نتایج جستجو برای: lc vco
تعداد نتایج: 30573 فیلتر نتایج به سال:
رشد سریع و نمایی مخابرات بی سیم ، منجر به احساس نیاز به محصولات بی سیم با هزینه پایین ، توان مصرفی کم و اندازه کوچک شده است. در حال حاضر جهت کلی حرکت به سمت استفاده از تکنولوژی cmos برای ساخت اجزای rf سیستمهای بی سیم مانند تقویت کننده های کم نویز (lna) ، ضرب کننده ها (mixers) و اسیلاتورهای کنترل شونده با ولتاژ (vco) می باشد . مزیت چنین کاری استفاده از ظرفیت های عظیم ساخت تکنولوژی cmos در کنار ف...
—In this paper, design and fabrication of a Ku-band voltage-controlled oscillator (VCO) using commercially available 0.18 μm SiGe BiCMOS technology is presented. To achieve the low phase noise, the VCO employs a gm-boosted configuration which is a combination of cross coupled VCO and balanced Colpitts VCO, and the VCO simultaneously achieves wide tuning range. The tested results show that the ...
Pulmonary tuberculosis is a global problem requiring 6month MDT-DOTS continuous treatment. This time based treatment along with the combination of VCO nutritional supplement and/or Catfish-extracted albumin has shown a significant benefit on improving immune response, accelerating the conversion of BTA sputum, increasing nutritional states and improving chest X-ray imaging in people with active...
[1] Sheng-Lyang Jang, Li-Te Chou and Chia-Wei Chang, ” Colpitts VCO with Gate-Series High-Quality Factor LC Resonator,” in press, Microwave and Optical Technology Lett., Oct. 2010. [2] M. H. Juang, C. W. Chang, D. C. Shye, J. L. Wang, C. C. Hwang, and S. L. Jang, “Study of polycrystalline-Si thin film transistors with different channel layer thickness at low bias voltage”, Microelectronics Engi...
Voltage Controlled Oscillator (VCO) based ADC is unlike other ADCs. Input analog signal is converted into timing information via VCO then quantized in time. This paper demonstrates the multi bit VCO based quantizer using Frequency to Digital converter (FDC). Simulation result achieve in terms of SNR, SNDR and power dissipation. VCO based quantizer design using Cadence Virtuoso in GPDK 90nm tech...
Most PLL research focuses on narrowband systems that support only one communication standard. For a flexible system, it may be desirable to support multiple standards. A single PLL capable of operating over a wide frequency range while meeting all the requirements of the individual standards can save area and design effort, compared with multiple PLLs each supporting only one standard. This the...
This paper discusses the design and implementation of an inductorless differential VCO with a maximum oscillation frequency of 20 GHz, in a 47 GHz SiGe process technology. The VCO is based on a full-wave rectification frequency-doubling technique, applied to a half rate differential single-stage feedback oscillator. It also benefits from a new circuit phenomenon named hereinafter Self Injection...
In this paper, a 24 GHz transformer-coupled VCO is presented for a wide linear tuning range in the 0.13-μm CMOS process. The measured results of the proposed VCO show that the center frequency is 23.5 GHz with 7.4% frequency tuning range. The output frequency curve has wide linear tuning region (5.5%) at the middle of the curve. Also, the VCO exhibits good phase noise of −110.23 dBc/Hz at an of...
Problem statement: In this study and in consequence of the restricted performance of the multi standard wireless receiver utilizing the classical architectures, we proposed and presented a new architecture of multi band wireless receiver based on an Inverse Sine Phase Detector Phase Locked Loop (ISPDPLL) associated with modified multi band LC quadrature Voltage Controlled Oscillator (VCO), supp...
This paper presents the integration of an inductor by complementary metaloxide-semiconductor (CMOS) compatible processes for integrated smart microsensor systems that have been developed to monitor the motion and vital signs of humans in various environments. Integration of radio frequency transmitter (RF) technology with complementary metal-oxide-semiconductor/micro electro mechanical systems ...
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