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1000 Threads found on edaboard.com: 100 Mhz Amplifier
hiiiiiiiii to all please i need low nois amplifier that cover the range 100 mhz. to amplify the signal that recieve from the antenna in fmcw radar.. thanx
perhaps you can consider splitting the band in two using Avago MGA-30889 and MGA-30789...besides having the target of NF/Gain/IRL/ORL/OIP3/Power budget, for such broad band you ll need to know more a less how flat do you need the response for example on the gain...many MMICs have negative slope on the gain for this band and you may see differences
50 hz - 100 mhz rf pree amp general purpose
Hi .. is there any GUI based linux for a pentium 1 100 mhz comp. I managed to get hold of a cheap cannon laptop with this config .. I m not sure how much ram it has though. Thanks
hi all! my opamp operate with 100 mhz range. Do i need to care about the fliker noise since fliker noise normally less than 1khz?
The question is depends on the application of your opamp. If your input is DC or slow, why you need a 100mhz opamp. You can make a very high open loop gain opamp. I believe it is useful for you.
Has anyone got a practicable and simple design for an oscillator , greater that 100 mhz. please share it. thanks
You could use the DCM or just multiply the clock, and another way to multiply the 50mhz clock to 100mhz is to use "XOR". Of course, DCM's the recommended way.
Looking for a schematic of a discrete circuit to drive the transformer in a 100 mhz Ethernet system. Needs to convert logic signals to the +1, 0, and -1 levels compatible with standard Ethernet. I just need the actual drive portion - not interested in a complete PHY component as processing is handled separately. All the chips I have located have wa
I regularly use 74AHCT series for 3.3 to 5V level conversion, preferably 74AHCT1G125 single gate devices. They are specified with a typical propagation delay of 3.4 ns (with 15 pF load) and good symmetry. To interface a symmetrical clock of 2.7Vpp to 5V CMOS, capacitive level shifting with 2.5V bias would also keep the threshold requirements.
Many people (myself included) use a Colpitts-type resonant circuit with a series LC (resonant slightly below the desired oscillation) in series with the emitter of the oscillator transistor to suppress the B-mode oscillation. The advantage of this and related methods is that it doesn't need to add significant loss. I find this specific arrangemen
hi everybody i have designed a patch antenna in HFSS for 100 mhz i am getting fine RL at 100 mhz but the other antenna parameters gain, directivity etc. are not quite well , i am unable to understand this problem can anyone help me in this regard please, my email id in engineermohsinali@gmail.com, if any expert is interested (...)
Here's a 100 mhz amplifier using SD1127:
I am designing an amplifier at 2.45 GHZ (center frequency) using 0.35 ?m technology, but I have a lack of resources. The amplifier has a span about 100 mhz around the previous center frequency. It should have a gain about 20 dB to drive a 50 Ohm load. Can anyone direct me to the good resources about such topics (...)
It may be impossible to find a commercial quartz oscillator running directly at 200 mhz. But I saw some 100 mhz versions with TTL output. Then use a frequency doubler afterwards. Good frequency doublers are available from Mini-Circuits. You can also use a diode pair doubler and a 200 mhz amplifier to (...)
What does mean 20 mhz? I see text that 20 mhz,50 mhz,100 mhz on oscyloscopes.
Seems that the low freq. end of S21 has about 10dB atten instead of the 17 dB gain. My opinion is, that some (low freq transmission) circuit element (series capacitor, shunt inductor, etc) is the main problem, because at about 100 mhz the circuit should work, except if some above mentioned problem happens. Other possibility (as mentioned above) o
Hi, Can anyone please share a track and hold amplifier circuit design/schematic? I need one with the following specs: 1.8V supply output swing: 1.2V p-p gain: 6 dB approx. 200MS/sec THD > 70 dB @ approx. 100 mhz power as small as possible no restriction on opamp architecture any design, even close to these specs would do. i (...)
