![Amazon.com: HQRP F-Type Balun Transformer for Converting 75 ohm Cable Compatible with The Loop Antenna to a 300 ohm Flat Antenna + HQRP Coaster : Electronics Amazon.com: HQRP F-Type Balun Transformer for Converting 75 ohm Cable Compatible with The Loop Antenna to a 300 ohm Flat Antenna + HQRP Coaster : Electronics](https://m.media-amazon.com/images/I/61U8lhm9gxL._AC_SL1172_.jpg)
Amazon.com: HQRP F-Type Balun Transformer for Converting 75 ohm Cable Compatible with The Loop Antenna to a 300 ohm Flat Antenna + HQRP Coaster : Electronics
![Figure 1 from Design of millimeter-wave transformer balun with isolation circuit in silicon based technology | Semantic Scholar Figure 1 from Design of millimeter-wave transformer balun with isolation circuit in silicon based technology | Semantic Scholar](https://d3i71xaburhd42.cloudfront.net/9cb67d9bbd9bc1a6f2ac3c06ede242dcae251247/1-Figure1-1.png)
Figure 1 from Design of millimeter-wave transformer balun with isolation circuit in silicon based technology | Semantic Scholar
![A compact D‐band I/Q mixer with improved transformer balun - Hou - 2017 - Microwave and Optical Technology Letters - Wiley Online Library A compact D‐band I/Q mixer with improved transformer balun - Hou - 2017 - Microwave and Optical Technology Letters - Wiley Online Library](https://onlinelibrary.wiley.com/cms/asset/edd0f482-129a-4c65-b2ca-79a2736bea93/mop30840-fig-0001-m.jpg)