CPC G01S 7/032 (2013.01) [G01S 13/426 (2013.01); H01Q 1/3233 (2013.01); H01Q 3/34 (2013.01)] | 33 Claims |
1. An antenna subsystem, comprising:
a sparse receive antenna including an array of electronically steerable receive elements each configured to receive a respective signal having a wavelength and each spaced apart from each adjacent one of the receive elements by a respective first distance that is more than one half of the wavelength; and
an electronically steerable transmit antenna including an array of transmit elements each configured to radiate a respective signal having the wavelength and each spaced apart from each adjacent one of the transmit elements by a respective second distance that is less than one half of the wavelength.
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