Design of a microwave down-converter module Online publication date: Wed, 01-Apr-2015
by Xueyu Huang; Yongbo Xiang; Chuangming Tong; Na Wei
International Journal of Information and Communication Technology (IJICT), Vol. 7, No. 2/3, 2015
Abstract: Microwave down-converter modules are the key components in communications, radar and electronic warfare systems. The paper presents the design method of a low noise microwave down-converter module. The parameter of each component could be determined by the related parameter curves of the low noise amplifier, the mixer and the noise figure of the system. So, a list of parts which satisfied the needs could be selected out to complete the design. By using two cascaded low noise amplifies in the front end of the circuit, the low noise performance is fulfilled. A mirror suppression balanced mixer is followed to complete the frequency change, which can reduce the mixer noise effectively. Last, two cascaded intermediate frequency amplifies are putted to match the need of the total power gain. A down-converter for up-l ink wideband code division multiple access (WCDMA) repeater is designed according to the analysed result, the overall noise figure is less than 0.8 dB, and the total gain is around 66 dB with 0.8 dB ripple under 60 MHz bandwidth.
Existing subscribers:
Go to Inderscience Online Journals to access the Full Text of this article.
If you are not a subscriber and you just want to read the full contents of this article, buy online access here.Complimentary Subscribers, Editors or Members of the Editorial Board of the International Journal of Information and Communication Technology (IJICT):
Login with your Inderscience username and password:
Want to subscribe?
A subscription gives you complete access to all articles in the current issue, as well as to all articles in the previous three years (where applicable). See our Orders page to subscribe.
If you still need assistance, please email subs@inderscience.com
Our Blog 
Follow us on Twitter 
Visit us on Facebook