نتایج جستجو برای: frequency divider
تعداد نتایج: 485316 فیلتر نتایج به سال:
Frequency divider circuit is the basic in digital logic circuit. The function to divide or drop frequency of high signal get lower for a given by division. On Multisim software platform, using different design methods, as foundation middle scale integration chip 74LS161, even divider, odd and (N- 0.5) respectively. Each principle method illustrated simulated. results showed that correct conform...
Injection-locked oscillators (ILO’s) are investigated in a new theoretical approach. A first-order differential equation is derived for the noise dynamics of ILO’s. A single-ended injection-locked frequency divider (SILFD) is designed in a 0.5m CMOS technology operating at 1.8 GHz with more than 190 MHz locking range while consuming 3 mW of power. A differential injection-locked frequency divid...
The multiple-divide technique, using the multi-ratio frequency divider, has a possibility to improve FoM of VCO. This paper proposes a design optimization of LC-VCO using the multiple-divide technique. In the simulated results using 90-nm CMOS model parameters, the optimum frequency range, achieving better than −187.0 dBc/Hz of FoM, can be extended from 6.5–12.5 GHz to 1.5–12.5 GHz. The propose...
A dual-modulus (divide-by-16/17) prescaler has been designed using a 0.35μm CMOS technology. It consists of a divide-by-4/5 synchronous divider and a divideby-4 asynchronous divider, all implemented with MOS current mode logic. The operating frequency range is simulated to be from 0.8 to 3.1 GHz including all parasitics. The prescaler including the output buffers driving external 50Ω load draws...
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 ...
Technology advances have made gigabit signal a viable and attractive. A method to design IEEE 1394 based 1GHz Phase Locked Loop (PLL) system as frequency synthesizer with Low Phase Noise is proposed. A complementary LC oscillator is used to generate the 1GHz oscillation frequency and is divided into lower frequency clock by the feedback frequency divider. The architecture is type II third order...
A prescaler is widely used in frequency synthesizers in order to handle channel selection. The division ratio has to be chosen carefully to achieve the desired frequency. In this paper, we present a 6 modulus prescaler in a 0.18 μm SiGe BiCMOS technology. The prescaler is part of a 60 GHz frequency synthesizer. In addition, we present a frequency planning for the 60 GHz frequency synthesizer. T...
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