A gain of 100dB is 100,000 times the voltage. An FM radio receives 100mhz but it uses an oscilllator and mixer to reduce the signal to the IF frequency of 10.7mhz where an IC amplifies it many times. Since FM radio signals are usually small the RF amplifier uses a small amount of AGC (...)
Hi manju, I have a question regarding the findings of the values of the decoupling capacitors.I have my frequency as 100 mhz.. Should I just take Xc as 50 ohms and calculate..? Should it be of same value at both the input and the output? Thanks in advance Santom Added after 6 min
Hi all, Does anyone have any material for an amplifier design that will work in 300-900 mhz range. Input to the amplifier will be +10dBm and I need minimum 1W of output power. I don't need much performance so a simple circuit would be great. (Noise,distortion is not important). Thank you all. :D
Hi everybody, I'm having a little troubling simulating the harmonic distortion for a MOSFET differential amplifier with ADS. I am trying to calculate HD2, HD3, and the point at which the apparent gain drops by 1dB all for a 50mV signal at 100 mhz. I set up the circuit and added the Harmonic Balance simulation block and set it up everything (...)
First thing is to post the cct , difficult to help when we've got no idea what you have done. ---------- Post added at 13:04 ---------- Previous post was at 11:19 ---------- First off I don't think the GBW of that opamp is up to the job. You won't get a gain of 100 at 20mhz. If the output is always -48mV --
Hello I need to make a transistor amplifier which has a voltage gain of 15 at 100 mhz. I have the BFR520 NPN wide band transistor (fT = 9 GHz). 1. Is it possible to make this amplifier using general calculations (by calculating RB1, RB2, RE, RE for common emitter amplifier) or do I have to go for an (...)
Dear all. Hi. I have a two stage complementary amplifier circuit constructed by CMOS 90nm. Three figures are attached. The first one is the schematic of the amplifier, and the second one is the location of the poles and zeroes of the circuit in an s-plane. Fig. 1: Schematic 86984 Fig. 2: s-plane 86986[/A
For high frequency RF amps (Fc> 100 mhz), the aerial is normally connected by a bit of Coaxial cable that matches the aerials impedance -in the range 50-75 ohms. In this case you still want a voltage amplifier, but if the device is matched to the low impedance, then extra gain or linearity can be got at no no expense, such as using a (...)
The complex modulations used today are looking for higher BWs than 10 mhz (even up to 100 mhz). This would be really a challenge for Envelope Tracking approach, which anyway has its own problems at even lower BW than 10 mhz (like failing TX Output RF Spectrum, and TX Noise Power in RX band).
I am designing 100 mhz scope + 100 mhz logic analyzer on USB bus. In future, I plan use FireWire interface for data exchange between board and PC. I think it is better idea then use slow COM port
Does anybody know details about the availability of 100 MIPs xx51 uControllers ? Don't be confused with a 100mhz xx51 uC.
You may use 1N34 but measuring result will be reduced at higher frequencies above 100mhz up to 1GHz. Diode is point contact diode and was intended for usage at lower frequencies, I think.
I want to make about following parameters amplifier : G 40dB P1dB 44dBm gangs 200-400mhz Class AB I need relating information: - the influence of temperature on parameters the VDMOS, LDMOS. - the selection of transistors (what firm ???) - on what was one should be careful, I found the solution firms polyfet,
Hi, I'd like to build kind of communication system. I've got many things working at 77 GHz for Automative but the problem is IF frequency is up to 100 mhz only. Any source for components at 5.8 GHz like oscillator and modulator ?? Regards
Dear Shaq, The Opamp parameters are decided by: 1. Gain - should be very high. If the gain error is expected to be around 01% or 0.01, then the gain for an N-bit DAC should atleast be 2^N*1/Gain Error. So for a 8 bit DAC, the gain should be about 2^8*100 = 128*100 = 12800 or about 80 dB. High gain would also reflect into lower input referred
What Frequency are you using? What power do you want at 100 meters? What is your DC rails? I would google your requirements.
