Abstract A high image rejection 38 GHz demodulator in TSMC 65-nm CMOS process is presented. To achieve better than −40 dBc ratio (IRR), a low I/Q mismatch 45° LO power splitter of sub-harmonic mixer proposed. In this design, the composed Wilkinson divider, series delay line with electrical length on one side and shunt 90° transmission other side. This configuration attractive because its design...

In this paper, an isolation enhanced multiway power divider for wideband beamforming array is proposed. This method is based on the concept which converts the divider into multi-section stepped impedance transformer. In addition to this scheme, lumped inductors and capacitors are incorporated in isolation networks to enhance the isolation bandwidth of the divider. In/Output reflection and isola...

This study aims to analyze antennas' characteristics at a frequency of 2.2 GHz, including the value return loss, VSWR, gain, bandwidth, surface current, and radiation pattern. The antenna have been designed using simulations made with FR-4 substrates dielectric constant ε_r= 4.3 substrate thickness (h) = 1.6 mm copper patches patch 0.035 mm. Single antennas are first get desired parameters, the...

A novel Gysel power divider based on patch type structure is presented in this paper. The proposed power divider possesses broad bandwidth, small physical occupation and arbitrary power division. More than 30% bandwidth enhancement is achieved based on the −15 dB input return loss criteria, while 55% size reduction is realized compared with conventional Gysel power divider. What’s more, flat di...

This letter presents miniaturized Gysel power dividers using lumped-element components. The characteristic impedances of all the equivalent transmission lines in these dividers are fixed to the same values based on even and odd mode analysis, thus simplifying the design procedure and miniaturizing the Gysel power dividers. The ideal divider designed at a frequency of 590MHz exhibits power split...

In this paper, a planar three-way power divider with compact size is presented using quarter-wave long five-conductor couple line. It is analytically proved that the proposed structure allows the performance of three-way power dividers. Based on the derived equations and simulation, the three-way power divider is designed and measured at 2.0GHz. The measurement shows excellent performance with ...

This paper presents implementation of a high speed, low noise and low power frequency divider based on current mode logic and cascade connection of divide-by-2/3 cells for high division range. The proposed divider is optimized for high frequency and low power operation. Integration of the proposed divider in a frequency synthesizer is an attractive option for the ultra-low power carrier signal ...

A seven ports network is proposed to act as a six-way power divider/combiner. The proposed network structure consists of a set of λ/4 planar transmission lines at the design frequency and does not require any isolating resistor. The power divider is capable of providing various power ratios by judicious choice of the transmission lines characteristic impedances. Design equations are derived for...

In this paper, we present a broadband out-of-phase power divider with high power-handling capability. The proposed device consists of several sections of double-sided parallel-strip lines (DSPSLs), a mid-inserted conductor plane, and two external isolation resistors, which are directly grounded for heat sinking. A through ground via (TGV), connecting the top and bottom sides of DSPSLs, is emplo...

The demand for lower cost, lower power, and multiband RF circuits increased in conjunction with need of higher level of integration. In this project a low-power singlephase clock multiband flexible divider for Bluetooth, Zigbee, and Network standard’s 802.15.4 and 802.11 a/b/g Wireless LAN frequency synthesizers is proposed based on pulse-swallow topology and is implemented. The frequency synth...