In Trillion Dollar Economists, Robert Litan wrote (p. 254),

Various economists had ideas for how the commission could best achieve these apparently conflicting objectives, but none were as influential as Paul Milgrom, his colleague Robert Wilson, and longtime senior economic advisor at the FCC Evan Kwerel. . .

The key mechanism these economists designed was the simultaneous auction that required bidders to remain active in every round of bidding in order to be eligible to receive any licenses

Litan’s 2014 book about economists whose work proved valuable in practice is remarkable in that it included several subsequent Nobel laureates: Richard Thaler (2017), William Nordhaus (2018), Banerjee/Duflo/Kremer (2019) and now Milgrom and Wilson.