网络电视业务实现方案研究
... (B) Poles and zeros can not be easily determined Low-frequency s nL d1s nL1 d 2 s 2 ... FL ( s) nL s e1s nL1 e2 s 2 ... ...
... (B) Poles and zeros can not be easily determined Low-frequency s nL d1s nL1 d 2 s 2 ... FL ( s) nL s e1s nL1 e2 s 2 ... ...
MAX2411A Low-Cost RF Up/Downconverter with LNA and PA Driver ________________General Description
... IP3. Image and local-oscillator filtering are implemented off-chip for maximum flexibility. The PA driver amplifier has 15dB of gain, which can be reduced over a 35dB range. Power consumption is only 60mW in receive mode and 90mW in transmit mode and drops to less than 3µW in shutdown mode. For appl ...
... IP3. Image and local-oscillator filtering are implemented off-chip for maximum flexibility. The PA driver amplifier has 15dB of gain, which can be reduced over a 35dB range. Power consumption is only 60mW in receive mode and 90mW in transmit mode and drops to less than 3µW in shutdown mode. For appl ...
A MEMS-Based, High-Resolution Electric-Field Meter
... A third conductor, the shutter, is held at the same potential as the sense plate and is swept laterally across the sense plate. The motion of the shutter serves to modulate the effective area of the sense capacitance relative to the target surface. Since Csense is proportional to the effective area, ...
... A third conductor, the shutter, is held at the same potential as the sense plate and is swept laterally across the sense plate. The motion of the shutter serves to modulate the effective area of the sense capacitance relative to the target surface. Since Csense is proportional to the effective area, ...
C_201509_Qiteng_Hong_APAP_LoadShedding_Final
... seamlessly as the local load and generation is matched as close as possible before the islanding action is undertaken. The supply to the most critical loads (load 0-4) within the microgrid has been maintained. It is important to note that, in this case, the synchronous generator emulating the main g ...
... seamlessly as the local load and generation is matched as close as possible before the islanding action is undertaken. The supply to the most critical loads (load 0-4) within the microgrid has been maintained. It is important to note that, in this case, the synchronous generator emulating the main g ...
Microwave Engineering - Universiti Sains Malaysia
... •Using two single pole and double throw switches to route the signal between one of two transmission lines of difference length. •The phase difference is 1 2 . This circuit is a broadband & reciprocal phase shifter so that it can be used as receiver as well as transmitter. •Disadvanta ...
... •Using two single pole and double throw switches to route the signal between one of two transmission lines of difference length. •The phase difference is 1 2 . This circuit is a broadband & reciprocal phase shifter so that it can be used as receiver as well as transmitter. •Disadvanta ...
50 MHz to 2200 MHz Quadrature Modulator ADL5385
... drive from a complex IF. Typical applications are in radio-link transmitters, cable modem termination systems, and broadband wireless access systems. The ADL5385 is fabricated using the Analog Devices, Inc., advanced silicon germanium bipolar process and is packaged in a 24-lead, Pb-free LFCSP_VQ wi ...
... drive from a complex IF. Typical applications are in radio-link transmitters, cable modem termination systems, and broadband wireless access systems. The ADL5385 is fabricated using the Analog Devices, Inc., advanced silicon germanium bipolar process and is packaged in a 24-lead, Pb-free LFCSP_VQ wi ...
Mod 4 – Cable Testing - Chabot College
... electrical signals such as voltage waves and pulses. The x-axis on the display represents time, and the y-axis represents voltage or current. There are usually two y-axis inputs, so two waves can be observed and measured at the same time. Analyzing signals using an oscilloscope is called time-domain ...
... electrical signals such as voltage waves and pulses. The x-axis on the display represents time, and the y-axis represents voltage or current. There are usually two y-axis inputs, so two waves can be observed and measured at the same time. Analyzing signals using an oscilloscope is called time-domain ...
Supply Noise Effect on Oscillator Phase Noise
... Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice. Customers should obtain the latest relevant ...
... Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice. Customers should obtain the latest relevant ...
DS3994 4-Channel Cold-Cathode Fluorescent Lamp Controller General Description
... lamp frequency (20kHz to 80kHz) as shown in Figure 7. This part of the cycle is called the “burst” period because of the lamp frequency burst that occurs during this time. During the low period of the DPWM cycle, the controller disables the MOSFET gate drivers so the lamps are not driven. This cause ...
... lamp frequency (20kHz to 80kHz) as shown in Figure 7. This part of the cycle is called the “burst” period because of the lamp frequency burst that occurs during this time. During the low period of the DPWM cycle, the controller disables the MOSFET gate drivers so the lamps are not driven. This cause ...
Chirp spectrum
The spectrum of a chirp pulse describes its characteristics in terms of its frequency components. This frequency-domain representation is an alternative to the more familiar time-domain waveform, and the two versions are mathematically related by the Fourier transform. The spectrum is of particular interest when pulses are subject to signal processing. For example, when a chirp pulse is compressed by its matched filter, the resulting waveform contains not only a main narrow pulse but, also, a variety of unwanted artifacts many of which are directly attributable to features in the chirp's spectral characteristics. The simplest way to derive the spectrum of a chirp, now computers are widely available, is to sample the time-domain waveform at a frequency well above the Nyquist limit and call up an FFT algorithm to obtain the desired result. As this approach was not an option for the early designers, they resorted to analytic analysis, where possible, or to graphical or approximation methods, otherwise. These early methods still remain helpful, however, as they give additional insight into the behavior and properties of chirps.