Results 171 to 180 of about 2,969 (215)

Improved tunable coplanar waveguide (CPW) bandstop filter

Microwave and Optical Technology Letters, 2004
AbstractAn improved tunable coplanar waveguide (CPW) bandstop filter, which exhibits good performance, is proposed in this paper. A novel tunable open stub and a useful formula for frequency shift and impedances are also presented. Further, air bridges and a special method of step compensation in the angle bends are employed to overcome differences in ...
Man-Long Her
exaly   +2 more sources

Improved coplanar waveguide (CPW) bandstop filter with photonic bandgap (PBG) structure

Microwave and Optical Technology Letters, 2003
AbstractA new doubly tapered photonic bandgap (DT‐PBG) technique in both planar and cylindrical coplanar waveguide (CCPW) structures is proposed and analyzed. The DT‐PBG structure of a coplanar waveguide (CPW) bandstop filter not only can reduce the passband ripple but can also increase the stopband rejection bandwidth without degrading the upper ...
Man‐Long Her, Chin‐Min Chang, Yu‐Zhen Wang, Fan‐Hsi Kung, Yi‐Chyun Chiou   +4 more
exaly   +2 more sources

A Novel Harmonic Suppressed Coplanar Waveguide (CPW)-Fed Slot Antenna

IEEE Antennas and Wireless Propagation Letters, 2011
A novel open-ended ungrounded coplanar waveguide (CPW)-fed slot antenna for broadband harmonic suppression is presented. By employing two folded L-shaped slots into the surrounding ground planes, a fundamental resonance at 2.4-GHz WLAN along with its third harmonic is obtained. To suppress the harmonic, a technique with low design complexity, including
Mohammad Saeid Ghaffarian, Gholamreza Moradi   +1 more
exaly   +2 more sources

Coplanar waveguide (CPW) defected ground structure (DGS) for bandpass filter application

Microwave and Optical Technology Letters, 2004
AbstractIn this paper, we design and implement a coplanar waveguide (CPW) bandpass filter utilizing defected ground structure (DGS) technology. The CPW DGS technology, which only needs one or a series connection of a few cells to exhibit the bandgap characteristics, can provide the attenuation poles in the upper and lower bands to improve the rolloff ...
Man-Long Her
exaly   +2 more sources

Loss Measurement of Aluminum Thin-Film Coplanar Waveguide (CPW) Lines at Microwave Frequencies

IEEE Transactions on Electron Devices, 2010
To investigate coplanar waveguide (CPW) attenuation in monolithic microwave integrated circuits, measurements are carried out within 15-26 GHz on several CPW resonators with different metal thicknesses ranging from 200 to 2300 nm. In these experiments, the thin metal layers are made of aluminum.
Mahmoud Shahabadi, S Mohajerzadeh
exaly   +2 more sources

A new coplanar waveguide continuous transverse stub (CPW-CTS) antenna for wireless communications

IEEE Antennas and Wireless Propagation Letters, 2005
To address the continuing demand for low-cost, light-weight and high-performance antennas, and multiband antenna arrays for wireless communications, we developed a new design of the continuous transverse stub (CTS) antenna technology. The design is based on a coplanar waveguide (CPW) feed which combines the advantages of the planar designs originally ...
Wayne Kim
exaly   +2 more sources

Simulation and analysis of coplanar waveguide(CPW) discontinuities

2008 International Conference on Recent Advances in Microwave Theory and Applications, 2008
In most devices on printed circuit boards (PCBs), there are many types of micro strip transmission line and coplanar waveguide (CPW) discontinuities, such as steps, air gaps, bends, etc. These discontinuities have strong effects on the signal transmission and reflection.
D. Sriram kumar, A. Srinivas, G. Ratnakar   +2 more
openaire   +1 more source

A comparison of the coplanar waveguide (CPW) and conductor-backed coplanar waveguide (CBCPW) for use as aircraft ice sensors

2006 IEEE Antennas and Propagation Society International Symposium, 2006
A numerical comparison of the coplanar waveguide (CPW) and the conductor-backed coplanar waveguide (CBCPW) as ice sensors is presented. Analysis is performed using design equations obtained by quasistatic assumptions and conformal mapping techniques. It is shown that dielectric materials placed on top of the sensors affect the characteristics of the ...
C.E. Bassey, G.R. Simpson
openaire   +1 more source

The coplanar waveguide (CPW) technique for wideband dielectric measurement: a new concept

Proceedings of Conference on Precision Electromagnetic Measurements Digest, 1994
A novel concept stemming from the coplanar waveguide (CPW) technique is proposed for wideband dielectric measurement in the frequency range up to millimeter-waves. The new approach uses surface fields of the coupled CPW slots which interact dynamically with lossless or highly lossy material under test.
Ke Wu, D. Maurin, C. Akyel, R.G. Bosisio
openaire   +1 more source

Lossy effects on the transient propagation in LTCC coplanar waveguides (CPWs)

Microwave and Optical Technology Letters, 2003
AbstractThe effects of dielectric, radiative leakage and ohmic losses in CPWs on the propagation of Gaussian and sinusoidally modulated Gaussian pulses are investigated. These CPWs are assumed to be fabricated on a single‐layer low‐temperature co‐fired ceramic (LTCC) substrate.
Yin, W.Y., Guo, B., Dong, X.T., Gan, Y.B.   +3 more
openaire   +1 more source