Patent ID: 7557673
Filing Date: 2009-07-07
Classification: H01P,H03H

Abstract:
1. A wide bandwidth microwave balun, comprising: a high frequency balun operating in a high frequency band; a low frequency balun operating in a low frequency band, said high frequency balun and said low frequency baluns including balanced inputs; a circuit for dividing an input signal into a high frequency component and a low frequency component coupled to said high and low frequency baluns, said circuit for dividing an input signal into a high frequency component and a low frequency component including a low pass filter and a high pass filter having respective outputs containing said high frequency and low frequency components coupled to balanced inputs of respective high frequency and low frequency baluns; and, a combiner coupled to said high frequency balun and said low frequency balun for providing a full bandwidth output to offer wide bandwidth impedance matching and second-harmonic rejection.