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内容:908V的
射频
连接器好像不是视频里那种薄扳手安装的,应该用哪种拆呢
【KS-5C】第一部分 扫频信号源 介绍以及实现
GiroPetrenko
4年6个月前
回复于
极客DIY
电子技术
内容:(现在就是把默认输出频率除以8)这张板子的焊盘出了一点小问题,幸好不是在
射频
路上。
使用ADI的RF DAC制作高端无线军用干扰机
1176764177
3年10个月前
回复于
无线电
内容:NI有IQ 1G的
射频
收发信机板卡,公费买的话还是蛮好用的。
回 19楼(adeng2002) 的帖子
古人
12年8个月前
回复于
无线电
内容:HAM倒V天线,图中白色的是巴伦,还有
射频
连接器和转换头,我自己改装的。
[重来] 5.8GHz 测距雷达
GiroPetrenko
4年9个月前
回复于
无线电
内容:决定了
射频
前端,振荡器,中频处理部分待定。
msi sdr
weiyu
4年9个月前
回复于
无线电
内容:
射频
的阻抗匹配实在是弄不明白。
【4】我们正在努力的开发KCDEMO
虎哥
11年0个月前
回复于
无线电
内容:bg2bhc 发表于 2014-1-4 10:26用stm32内置adc采的
射频
?
把之前的声卡SDR完善了一下,可以使用SDR#等软件控制
虎哥
4年1个月前
回复于
无线电
内容:其实我一直没看明白用的什么方法处理
射频
,难道是MSI001…楼主说的前序文章是这篇 XXXXXXXXXXXXXXXXXXXXXXXX/t/85219
出几片有线电视放大器模块
jrcsh
14年11个月前
回复于
跳蚤市场
内容:我作的这有线
射频
广播工程 主有2种 一种就是 放大和在线路点中平衡 有线视电视(数字和模拟)的信号值 另一程就是 使用自己的信号源 加入到
射频
广播线线路中去是不是就 接入 线路就行了 对接地要求高不
[jxs出品~~]RDA5820 FM收发一体机
打字慢
10年3个月前
回复于
电子技术
内容:引用 jxs:PS:求一个FM
射频
功放电路,用9018的那种,功率不用太大,让这个芯片输出放大一下距离覆盖达到300米就行了 你可以用upc1651 专业的
射频
功放集成块(这个噪音很大),或者用msa0886
KC908频谱仪内测样机生产进度情况通报
erdao
4年8个月前
回复于
无线电
内容:虎哥,您的
射频
板一般是在哪打样的呢?
进口HP惠普LCR测试仪频率10MHZ
改装pcp
4年2个月前
发表于
跳蚤市场
内容:原来自用测试
射频
器件的,现在洋垃圾基本很难进口了。
问个阻抗问题
nthalex
7年9个月前
回复于
无线电
内容:引用 张静茹:还有一点我觉得挺奇怪的,
射频
线的阻抗为什么跟长度好像没关系?,引用 张静茹:还有一点我觉得挺奇怪的,
射频
线的阻抗为什么跟长度好像没关系?
最复杂的模拟电路是什么电路?
justinpiggy
10年0个月前
回复于
电子技术
内容:图像处理电路不算复杂,现在的图像处理大部分都数字化了,普通雷达电路不能叫做复杂,但是各种技术要求很高,各种
射频
方面的要求,而且还牵涉到非常大功率的
射频
发射。
150兆射频功放发射板(镀金三菱2SC1022发射管4个)
古人
12年11个月前
回复于
跳蚤市场
内容:我玩高能
射频
我也来仿制SDRPLAY【持续更新中】
weiyu
4年9个月前
回复于
无线电
内容:那c19那不就有角了么,改成弧形走线,我打算所有
射频
都换成0.3mm走线了,改线太费事了。
大家看看这个电子管是什么型号的!从网上怎么找不到呢?
逆流的思念
12年4个月前
回复于
电子技术
内容:
射频
管[s:271]
为什么测试这种PCB天线测得的驻波和阻抗显示和50欧差这么多
mcusun2000
8年8个月前
回复于
仪器仪表
内容:我是刚搞
射频
这一块,要先确认一下,是不是我测量手法有问题先。
拆了个5kw的开关电源 有铜排磁芯 便宜处理给坛友
改装pcp
9年4个月前
回复于
跳蚤市场
内容:
射频
功放买多少钱?
出新锐10w二氧化碳射频激光
张静茹
8年2个月前
回复于
跳蚤市场
内容:
射频
调制的激光吗?
[jxs出品~~]RDA5820 FM收发一体机
※♂土豆♀※
10年3个月前
回复于
电子技术
内容:引用 张静茹:对咩,你这个好像没有放大作用 你怎么就没好好看下楼主的话呢,我这是9018的
射频
电路,仔细看下楼主的话: (求一个FM
射频
功放电路,用9018的那种,功率不用太大,) 让这个芯片输出放大一下距离覆盖达到
古人科技又出新品 · 4.9GHz数字频率计套件
虎哥
12年6个月前
回复于
会员海报
内容:从SMA接头到R470之间那根长线(暂称
射频
输入线)宽度目测不超过1.5mm,板厚1.6mm,介电常数4.6(FR4材料),阻抗约90欧姆,ERA2-SM输入阻抗50欧姆,又怎会只差一二十欧?,另外,这条
射频
输入线下面竟然有从PWR插座引出的到保险管的一根电源线,活生生把
射频
输入线下方的地平面割裂,悲催。
E类(class E)功放的原理及设计
ne555
9年0个月前
发表于
电子技术
内容:E类功放的原理下图为E类功放的电路图 与电源相连的的电感为
射频
扼流圈,允许直流通过为电路提供能量,阻止
射频
电流从此传出,理想状态下感抗无穷大。,,
射频
电流峰值即为系数Irf。,由上图可以看出,i(θ)是输入电流和
射频
电流之和。,输入功率为因为电路的效率为100%,所以
射频
功率等于输入功率。,通过比较式⑥和⑦,以及
射频
电流的峰值电流和有效电流的关系,可以得到
射频
功率只由负载电阻消耗,因此最右边可以看为负载电阻两端有效电压与有效电流的乘积,进而可以求出负载电阻根据之前的分析,负载电阻还可以用另一种更为简单的方式求得通过前面对
射频
串联回路的分析
KC901J/K/R软件缺陷报告跟踪帖
FU106Z
1年0个月前
回复于
仪器仪表
内容:版本:V0.0.13现象:
射频
信号源功能输出功率-10dBm时频率低于60MHz无信号输出,并且输出功率实际貌似只有0dBm和-10dBm两档。
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