The design of compact unbalanced-/balanced-to- unbalanced diplexer (U2U/B2U) based on full dual-mode dielectric resonator (DR) is investigated for the first time. relationships external quality factors ( Q e ) under two modes are analyzed. It found that can be controlled independently, which mak...

Simultaneous wireless information and power transfer (SWIPT) is an appealing research area because both information and energy can be delivered to wireless devices simultaneously. In this paper, we propose a diplexer-based receiver architecture that can utilizes both the doubling frequency and baseband signals after the mixer. The baseband signals are used for information decoding and the doubl...

A two-dimensional photonic crystal diplexer integrated with a waveguide coupler is proposed. The design is computer generated through an inverse design process, limited within an area measuring 5 mumx5 mum. The best working device was designed for the optical communication wavelengths, 1.50 mum and 1.55 mum, i.e. a channel spacing of 50 nm. The device exhibits crosstalks suppressed below 40dB a...

Microstrip antennas are low in profile and light in weight and they are now developed for many applications. The main difficulty of the microstrip antenna is its narrow bandwidth. Several modern applications like satellite communications, remote sensing and multi-function radar systems will find it useful if there is a dual band antenna operating from a single aperture. Some applications requir...

TV combiner is a device which can be used to transmit two or more TV or FM programs with different frequencies and power levels by a single wide band antenna simultaneously. One of the following three methods is usually used for its construction: 1-Star Point Filters, 2-Directional Coupler Filters and 3Phase Line Method. In this paper, using phase line method which is simpler compared to other ...

Ground-based counts and colors of faint galaxies in the U and R bands in one field at high Galactic latitude are presented. Integrated over flux, a total of 1.2 × 10 sources per square degree are found to U = 25.5 mag and 6.3 × 10 sources per square degree to R = 27 mag, with d logN/dm ∼ 0.5 in the U band and d logN/dm ∼ 0.3 in the R band. Consistent with these number-magnitude curves, sources ...

A novel GaAs monolithic membrane-diode (MOMED) structure has been developed and implemented as a 2.5-THz Schottky diode mixer. The mixer blends conventional machined metallic waveguide with micromachined monolithic GaAs circuitry to form, for the first time, a robust, easily fabricated, and assembled room-temperature planar diode receiver at frequencies above 2 THz. Measurements of receiver per...

A phenomenological two molecular orbital (2-MO) model of poly(para-phenylene) (PPP) is introduced. Its parameters are determined by fitting its predictions to exact Pariser-ParrPople model calculations of benzene and biphenyl, and it is solved using the density matrix renormalisation group method. It is shown that there exists a band of B u excitons below the band states. In the long chain limi...

A fourth-degree Substrate Integrated Waveguide (SIW) crossed coupled band pass filter for WLAN band is designed by using a new negative coupling structure. It consists of two U shape microstrip lines on top and bottom planes with via holes at the center of them. This paper investigates the phase characteristics of negative and positive coupling structures and their effects. The design, fabricat...