Hi. I am designing a tuned common emitter RF amplifier at about 100 mhz. How does one match the high collector output impedance to a low load resistance? I did a simulation and the collector impedance is rather large, about 100 kohm. How do you match this to say a 50 ohm load? Is it necessary really to match the (...)
Hi if i'm true - the FM is ~100 mhz and AM is ~1mhz.... 20 cm wire is capacitance ~2pF +~mOhms resistors at 1mhz and ~Ohms resistors at 100mhz Your need high impedance input amplifier to get voltage from such antenna at 1mhz and You can use 50 Ohm input (...)
Hello I have a doubt in the Book "Design of Analog CMOS Integrated Circuits" by Behzad Razavi Chapter 8 Page 253 Figure 8.10 Cascade of two 100 mhz feedback apmlifiers able to provide faster response Ok as shown in the figure 8.10(Left) what will happen if we choose f 3db = 100mhz for 20 mhz (...)
Hi all! I'm just looking for the all-in-one device suitable for every purpose buffer amplifier with high bw (bw >100 mhz) for driving high loads (< 100R) at a voltage of 5Vpp . I already found a nice discussion at diyaudio comparing BUF634, HA5002 and several other devices. That
The linear design with s2p files for Q1/Q2 is using a bias of VCE = 4.78 V, IC = 9.81 mA for Q1 and VCE = 10 V(?), IC = 16.5 mA for Q2. But the bias in the real circuit seems to give approx. VCE = 3.5 V, IC = 11.5 mA for Q1 and VCE = 4.3 V, IC = 21 mA for Q2. This should be easy verified using a voltmeter. Incorrect bias gives different S-paramete
Is this for simulation or synthesis? How much jitter can you tolerate? Which device are you using? Many FPGAs provide DLLs or PLLs that can synthesize various clock frequencies based upon an input clock. For example, with a Xilinx Spartan-3 FPGA you could configure a DCM (digital clock manager) to multiply your 100 mhz clock by the ratio 12/25.
Hi, I need design of some class AB or C power amplifiers (10 Watt) for <100 mhz 1) what companies produce transistors? 2)what practical considration needed? 3) have you any document or picture of power amplifier at this bands? thanks
Hello I am having trouble with this question Design a PMOS load common source amplifier to provide a gain of 40db and unity gain frequency of 100 mhz I have tried a combination of gm/Id and hit and trial and am unable to meet both the constraints.
I would like to ask one question: when i check the stability of CMBF loop. There is peak shows in both loop gain and phase margin plot. I can not know the reason. Could you help me ? As the peaks occur at relatively high frequencies (100 mhz region) it seems to be a result of parasitic capacitive feedbacks. But - is
Hi I am having a 100 mhz Clock, I have to design a Clock of 33.3 mhz With and Without 50% duty cycle.
The load won't have the said impedance over the full 10 to 100 mhz range. (Near to technically impossible). You also didn't tell, if the PA is standard 50 ohm or different. A VWSR instrument is the best method to check the matching condition over the full frequency range.
Is it feasible to achieve 1 mhz cut-off frequency through sallen-key active RC filter on chip? If possible, what should the minimum order of the filter be? Added after 2 hours 36 minutes: One More question regarding SK filter: What kind of stability issues one might encounter while d
100Hz is the unity gain frequency of the open loop gain of the amplifier or it's -3dB frequency?
Reading the said other post, it seems to me, that the present discussion is more or less useless. One more bad cross posting example. I still keep my opinion, that litz wire usage can be meaningful for 10 or 100 mhz range, but most likely not for waveguide transition or transmission line design in generally.
Does anyone have low power 27mhz amplifier (working below 9V Vdd) ( for transmit signal up to 100m). I found MIC919. IS this okie for this application THank for reading
100 mhz signal bandwidth normally implies 50 ohm impedance matching. 12V can mean 12 V into 50 ohm load (12 Vrms, Vp or Vpp ?) or 12 V unloaded output voltage. Depending on the intended generator output waveform, a more detailed amplifier specification should be given. E.g. do you need DC capability?