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30 Threads found on edaboard.com: Pin Diode Limiter
Hi all, in radars after the TR-cell there is usally a pin-diode limiter. Before the incoming wave meets the pin-diode, some of its power is coupled into a schottky diode for making a DC-voltage. This DC-voltage is applied to the pin-diode and will bias it (...)
Hi I have a big problem. I must simulate a pin diode limiter with some of the common micorwave circuital simulation, for example Ansoft Designer. In particular i must simulate the recovery time, and so I must insert in the simulator a suqare pulse that envelopes a sinusoidal wave. Can anyone help me? Thanks in advance
Hello! I´d like to design a limiter with pin diodes. When I use two pin diodes (without active biasing) the point at which limitation starts is to low. The limitation begins at 5dbm - I need it at 30 dbm. How can I solve the problem? Any usefully documents? nice greeting :)
Dear, Try using pin-diode (or Schottcky diode) Limmiters.Packaged & Drop-in versions are available. check this link for example: Good Luck.
Can somebody tell me if i want to simulate a waveguide limiter using pin diodes what software i should use. i have HFSS in mind, and the electronic circuitry can be modeled in Ansoft designer. how can i simulate a pin diode with incoming EM waves in a waveguide looking for your kind suggstions
Hi - this is my first question posted on this forum - and I have more to go later ;) I saw some docs and pages on the web about using cheap pin diodes instead hard to get and expensive SRDs but they were quite general. You may already guessed it is to be used as pulse generator with very short rise / fall times. I don't know how fast (...)
i guess you can refer to below literature, Avago AN1049 indicates IM3 (linearity) relation with carrier lifetime and diode resistance. Avago AN1050 also covers many different other aspects related to pin diode limiter. br
Hello could somebody help me to design a limiter using pin diode to get flat leakage of 0dbm? Shall i go for multistage pin diode or 1 pin and 1 schottky diode?how does limiter output depends on frequency? and how can i simulate it in ADS? I didnt find a (...)
Hi Guys, Wanted some advice on HSMP389C pin diode which i saw in receive design. Its was used as limiter, placed at the input of LNA. How can i calculate the maximum power handling of the limiter in that circuit before its damage due to high power transmited to receive path. I read thru the data sheet and no information was (...)
i wish to know if there is a nonlinear model of pin diode for ADS software ( advanced design system of agilent), that i can use as limiter ? tx
limiter design CW>5W, use pin diode usually, I want to know that it can be done with active device in IC design ? Can give some reference ?? 3X
I need details of RF limiter using pin diode and Schottky diode. examples RF limiter simulation using MWO or ADS(4.2 to 4.4 GHz).
how can we use a simple diode instead of pin or schottkey diode?would you please tell me more about your opinion? young.microwave.eng :You can do it by connecting the two diodes back to back and in shunt with transmission line. Pass an AC signal of 5V 50 Hz, then you will get the limited signal, let say (...)
Hi everybody, Is it possible to design a power limiter ( with pin diode or schottky diode) with a threshold at 0dBm (possibly even at -10dBm). If that is the case, how ?:?: Thank you in advance :wink:
Quote from the net: “Increasing the dimensions of the intrinsic region (and its stored charge) allows the diode to look like a resistor at lower frequencies. It adversely affects the time needed to turn off the diode and its shunt capacitance. pin diodes will be tailored for a particular use.”
There are two reasons a schottky diode will fail: 1) static damage 2) high microwave power For static damage, a small value series cap that only passes microwaves, and a shunt inductance to ground (or if narrowband, a quarterwave stub to ground) will probably fix it. If it is high microwave power, you have to differentiate from situations w
Hi everybody... Can anybody send spice- model for pin diodes --> MA4P505-131,MA4604-134 and MA4L031-131 .. Thanks in advance.
Hi everyone I didn‘t found a propriete a diode for limiter。can anyone recommend one 。The up frequency is 40GHz。 what about the Micrometrics’s MLP7100(
Hey All I need a very wideband limiter 80-4500MHz. does anyone have an idea of a commercial limiter I can use? (not connectorized) on the other hand, can anyone refer me to a good design note? the simple design I know is of a shunt pin diode and a shunt inductor as an RF choke but how can I use a inductor if I have (...)
i'll look into the radar handbook. the design from Eyal seems to use pin diode for the limiter design. is there other means to implement it for board level?
If they are the same frequency, you need to use a ferrite device called a circulator. You also might need some sort of pin diode switch or limiter in front of the receiver to keep it from blowing up if the antenna is ever removed or short circuited. If they are different frequencies, you use two bandpass filters arranged in a diplexer (...)
A "duplexer" is a high powered limiter, often pin diode or gas discharge tube based. A "diplexer" is a filter system with a common port and two different-frequency ports. You must research what a "singly terminated filter" means in order to properly design a diplexer filter.
My LNA (2.4GHz) has just 5mA Ic current, but the jungle of ISM band can hurt it a lot. How can I protect it? I assume a pin diode in front of the LNA will do the job, but how to implement it? Can I find somewhere an application note regarding how to protect the LNA? Thank you in advance to all people. HS
You will need a shottky diode to detect the envelope, and drive that current into a pin attenuator.
Any form of limiting will strip off the AM. At lower frequencies, a comparator will work well and cheaper than a pin diode and associated circuitry.
hello all i am designing a T/R module in X band for a radar......for this i need a limiter circuit using MA4L011134 pin diode.......i want to know where can i find .s1p file for this be used in ADS Also LNA design using MGF4941AL....... Also i am designing a 10W Class AB Solid state power amplifier using a discrete transistor who
can someone tell me how to measure an optocoupler with my DMM to see if its good or bad. i have an optocoupler with 4 pins # l0514the nomber below 817b. thanks for assistance Ras
My input:-70~10dbm 150MHz I want output<-10dBm insertion Loss<3dBm I use two pin diobes parallel connect to earth,but it don't work well,output<10dBm. who can help me,thank use active bais
HSMP3813 is basically pin diode this means that it needs detector to power it. So the limiting power is depend on the detector circuit than this device. Share your schematic to advice you better.
LM317 specification is that the output is 1.2v higher that the ADJ pin so the minimum voltage in the output is 1.2v. The circuit that you describe uses a -1.2v fed into the ADJ pin so that the LM317 can have an output down to 0v. The negative voltage uses a diode and capacitor to rectify the negative voltage and regulates the -1.2v using (...)