97 GHz) for the first band and 9 GHz (3.0–12.0 GHz) for the second band. The antenna is further characterized by omnidirectional radiation patterns in the H-plane, dumb-bell shape radiation patterns in the E-plane and a peak gain of 3–5 dBi over the ultrawideband. All the measured results are found to be in good agreement with the simulated results. © 2014 Wiley Periodicals, Inc. Int J RF and Microwave CAE 25:243–254, 2015.
21 citations
TL;DR: In this article, the compressive behavior of stub steel tubes at the low temperatures relating to cold region environment was reported. And the test results revealed that current slenderness limit for Class 3 type of square cross section is less conservative at low temperatures due that the increased yield strength delays the occurrence of local buckling.
21 citations
TL;DR: In this paper, an accurate design technique for a low-pass filter with a dumbbell-shaped slot (DSS) in the ground plane is presented, where a new simplified DSS inductance equation is suggested and modified to account for the stub parasitic inductance of the LPF.
Abstract: This paper presents an accurate design technique for a low-pass filter (LPF) with a dumbbell-shaped slot (DSS) in the ground plane. In the proposed technique, a new simplified DSS inductance equation is suggested and modified to account for the stub parasitic inductance of the LPF. The compensated inductance of the DSS is determined from the modified DSS inductance equation. As a result, additional tuning is not required to achieve the desired LPF cutoff frequency. The stub section of the LPF is analyzed by transmission line theory to derive the stub parasitic inductance equation. 3-D electromagnetic field and circuit simulation validate the theoretical analysis. Two LPFs are designed, simulated, measured, and compared for further validation. One LPF is designed through a conventional method and the other through the proposed method. Both simulated and measured results show very good agreement in the proposed design.
21 citations
TL;DR: In this article, a theoretical analysis involving estimation of the shape and size of the device under gate biases and computation of the transmission probabilities from numerical analysis of the Schrodinger equation successfully explains the main features of the experimental observations.
Abstract: Ballistic transport of electrons through T-shaped quantum waveguides with stubs of small lithographic area (0.075 μm2) has been studied. Measurements of the conductance G at 90 mK as a function of the top gate voltage, which changes the stub height, show well-defined, almost periodic oscillations in G. A theoretical analysis, involving estimation of the shape and size of the device under gate biases and computation of the transmission probabilities from numerical analysis of the Schrodinger equation, successfully explains the main features of the experimental observations. The observed minima in G can be attributed to reflection resonances of electron waves from the resonant states of the stub cavity. This work establishes the potential of electron stub tuners in microelectronics applications.
21 citations
17 Jun 2012
TL;DR: In this article, a dual-band C-band low-phase noise oscillator using a reconfigurable cavity-backed complementary split-ring resonator (CSRR) is proposed and developed based on the substrate integrated waveguide (SIW) technology.
Abstract: A novel C-band low phase noise dual-band oscillator using a reconfigurable cavity-backed complementary split-ring resonator (CSRR) is proposed and developed based on the substrate integrated waveguide (SIW) technology. The resonator consists of a PIN diode switch and a CSRR resonator embedded in an SIW cavity. It is able to provide two different resonance frequencies by selecting different diode modes. A switchable matching stub is used for matching each of the two states. Measured results show that the proposed oscillator is able to operate at 2.675 and 3.77 GHz, respectively, with a phase noise of 105.5 and 99.6 dBc/Hz at a 100 KHz offset.
21 citations